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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


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SCHEDULE 14A INFORMATION
PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE
SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO.  )
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Filed by the Registrant
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Filed by a Party other than the Registrant
Filed by the Registrantx
Filed by a Party other than the Registranto

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Check the appropriate box:

oPreliminary Proxy Statement
oConfidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
xDefinitive Proxy Statement
oDefinitive Additional Materials
oSoliciting Material Pursuant to §240.14a-12

☐
Preliminary Proxy Statement
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☐
Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
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☒
Definitive Proxy Statement
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☐
Definitive Additional Materials
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☐
Soliciting Material Pursuant to §240.14a-12
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FORTINET, INC.

(Name of Registrant as Specified in Its Charter)

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(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

xNo fee required.
oFee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.
(1)Title of each class of securities to which transaction applies:

(2)Aggregate number of securities to which transaction applies:

(3)Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

(4)Proposed maximum aggregate value of transaction:

(5)Total fee paid:

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oCheck box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.
(1)Amount Previously Paid:

(2)Form, Schedule or Registration Statement No.:

(3)Filing Party:

(4)Date Filed:

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No fee required.

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Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.
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(1)
Title of each class of securities to which transaction applies:
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(2)
Aggregate number of securities to which transaction applies:
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(3)
Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):
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Fee paid previously with preliminary materials.
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Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.
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[MISSING IMAGE: logo_fortinet.jpg]
NOTICE OF 20162018 ANNUAL MEETING OF STOCKHOLDERS

Dear Fortinet Stockholder:

Notice is hereby given that the 20162018 Annual Meeting of Stockholders (the “2016“2018 Annual Meeting”) of Fortinet, Inc., a Delaware corporation, will be held on Friday, June 17, 2016,22, 2018, at 10:00 a.m., Pacific time, at Fortinet’s principal executive offices located at 899 Kifer Road, Sunnyvale, CA 94086, for the following purposes:

1.To elect the two Class I directors listed in the accompanying proxy statement to serve for a term of three years or until their respective successors have been duly elected and qualified.
2.To ratify the appointment of Deloitte & Touche LLP as Fortinet’s independent registered public accounting firm for the fiscal year ending December 31, 2016.
3.An advisory vote to approve named executive officer compensation.
4.To transact such other business as may properly come before the meeting or any adjournment or postponement thereof.

1.
To adopt an amended and restated certificate of incorporation for Fortinet (the “Restated Certificate”) in order to declassify Fortinet’s Board of Directors (the “Board of Directors”) and make other related changes.
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2.
To elect the three director nominees listed in the accompanying proxy statement to the Board of Directors.
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3.
To ratify the appointment of Deloitte & Touche LLP as Fortinet’s independent registered public accounting firm for the fiscal year ending December 31, 2018.
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4.
An advisory vote to approve named executive officer compensation.
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5.
To transact such other business as may properly come before the meeting or any adjournment or postponement thereof.
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The preceding items of business are more fully described in the proxy statement accompanying this notice. Any action on the items of business described above may be considered at the 20162018 Annual Meeting at the time and on the date specified above or at any time and date to which the 20162018 Annual Meeting may be properly adjourned or postponed. Only stockholders of record at the close of business on April 20, 201625, 2018 are entitled to notice of, and to vote at, the 20162018 Annual Meeting.

We have elected to provide access to our proxy materials over the Internet.internet. Accordingly, stockholders of record at the close of business on April 20, 201625, 2018 will receive a Notice of Internet Availability of Proxy Materials and may vote at the 20162018 Annual Meeting and any meetings pursuant to postponements or adjournments of the 20162018 Annual Meeting. We expect to mail the Notice of Internet Availability of Proxy Materials on or about April 29, 2016.

May 11, 2018.

Your vote is very important. Whether or not you plan to attend the 20162018 Annual Meeting, we encourage you to read the proxy statement and vote as instructed in the Notice of Internet Availability of Proxy Materials or vote on the Internetinternet or by telephone as soon as possible. Alternatively, you may follow the procedures outlined in the Notice of Internet Availability of Proxy Materials to request a paper copy of the proxy materials, which include a proxy card to submit your vote by mail. For specific instructions on how to vote your shares, please refer to the section entitled “Questions and Answers About the 20162018 Annual Meeting and Procedural Matters” and the instructions on the Notice of Internet Availability of Proxy Materials.

Thank you for your ongoing support of Fortinet.

By Order of the Board of Directors,

[GRAPHIC MISSING]
[MISSING IMAGE: sig_kenxie.jpg]
Ken Xie
Chief Executive Officer and Chairman of the Board
of Directors
 
Sunnyvale, California
April 29, 2016

May 11, 2018

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PROXY STATEMENT
FOR 20162018 ANNUAL MEETING OF STOCKHOLDERS
 
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QUESTIONS AND ANSWERS ABOUT THE 20162018 ANNUAL MEETING AND PROCEDURAL MATTERS
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Why am I receiving these materials?
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Why did I receive a one-page notice in the mail regarding the Internetinternet availability of proxy materials instead of a full set of proxy materials?
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How can I get electronic access to the proxy materials?
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Can I attend the 20162018 Annual Meeting?
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Who is entitled to vote at the 20162018 Annual Meeting?
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What is the difference between holding shares as a stockholder of record or as a beneficial owner?
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How can I vote my shares in person at the 20162018 Annual Meeting?
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How can I vote my shares without attending the 20162018 Annual Meeting?
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How many shares must be present or represented to conduct business at the 20162018 Annual Meeting?
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What proposals will be voted on at the 20162018 Annual Meeting?
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What is the voting requirement to approve each of the proposals?
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How are votes counted?
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How does the Board of Directors recommend that I vote?
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What happens if additional matters are presented at the 20162018 Annual Meeting?
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Can I change my vote?
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What happens if I decide to attend the 20162018 Annual Meeting, but I have already voted or submitted a proxy card covering my shares?
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What should I do if I receive more than one set of voting materials?
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Is my vote confidential?
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Who will serve as inspector of election?
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Where can I find the voting results of the 20162018 Annual Meeting?
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Who will bear the cost of soliciting votes for the 20162018 Annual Meeting?
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What is the deadline to propose actions for consideration at next year’s annual meeting of stockholders or to nominate individuals to serve as directors?
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How may I obtain a separate set of proxy materials or the 20152017 Annual Report?
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PROPOSAL ONE — ADOPTION OF AN AMENDED AND RESTATED CERTIFICATE OF INCORPORATION IN ORDER TO DECLASSIFY THE BOARD OF DIRECTORS AND MAKE OTHER RELATED CHANGES
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PROPOSAL TWO — ELECTION OF DIRECTORS
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General
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Nominees
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Information Regarding the Board of Directors and Director Nominees
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PROPOSAL TWOTHREE — RATIFICATION OF APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
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General
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Principal Accounting Fees and Services
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Approval of Audit and Non-Audit Services
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PROPOSAL THREEFOUR — ADVISORY VOTE TO APPROVE NAMED EXECUTIVE OFFICER
COMPENSATION
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CORPORATE GOVERNANCE
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Code of Business Conduct and Ethics
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Corporate Governance Guidelines
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Majority Voting Standard for Director Elections and Director Resignation Policy
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Director Independence
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Board Meetings and Committees
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CompensationHuman Resources Committee Interlocks and Insider Participation
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Board Leadership Structure
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Board’s Role in Risk Oversight
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Process for Recommending Candidates for Election to the Board of Directors
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Attendance at Annual Meetings of Stockholders by the Board of Directors
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Contacting the Board of Directors
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EXECUTIVE OFFICERS
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EXECUTIVE COMPENSATION
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Compensation Discussion and Analysis
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Elements of Our Compensation Program
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Determining the Amount of Elements of Executives’ Compensation in 20152017
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Compensation Committee Report​27​​
2015Human Resources Committee Report
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2017 Summary Compensation Table
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Grants of Plan-Based Awards in 20152017 Table
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Outstanding Equity Awards at 20152017 Fiscal Year-End Table
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20152017 Option Exercises and Stock Vested Table
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Potential Payments Upon Termination or Change of Control
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CEO Pay Ratio Disclosure
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Compensation of Directors
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Equity Compensation Plan Information
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CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
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Related-Person Transactions
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Review of Related-Person Transactions
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SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE
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OWNERSHIP OF SECURITIES
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AUDIT COMMITTEE REPORT
​​​​4148​​
OTHER MATTERS
​​​​4249​​
APPENDIX A — PROPOSED RESTATED CERTIFICATE
​​​​A-1​​

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FORTINET, INC.
899 Kifer Road
Sunnyvale, CA 94086


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PROXY STATEMENT
FOR 20162018 ANNUAL MEETING OF STOCKHOLDERS

QUESTIONS AND ANSWERS ABOUT THE 20162018 ANNUAL MEETING AND
PROCEDURAL MATTERS
Q:Why am I receiving these materials?
A:The Board of Directors of Fortinet, Inc. is providing these proxy materials to you in connection with the solicitation of proxies for use at Fortinet’s 2016 Annual Meeting of Stockholders (the “2016 Annual Meeting”) to be held on Friday, June 17, 2016 at 10:00 a.m., Pacific time, and at any adjournment or postponement thereof, for the purpose of considering and acting upon the matters set forth in this proxy statement.

Q:
Why am I receiving these materials?
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A:
The Board is providing these proxy materials to you in connection with the solicitation of proxies for use at Fortinet’s 2018 Annual Meeting of Stockholders, to be held on Friday, June 22, 2018 at 10:00 a.m. Pacific time, and at any adjournment or postponement thereof, for the purpose of considering and acting upon the matters set forth in this proxy statement.
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We expect to mail the Notice of Internet Availability of Proxy Materials (the “Notice”) on or about April 29, 2016.May 11, 2018. Copies of our proxy materials and 20152017 Annual Report are available atwww.envisionreports.com/www.edocumentview.com/FTNT.

The 20162018 Annual Meeting will be held at Fortinet’s principal executive offices, located at 899 Kifer Road, Sunnyvale, CA 94086. The telephone number at that location is (408) 235-7700. As a stockholder, you are invited to attend the 20162018 Annual Meeting and are requested to vote on the proposals described in this proxy statement.

Q:Why did I receive a one-page notice in the mail regarding the Internet availability of proxy materials instead of a full set of proxy materials?
A:Pursuant to rules adopted by the Securities and Exchange Commission (the “SEC”), we have elected to provide access to our proxy materials over the Internet. Accordingly, we are sending the Notice to our stockholders of record and beneficial owners. All stockholders will have the ability to access the proxy materials on the website referred to in the Notice or request a printed set of the proxy materials. Instructions on how to access the proxy materials over the Internet or to request a printed copy may be found in the Notice. In addition, stockholders may request to receive proxy materials in printed form by mail or electronically by email on an ongoing basis.
Q:How can I get electronic access to the proxy materials?
A:The Notice will provide you with instructions regarding how to:
Q:
Why did I receive a one-page notice in the mail regarding the internet availability of proxy materials instead of a full set of proxy materials?
​
A:
Pursuant to rules adopted by the Securities and Exchange Commission (the “SEC”), we have elected to provide access to our proxy materials over the internet. Accordingly, we are sending the Notice to our stockholders of record and beneficial owners. All stockholders will have the ability to access the proxy materials on the website referred to in the Notice or request a printed set of the proxy materials. Instructions on how to access the proxy materials over the internet or to request a printed copy may be found in the Notice. In addition, stockholders may request to receive proxy materials in printed form by mail or electronically by email on an ongoing basis.
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Q:
How can I get electronic access to the proxy materials?
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A:
The Notice will provide you with instructions regarding how to:
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•
View our proxy materials for the 20162018 Annual Meeting on the Internet;internet; and
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•
Have future proxy materials sent to you electronically by email.

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Choosing to receive future proxy materials by email will save us the cost of printing and mailing documents to you and will reduce the impact of our annual meetings on the environment. If you choose to receive future proxy materials by email, you will receive an email next year with instructions containing a link to those materials and a link to the proxy voting site.

Q:
Can I attend the 2016 Annual Meeting?
A:You are invited to attend the 2016 Annual Meeting if you were a stockholder of record or a beneficial owner as of April 20, 2016 (the “Record Date”). You should bring proof of ownership and photo identification for entrance to the 2016 Annual Meeting. The meeting will begin promptly at 10:00 a.m., Pacific time and you should leave ample time for the check-in procedures. Stockholders may request directions to our principal executive offices in order to attend the 2016 Annual Meeting by calling (408) 235-7700.


Can I attend the 2018 Annual Meeting?

​

A:
You are invited to attend the 2018 Annual Meeting if you were a stockholder of record or a beneficial owner as of April 25, 2018 (the “Record Date”). You should bring proof of ownership and photo identification for entrance to the 2018 Annual Meeting. The meeting will begin promptly at 10:00 a.m. Pacific time and you should leave ample time for the check-in procedures. Stockholders may request directions to our principal executive offices in order to attend the 2018 Annual Meeting by calling (408) 235-7700.
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Q:Who is entitled to vote at the 2016 Annual Meeting?
A:​​​
Q:
Who is entitled to vote at the 2018 Annual Meeting?
​
A:
You may vote your shares of Fortinet common stock if our records show that you owned your shares at the close of business on the Record Date. At the close of business on the Record Date, there were 171,617,361 shares of Fortinet common stock outstanding and entitled to vote at the 2016 Annual Meeting. You may cast one vote for each share of common stock held by you as of the Record Date on all matters presented.
Q:What is the difference between holding shares as a stockholder of record or as a beneficial owner?
A:If your shares are registered directly in your name with Fortinet’s transfer agent, Computershare, you are considered, with respect to those shares, the “stockholder of record,” and the Notice has been sent directly to you by Fortinet. As the stockholder of record, you have the right to grant your voting proxy directly to Fortinet or to a third party, or to vote in person at the 2016 Annual Meeting.

If your shares of Fortinet common stock if our records show that you owned your shares at the close of business on the Record Date. At the close of business on the Record Date, there were 168,092,936 shares of Fortinet common stock outstanding and entitled to vote at the 2018 Annual Meeting. You may cast one vote for each share of common stock held by you as of the Record Date on all matters presented.

​
Q:
What is the difference between holding shares as a stockholder of record or as a beneficial owner?
​
A:
With respect to your shares that are registered directly in your name with Fortinet’s transfer agent, Computershare Trust Company, N.A. (“Computershare”), you are considered the “stockholder of record” and the Notice has been sent directly to you by Fortinet. As the stockholder of record, you have the right to grant your voting proxy directly to Fortinet or to a third party, or to vote in person at the 2018 Annual Meeting.
​
With respect to your shares that are held by a brokerage account or by another nominee, you are considered the “beneficial owner” of shares held in “street name,”name” and the Notice is being forwarded to you together with voting instructions on behalf of your broker, trustee or nominee. As the beneficial owner, you have the right to direct your broker, trustee or nominee how to vote, and you are also invited to attend the 20162018 Annual Meeting. Your broker, trustee or nominee has enclosed or provided voting instructions for you to use in directing the broker, trustee or nominee how to vote your shares. Because a beneficial owner is not the stockholder of record, you may not vote these shares in person at the 20162018 Annual Meeting unless you obtain a “legal proxy” from the broker, trustee or nominee that holds your shares, giving you the right to vote the shares at the 20162018 Annual Meeting. If you hold your shares through a broker and do not provide your broker with specific voting instructions, under the rules that govern brokers in such circumstances, your broker will have the discretion to vote such shares on routine matters but not on non-routine matters. Even though we are a NASDAQ-listed company,listed on The Nasdaq Stock Market LLC (“Nasdaq”), the New York Stock Exchange (“NYSE”(the “NYSE”) rules govern how a broker licensed by the NYSE can vote shares it holds on behalf of stockholders of NASDAQ-listedNasdaq-listed companies. As a result:

•
Your broker will not have the authority to exercise discretion to vote your shares with respect to the vote to adopt the Restated Certificate in order to declassify the Board of Directors, the election of directors andor the advisory resolutionvote on named executive officer compensation.
​
•
Your broker will have the authority to exercise discretion to vote your shares with respect to the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for the year ending December 31, 2016,2018, because that matter is treated as routine under NYSE rules.

​
Because the proposals to be acted upon at the 20162018 Annual Meeting include both routine and non-routine matters, if you do not give voting instructions to your broker, trustee or nominee, your broker, trustee or nominee may either (1) vote your shares on routine matters or (2) leave your shares unvoted.

A broker “non-vote” occurs when your broker, trustee or nominee does not vote on a particular proposal because the broker, trustee or nominee does not have discretionary voting power with respect to that item and has not received voting instructions from you as the beneficial owner.

Q:How can I vote my shares in person at the 2016 Annual Meeting?
A:Shares held in your name as the stockholder of record may be voted in person at the 2016 Annual Meeting. Shares held beneficially in street name may be voted in person at the 2016 Annual Meeting only if you obtain a “legal proxy” from the broker, trustee or nominee that holds your shares giving you the right to vote the shares.Even if you plan to attend the 2016 Annual Meeting, we recommend that you also submit your vote as described in the Notice and as described below, so that your vote will be counted even if you later decide not to attend the meeting.
Q:
How can I vote my shares in person at the 2018 Annual Meeting?

​

A:
Shares held in your name as the stockholder of record may be voted in person at the 2018 Annual Meeting. Shares held beneficially in street name may be voted in person at the 2018 Annual Meeting only if you obtain a “legal proxy” from the broker, trustee or nominee that holds your shares giving you the right to vote the shares. Even if you plan to attend the 2018 Annual Meeting, we recommend that you also submit your vote as described in the Notice and as described below, so that your vote will be counted even if you later decide not to attend the meeting.
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Q:How can I vote my shares without attending the 2016 Annual Meeting?
A:Whether you hold shares directly as the stockholder of record or beneficially in street name, you may direct how your shares are voted without attending the 2016 Annual Meeting. There are three ways to vote by proxy:

​​​​

Q:
How can I vote my shares without attending the 2018 Annual Meeting?
​
A:
Whether you hold shares directly as the stockholder of record or beneficially in street name, you may direct how your shares are voted without attending the 2018 Annual Meeting. There are three ways to vote by proxy:
​
By mail — If you are a stockholder of record, you may vote by submitting a proxy card —card; please refer to the voting instructions in the Notice or below. If you hold shares beneficially in street name, you may vote by submitting voting instructions to your broker, trustee or nominee —nominee; please refer to the voting instructions provided to you by your broker, trustee or nominee.

By Internetinternet — Stockholders of record of Fortinet common stock with Internetinternet access may submit proxies by following the “Vote by Internet” instructions described in the Notice until 11:59 p.m., Eastern time on Thursday, June 16, 201621, 2018 or by following the instructions atwww.envisionreports.com/www.edocumentview.com/​FTNT.Most Fortinet stockholders who hold shares beneficially in street name may vote by accessing the web sitewebsite specified in the voting instructions provided by their brokers, trustees or nominees. Please check the voting instructions for Internetinternet voting availability.

By telephone — Depending on how your shares are held, you may be able to vote by telephone. If this option is available to you, you will have received information with the Notice or the voting instruction card provided by your broker, trustee or nominee explaining this procedure.

Q:How many shares must be present or represented to conduct business at the 2016 Annual Meeting?
A:The presence of the holders of a majority of the shares entitled to vote at the 2016 Annual Meeting is necessary to constitute a quorum at the 2016 Annual Meeting. Such stockholders are counted as present at the meeting if they (1) are present in person at the 2016 Annual Meeting or (2) represented by proxy.

Q:
How many shares must be present or represented to conduct business at the 2018 Annual Meeting?
​
A:
The presence of the holders of a majority of the issued and outstanding shares of our capital stock entitled to vote at the 2018 Annual Meeting is necessary to constitute a quorum at the 2018 Annual Meeting. Such stockholders are counted as present at the meeting if they (1) are present in person at the 2018 Annual Meeting or (2) represented by proxy.
​
Under Delaware law, abstentions and broker non-votes are counted as present and entitled to vote for purposes of determining whether a quorum is present at the 20162018 Annual Meeting. However, as discussed above, under “What is the difference between holding shares as a stockholder of record or as a beneficial owner?” brokers have limited discretionary authority to vote shares that are beneficially owned and, therefore, are not entitled to vote on non-routine matters in the absence of voting instructions from the beneficial owner of such shares.

Q:What proposals will be voted on at the 2016 Annual Meeting?
A:The proposals scheduled to be voted on at the 2016 Annual Meeting are:
Q:
What proposals will be voted on at the 2018 Annual Meeting?
​
A:
The proposals scheduled to be voted on at the 2018 Annual Meeting are:
​
•
The adoption of the Restated Certificate in order to declassify the Board of Directors;
​
•
The election of the two Class I directorsdirector nominees set forth in Proposal OneTwo to serve for a termthe Board of three years or until their respective successors are duly elected and qualified;Directors;
​
•
The ratification of the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2016;2018; and
​
•
An advisory vote to approve our named executive officer compensation.
Q:What is the voting requirement to approve each of the proposals?
A:We adopted a majority voting standard for uncontested elections of directors (Proposal One), which means that to be elected, a director nominee must receive a majority of the votes cast, i.e., the number of shares voted “FOR” a director nominee must exceed the votes cast “AGAINST” that nominee.

​
Q:
What is the voting requirement to approve each of the proposals?
​
A:
The affirmative vote of at least 662∕3% of the voting power of all of the shares of our common stock outstanding as of the Record Date is required to adopt the Restated Certificate in order to declassify the Board of Directors (Proposal One).
​
We have a majority voting standard for uncontested elections of directors (Proposal Two), which means that to be elected, a director nominee must receive a majority of the votes cast, i.e. the number of shares voted “FOR” a director nominee must exceed the votes cast “AGAINST” that nominee.
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The affirmative vote of a majority of the shares of our common stock that are present in person or represented by proxy at the 20162018 Annual Meeting and entitled to vote is required to ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm (Proposal Two)Three) and to approve the advisory resolution on named executive compensation (Proposal Three)Four).

Q:How are votes counted?
A:You may vote “FOR” or “AGAINST” each of the nominees for election as director (Proposal One) and on the remaining proposals to ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm (Proposal Two) and to approve an advisory resolution on executive compensation (Proposal Three).
Q:
How are votes counted?

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​

A:
You may vote “FOR” or “AGAINST” on the proposals to adopt the Restated Certificate in order to declassify the Board of Directors (Proposal One), to ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm (Proposal Three) and to approve an advisory resolution on named executive compensation (Proposal Four), and “FOR” or “AGAINST” each of the nominees for election to the Board of Directors (Proposal Two). You may also “ABSTAIN” from voting.
​
Abstentions are deemed to be shares present or represented by proxy and entitled to vote. Abstentions have no effect on Proposal One and the same effect as a vote against Proposals TwoOne, Three and ThreeFour, and no effect on Proposal Two.
Brokers have discretionary authority to vote shares that are beneficially owned on Proposal Three. Broker non-votes are not deemed to be shares entitled to vote on and will have no effect on Proposals OneTwo, Three and Three. Brokers have discretionary authority to vote shares that are beneficially owned on Proposal Two. If a broker chooses not to vote shares for or against Proposal Two, it wouldFour. Broker non-votes will have the same effect on Proposal One as an abstention.

All shares entitled to vote and represented by properly submitted proxies received prior to the 20162018 Annual Meeting (and not revoked) will be voted at the 20162018 Annual Meeting in accordance with the instructions indicated by such proxy. If no instructions are indicated on such proxy, the shares represented by that proxy will be voted as recommended by the Board of Directors.

Q:How does the Board of Directors recommend that I vote?
A:The Board of Directors recommends that you vote your shares:
Q:
How does the Board of Directors recommend that I vote?
​
A:
The Board of Directors recommends that you vote your shares:
​
•
“FOR” the twoadoption of the Restated Certificate in order to declassify the Board of Directors (Proposal One);
​
•
“FOR” the three nominees for election as Class I directorsto the Board of Directors (Proposal One)Two);
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•
“FOR” the ratification of the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for the fiscal year ending December 31, 20162018 (Proposal Two)Three); and
​
•
“FOR” the advisory resolution onto approve named executive officer compensation (Proposal Three)Four).
Q:What happens if additional matters are presented at the 2016 Annual Meeting?
A:If any other matters are properly presented for consideration at the 2016 Annual Meeting, including, among other things, consideration of a motion to adjourn the 2016 Annual Meeting to another time or place (including, without limitation, for the purpose of soliciting additional proxies), the persons named as proxy holders, Ken Xie and John Whittle, or either of them, will have discretion to vote on those matters in accordance with their best judgment. Fortinet does not currently anticipate that any other matters will be raised at the 2016 Annual Meeting.
Q:Can I change my vote?
A:Subject to any rules your broker, trustee or nominee may have, you may change your proxy instructions at any time before your proxy is voted at the 2016 Annual Meeting.

​
Q:
What happens if additional matters are presented at the 2018 Annual Meeting?
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A:
If any other matters are properly presented for consideration at the 2018 Annual Meeting, including, among other things, consideration of a motion to adjourn the 2018 Annual Meeting to another time or place (including, without limitation, for the purpose of soliciting additional proxies), the persons named as proxy holders, Ken Xie and John Whittle, or either of them, will have discretion to vote on those matters in accordance with their best judgment. Fortinet does not currently anticipate that any other matters will be raised at the 2018 Annual Meeting.
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Q:
Can I change my vote?
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A:
Subject to any rules your broker, trustee or nominee may have, you may change your proxy instructions at any time before your proxy is voted at the 2018 Annual Meeting.
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If you are the stockholder of record, you may change your vote (1) by granting a new proxy bearing a later date (which automatically revokes the earlier proxy) using any of the methods described above (and until the applicable deadline for each method),; (2) by providing a written notice of revocation to
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Fortinet’s Corporate Secretary at Fortinet, Inc., 899 Kifer Road, Sunnyvale, CA 94086 prior to your shares being voted,voted; or (3) by attending the 20162018 Annual Meeting and voting in person. Attendance at the meeting will not cause your previously granted proxy to be revoked unless you specifically so request.

If you are a beneficial owner of shares held in street name, you may change your vote (1) by submitting new voting instructions to your broker, trustee or nominee or (2) if you have obtained a legal proxy from the broker, trustee or nominee that holds your shares giving you the right to vote your shares, by attending the 20162018 Annual Meeting and voting in person.

Q:What happens if I decide to attend the 2016 Annual Meeting, but I have already voted or submitted a proxy card covering my shares?
A:Subject to any rules your broker, trustee or nominee may have, you may attend the 2016 Annual Meeting and vote in person even if you have already voted or submitted a proxy card. Any previous votes that were submitted by you will be superseded by the vote you cast at the 2016 Annual Meeting. Please be aware that attendance at the 2016 Annual Meeting will not, by itself, revoke a proxy.

Q:
What happens if I decide to attend the 2018 Annual Meeting, but I have already voted or submitted a proxy card covering my shares?
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A:
Subject to any rules your broker, trustee or nominee may have, you may attend the 2018 Annual Meeting and vote in person even if you have already voted or submitted a proxy card. Any previous votes that were submitted by you will be superseded by the vote you cast at the 2018 Annual Meeting. Please be aware that attendance at the 2018 Annual Meeting will not, by itself, revoke a proxy.
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If a broker, trustee or nominee beneficially holds your shares in street name and you wish to attend the 20162018 Annual Meeting and vote in person, you must obtain a legal proxy from the broker, trustee or nominee that holds your shares giving you the right to vote the shares. If you are a beneficial owner and you wish to attend the 20162018 Annual Meeting but do not intend to vote in person or revoke your prior voting instructions, you do not need to obtain a legal proxy but you will need to bring proof of ownership and photo identification.

Q:
What should I do if I receive more than one set of voting materials?

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A:
If you received more than one Notice, voting instruction card or set of proxy materials, your shares are registered in more than one name or brokerage account. Please follow the instructions on each Notice or voting instruction card that you receive to ensure that all of your shares are voted.
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Q:
Is my vote confidential?
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A:
Proxy instructions, ballots and voting tabulations that identify individual stockholders are handled in a manner that protects your voting privacy. Your vote will not be disclosed either within Fortinet or to third parties, except: (1) as necessary to meet applicable legal requirements, (2) to allow for the tabulation of votes and certification of the vote and (3) to facilitate a successful proxy solicitation. Occasionally, stockholders provide written comments on their proxy cards, which may be forwarded to Fortinet management.
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Q:
Who will serve as inspector of election?
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A:
The inspector of election will be a representative of Computershare.
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Q:
Where can I find the voting results of the 2018 Annual Meeting?
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A:
We will announce preliminary voting results at the 2018 Annual Meeting. We will disclose final voting results in a Current Report on a Form 8-K filed with the SEC within four business days after the 2018 Annual Meeting.
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Q:
Who will bear the cost of soliciting votes for the 2018 Annual Meeting?
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A:
Fortinet will pay the entire cost of preparing, assembling, printing, mailing and distributing these proxy materials and soliciting votes. We may reimburse brokerage firms, custodians, nominees, fiduciaries and other persons representing beneficial owners for their reasonable expenses in forwarding solicitation material to such beneficial owners. Our directors, officers and employees may also solicit proxies in person or by other means of communication. Such directors, officers and employees will not be additionally compensated but may be reimbursed for reasonable out-of-pocket expenses in connection with such solicitation.
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Q:What should I do if I receive more than one set of voting materials?
A:If you received more than one Notice, voting instruction card or set of proxy materials, your shares are registered in more than one name or brokerage account. Please follow the instructions on each Notice or voting instruction card that you receive to ensure that all of your shares are voted.
Q:Is my vote confidential?
A:Proxy instructions, ballots and voting tabulations that identify individual stockholders are handled in a manner that protects your voting privacy. Your vote will not be disclosed either within Fortinet or to third parties, except: (1) as necessary to meet applicable legal requirements, (2) to allow for the tabulation of votes and certification of the vote and (3) to facilitate a successful proxy solicitation. Occasionally, stockholders provide written comments on their proxy cards, which may be forwarded to Fortinet management.
Q:Who will serve as inspector of election?
A:The inspector of election will be a representative of Computershare.
Q:Where can I find the voting results of the 2016 Annual Meeting?
A:We will announce preliminary voting results at the 2016 Annual Meeting and publish them on our web site atinvestor.fortinet.com/annual-proxy.cfm. We will also disclose voting results on a Form 8-K filed with the SEC within four business days after the 2016 Annual Meeting, which will also be available on our website.
Q:Who will bear the cost of soliciting votes for the 2016 Annual Meeting?
A:Fortinet will pay the entire cost of preparing, assembling, printing, mailing and distributing these proxy materials and soliciting votes. We may reimburse brokerage firms, custodians, nominees, fiduciaries and other persons representing beneficial owners for their reasonable expenses in forwarding solicitation material to such beneficial owners. Our directors, officers and employees may also solicit proxies in person or by other means of communication. Such directors, officers and employees will not be additionally compensated but may be reimbursed for reasonable out-of-pocket expenses in connection with such solicitation.

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If you choose to access the proxy materials and/or vote over the Internet,internet, you are responsible for Internetinternet access charges you may incur. If you choose to vote by telephone, you are responsible for telephone charges you may incur.

Q:What is the deadline to propose actions for consideration at next year’s annual meeting of stockholders or to nominate individuals to serve as directors?
A:You may submit proposals, including nominations of director candidates, for consideration at future stockholder meetings.

Q:
What is the deadline to propose actions for consideration at next year’s annual meeting of stockholders or to nominate individuals to serve as directors?
​
A:
You may submit proposals, including nominations of director candidates, for consideration at future stockholder meetings.
​
For inclusion in Fortinet’s proxy materials — Stockholders may present proper proposals for inclusion in Fortinet’s proxy statement and for consideration at the next annual meeting of stockholders by submitting their proposals in writing to Fortinet’s Corporate Secretary in a timely manner. In order to be included in the proxy statement for the 2017Fortinet’s 2019 Annual Meeting of Stockholders (the “2019 Annual Meeting”), stockholder proposals must be received by Fortinet’s Corporate Secretary no later than December 30, 2016,January 11, 2019, and must otherwise comply with the requirements of Rule 14a-8 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”).

To be brought before the annual meeting — In addition, Fortinet’s bylaws establish an advance notice procedure for stockholders who wish to present certain matters before an annual meeting of stockholders. In general, nominations for the election of directors may be made (1) by or at the direction of the Board of Directors or (2) by a stockholder who has delivered written notice to Fortinet’s Secretary within the Notice Period (as defined below) and who was a stockholder at the time of such notice and as of the record date. The notice must contain specified information about the nominees and about the stockholder proposing such nominations.


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Fortinet’s bylaws also provide that the only business that may be conducted at an annual meeting is business that is (1) properly brought before the meeting pursuant to Fortinet’s proxy materials with respect to such meeting, (2) properly brought before the meeting by or at the direction of the Board of Directors or (3) properly brought before the meeting by a stockholder who has delivered written notice to Fortinet’s Corporate Secretary at its principal executive offices within the Notice Period (as defined below) and who was a stockholder at the time of such notice and as of the record date. The notice must contain specified information about the matters to be brought before such meeting and about the stockholder proposing such matters.

The “Notice Period” is defined as that period not less than 45 days nor more than 75 days prior to the one year anniversary of the date on which Fortinet mailed its proxy materials or the Notice (whichever is earlier) to stockholders in connection with the preceding year’s annual meeting of stockholders. As a result, the Notice Period for the 20172019 Annual Meeting will start on February 13, 201725, 2019 and end on March 15, 2017.

27, 2019.

If a stockholder who has notified Fortinet of his or hersuch stockholder’s intention to present a proposal at an annual meeting does not appear to present his or hersuch stockholder’s proposal at such meeting, Fortinet need not present the proposal for vote at such meeting.

A copy of the full text of the bylaw provisions discussed above may be obtained by writing to Fortinet’s Corporate Secretary at our principal executive offices or by accessing Fortinet’s filings on the SEC’s website atwww.sec.gov. All notices of proposals by stockholders, whether or not included in Fortinet’s proxy materials, should be sent to Fortinet’s Corporate Secretary at our principal executive offices.

Q:How may I obtain a separate set of proxy materials or the 2015 Annual Report?
A:If you share an address with another stockholder, each stockholder may not receive a separate copy of our proxy materials and 2015 Annual Report. Stockholders who do not receive a separate copy of our proxy materials and 2015 Annual Report and want to receive a separate copy may request to receive a separate copy of, or stockholders may request additional copies of, our proxy materials and 2015 Annual Report by calling (408) 235-7700 or by writing to Fortinet, Inc., 899 Kifer Road, Sunnyvale, CA 94086, Attention: Investor Relations. Stockholders who share an address and receive multiple copies of our proxy materials and 2015 Annual Report can also request to receive a single copy by following the instructions above.
Q:
How may I obtain a separate set of proxy materials or the 2017 Annual Report?

​

A:
If you share an address with another stockholder, each stockholder may not receive a separate copy of our proxy materials and 2017 Annual Report. Stockholders who do not receive a separate copy of our proxy materials and 2017 Annual Report and want to receive a separate copy may request to receive a separate copy of, or stockholders may request additional copies of, our proxy materials and 2017 Annual Report by calling (408) 235-7700 or by writing to Fortinet, Inc., 899 Kifer Road, Sunnyvale, CA 94086, Attention: Investor Relations. Stockholders who share an address and receive multiple copies of our proxy materials and 2017 Annual Report can also request to receive a single copy by following the instructions above.
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PROPOSAL ONE

ADOPTION OF AN AMENDED AND RESTATED CERTIFICATE OF INCORPORATION IN ORDER TO DECLASSIFY THE BOARD OF DIRECTORS AND MAKE OTHER RELATED CHANGES
Under our current amended and restated certificate of incorporation (the “Current Certificate”), the Board of Directors is divided into three classes, with members of each class holding office for staggered three-year terms. We are asking stockholders to adopt the Restated Certificate in order to declassify the Board of Directors and provide for the annual election of directors, as well as to revise related provisions of the Current Certificate, as described below. The Board of Directors has approved the proposed Restated Certificate and declared it to be advisable and in the best interests of Fortinet and its stockholders, and recommends that the stockholders adopt the Restated Certificate.
The proposed Restated Certificate would implement a gradual declassification of the Board of Directors and provide for the annual election of directors for one-year terms, commencing upon the expiration of the directors’ current terms. If adopted by the stockholders, the Restated Certificate would first apply to directors standing for election beginning with the 2018 Annual Meeting, and the declassification of the Board of Directors would be phased in over a period of two years. The Restated Certificate would not shorten the existing terms of the Class I and Class II directors. Accordingly, directors who previously have been elected for three-year terms or portions thereof  (excluding directors nominated for election at the 2018 Annual Meeting) will be entitled to complete those terms, and thereafter they or their successors would be elected for one-year terms at each annual meeting of stockholders. Beginning with the 2020 Annual Meeting of Stockholders (the “2020 Annual Meeting”), the entire Board of Directors would stand for election annually for one-year terms.
If our stockholders approve this proposal (and if the Board of Directors does not abandon the proposed Restated Certificate after it is adopted by the stockholders), the director nominees set forth in Proposal Two will stand for re-election at the 2018 Annual Meeting for one-year terms expiring at the 2019 Annual Meeting. If our stockholders do not approve this proposal (or if the Board of Directors abandons the proposed Restated Certificate after it is adopted by the stockholders), the director nominees set forth in Proposal Two will stand for re-election at the 2018 Annual Meeting for three-year terms expiring at the 2021 Annual Meeting of Stockholders (the “2021 Annual Meeting”).
In addition, Delaware law provides that directors serving on boards of directors that are not classified may be removed for or without cause, whereas currently our directors can be removed only for cause since the Board of Directors is classified. The Restated Certificate would permit stockholders to remove directors elected for one-year terms with or without cause. Directors in a class that is serving out the remainder of a three-year term would continue to be removable only for cause.
The description of the proposed Restated Certificate set forth above is qualified in its entirety by reference to the text of the Restated Certificate, which is attached as Appendix A to this proxy statement. Additions to the Current Certificate are indicated by underlining, and deletions to the Current Certificate are indicated by strike-outs.
In deciding to approve the Restated Certificate and to recommend that the stockholders vote to adopt the Restated Certificate, the Board of Directors considered the advantages and disadvantages of maintaining a classified board structure. A classified Board of Directors can benefit stockholders by: promoting continuity and stability of the Board of Directors; encouraging directors to take a long-term perspective; reducing Fortinet’s vulnerability to coercive takeover tactics and special interest groups that may not be acting in the best interests of all stockholders; and enhancing the independence of non-management directors by providing them with a longer term of office and insulating them against pressure from management or special interest groups. While the Board of Directors continues to believe that these are important benefits, the Board of Directors, on its own initiative, has also considered that a classified board structure may have the effect of reducing the accountability of directors to stockholders, and recognizes the benefit of providing stockholders an annual opportunity to express their satisfaction or dissatisfaction with the actions of the Board of Directors. In addition, the Board of Directors believes it is important for the Board of Directors to maintain stockholder confidence by demonstrating that it is
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responsive and accountable to stockholders and committed to strong corporate governance. Therefore, following careful consideration of the matter, and due to its belief that a declassified board structure provides more accountability to stockholders and promotes stronger corporate governance, the Board of Directors, on its own initiative, has adopted resolutions to approve the Restated Certificate, to declare the Restated Certificate advisable and in the best interests of Fortinet and its stockholders and to submit the Restated Certificate to its stockholders for consideration.
In connection with its approval of the proposed Restated Certificate, the Board of Directors has also approved amended and restated bylaws (the “Restated Bylaws”), which shall become effective upon and subject to stockholder approval of this proposal and effectiveness of the Restated Certificate. The Restated Bylaws would permit stockholders to remove directors as provided in the Restated Certificate. The Restated Bylaws do not require stockholder approval.
The affirmative vote of at least 662∕3% of the voting power of all of the shares of our common stock outstanding as of the Record Date is required to adopt the Restated Certificate to declassify the Board of Directors. If our stockholders adopt the Restated Certificate, the Board of Directors has authorized our officers to file the Restated Certificate with the Delaware Secretary of State, and the Restated Certificate would become effective upon acceptance by the Delaware Secretary of State. The Board of Directors intends to make that filing if and as soon as practicable after this proposal is approved at the meeting. However, even if our stockholders adopt the Restated Certificate, the Board of Directors may abandon the Restated Certificate without further stockholder action prior to the effectiveness of the filing of the Restated Certificate with the Delaware Secretary of State and, if abandoned, the Restated Certificate will not become effective. If the Board of Directors abandons the Restated Certificate, it will publicly disclose that fact and the reason for its determination.
If this proposal is not approved, or if the Board of Directors abandons the Restated Certificate, then the Restated Certificate and the Restated Bylaws will not be adopted, and the current classified structure of the Board of Directors, the Current Certificate and Fortinet’s current bylaws will remain in place.
THE BOARD OF DIRECTORS RECOMMENDS A VOTE
“FOR” THE ADOPTION OF THE RESTATED CERTIFICATE.
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PROPOSAL TWO
 
ELECTION OF DIRECTORS

General

Our

The Board of Directors currently consists of seveneight members who are divided into three classes with staggered three-year terms. Each director holds office until that director’s successor is duly elected and qualified. Our bylaws permit ourthe Board of Directors to establish by resolution the authorized number of directors, and seveneight directors are currently authorized. Any increase or decrease in the number of directors will be distributed among the three classes so that, as nearly as possible, each class will consist of one thirdone-third of the directors.

Nominees

Two candidates have been nominated for election as

Whether or not our stockholders approve Proposal One, the terms of the Class I directors and Class II directors will expire at the 2019 Annual Meeting and the 2020 Annual Meeting, respectively. If our stockholders do not approve Proposal One (or if the Board of Directors abandons the proposed Restated Certificate after it is adopted by the stockholders), the director nominees for Class III directors will stand for re-election at the 2018 Annual Meeting for three-year terms expiring at the 2021 Annual Meeting.
If our stockholders approve Proposal One (and if the Board of Directors does not abandon the proposed Restated Certificate after it is adopted by the stockholders), the declassification of the Board will occur as follows:
•
the terms of office of those directors elected at the 2018 Annual Meeting will expire at the 2019 Annual Meeting;
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•
the continuing directors whose current terms will expire at the 2019 Annual Meeting and the 2020 Annual Meeting (the Class I directors and the Class II directors, respectively) will serve the remainder of their terms;
​
•
at the 2019 Annual Meeting, the directors elected at the 2018 Annual Meeting and the directors elected at the 2016 Annual Meeting of Stockholders (the Class I directors) will be up for election and the nominees for director at the 2019 Annual Meeting will stand for election for a three-yearone-year term expiring in 2019. at the 2020 Annual Meeting; and
​
•
beginning with the 2020 Annual Meeting, all the nominees for director will stand for election for one-year terms expiring at the next annual meeting of stockholders.
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Directors, whether serving one- or three-year terms, shall serve until their successors are elected and qualified or until their earlier death, resignation or removal.
If our stockholders adopt the Restated Certificate, the Board of Directors currently intends to file the Restated Certificate with the Delaware Secretary of State before the election of directors at the 2018 Annual Meeting.
Nominees
Upon recommendation of the Nominating and Corporate Governance Committee of the Board of Directors (the “Governance Committee”), the Board of Directors has nominated Ming HsiehKen Xie, Gary Locke and Christopher B. PaisleyJudith Sim for election at the 2018 Annual Meeting. If our stockholders approve Proposal One (and the Board of Directors does not abandon the proposed Restated Certificate after it is adopted by the stockholders), each of the nominees would be elected for a one-year term expiring at the 2019 Annual Meeting. If our stockholders do not approve Proposal One (or the Board of Directors abandons the proposed Restated Certificate after it is adopted by the stockholders), each of the nominees would be elected as Class I directors. III directors for a three-year term expiring at the 2021 Annual Meeting.
Biographical information about each of the nominees is contained in the following section. A discussion of the qualifications, attributes and skills of each nominee that led ourthe Board of Directors and the Nominating and Corporate Governance Committee to the conclusion that hesuch nominee should serve as a director has been added following each of the director and nominee biographies.

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Each person nominated for electionnominee has agreed to serve if elected, and management has no reason to believe that any nominee will be unavailable to serve. In the event any nominee is unable or declines to serve as a director at the time of the 20162018 Annual Meeting, the proxies will be voted for any nominee who may be proposed by the Nominating and Corporate Governance Committee and designated by the present Board of Directors to fill the vacancy.

If you sign your proxy card or voting instruction card or vote by telephone or over the Internetinternet but do not give instructions with respect to the voting of directors, your shares will be voted for the two personsthree nominees recommended by ourthe Board of Directors. If you wish to give specific instructions with respect to the voting of directors, you may do so by indicating your instructions on your proxy or voting instruction card or when you vote by telephone or over the Internet.internet. If you do not give voting instructions to your broker, your broker will leave your shares unvoted on this matter.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE
“FOR” THE ELECTION OF MING HSIEHKEN XIE, GARY LOCKE AND CHRISTOPHER B. PAISLEY.JUDITH SIM.

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Information Regarding the Board of Directors and Director Nominees

The names of the members of ourthe Board of Directors and our proposed director nominees, their respective ages, their positions with Fortinet (as applicable) and other biographical information as of March 31, 2016,2018, are set forth below.

Messrs. Ken Xie and Michael Xie are brothers. There are no other family relationships among any of our directors or executive officers.

Name​​Age​​Position​
Ken Xie​​5355​​Chief Executive Officer, and Chairman of the Board of Directors and Director Nominee​
Michael Xie​​4749​​President, Chief Technology Officer and Director​
Peter D. Cohen(1)(2)​​51​​Director​
Ming Hsieh(1)(2)(3)​​6062​​Director​
Gary Locke(2)**​​68​​Director and Director Nominee
Gary Locke(3)***66Director​
William H. Neukom(1)(2)(3)**†​​7476​​Director​
Christopher B. Paisley(1)(2)(3)*†**​​6365​​Director​
Judith Sim(2)(3)​​49​​Director and Director Nominee
Judith Sim(1)47Director​
​

(1)Member of Audit Committee.
(2)Member of Compensation Committee.
(3)Member of Nominating and Corporate Governance Committee.
*Chairman of Audit Committee.
**Chairman of Compensation Committee.
***Chairman of Nominating and Corporate Governance Committee.
†Lead Independent Director.

(1)
Member of the Human Resources Committee.
​
(2)
Member of the Governance Committee.
​
(3)
Member of the Audit Committee.
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*
Chairman of the Human Resources Committee.
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**
Chairman of the Governance Committee.
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***
Chairman of the Audit Committee.
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†
Effective April 30, 2018, the Board of Directors appointed Mr. Neukom as Lead Independent Director.
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Ken Xie has served as our Chief Executive Officer and a member of our Board of Directors since he co-founded the companyFortinet in October 2000. He previously served as our President until November 2013. Prior to co-founding Fortinet, Mr. Ken Xie was the Founder, President and Chief Executive Officer of NetScreen Technologies, Inc. (“NetScreen”), a provider of network security products, which was acquired by Juniper Networks, Inc., an IP network solutions company, in April 2004. Additionally, Mr. Ken Xie was Chief Executive Officer of SIS, Inc. and is a member of the National Academy of Engineering. In addition to our Board of Directors, Mr. Ken Xie has served on the board of directors of TeleNav, Inc. since July 2012. Mr. Ken Xie received a B.S. and an M.S. in electrical engineering from Tsinghua University in China and an M.S. in electrical engineering from Stanford University.

Mr. Ken Xie has more than 2025 years of technical and management experience in the networking and security industries, which includes his roles as a founder of Fortinet, NetScreen and SIS and as President and Chief Executive Officer of each of the foregoing companies.

The Board of Directors also believes Mr. Ken Xie provides valuable perspective and experience as a co-founder of Fortinet and one of its largest stockholders.

Michael Xie has served as our President and Chief Technology Officer since November 2013 and as a member of our Board of Directors since February 2001. He previously served as our Vice President of Engineering and Chief Technology Officer sinceafter co-founding the companyFortinet in October 2000. Prior to co-founding Fortinet, he held positions as Vice President of Engineering for ServGate Technologies, Inc., a network security provider that was acquired by Amarium Technologies, Inc. in April 2006, Software
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Director and Architect for NetScreen and Senior Software Engineer for Milkyway Networks Corporation, a network security solutions provider. Mr. Michael Xie has an M.S. degree in electrical engineering from the University of Manitoba in Canada, as well as a B.S. and an M.S. in automobile engineering from Tsinghua University in China.

Mr. Michael Xie has more than 1520 years of technical and operational experience in the network security industry, which includes positions as the President and Chief Technology Officer of Fortinet, the Vice President of Engineering forof ServGate Technologies, Inc. and the Software Director and Architect of NetScreen. The Board of Directors believes that Mr. Michael Xie’s deep technical knowledge is invaluable in developing and improving Fortinet’s technology and network security products. The Board of Directors also believes Mr. Michael Xie provides valuable perspective and experience as a co-founder of Fortinet and one of its largest stockholders.
Peter D. Cohen has served as a member of our Board of Directors since July 2017. Since January 2016, Mr. Cohen has served as the Chief Executive Officer of Xendota, Inc., a cloud technology strategy and research company that Mr. Cohen co-founded. Since June 2014, Mr. Cohen has provided technology and business advisory services to various cloud computing companies. From May 2008 to June 2014, Mr. Cohen was the Director of Strategic Business Development and Corporate Development for NetScreen.

Amazon Web Services, Inc., a cloud computing and infrastructure company. From September 2003 to May 2008, Mr. Cohen served in senior business and technical roles for AWS as a founding member of the company. Since August 2017, Mr. Cohen has also served as a strategic advisor to Bespin Global Co, Ltd., a cloud IT solutions company. Mr. Cohen received a B.A. in Slavic Languages and Literature from the University of Virginia in 1989.

Mr. Cohen has extensive knowledge and leadership experience in cloud computing and technology companies.

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Ming Hsieh has served as a member of our Board of Directors since April 2013. Mr. Hsieh has served as the Chairman and Chief Executive Officer of Fulgent Therapeutics Inc., a cancer drug research and development company, since September 2012. From October 2010 to June 2012, Mr. Hsieh served as the President of 3M Cogent, Inc., a provider of global biometric identification solutions, following the acquisition of Cogent, Inc. by 3M Company in 2010. Prior to the acquisition, Mr. Hsieh served as the Chief Executive Officer, President and Chairman of the board of directors of Cogent since founding Cogent in 1990. Prior to that, Mr. Hsieh was a research and development engineer at International Rectifier Corporation, a manufacturer of semiconductors, from 1985 to 1987. Mr. Hsieh received a B.S.E.E. from the University of Southern California in 1983 and an M.S.E.E. from University of Southern California in 1984.

Mr. Hsieh has leadership, operational and executive experience by serving as Chief Executive Officer, President and Chairman of the board of directors of Cogent, Inc.

Cogent.

Gary Lockehas served as a member of our Board of Directors since September 2015. Mr. Locke is the chairman of Locke Global Strategies LLC, through which he provides strategic advice and consulting services to businesses in the United States and China. Mr. Locke is the former Governor of the State of Washington, serving two consecutive terms from 1997 to 2005. With more than 20 years of public service leadership, Mr. Locke brings extensive knowledge on corporate and global issues related to the cybersecurity challenges of government organizations. From 2009 to 2011, Mr. Locke ranwas the U.S. DepartmentUnited States Secretary of Commerce as the Commerce Secretary.Commerce. He also served as the United States Ambassador to China from 2011 until 2014. Since February 2016, Mr. Locke has served on the board of directors of AMC Entertainment Holdings, Inc., an American movie theater chain. In addition to his public service, Mr. Locke has extensive experience in international law and government relations. Mr. Locke received a B.A. in political science from Yale University and a J.D. from Boston University.

Mr. Locke has committed more than 20 years to public service and has extensive leadership and executive experience from his roles as the Governor of Washington, Secretary of Commerce and U.S. Ambassador to China.

William H. Neukom has served as a member of our Board of Directors since January 2013. From October 2008 to December 2011,2013 and has served as our Lead Independent Director since April 2018. Mr. Neukom wasis the Managing General PartnerFounder and Chief Executive Officer of San Francisco Baseball Associates, L.P., the ownership groupWorld Justice Project, an organization devoted to promoting the rule of law
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throughout the world. He is a retired partner in the Seattle office of the international law firm K&L Gates LLP and is a lecturer at Stanford Law School, where he teaches a seminar on the rule of law. He is a member of the Dean’s Council at Stanford Law School and was its chair from 2012 to 2015. Mr. Neukom was the Chief Executive Officer of the San Francisco Giants major league baseball team from 2008 to 2011, and served as its Chairman Emeritus during 2012. He is a trustee emeritus of Dartmouth College, having served as chair of the board from 2004 to 2007, and was president of the American Bar Association from 2007 to 2008. Mr. Neukom iswas previously the Founder,lead lawyer for Microsoft Corporation for nearly 25 years, managing its legal, government affairs and philanthropic activities. He retired from Microsoft as its Executive Vice President of Law and Chief Executive Officer of the World Justice Project, a 501(c)(3) organization, whichCorporate Affairs in 2002, when he founded in 2006. He was a partner of the international law firmreturned to Preston, Gates & Ellis LLP and served as the firm’s chairman from 1979 to 1985 and from 2002 through2003 until its merger with Kirkpatrick and& Lockhart Nicholson Graham LLP in 2007 and was appointed its Chairman in 2004.2007. Mr. Neukom is currently a retired partner inalso serves on the Seattle officeboard of K&L Gates LLP. From 1985 to 2002,several not-for-profit organizations. Mr. Neukom was the Head of Law and Corporate Affairs for Microsoft Corporation. Mr. Neukom receivedearned an A.B. from Dartmouth College and an LL.B. from Stanford University.

Mr. Neukom has business leadership, operational, legal and executive experience as a result of his service as Managing General Partner and Chief Executive Officer of the San Francisco Baseball Associates, L.P.,as President of the American Bar Association, as a partner at an international law firm and as the HeadExecutive Vice President of Law and Corporate Affairs for Microsoft Corporation.

Microsoft. The Board of Directors believes that Mr. Neukom, with his experience with the technology industry and his expertise in legal, governance and compliance matters, brings a unique and valuable perspective to the Board of Directors.

Christopher B. Paisleyhas served as a member of our Board of Directors since February 2004 and served as our Lead Independent Director sincefrom July 2012.2012 until April 2018. Since January 2001, Mr. Paisley has served as the Dean’s Executive Professor of Accounting at the Leavey School of Business at Santa Clara University. Mr. Paisley also serves as lead independent director of Equinix, Inc., a provider of network colocation, interconnection and managed services, a member of the board of directors of Fitbit, Inc., a connected health and fitness company, and a member of the board of directors of Ambarella, Inc., a developer of low-power, high-definition video compression and image processing semiconductors, and a member of the board of directors of YuMe, Inc., a provider of digital video brand advertising solutions. He alsosemiconductors. Mr. Paisley previously served as a director of Volterra Semiconductor, Inc., a provider of power management semiconductors, from April 2007, and2000, including as its Chairman of the Board of Directors from August 2007, until its acquisition by Maxim Integrated Products, Inc. in October 2013, a director of Bridge Capital Holdings, a bank holding company,Bank from August 2011 until June 2015, and a director of Control4, Corporation, a home automation company, from May 2006 until August 2015.2015 and a director of YuMe, Inc., a provider of digital video brand advertising solutions, from November 2012 until its acquisition by RhythmOne plc in February 2018. Mr. Paisley holds a B.A. in business economics from the University of California at Santa Barbara and an M.B.A. from the Anderson School at the University of California at Los Angeles.


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Mr. Paisley has developed expertise in finance, including accounting and financial reporting, as a Chief Financial Officer of 3Com Corporation and in other finance roles and currently as a professor in the field of accounting and finance. Mr. Paisley also has over 15 years of outside board experience at the aforementioned companies and numerous other public and private companies.

Judith Sim has served as a member of our Board of Directors since June 2015. Ms. Sim joined Oracle Corporation in 1991 and has held various customer-related and marketing positions at Oracle, including most recently as its Chief Marketing Officer since 2005. Ms. Sim received a B.S. in dietetics from the University of California at Davis.

Ms. Sim has leadership and executive experience from her position as head of marketing programs at Oracle, including experience in field marketing, corporate communications, global customer programs, advertising, campaigns, events and corporate branding.

See “Corporate Governance” and “Executive Compensation — Compensation of Directors” for additional information regarding the Board of Directors.


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PROPOSAL TWOTHREE
 
RATIFICATION OF APPOINTMENT OF
INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

General

The Audit Committee of the Board of Directors (the “Audit Committee”) has selected Deloitte & Touche LLP as Fortinet’s independent registered public accounting firm to audit the financial statements of Fortinet for the fiscal year ending December 31, 2016,2018, which will include an audit of the effectiveness of Fortinet’s internal control over financial reporting. A representative of Deloitte & Touche LLP is expected to be present at the 20162018 Annual Meeting, will have the opportunity to make a statement if he or shesuch representative desires to do so and is expected to be available to respond to appropriate questions.

If the appointment is not ratified, the Audit Committee will consider whether it should select other independent auditors. Even if the appointment is ratified, the Audit Committee, in its discretion, may direct the appointment of a different independent registered public accounting firm as Fortinet’s independent auditors at any time during the year if the Audit Committee determines that such a change would be in Fortinet’s and its stockholders’ best interests.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” THE RATIFICATION OF THE
APPOINTMENT OF DELOITTE & TOUCHE LLP AS FORTINET’S INDEPENDENT REGISTERED
PUBLIC ACCOUNTING FIRM FOR THE FISCAL YEAR ENDING DECEMBER 31, 2016.

2018.

Principal Accounting Fees and Services

The following table presents fees billed for professional audit services and other services rendered to Fortinet by Deloitte & Touche LLP for the years ended December 31, 20152017 and December 31, 2014.

2016.
​​​2017​​2016​
Audit Fees(1)
​​​$3,043,457​​​​$3,087,330​​
Audit-Related Fees(2)
​​​​58,500​​​​​644,903​​
Tax Fees(3)
​​​​448,699​​​​​533,392​​
All Other Fees(4)
​​​​1,895​​​​​2,000​​
Total​​​$3,552,551​​​​$4,267,625​​
​
  
 2015 2014
Audit Fees(1) $2,045,019  $1,695,284 
Tax Fees(2)  376,208   429,626 
Other Fees(3)  26,950   10,500 
Total $2,488,177  $2,135,410 
​

(1)Total Audit Fees consist of fees for professional services provided in connection with the audit of our annual consolidated financial statements, audit of our internal control over financial reporting, the review of our quarterly consolidated financial statements, and audit services that are normally provided by the independent registered public accounting firm in connection with statutory and regulatory filings or engagements for those fiscal years, such as statutory audits.
(2)Tax Fees consist of fees for services mainly related to Federal and state income tax compliance, study related to research and development credits, domestic production activities and section 382 analysis in connection with the acquisition of Meru Networks, Inc.
(3)Other Fees consist of products and services provided by Deloitte & Touche LLP that are not included in the service categories reported above.

(1)
Audit Fees consist of fees for professional services provided in connection with the audit of our annual consolidated financial statements, audit of our internal control over financial reporting, the review of our quarterly consolidated financial statements and audit services that are normally provided by the independent registered public accounting firm in connection with statutory and regulatory filings for those fiscal years.
​
(2)
Audit-Related Fees consist of fees for assurance and related services that are reasonably related to the performance of the audit or review of our consolidated financial statements and which are not reported under Audit Fees above. Audit-Related Fees were related to internal control reviews pertaining to our implementation of an enterprise resource planning system in 2016 and a new revenue recognition system in 2017.
​
(3)
Tax Fees consist of fees for services related to federal and state income tax compliance, transfer pricing review, reports related to research and development credits and domestic production activities. In 2016, Tax Fees also included fees related to an earnings and profit study. In 2017, Tax Fees also included consulting fees related to country-by-country reporting and tax reform.
​
(4)
All Other Fees consist of products and services provided by Deloitte & Touche LLP that are not included in the service categories reported above.
​
​
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Approval of Audit and Non-Audit Services

Pursuant to its charter, the Audit Committee is required to (i) review and approve, in advance, the scope and plans for all audits and audit fees and (ii) approve, in advance, all non-audit services to be performed by our independent auditor that are not otherwise prohibited by law and any associated fees.

All Deloitte & Touche LLP services and fees in fiscal 20152017 and fiscal 20142016 were approved by the Audit Committee.


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PROPOSAL THREEFOUR
 
ADVISORY VOTE TO APPROVE NAMED EXECUTIVE OFFICER COMPENSATION

As required by ScheduleSection 14A of the Securities Exchange Act and the corresponding rules of the SEC, rules, Fortinet is seeking stockholder approval, on an advisory orand non-binding basis, of the compensation of our named executive officers as disclosed in accordance with the SEC’s rules in the“Executive Compensation”Compensation” section of this proxy statement. This proposal, commonly known as a “say-on-pay” proposal, gives our stockholders the opportunity to express their views on our named executive officers’ compensation as a whole. This vote is not intended to address any specific item of compensation or any specific named executive officer but rather the overall compensation of all of our named executive officers and the compensation philosophy, policies and practices described in this proxy statement.

The say-on-pay vote is advisory, and therefore not binding on Fortinet, the CompensationHuman Resources Committee of the Board of Directors (the “Human Resources Committee”) or ourthe Board of Directors. Following the 20162018 Annual Meeting, the next such non-binding advisory vote to approve our named executive officers’ compensation as a whole is scheduled to occur at the 20172019 Annual Meeting.

Our

The Board of Directors and our Compensationthe Human Resources Committee value the opinions of our stockholders and the say-on-pay vote provides information to us regarding investorstockholder sentiment about our executive compensation philosophy, policies and practices, which the CompensationHuman Resources Committee will be able to consider when determining executive compensation for the remainder of the current fiscal year and beyond. To the extent there is any significant vote against the compensation of our named executive officer compensationofficers as disclosed in this proxy statement, we will consider our stockholders’ concerns, and the CompensationHuman Resources Committee will evaluate whether any actions are necessary to address those concerns. We believe that the information we have provided in the“Executive Compensation”Compensation” section of this proxy statement, and in particular the information discussed in“Executive Compensation — Compensation Discussion and Analysis,” demonstrates that our executive compensation program was designed appropriately and is working to ensure management’sour executive officers’ interests are aligned with our stockholders’ interests. Accordingly, we ask our stockholders to vote “FOR” the following resolution at the 20162018 Annual Meeting:

“RESOLVED, that Fortinet’s stockholders approve, on an advisory basis, the compensation of the named executive officers, as disclosed in Fortinet’s proxy statement for the 20162018 Annual Meeting pursuant to the Item 402 of Regulation S-K, including the Compensation Discussion and Analysis, the compensation tables and narrative discussion and the other related disclosure.”

THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” THIS PROPOSAL.


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CORPORATE GOVERNANCE

Code of Business Conduct and Ethics

Our

The Board of Directors sets high standards for Fortinet’s employees, officers and directors. Fortinet is committed to establishing an operating framework that exercises appropriate oversight of responsibilities at all levels throughout Fortinet and managing its affairs consistentconsistently with high principles of business ethics. Accordingly, Fortinet has adopted a Code of Business Conduct and Ethics, which is applicable to our and our subsidiaries’ directors, officers and employees.
The Code of Business Conduct and Ethics is available on Fortinet’s website atinvestor.fortinet.com/governance.cfm​corporate-governance.cfm. Fortinet will disclose on its website any amendmentamendments to, the Code of Business Conduct and Ethics, as well as anyor waivers of, the Code of Business Conduct and Ethics that are required to be disclosed by the rules of the SEC or The NASDAQ Stock Market LLC (“NASDAQ”).

Nasdaq.

Corporate Governance Guidelines

We have adopted Corporate Governance Guidelines to establish the corporate governance policies which provide a structure within which ourthe Board of Directors and management can effectively pursue Fortinet’s objectives for the benefit of our stockholders. Fortinet’s
The Corporate Governance Guidelines are available on Fortinet’s website atinvestor.fortinet.com/governance.cfm​corporate-governance.cfm.

Majority Voting Standard for Director Elections and Director Resignation Policy

Our Bylawsbylaws provide for a majority voting standard for uncontested elections of directors and require that stockholder director nominations include a written statement as to whether the nominee intends to tender his or heran irrevocable resignation upon his or hersuch nominee’s election or re-election. The majority voting standard provides that, in uncontested director elections, a director nominee will be elected only if the number of votes cast FOR the nominee exceeds the number of votes cast AGAINST the nominee. In addition, our Corporate Governance Guidelines address, among other provisions, the “holdover” director situation under the Delaware General Corporation Law (pursuant to which a director remains on the board of directors until his or hersuch director’s successor is elected and qualified), by requiring each incumbent nominee to submit an irrevocable contingent resignation letter.letter prior to the annual meeting of stockholders in which such election is to take place. Such resignation becomes effective only upon (x)(a) such nominee’s failure to receive the requisite number of votes for re-election at any future meeting at which such person would face re-election and (y) our(b) the Board of Directors’ acceptance of such resignation. If the nominee does not receive morethe requisite number of votes cast FOR his election than AGAINST his election, our Nominating and Corporatefor re-election, the Governance Committee will make a recommendation to ourthe Board of Directors as to whether to accept or reject the resignation, or whether other action should be taken. The Board of Directors will act on the Nominating and Corporate Governance Committee’s recommendation and publicly disclose its decision and the rationale behind it within 90 days from the date of the certification of the election results.

Director Independence

Our

The Board of Directors has determined that, with the exception of Messrs. Ken Xie and Michael Xie, who are employees of Fortinet, all of the current members of the Board of Directors and nominees for director are “independent directors” as that term is defined in NASDAQ’sNasdaq’s listing standards.

Board Meetings and Committees

During fiscal 2015,2017, the Board of Directors held six16 meetings. Each director attended at least 75% of the aggregate of all meetings of the Board of Directors and all meetings held by all committees of the Board of Directors on which he or shesuch director served during the past fiscal year. The Board of Directors has three standing committees: anthe Audit Committee, a Compensationthe Human Resources Committee and a Nominating and Corporatethe Governance Committee.

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Audit Committee

The Audit Committee which has been established in accordance with Section 3(a)(58)(A) of the Exchange Act, is currently comprised of Messrs. Hsieh and Paisley and Ms. Sim, each of whom is “independent” as such term is defined for audit committee members by the listing standards of NASDAQ.Nasdaq and the rules of the SEC. Mr. Paisley is the Chairman of the Audit Committee. The Board of Directors has determined that Mr. Paisley is an “audit committee financial expert”expert,” as defined in the rules of the SEC.


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The Audit Committee is responsible for, among other things:

•
selecting and hiring our independent auditors, and approving the audit and non-audit services to be performed by our independent auditors;
​
•
evaluating the qualifications, performance and independence of our independent auditors;
​
•
monitoring the integrity of our financial statements and our compliance with legal and regulatory requirements;
​
•
reviewing the adequacy and effectiveness of our internal control policies and procedures;
​
•
discussing the scope and results of the audit with the independent auditors and reviewing with management and the independent auditors our interim and year-end operating results;
​
•
preparing the Audit Committee Report that the SEC requires in our annual proxy statement; and
​
•
reviewing and overseeing related-person transactions.

​
The Audit Committee held nineeight meetings during fiscal 2015.2017. The Audit Committee has adopted a written charter approved by the Board of Directors, which is available on Fortinet’s website atinvestor.fortinet.com/governance.cfmcorporate-governance.cfm.

The Audit Committee Report is included in this proxy statement on page 4148.

Compensation

Human Resources Committee

Our Compensation

The Human Resources Committee is currently comprised of Messrs. Cohen, Hsieh, Neukom and Paisley, each of whom qualifies as an independent director under the listing standards of NASDAQ.Nasdaq. Mr. Neukom is currently the Chairman of ourthe Human Resources Committee. The Human Resources Committee was formerly known as the Compensation Committee.

Our CompensationCommittee and was renamed by the Board of Directors during fiscal 2017.

The Human Resources Committee is responsible for, among other things:

•
reviewing and approving for our executive officers: thetheir annual base salary, the annual incentive bonus, equity compensation and other benefits, compensation or arrangements;
​
•
reviewing and recommending compensation goals and objectives, and bonus and stock compensation criteria for our executive officers;
​
•
preparing the CompensationHuman Resources Committee Report that the SEC requires to be included in our annual proxy statement; and
​
•
administering our equity compensation plans.

​
See “Executive Compensation — Compensation Discussion and Analysis” and “Executive Compensation — Compensation of Directors” for a description of Fortinet’s processes and procedures for the consideration and determination of executive officer and director compensation.

The CompensationHuman Resources Committee held four meetings during fiscal 2015.2017. The CompensationHuman Resources Committee has adopted a written charter approved by the Board of Directors, which is available on Fortinet’s website atinvestor.fortinet.com/governance.cfmcorporate-governance.cfm.

The CompensationHuman Resources Committee Report is included in this proxy statement on page 2732.

Nominating and Corporate

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Governance Committee

Our Nominating and Corporate

The Governance committeeCommittee is currently comprised of Messrs. Hsieh,Cohen, Locke and Neukom and Ms. Sim, each of whom qualifies as an independent director under the listing standards of NASDAQ.Nasdaq. Mr. Locke is the Chairman of the Governance Committee. The Governance Committee was formerly known as the Nominating and Corporate Governance Committee.

Our NominatingCommittee and Corporatewas renamed by the Board of Directors during fiscal 2017.

The Governance Committee is responsible for, among other things:

•
assisting ourthe Board of Directors in identifying prospective director nominees and recommending nominees for each annual meeting of stockholders to the Board of Directors;
​
•
reviewing developments in corporate governance practices and developing and recommending corporate governance guidelines;
​
•

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overseeing the evaluation of ourthe Board of Directors; and
​
•
recommending members for each committee of ourthe Board of Directors.

​
The Nominating and Corporate Governance Committee will consider recommendations of candidates for the Board of Directors submitted by stockholders of Fortinet; see “Process for Recommending Candidates for Election to the Board of Directors” below.

The Nominating and Corporate Governance Committee held three meetings during fiscal 2015.2017. The Nominating and Corporate Governance Committee has adopted a written charter approved by the Board of Directors, which is available on Fortinet’s website atinvestor.fortinet.com/governance.cfmcorporate-governance.cfm.

Compensation

Human Resources Committee Interlocks and Insider Participation

Messrs. Cohen, Hsieh, Neukom and Paisley served as members of the CompensationHuman Resources Committee during fiscal 2015. In addition, Chenming Hu served as a member of the Compensation Committee during fiscal 2015 until our annual meeting in June 2015.2017. None of the members of our Compensationthe Human Resources Committee during fiscal 20152017 is or has in the past served as an officer or employee of our company. None of our executive officers currently serves, or in the past year has served, as a member of the board of directors or compensation committee of any entity that has one or more executive officers serving on ourthe Board of Directors or Compensationthe Human Resources Committee during fiscal 2015.

2017.

Board Leadership Structure

Our Corporate Governance Guidelines provide the Board of Directors with flexibility to select the appropriate leadership structure depending on what the Board of Directors determines is in the company’sFortinet’s best interests at a given time. In making leadership structure determinations, the Board of Directors considers many factors, including the specific needs of the business and what is in the best interests of our stockholders. A copy of our Corporate Governance Guidelines is available on our website atinvestor.fortinet.com/governance.cfmcorporate-governance.cfm.

Mr. PaisleyNeukom currently serves as our Lead Independent Director and Mr. Ken Xie serves as our Chairman and Chief Executive Officer. In addition to the duties of all members of the Board of Directors, Mr. Paisley’sNeukom’s principal responsibilities as theour Lead Independent Director of the Board of Directors are toto: preside over executive sessions of the Board of Directors,Directors; review and comment on the agenda for meetings of the Board of Directors in consultation with the Chairman and Chief Executive Officer and other members of the Board of Directors,Directors; act as principal liaison between the independent directors and the Chairman and Chief Executive Officer on sensitive issues,issues; raise issues with management on behalf of the independent directors when appropriateappropriate; and assess the quality, quantity and timeliness of the flow of information from management that is necessary for the independent directors to effectively and responsibly perform their duties.

Our

The Board of Directors believes that the current leadership structure provides an appropriate balance between strong leadership from our Chairman and Chief Executive Officer and oversight by independent directors. In particular, this structure capitalizes on the expertise and experience of Messrs. Ken Xie and PaisleyNeukom as it permits Mr. Xie to serve as a bridge between the Board of Directors and management,
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helping both to act with a common purpose, and providing critical leadership for carrying out our strategy and confronting challenges, while Mr. PaisleyNeukom ensures independence of the Board of Directors from management and as Lead Independent Director can call and chair meetings of the independent directors separate and apart from the Chairman. The Board of Directors also believes that there may be other advantages to having a Lead Independent Director for matters such as communications and relations between the Board of Directors, the Chief Executive Officer and the other members of our senior management, and in assisting the Board of Directors in reaching consensus on particular strategies and policies. Messrs. Ken Xie and Michael Xie, as the only two management directors, do not participate in sessions of non-management directors, and non-management directors meet regularly in executive session without management.


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Board’s Role in Risk Oversight

The Board of Directors oversees an enterprise-wide approach to risk management, designed to support the achievement of organizational objectives, including strategic objectives, to improve long-term organizational performance and to enhance stockholder value. A fundamental part of risk management is not only understanding the most significant risks a companythat Fortinet faces and what steps management is taking to manage those risks but also understanding what level of risk is appropriate for the company.Fortinet. The involvement of the full Board of Directors in reviewing Fortinet’s business is an integral aspect of its assessment of management’s tolerance for risk and also its determination of what constitutes an appropriate level of risk for Fortinet.

While the Board of Directors has the ultimate oversight responsibility for the risk management process, various committees of the Board of Directors also have responsibility for risk management. The charter of the Audit Committee provides that one of the Audit Committee’s responsibilities is oversight of certain compliance matters. In addition, in setting compensation, the CompensationHuman Resources Committee strives to create incentives that encourage a level of risk-taking consistent with Fortinet’s business strategy and to encourage a focus on building long-term value at Fortinet.

The Board also directly oversees certain strategic risks to Fortinet and other risk areas not delegated to one of its committees, including risks related to data privacy and cybersecurity.

At periodic meetings of the Board of Directors and its committees and in other meetings and discussions, management reports to and seeks guidance from the Board of Directors and its committees with respect to the most significant risks that could affect our business, such as legal risks and financial, tax and audit related risks. In addition, management provides the Audit Committee periodic reports on Fortinet’s compliance programs and efforts, investment policy and practices.

Process for Recommending Candidates for Election to the Board of Directors

The Nominating and Corporate Governance Committee is responsible for, among other things, determining the criteria for membership to the Board of Directors and recommending candidates for election to the Board of Directors. It is the policy of the Nominating and Corporate Governance Committee to consider recommendations for candidates to the Board of Directors from stockholders. Stockholder recommendations for candidates to the Board of Directors must be directed in writing to Fortinet, Inc., 899 Kifer Road, Sunnyvale, CA 94086, Attention: Corporate Secretary, and must include the candidate’s name, home and business contact information, detailed biographical data and qualifications, information regarding any relationships between the candidate and Fortinet within the last three years and evidence of the nominating person’s ownership of Fortinet’s common stock. Such recommendations must also include a statement from the recommending stockholder in support of the candidate, particularly within the context of the criteria for membership on the Board of Directors, including issues of character, judgment, diversity, including whether the person is a current or former CEOchief executive officer or CFOchief financial officer of a public company or the head of a division of a large international organization, independence, expertise, corporate experience, length of service, other commitments and the like, personal references and an indication of the candidate’s willingness to serve. There are no differences in the manner by which the Nominating and Corporate Governance Committee evaluates nominees for director based on whether the nominee is recommended by a stockholder or the Board of Directors.

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The Nominating and Corporate Governance Committee’s criteria and process for evaluating and identifying the candidates that it recommends to the full Board of Directors for selection as director nominees are as follows:

•
The Nominating and Corporate Governance Committee evaluates the current composition and organization of the Board of Directors.
​
•
The Nominating and Corporate Governance Committee recommends for approval by our Board of Directorsreviews on an annual basis the desired qualifications and characteristics for membership on the Board of Directors.
​
•
The Nominating and Corporate Governance Committee evaluates the performance of individual members of ourthe Board of Directors eligible for re-election and selects, or recommends for the selection of the Board of Directors, the director nominees by class for election to the Board of Directors by our stockholders at the annual meeting of stockholders.
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In its evaluation of director candidates, including the members of the Board of Directors eligible for re-election, the Nominating and Corporate Governance Committee seeks to achieve a balance of knowledge, experience and capability on the Board of Directors and considersconsiders: (1) the current composition and organization of the Board of Directors and the needs of the Board of Directors and the respective committees of the Board of Directors,its committees; (2) such factors as character, judgment, diversity, expertise, business experience, length of service, independence, other commitments and the like,like; and (3) such other factors as the Nominating and Corporate Governance Committee may consider appropriate. The Nominating and Corporate Governance Committee considers diversity of skills, experience, gender and race, among other factors, in evaluating candidates for the Board of Directors.
​
•
While the Nominating and Corporate Governance Committee has not established specific minimum qualifications for director candidates, the Nominating and Corporate Governance Committee believes that candidates and nominees must reflect a Board of Directors that is comprised of directors whowho: (1) are predominantly independent,independent; (2) are of high integrity,integrity; (3) have broad, business-related knowledge and experience at the policy-making level in business or technology, including their understanding of the networking security industry and Fortinet’s business in particular,particular; (4) have qualifications that will increase overall effectiveness of the Board of DirectorsDirectors; and (5) meet other requirements as may be required by applicable rules, such as financial literacy or financial expertise with respect to Audit Committee members.
​
•
With regard to candidates who are properly recommended by stockholders or by other means, the Nominating and Corporate Governance Committee will review the qualifications of any such candidate, which review may, in the Nominating and Corporate Governance Committee’s discretion, include interviewing references for the candidate, direct interviews with the candidate, or other actions that the Nominating and Corporate Governance Committee deems necessary or proper.
​
•
In evaluating and identifying candidates, the Nominating and Corporate Governance Committee has the authority to retain and terminate any third-party search firm that is used to identify director candidates and has the authority to approve the fees and retention terms of any search firm.
​
•
The Nominating and Corporate Governance Committee will apply these same principles when evaluating candidates for the Board of Directors who may be elected initially by the full Board of Directors to fill vacancies or add additional directors prior to the annual meeting of stockholders at which directors are elected.
​
•
After completing its review and evaluation of director candidates, the Nominating and Corporate Governance Committee recommends to the full Board of Directors the director nominees.

​
Attendance at Annual Meetings of Stockholders by the Board of Directors

Although Fortinet does not have a formal policy regarding attendance by members of the Board of Directors at Fortinet’s annual meeting of stockholders, Fortinet welcomes, but does not require, directors to attend. Ken Xie was the only director who attended Fortinet’s 20152017 Annual Meeting of the Stockholders (the “2015“2017 Annual Meeting”).

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Contacting the Board of Directors

Stockholders who wish to communicate with the members of ourthe Board of Directors may do so by sending a letter to Fortinet’s Corporate Secretary, a letter c/o Fortinet, atInc., 899 Kifer Road, Sunnyvale, CA 94086, or by fax to (408) 235-7737. The Corporate Secretary reviews all incoming stockholder communications (except for mass mailings, product complaints or inquiries, job inquiries, business solicitations and patently offensive or otherwise inappropriate material) and, if appropriate, routes such communications to the appropriate member(s) of ourthe Board of Directors, or if none is specified, to the Lead Independent Director.


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EXECUTIVE OFFICERS

The names of our executive officers, their ages, their positions with Fortinet and other biographical information, as set forth below, are as of March 31, 2016.2018. Messrs. Ken Xie and Michael Xie are brothers. There are no other family relationships among any of our directors or executive officers.

Name​​Age​​Position​
Ken Xie​53​55​​Chief Executive Officer and Chairman of the Board of Directors​
Michael Xie​47​49​​President, Chief Technology Officer and Director​
Andrew Del MattoKeith Jensen(1)​57​59​​Chief Financial Officer​
John Whittle​47​49​​Vice President of Corporate Development, General Counsel and Corporate Secretary​
​

(1)
Andrew Del Matto resigned as Fortinet’s Chief Financial Officer in February 2018. The Board of Directors appointed Mr. Jensen to serve as Chief Financial Officer effective May 2018.
​
Ken Xie.  Xie.For a brief biography of Mr. Ken Xie, please see “Proposal OneTwo — Election of Directors — Information Regarding the Board of Directors and Director Nominees.”

Michael Xie.  Xie.For a brief biography of Mr. Michael Xie, please see “Proposal OneTwo — Election of Directors — Information Regarding the Board of Directors and Director Nominees.”

Andrew Del Matto

Keith Jensen has served as our Chief Financial Officer since January 2014.May 2018, and has served as our Chief Accounting Officer since July 2015. Mr. Jensen served as our Interim Chief Financial Officer from February 2018 until May 2018. Prior to that, Mr. Jensen served as our Vice President of Finance and Corporate Controller from May 2014 to July 2015. From January 2005November 2012 to December 2013,May 2014, Mr. Del MattoJensen served in various positions at Symantec Corporation,DataDirect Networks, Inc., a data storage provider, including actingas its Chief Accounting Officer and Chief Administrative Officer. From February 2006 to November 2012, Mr. Jensen served in various positions at Sybase, Inc. (which was acquired by SAP America, Inc. in July 2010), an enterprise software and services company, including as Sybase’s Chief Financial Officer since October 2013 and its Senior Vice President and Chief Accounting Officer since April 2012. At Symantec,Officer. Prior to Sybase, from October 1999 to January 2006, Mr. Del Matto alsoJensen served as Corporate Treasurer and Vice PresidentChief Financial Officer of Finance Business Operations since September 2009 and priorDorado Network Systems Corporation, a provider of software solutions to that led the Corporate Financial Planning and Analysis and Revenue Operations teams. Prior to joining Symantec,financial service companies. Mr. Del Matto was employed by Inktomi Corporation and SGI Corporation in a variety of finance and accounting leadership roles.Jensen also previously held several positions with Coopers & Lybrand, including audit manager. Mr. Del Matto started his career with KPMG LLP as a certified public accountant. Mr. Del MattoJensen holds a B.S. in Business from OhioCalifornia State University, and an M.B.A. from Golden Gate University.

Sacramento.

John Whittle has served as our Vice President and General Counsel since October 2006, Corporate Secretary since January 2007 and Vice President of Corporate Development since October 2010. From March 2006 to October 2006, Mr. Whittle was Vice President and General Counsel for Ingres Corporation, an open source database company formed by a divestiture from Computer Associates. Prior to working at Ingres, from January 2000 to March 2005, Mr. Whittle was Vice President and General Counsel for Corio, Inc., an enterprise application services provider, through the acquisition of Corio by International Business Machines Corporation (“IBM”), a provider of integrated solutions that leverage information technology and business processes.provider. Mr. Whittle worked from March 2005 to March 2006 with IBMInternational Business Machines Corporation following its acquisition of Corio. Prior to joining Corio, Mr. Whittle was an attorney at the law firm of Wilson Sonsini Goodrich & Rosati, P.C. from 1996 to 2000, representing technology companies in general corporate matters and initial and follow-on public offerings. Mr. Whittle holds a B.A. degree in history from the University of Virginia and a J.D. from Cornell University Law School.


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EXECUTIVE COMPENSATION

Compensation Discussion and Analysis

The following

This compensation discussion and analysis provides information about the 20152017 compensation arrangements for each individual who served as one of our executive officers during 2015,2017, who were as follows:

•
Ken Xie, our Chief Executive Officer;
​
•
Michael Xie, our President and Chief Technology Officer;
​
•
Andrew Del Matto, our former Chief Financial Officer; and
​
•
John Whittle, our Vice President of Corporate Development, General Counsel and Corporate Secretary.

​
We refer to these individuals as “named executive officers” in this proxy statement. Because we had no other executive officers during 2017, each one of our executive officers was a named executive officer in 2017.
Mr. Del Matto resigned as Fortinet’s Chief Financial Officer in February 2018. The Board of Directors appointed Keith Jensen to serve as Chief Financial Officer effective May 2018.
This compensation discussion and analysis should be read together with the compensation tables and related disclosures that follow it. This discussion contains forward looking statements that are based on our current plans, considerations, expectations and determinations regarding future compensation programs. Actual compensation programs that we adopt may differ materially from currently planned programs as summarized in this discussion.

Overview

We compete with many other technology companies in seeking to attract and retain ahighly skilled workforce.top talent. We also seek to keep our employees highly motivated. To meet these challenges, we designed our executive compensation programsprogram to attract, retain and motivate our named executive officers to enhance stockholder value by:

•
offering base pay to our named executive officersand total compensation opportunities that isare competitive compared with market and peer company data for the technology industry;
offering total compensation opportunities for our named executive officers that are competitive compared with the opportunities offered by companies similar to us within the technology industry;​
•
linking named executive officer compensation to our operating, financial and stock price performance by making elements of each executive’snamed executive officer’s compensation dependent on our overall company performance and the creation of stockholder value;
​
•
emphasizing equity pay and long-term incentives for our named executive officers so they have incentivesin order to contributeincentivize contributions towards our growth and the creation of long-term value for our stockholders; and
​
•
ensuring fairness among our executive team by recognizing the contributions each named executive officer makes to our success.

​
Because our compensation programs areprogram is designed to align our executives’named executive officers’ compensation towith our operating, financial and stock price performance, you should consider our executive compensation decisions in the context of these areas of our performance during fiscal 2015, including:

2017. Specifically:
•
Total revenue for fiscal 20152017 was $1.01$1.49 billion, an increase of 31%approximately 17% compared to $770.4 million$1.28 billion for fiscal 2014;2016;
​
•
GAAP operating income for fiscal 20152017 was $14.9$109.8 million, an increase of approximately 156% compared to $59.3$42.9 million for fiscal 2014;2016; and
​
•
Our stock price as of December 31, 201529, 2017 was $31.17, an increase of approximately 1.7%$43.69, compared to $30.66$30.12 as of December 31, 2014.30, 2016.

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Role of the CompensationHuman Resources Committee in Executive Compensation Decisions

The CompensationHuman Resources Committee of ourthe Board of Directors has overall responsibility for approving the compensation of our named executive officers. Members of the CompensationHuman Resources Committee are appointed by ourthe Board of Directors. See “Corporate Governance — Board Meetings and Committees — CompensationHuman Resources Committee” for more detail about the responsibilities and procedures of the CompensationHuman Resources Committee.


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Role of Compensation Consultant

In determining executive compensation, the CompensationHuman Resources Committee of our Board of Directors has considered,considers, at least annually, ana competitive market analysis fromprepared by an independent third-party compensation consultant and reserves the right to consider analyses from more than one compensation consultant.

For fiscal 2015,2017, the CompensationHuman Resources Committee engaged Compensia, Inc. (“Compensia”) to provide a competitive market assessmentanalysis of Fortinet’s executive compensation program and to report on the results of such assessment. The compensation consultant has providedanalysis. This analysis, which is based on an assessment of market and peer company compensation data, asis one consideration forfactor considered by the CompensationHuman Resources Committee as discussed in more detail below under “— Determining the Amount of Elements of Executives’ Compensation in 20152017.” Based on consideration of the various factors set forth in the rules of the SEC rules and NASDAQNasdaq listing standards, the CompensationHuman Resources Committee does not believe that its relationship with Compensia and the work of Compensia on behalf of the CompensationHuman Resources Committee has raised any conflict of interest.

Role of Executives in Executive Compensation Decisions

Our Compensation

The Human Resources Committee generally seeks input from our Chief Executive Officer, Mr. Ken Xie, when discussing the performance of and compensation levels for our named executive officers other than for himself and Mr. Michael Xie. Neither Mr. Ken Xie nor any of our other named executive officers participates in deliberations relating to their own compensation, and Messrs. Ken Xie and Michael Xie do not participate in deliberations related to each other’s compensation.

Stockholder Advisory Vote on Named Executive Officer Compensation
Our stockholders will have the opportunity again at this year’s 2018 Annual Meeting to vote on our named executive officer compensation through the stockholder advisory vote on executive compensation (commonly known as a “say-on-pay” vote) included as Proposal ThreeFour in this proxy statement. At each of our past two annual meetings of stockholders, over 98%95% of the stockholder votes cast were cast in favor of our named executive officer compensation. The CompensationHuman Resources Committee considers input from our stockholders and the outcome of our annual say-on-pay votes when making future executive compensation decisions and, to the extent there is any significant vote against the named executive officer compensation as disclosed in this proxy statement, the CompensationHuman Resources Committee will seek to understand and consider our stockholders’ concerns and will evaluate whether any actions are appropriate to address those concerns. Since the 20152017 stockholder vote on executive compensation occurred after the CompensationHuman Resources Committee had established all of the compensation elements for 2015, our Compensation2017, the Human Resources Committee wouldcould only take into consideration last year’sthe 2017 stockholder vote in establishing executive compensation in 2016.for 2018. We encourage you to review this“Executive Compensation”Compensation” section, together with the compensation tables that follow, prior to casting your advisory vote on the “say-on-pay” proposal.

Elements of Our Compensation Program

The four key elements of our compensation packageprogram for our named executive officers are base pay, equity-based awards, variable pay and our benefits programs. As a total package, we design our compensation program to enable us to attract and retain talent who add towe believe will enhance Fortinet’s long-term value. The individual elements of Fortinet’s compensation program are designed to satisfy this larger goal in specific ways as described below. For a detailed discussion of the amounts awarded to our named executive officers during 2015,2017, see “— Determining the Amount of Elements of Executives’ Compensation in 20152017” below.

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Base Pay.We establish base pay that is both reasonable and competitive in relation to the surveyedcompetitive market of similar companies in the technology industry. We monitorThe Human Resources Committee monitors competitive base pay levels at least annually and make adjustments to base pay as appropriate. In general, a named executive officer’s base pay level should reflect that individual’s overall sustained performance and contribution over time. We designThe Human Resources Committee sets base pay to provide the ongoing reward for each named executive officer’s work and contribution and to be competitive in attracting or retaining the executive. Any increases in base pay are provided generally on an annual basis.

Equity-Based Awards.  

Variable Pay.   Rewarding performance through variable pay is an important element of named executive officer compensation. We design our equity programsvariable pay program to be both reasonable and competitive in relation to the market. StockThe Human Resources Committee considers adjusting our variable pay program as appropriate for our named executive officers. Our senior management incentive bonus program is designed to motivate our named executive officers to achieve business goals and to align payouts with actual results. The variable pay incentives are based on a formulaic assessment of our financial performance and an assessment of each individual’s performance. A factor in this evaluation is our executive “peer review” process, in which our broader executive team reviews the performance of the other members of the team, including certain of the named executive officers, on a quarterly basis, and their confidential feedback is reviewed by the Human Resources Committee when considering individual variable pay incentives. We believe the executive peer review motivates executive officers to work together in a productive fashion. The Human Resources Committee has the discretion to increase or decrease a payout under our variable pay program at any time in the event that it determines that circumstances warrant adjustment.
Equity-Based Awards.   The Human Resources Committee designs our equity-based awards to be both reasonable and competitive in relation to the market. Our equity-based awards have historically consisted of stock options, restricted stock units (“RSUs”), which represent a right to receive shares of our common stock upon vesting over time, and performance stock units (“PSUs”), which are similar to RSUs but for which payout is based on the satisfaction of performance criteria that are determined by our Compensation

the Human Resources Committee.

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Committee, which are designed to reflect and reward sustained performance over time, as reflected in improved overall company value. As described in more detail below, we design our equity-based compensationawards to help retain talent over a period of time and to provide our named executive officers with a long-term reward that aligns their interests with those of our stockholders. AThe Human Resources Committee considers a number of factors are considered when determining the size of equity grants,awards, including peer groupcompetitive market data, named executive officer performance, the proposed award’s retention value, the value of unvested equity awards already held by the named executive officer and a review of the named executive officer’s overall compensation package, which takes into account our approach to base pay and variable pay. Initial grantsequity awards granted upon hire are generally designed to attract experienced executives with established records of success and help retain them over the long term. Subsequent grants to named executive officersequity awards are designed to help retain and incentivize our named executive officers.

The CompensationHuman Resources Committee granted refreshapproved “refresh” awards of stock options and RSUs and PSUs to our named executive officers in January 2015.2017. In recent years prior to 2017, the Human Resources Committee granted RSUs and PSUs to our named executive officers. The Compensation Committee grantsHuman Resources Committee’s decision in 2017 to grant stock options rather than PSUs in orderwas made primarily to create a stronger and more visiblefurther strengthen the link between executive pay and the company’s stock price performance; to further align our executives’ interests with those of our stockholders; to mitigate the impact of the volatility of the broader stock market on our equity programs; to better incentivize and retain our senior executives; and to move to a long-term incentive program that is more consistent with practices at peer companies. The PSUs granted in 2015 vest up to 50% at the end of a two-year service period ending in February 2017, and up to the remaining 50%, plus any unvested shares from the two-year period, at the end of a three-year service period ending in February 2018, based on the company’s relative stock price performance over those respective periods compared(as the value of a stock option is limited to the performanceexcess of then-current stock price over the NASDAQ Composite Index, with the “Award Multiplier” below applied to the amount of the original grant to vest:

Fortinet Stock Price Performance Relative to NASDAQ Composite IndexAward Multiplier
+25% points or greater150% 
+12.5% points125% 
0% points100% 
-16.7% points50% 
-33.3% points or less0% 

Stock price performance is measured using the average shareexercise price of the applicableoption), and to grant equity-based awards with a longer-term perspective (as our stock during the final 90 trading days of the two- oroptions vest over four years and can be exercised for up to seven years after grant, while our PSUs vest over a three-year performance period divided by the average share price during the 90 trading days ending on the trading day prior to the first day of the two- or three-year performance period, including the value attributable to reinvestment of dividends, if any. period).

The CompensationHuman Resources Committee believes that stock options, RSUs and PSUs serve to align executive pay with stockholder value because the ultimate compensation opportunity correlates with the company’sFortinet’s stock price over an extended period of time and, in the case of the PSUs, with Fortinet’s performance compared to that of the broader stock market, as represented by the NASDAQ Composite Index.

The Human Resources Committee grants stock options and RSUs (and, in prior years, has granted PSUs) in order to: create a stronger and more visible link between executive pay and Fortinet’s stock price performance; further align our executives’ interests with those of our stockholders; to better incentivize and retain our senior executives; and maintain a long-term incentive program that is competitive with practices at peer companies.

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Information on the vesting schedules for the awards of stock options and RSUs made to our named executive officers in 2017 can be found below in “— Determining the Amount of Elements of Executives’ Compensation in 2017 — Equity-Based Awards.” See “— Outstanding Equity Awards at 2017 Fiscal Year-End Table” for additional information regarding the outstanding and unvested equity awards held by each named executive officer as of the end of fiscal 2017.
Although the CompensationHuman Resources Committee has decided to grant only stock options and RSUs and PSUs based on the structure above,in 2017, it retains the ability tomay change its approach to equity grants as athe form of long-termfuture equity incentiveawards at its discretion.

Variable Pay.  Rewarding performance through variable pay is an important element of named executive officer compensation. We design our variable pay programs to be both reasonable and competitive in relation to the market. We consider adjusting our variable pay programs as appropriate for our named executive officers. Our senior management incentive bonus program is designed to motivate our named executive officers to achieve goals and to align payouts with actual results. The variable pay incentives are based on a formulaic assessment of our financial performance and an assessment of each individual’s performance. The Compensation Committee has the discretion to increase or decrease a payout under the variable pay programs at any time in the event that it determines that circumstances warrant adjustment. A key factor in this evaluation is our executive “peer review” process, in which our broader executive team reviews the performance of certain other executives, including certain named executive officers, on a quarterly basis, and their confidential feedback is reviewed by our Compensation Committee when considering individual variable pay incentives. We believe the executive peer review motivates executive officers to work together in a productive fashion.


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Benefits Programs.We provide our named executive officers the following benefits: employee retirement; health and welfare benefits, such asincluding participation in our 401(k) retirement plan; participation in our 2011 Employee Stock Purchase Plan (the “Employee Stock Purchase Plan”); group health insurance plans; and life, disability and accidental death insurance plans. Our named executive officers generally receive the same benefits as those provided to our other U.S. employees and do not receive any additional perquisites. OurWe design our employee benefits programs are typically establishedto be both cost-effective and adjusted bycompetitive in relation to the market as well as compliant with applicable laws and practices. We adjust our human resources department with approval,benefits programs as necessary, from senior managementneeded based upon regular monitoring of applicable laws and are consistent withpractices and the competitive practices of companies similar to us.

overall market.

Determining the Amount of Elements of Executives’ Compensation in 2015

2017

Overview.In analyzing elements of our compensation program in 2015,2017, the CompensationHuman Resources Committee engaged Compensia to provide an assessment of the compensation we offer to our named executive officers. The CompensationHuman Resources Committee also engaged Compensia for the limited purpose of gaining access to the compensation data that Compensia compiles for use in setting compensation for employees other than our named executive officers. With respect to Compensia’s engagement in 2015,2017, Compensia considered the compensation practices of the technology companies listed below, each of which had annual revenuesrevenue ranging from approximately $288$500 million to $847 million,$1.7 billion and market capitalizationcapitalizations generally ranging from $2.0$2.2 billion to $6.5 billion, and between 669 and 5,735 employees.

$14.7 billion.
​
3D Systems CorporationFireEye, Inc.
ANSYS, Inc.​Informatica Corporation​
ArubaPalo Alto Networks, Inc.IPG Photonics Corporation​
​Aspen Technology, Inc.​NetSuite​ServiceNow, Inc.​
​Check Point Software Technologies Ltd.​Palo Alto Networks,​Splunk Inc.​
CommVault​CoStar Group, Inc.​​SS&C Technologies Holdings, Inc.​
​FactSet Research Systems Inc.​Solera Holdings​Tableau Software, Inc.​
Concur Technologies, Inc.​Fair Isaac Corporation​​The Ultimate Software Group, Inc.​
CoStar Group​FireEye, Inc.​​Tyler Technologies, Inc.​
​IPG Photonics Corporation​​Verint Systems Inc.​
FactSet Research Systems​j2 Global, Inc.​​VeriSign, Inc.​
​NetSuite Inc.​​
For 2017, the Human Resources Committee removed Solera Holdings, Inc. from the peer group, which was acquired in 2016. The Human Resources Committee added the following companies to the peer group for 2017: Check Point Software Technologies Ltd., Fair Isaac Corporation, j2 Global, Inc. and SS&C Technologies Holdings, Inc.

Base Pay.As part of our annual performance review process and review of named executive officers’ compensation, early each year the CompensationHuman Resources Committee assesses the performance of the named executive officers, considering factors such as company performance, department performance and individual performance, including the named executive officer’s expertise, position, past contributions to Fortinet and potential future contributions to Fortinet. Largely as a result of this assessment and taking into account reasonable annual base pay increase practices and Compensia’s data and analysis, the CompensationHuman Resources Committee considered whether and how much to adjust the base pay of the named executive officers.

Taking into consideration performance and reasonable merit increases, in January 2015,2017, the CompensationHuman Resources Committee raised the annual base pay of Mr. Ken Xie by 12.6%3% to $425,000,$450,882, Mr. Michael Xie by 12%3% to $375,000,$397,838, Mr. Del Matto by 3% to $391,400$415,237 and Mr. Whittle by 5%3% to $344,532.$365,514. After these increases, salary for our named executive officers was generally positioned around the base pay50th percentile of the competitive market, with the exception of Mr. Ken Xie, whose salary was below Compensia’sthe 25th percentile of market data, Mr. Michael Xie’s was at Compensia’s 75th percentile of market data, Mr. Del Matto’s was near Compensia’s 55th percentile of market data and Mr. Whittle’s was near Compensia’s 40th percentile of market data.

the competitive market.

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Equity-Based Awards.In granting RSUsstock options and PSUsRSUs to our named executive officers in 2015,2017, the CompensationHuman Resources Committee exercised its judgment and considered, among other things, the role and contribution of the named executive officer, and the value of unvested stock options, RSUs and PSUs already held by the executive.

executive and Compensia’s data and analysis.

In January 2015,2017, the CompensationHuman Resources Committee approved refresh“refresh” awards of stock options exercisable for up to 100,000 shares for Mr. Ken Xie, 60,000 shares for Mr. Michael Xie, 40,000 shares for Mr. Del Matto and 30,000 shares for Mr. Whittle. Each of these stock options was granted in accordance with Fortinet’s Equity Award Grant Policy discussed in “— Timing of Equity Awards” below, and vests over four years, with 25% vesting one year from February 16, 2017 and the remainder vesting monthly thereafter.
Also in January 2017, the Human Resources Committee approved “refresh” awards of 50,000 RSUs for Mr. Ken Xie, 40,000 RSUs for each of Mr. Ken Xie and Mr. Michael Xie, 40,000 RSUs for Mr. Del Matto and 30,000 RSUs for each of Mr. Del Matto and Mr. Whittle. Each of these RSUs was granted in accordance with Fortinet’s Equity Award Grant Policy discussed in “— Timing of Equity Awards” below, and vests over four years, with 25% vesting approximately one year from the date of grantFebruary 16, 2017 and the remainder vesting quarterly thereafter.


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Also in January 2015, the Compensation Committee approved refresh awards of 40,000 PSUs for Mr. Ken Xie, 30,000 PSUs for Mr. Michael Xie and 20,000 PSUs for each of Mr. Del Matto and Mr. Whittle. Each of these PSUs vests 50% at the end of a two-year service period and up to the remaining 50%, plus any unvested from the two-year period, at the end of a three-year service period with a multiplier based on Fortinet’s relative stock price performance over those respective periods compared to the performance of the NASDAQ Composite Index, as described in more detail under“— Elements of Our Compensation Program — Equity Based Awards” above.

Variable Pay.We determine the executive’s actual level of variable compensation in accordance with the terms of the variable pay programs.Senior Management Bonus Program (the “Bonus Program”) approved by the Human Resources Committee for the year. In developing the framework, we seek to set total cash compensation (base(i.e. base salary plus variable pay) to meet our goal of ensuring that our cash compensation levels are competitive and to enable us to retain and motivate our named executive officers.

In 2015, our variable pay programs for named executive officers fell under2017, the Fortinet, Inc. Bonus Plan (the “Bonus Program”), with the Compensation Committee establishing, each year, a more detailed incentive bonus program within the parameters of our Bonus Program. In 2015, the CompensationHuman Resources Committee based the Bonus Program funding on achievement of revenue and operating income targets, as set forth in more detail below, with 75%60% of the bonus pool funding based on revenue achievement and 25%40% based on operating income achievement. We weightThe Human Resources Committee weighted the Bonus Program funding more heavily toward achieving revenue over operating income targets because we believeit believed that, at this stage, a continued focus on growing revenues willrevenue would help drive our long-term success and result in greater opportunity for profit in the future and enhanced stockholder value. WeHowever, because we believe it is important for our executives to monitor expenses closely as well, so wethe Human Resources Committee also basebased a portion of the bonus pool funding on theour operating income target.performance. Operating income for purposes of the Bonus Program is not calculated in accordance with U.S. generally accepted accounting principles and(“GAAP”) but rather is defined as net income plus income taxes, stock-based compensation, interest income and foreign exchange currency gains or losses.

Alosses and other adjustments to GAAP income as defined in our non-GAAP definition for external reporting purposes.

For purposes of the Bonus Program, a minimum performance level (based on a percentage of the revenue and operating income target mustlevels) had to be met before funding cancould occur. For 2015,2017, with respect to Messrs. Ken Xie and Michael Xie, this threshold (i.e. the minimum percentageminimum) performance level was 95% of both the revenue target and the operating income target was 95%.target. Once the threshold performance target is realized,level was attained, the funding of the bonus payments for Messrs. Ken Xie and Michael Xie increaseswas to increase on a graduated basis for each of the revenue portion and the operating income portion as follows:

Revenue
Performance		​​Funding Amount​
95% – 100%​​70% funding of the revenue-based portion for performance at 95% and
6% funding for every additional 1% of performance between 95% and 100%		​
100% – 150%​​0.8% funding for every additional 1% of performance between 100% and 150%​

Operating Income
Performance		​​Funding Amount​
95% – 100%​​70% funding of the operating income-based portion for performance at 95% and
6% funding for every additional 1% of performance between 95% and 100%		​
100% – 150%​​0.8% funding for every additional 1% of performance between 100% and 150%​

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For example, for the revenue portion for Messrs. Ken Xie and Michael Xie:

•
Below 95% achievement of the revenue target, the revenue portion of the Bonus Program would be funded at 0%,;
​
•
at 95% achievement of the revenue target, the revenue portion of the Bonus Program would be funded at 70%,;
​
•
at 100% achievement of the revenue target, the revenue portion of the Bonus Program would be funded at 100%,; and
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•
above 150% achievement of the revenue target, the revenue portion of the Bonus Program would be funded at 140%.
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For 2015,2017, with respect to Messrs. Del Matto and Whittle, the minimum percentage ofthreshold performance level for the revenue target was 90% and the minimum percentage ofthreshold performance level for the operating income target was 85%. Once the threshold performance target is realized,level was attained, the funding of the bonus payments for Messrs. Del Matto and Whittle increases on a graduated basis for each of the revenue portion and the operating income portion as follows:

Revenue
Performance		​​Funding Amount​
90% – 100%​​40% funding of the revenue-based portion for performance at 90% and
6% funding for every additional 1% of performance between 90% and 100%		​
100% – 150%​​0.8% funding for every additional 1% of performance between 100% and 150%​

Operating Income
Performance		​​Funding Amount​
85% – 90%​​8% funding of the operating income-based portion for every additional 1% of performance over 85%​
90% – 100%​​6% funding for every additional 1% of performance between 90% and 100%​
100% – 150%​​0.8% funding for every additional 1% of performance between 100% and 150%​

For example, for the revenue portion for Messrs. Del Matto and Whittle:

•
Below 90% achievement of the revenue target, the revenue portion of the Bonus Program would be funded at 0%,;
​
•
at 90% achievement of the revenue target, the revenue portion of the Bonus Program would be funded at 40%,;
​
•
at 95% achievement of the revenue target, the revenue portion of the Bonus Program would be funded at 70%,;
​
•
at 100% achievement of the revenue target, the revenue portion of the Bonus Program would be funded at 100%,; and
​
•
above 150% achievement of the revenue target, the revenue portion of the Bonus Program would be funded at 140%.

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Bonuses arepayments were calculated and awarded quarterly. Bonus payments were based on unaudited, preliminary revenue and operating income results. Adjustments based on actual revenue and operating income results may be made in subsequent quarters at the Human Resources Committee’s discretion.
Individual target bonuses under the Bonus Program are expressed as a percentage of the named executive officer’s base salary for 100% goal achievement. During 2015,2017, our chief executive officerChief Executive Officer made bonus recommendations for target bonuses to the CompensationHuman Resources Committee for Messrs. Del Matto and Whittle, taking into consideration company achievement versus the financial targets discussed below and peer reviewgroup data. The CompensationHuman Resources Committee in turn gave final approval after discussing the recommendations. The CompensationHuman Resources Committee approved target bonuses for Messrs. Ken Xie and Michael Xie based upon the same criteria under the Bonus Program. The compensation framework of variable pay for our named executive officers was approximately based on a market 50th percentile target.

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For 2015,2017, the CompensationHuman Resources Committee approved bonus targetstarget bonuses of 100% of base salary for Mr. Ken Xie, 50% of base salary for Mr. Michael Xie, 65% of base salary for Mr. Del Matto and 50%60% of base salary for Messrs. Michael Xie andMr. Whittle. In addition, for 2015, Mr. Whittle was eligible for up to an additional 10% bonus for his strategic alliances and corporate development responsibilities. See “— 2015 Summary Compensation Table” below.


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As noted above, the Bonus Program iswas based on internal revenue and operating income performance targets set at the beginning of the year. The targets were set at levels determined to be challenging and requiring substantial effort on the part of senior management. For 2015,2017, we achieved between 97% and 137%98% of our quarterly and annual revenue targets and we achieved between 99% and 119% of our quarterly and annual operating income targets and we achieved between 100% and 104% of our quarterly and annual revenue targets. We paid bonuses toThe Human Resources Committee approved bonus payments for our senior management for 20152017 based on achievement of these corporate goals and the peer reviewsindividual performance of certain of our named executive officers as discussedevaluated pursuant to the “peer review” process described above. The following charts below set forth both the target levels for our internal revenue and operating income performance, targets compared to the revenue and operating income levels actually achieved, and indicates the percentages of target revenue actually achieved.

[GRAPHIC MISSING]

[GRAPHIC MISSING]

Note:Bonus calculations are based on unaudited/preliminary revenue and operating income results.

[MISSING IMAGE: tv492684_chrt-bar1.jpg]
[MISSING IMAGE: tv492684_chrt-bar2.jpg]
Benefits Programs.In 2015,2017, our named executive officers received the same employee benefits as our other U.S.-based employees. We design our employee benefits programs to be both cost-effectiveemployees and competitive in relation to the market as well as compliant with applicable laws and practices. We adjustdid not receive any additional perquisites. Additional details regarding our benefits programs as needed based upon regular monitoringcan be found above in “— Elements of applicable laws and practices and the overall market.

Our Compensation Program — Benefits Programs.”

Severance and Change of Control Agreements

In February 2016, we entered into Amended and Restated Change of Control Severance Agreements with each of Messrs. Ken Xie, Michael Xie and Whittle, and with Mr. Del Matto, and Whittle.then our Chief Financial Officer. The amendments were entered into to clarify the prior Change of Control Severance Agreements
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and did not reflectmake any substantive changes. The Amended and Restated Change of Control Severance Agreementschanges to the prior agreements. These agreements provide for payments and benefits upon termination of


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their employment in specified circumstances. These arrangements (including potential payments and terms) are discussed in more detail in the “— Potential Payments Upon Termination or Change of Control” section below. We believe that these severance agreements help us from a retention standpoint, and they are particularly necessary in an industry such as ours, where there has been market consolidation. We believe that entering into these agreements helps the named executive officers maintain continued focus and dedication to their assigned duties to maximize stockholder value. The terms of these agreements were determined after review by the CompensationHuman Resources Committee of our retention goals for each named executive officer, as well as analysis of market data, similar agreements established by our peer group and applicable law.

Timing of Equity Awards

The CompensationHuman Resources Committee grantedapproved grants of both refresh“refresh” stock options and RSUs and refresh PSUs to executivesour named executive officers in January 2015.2017. The Board of Directors and CompensationHuman Resources Committee reserve the right, however, to grant refreshstock options, RSUs, and PSUs or other equity awards at other times during the year, and to grant more or fewer than two refresh grants per year. With respect to newly hired employees, our practice is typically to make stock grantsgrant equity awards at the first quarterly meeting of the CompensationHuman Resources Committee following such employee’s hire date.

Pursuant to our Equity Award Grant Policy, equity awards are granted effective as of the date that is the tenth trading day on the NASDAQ Global MarketNasdaq following the date of our next quarterly earnings announcement following the meetings of our Compensationthe Human Resources Committee or the Board of Directors when such equity awards were approved.

Performance-Based Compensation Recovery Policy

The CompensationHuman Resources Committee has adopted a compensation recovery policy that allows us to recover or “clawback” performance-based cash compensation from certain employees who participate in the Bonus Program in the event of a material restatement of our financial results. Under the policy, if the material restatement would result in any performance-based cash compensation paid under the Bonus Program during the three years preceding the restatement to have been lower had it been calculated based on such restated results, we may recover the amounts in excess of what would have been paid under the restatement from any participant who received such performance-based cash compensation and who is determined to have engaged in intentional or unlawful misconduct that materially contributed to the need for such restatement. OurThe Board of Directors (or a committee designated by the Board of Directors) has the sole authority to enforce this policy, and it is limited by applicable law.

Effect of Accounting and Tax Treatment on Compensation Decisions

In the review and establishment of our compensation programs,program, we consider the anticipated accounting and tax implications to us and our executives. In this regard, we usehave historically used stock options, RSUs and PSUs, and we reserve the right to use other forms of equity, as additional forms of equity compensation incentives in response to changes in the accounting treatment of equity awards and taking into consideration potential impact on dilution and competitive practices. While we considerthe Human Resources Committee considers the applicable accounting and tax treatment, these factors alone are not determinative, and wethe Human Resources Committee also considerconsiders the cash and non-cash impact of the programs and whether a program is consistent with our overall compensation philosophy and objectives.

In 2017, Section 162(m) of the Internal Revenue Code of 1986, as amended (“Code”(the “Code”) imposes limits, imposed a $1 million limit on the amount of compensation that a public company may deduct in any one year for the compensation of theits chief executive officer and certain other highly compensated executive officers, unless specific and detailed criteria are satisfied. Performance-basedsatisfied to qualify such compensation (including stock options), as defined“performance-based compensation” under Section 162(m). While the Human Resources Committee considered the deductibility of awards as one factor in determining executive compensation in 2017, the Code, is fully deductible ifHuman Resources Committee also looked at other factors in making its decisions and retains the programs are approved by stockholdersflexibility to award compensation that it determines to be consistent with our overall compensation objectives. For this and meet other requirements. We have determined that we willreasons, the Human Resources Committee did not seek tonecessarily limit executive compensation so that it isto the amount deductible under Section 162(m). However,Additionally, the Human Resources Committee may modify compensation that was initially intended to be exempt from time to time, we may choose to structure our compensation programs to satisfy the requirements of Section 162(m). We seek to maintain flexibility in designing a comprehensive plan for our executives if it determinates that promotessuch modifications are consistent with our corporate goals and therefore our Compensation Committee has not adopted a policy requiring all compensation to be deductible. To that end, our Board of Directors previously adopted, and our stockholders previously approved, the Fortinet, Inc. Cash and Equity Incentive Plan to permit cash bonuses and certain equity compensation to be considered “performance-based compensation” within the meaning of Section 162(m) of the Code and therefore fully deductible by us for federal income tax purposes.

goals.

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​Compensation

The Tax Cuts and Jobs Act, which was signed into law in December 2017, eliminated the “performance-based compensation” exemption to the Section 162(m) deductibility limit, effective for tax years beginning after December 31, 2017. As a result, any compensation paid to such executive officers in excess of  $1 million will be non-deductible unless such compensation is payable pursuant to a written binding contract that was in effect on November 2, 2017. We believe it is likely that compensation expense incurred upon the exercise of stock options and settlement of PSUs granted prior to November 2, 2017 will continue to be deductible in future years. However, because the tax reform changes are complex and their effect is unsettled, we can offer no such assurance of deductibility. All other compensation paid to such executive officers in excess of  $1 million, including cash compensation, stock options, RSUs and PSUs paid or granted after December 31, 2017, will likely be non-deductible in future years.
Human Resources Committee Report

The CompensationHuman Resources Committee oversees our compensation policies, plans and benefit programs. The CompensationHuman Resources Committee has reviewed and discussed the Compensation Discussion and Analysis required by Item 402(b) of Regulation S-K with management. Based on such review and discussions, the CompensationHuman Resources Committee has recommended to the Board of Directors that the Compensation Discussion and Analysis be included in this proxy statement.

Respectfully submitted by the members of the CompensationHuman Resources Committee of the Board of Directors

William H. Neukom (Chairman)
Peter D. Cohen
Ming Hsieh
Christopher B. Paisley

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2017 Summary Compensation Table

The following table presents information concerning the compensation of the named executive officers for fiscal 2015, 2014the years ended December 31, 2017, 2016 and 2013.

2015.
Name and Principal Position​​Year​​Salary
($)		​​Bonus
($)		​​
Option
Awards
($)(1)
​​
Stock
Awards
($)(1)(2)
​​
Non-Equity
Incentive Plan
Compensation
($)(3)
​​
All Other
Compensation
($)(4)
​​Total
($)		​
Ken Xie
Chief Executive Officer
​​​​2017​​​​​450,882​​​​​—​​​​​1,221,810​​​​​1,862,000​​​​​425,746​​​​​—​​​​​3,960,438​​
​​​2016​​​​​437,750​​​​​—​​​​​520,806​​​​​953,200​​​​​301,689​​​​​—​​​​​2,213,445​​
​​​2015​​​​​425,000​​​​​—​​​​​—​​​​​2,788,200​​​​​435,385​​​​​—​​​​​3,648,585​​
Michael Xie
President and Chief Technology Officer
​​​​2017​​​​​397,838​​​​​—​​​​​733,086​​​​​1,489,600​​​​​187,829​​​​​—​​​​​2,808,353​​
​​​2016​​​​​386,250​​​​​—​​​​​390,605​​​​​953,200​​​​​133,138​​​​​—​​​​​1,863,193​​
​​​2015​​​​​375,000​​​​​—​​​​​—​​​​​2,411,500​​​​​192,081​​​​​—​​​​​2,978,581​​
Andrew Del Matto
Chief Financial Officer
​​​​2017​​​​​415,237​​​​​—​​​​​488,724​​​​​1,489,600​​​​​248,882​​​​​5,400​​​​​2,647,843​​
​​​2016​​​​​403,143​​​​​—​​​​​260,403​​​​​714,900​​​​​206,555​​​​​5,200​​​​​1,590,201​​
​​​2015​​​​​391,400​​​​​—​​​​​—​​​​​1,716,950​​​​​256,658​​​​​5,200​​​​​2,370,208​​
John Whittle
Vice President of
Corporate Development,
General Counsel and
Corporate Secretary
​​​​2017​​​​​365,514​​​​​—​​​​​366,543​​​​​1,117,200​​​​​216,230​​​​​4,619​​​​​2,070,106​​
​​​2016​​​​​354,868​​​​​30,534(5)​​​​​260,403​​​​​714,900​​​​​139,552​​​​​4,758​​​​​1,505,015​​
​​​2015​​​​​344,532​​​​​28,982(5)​​​​​—​​​​​1,716,950​​​​​180,500​​​​​4,843​​​​​2,275,807​​
Name and Principal PositionYearSalaryBonus
($)		Option
Awards
($)(1)		Stock
Awards
($)(1)(2)		Non-Equity
Incentive Plan
Compensation
($)(3)		All Other
Compensation
($)(4)		Total
($)
Ken Xie
Chief Executive Officer		2015425,000——2,788,200435,385—3,648,585
2014406,372(5)——1,700,200368,081—2,474,653
2013359,375——2,016,650138,045—2,514,070
Michael Xie
President and Chief Technology Officer		2015375,000——2,411,500192,081—2,978,581
2014360,490(5)——1,489,750114,055—1,964,295
2013318,800——1,704,50061,230—2,084,530
Andrew Del Matto(6)
Chief Financial Officer		2015391,400——1,716,950256,6585,2002,370,208
2014381,401(5)50,000(7)—3,136,075220,6535,2003,793,329
John Whittle
Vice President of Corporate Development, General Counsel and Corporate Secretary		2015344,532——1,716,950202,0744,8432,268,399
2014332,695(5)——1,384,525190,7084,4551,912,383
2013308,158——1,477,65099,5204,4711,889,799
​

(1)The amounts shown represent the aggregate grant date fair value of equity awards granted in the years shown, computed in accordance with Financial Accounting Standards Board Accounting Standards Codification Topic 718 (Compensation — Stock Compensation) (“FASB ASC Topic 718”). The assumptions used in the valuation of these awards are set forth in note 11 to our consolidated financial statements, which are included in our Annual Report on Form 10-K for the year ended December 31, 2015, filed with the SEC on February 26, 2016. Grant date fair value is determined for financial statement reporting purposes and does not correspond to the actual value that the named executive officers will receive from the awards.
(2)The amounts shown represent the aggregate grant date fair value of RSUs and PSUs granted to the named executive officers. The fair value of the PSUs was calculated using the Monte Carlo simulation model on the date of grant and based on the market price of our common stock on the date of grant modified to reflect the impact of the market-based vesting condition, including the estimated payout level based on that condition. See“— Grants of Plan-Based Awards in 2015” and“— Elements of Our Compensation Program — Equity Based Awards” for additional details regarding the RSUs and PSUs granted to named executive officers in fiscal 2015.
(3)See “— Grants of Plan-Based Awards in 2015” under the column “Estimated Future Payouts Under Non-Equity Incentive Plan Awards” for the amounts named executive officers were eligible to earn in fiscal 2015. See also “— Determining the Amount of Elements of Executives’ Compensation — Variable Pay” above for a discussion regarding our Bonus Program.
(4)Represents company matching contributions to Fortinet’s tax-qualified defined contribution plan (the 401(k) plan).
(1)
The amounts shown represent the aggregate grant date fair value of equity awards granted in the years shown, computed in accordance with Financial Accounting Standards Board Accounting Standards Codification Topic 718 (“FASB ASC Topic 718”). The assumptions used in the valuation of these awards are set forth in note 11 to our consolidated financial statements, which are included in our Annual Report on Form 10-K for the year ended December 31, 2017, filed with the SEC on February 26, 2018. The grant date fair value of these awards is determined for financial statement reporting purposes and does not correspond to the actual value that the named executive officers will receive from the awards.

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(5)Includes a one-time cash payment of $29,027, $25,749, $2,841, and $4,570 to Messrs. Ken Xie, Michael Xie, Del Matto, and Whittle, respectively, for accrued but unused paid time off as of December 31, 2014 due to a change in our policy applicable to U.S. employees regarding paid time off. In accordance with this policy, as of 2015, we no longer accrue paid time off for our U.S. employees, including our named executive officers.
(6)Mr. Del Matto was not an executive officer in fiscal 2013.
(7)Represents a signing bonus of $50,000 which was subject to Mr. Del Matto’s completion of two years of employment with us.

​

(2)
The amounts shown represent the aggregate grant date fair value of RSUs and PSUs granted to the named executive officers. The fair value of the PSUs was calculated using the Monte Carlo simulation model on the date of grant and based on the market price of our common stock on the date of grant modified to reflect the impact of the market-based vesting condition, including the estimated payout level based on that condition. See “— Grants of Plan-Based Awards in 2015

2017 Table” and “— Elements of Our Compensation Program — Equity Based Awards” for additional details regarding the RSUs granted to named executive officers in fiscal 2017.

​
(3)
See “— Grants of Plan-Based Awards in 2017 Table” under the column “Estimated Future Payouts Under Non-Equity Incentive Plan Awards” for the amounts named executive officers were eligible to earn in fiscal 2017. See also “— Determining the Amount of Elements of Executives’ Compensation in 2017 — Variable Pay” above for a discussion regarding our Bonus Program.
​
(4)
Represents company matching contributions to Fortinet’s 401(k) plan, a tax-qualified defined contribution plan.
​
(5)
Represents a discretionary bonus related to Mr. Whittle’s corporate development responsibilities.
​
​
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Grants of Plan-Based Awards in 2017 Table
The following table presents information concerning each grant of an award made to athe named executive officerofficers in fiscal 20152017 under any plan.

Name​​Type of Award​​Grant
Date		​​Approval
Date		​​
Estimated Future Payouts Under
Non-Equity Incentive Plan
Awards(1)
​​All Other
Stock
Awards:
Number of
Shares of
Stock or
Units
(#)		​​All Other
Option
Awards:
Number of
Shares
Underlying
Options
(#)		​​Exercise
or Base
Price of
Option
Awards
($/Share)		​​
Grant Date
Fair Value of
Stock and
Option
Awards
($)(2)
​
​Threshold
($)		​​Target
($)		​​Maximum
($)		​
Ken Xie​​Cash​​—​���—​​​​21,041​​​​​450,882​​​​​631,235​​​​​—​​​​​—​​​​​—​​​​​—​​
​​​RSU​​2/16/2017​​1/20/2017​​​​—​​​​​—​​​​​—​​​​​50,000​​​​​—​​​​​—​​​​​1,862,000​​
​​​Stock Option​​2/16/2017​​1/20/2017​​​​—​​​​​—​​​​​—​​​​​—​​​​​100,000​​​​​37.24​​​​​1,221,810​​
Michael Xie​​Cash​​—​​—​​​​9,283​​​​​198,919​​​​​278,487​​​​​—​​​​​—​​​​​—​​​​​—​​
​​​RSU​​2/16/2017​​1/20/2017​​​​—​​​​​—​​​​​—​​​​​40,000​​​​​—​​​​​—​​​​​1,489,600​​
​​​Stock Option​​2/16/2017​​1/20/2017​​​​—​​​​​—​​​​​—​​​​​—​​​​​60,000​​​​​37.24​​​​​733,086​​
Andrew Del Matto​​Cash​​—​​—​​​​1,439​​​​​269,904​​​​​377,866​​​​​—​​​​​—​​​​​—​​​​​—​​
​​​RSU​​2/16/2017​​1/20/2017​​​​—​​​​​—​​​​​—​​​​​40,000​​​​​—​​​​​—​​​​​1,489,600​​
​​​Stock Option​​2/16/2017​​1/20/2017​​​​—​​​​​—​​​​​—​​​​​—​​​​​40,000​​​​​37.24​​​​​488,724​​
John Whittle​​Cash​​—​​—​​​​1,170​​​​​219,308​​​​​307,032​​​​​—​​​​​—​​​​​—​​​​​—​​
​​​RSU​​2/16/2017​​1/20/2017​​​​—​​​​​—​​​​​—​​​​​30,000​​​​​—​​​​​—​​​​​1,117,200​​
​​​Stock Option​​2/16/2017​​1/20/2017​​​​—​​​​​—​​​​​—​​​​​—​​​​​30,000​​​​​37.24​​​​​366,543​​
           
           
    Estimated Future Payouts Under
Non-Equity Incentive Plan Awards(1)		 Estimated Future Payouts Under
Equity Incentive Plan Awards		 All Other
Stock
Awards:
Number of
Shares of
Stock or
Units
(#)		 Grant Date
Fair Value
of Stock
Awards
($)(2)
Name Type of
Award		 Grant
Date		 Approval
Date		 Threshold
($)		 Target
($)		 Maximum
($)		 Threshold
(#)		 Target
(#)		 Maximum
(#)
Ken Xie  Cash   —   —   12,396   425,000   595,000   —   —   —   —   — 
    RSU   2/11/2015   1/16/2015   —   —   —   —   —   —   40,000   1,311,400 
    PSU   2/11/2015   1/16/2015   —   —   —   —   40,000   60,000   40,000   1,466,800 
Michael Xie  Cash   —   —   5,469   187,500   262,500   —   —   —   —   — 
    RSU   2/11/2015   1/16/2015   —   —   —   —   —   —   40,000   1,311,400 
    PSU   2/11/2015   1/16/2015   —   —   —   —   40,000   60,000   30,000   1,100,100 
Andrew Del Matto  Cash   —   —   848   254,410   356,174   —   —   —   —   — 
    RSU   2/11/2015   1/16/2015   —   —   —   —   —   —   30,000   983,550 
    PSU   2/11/2015   1/16/2015   —   —   —   —   30,000   45,000   20,000   733,400 
John Whittle  Cash   —   —   689   206,719   275,626(3)   —   —   —   —   — 
    RSU   2/11/2015   1/16/2015   —   —   —   —   —   —   30,000   983,550 
    PSU   2/11/2015   1/16/2015   —   —   —   —   30,000   45,000   20,000   733,400 
​

(1)Reflects threshold, target and maximum target bonus amounts for fiscal 2015 performance under the Bonus Program, as described in“Executive Compensation — Determining the Amount of Elements of Executives’ Compensation — Variable Pay.” These amounts do not necessarily correspond to the actual value that may be recognized by the named executive officer.
(2)The amounts shown represent the grant date fair value of RSUs granted during fiscal 2015, computed in accordance with FASB ASC Topic 718. The assumptions used in the valuation of these awards are set forth in note 11 to our consolidated financial statements, which are included in our Annual Report on Form 10-K for the year ended December 31, 2015, filed with the SEC on February 26, 2016. Grant date fair value is determined for financial statement reporting purposes and does not correspond to the actual value that the named executive officers will receive from the award.
(3)This amount assumes full payout of Mr. Whittle’s additional 10% bonus for strategic alliances and corporate development responsibilities.
(1)
Reflects threshold, target and maximum target bonus amounts for fiscal 2017 performance under the Bonus Program, as described in “Executive Compensation — Determining the Amount of Elements of Executives’ Compensation in 2017 — Variable Pay.” These amounts do not necessarily correspond to the actual value that may be received by the named executive officer.

​

(2)
The amounts shown represent the grant date fair value of RSUs and stock options granted during fiscal 2017, computed in accordance with FASB ASC Topic 718. The assumptions used in the valuation of these awards are set forth in note 11 to our consolidated financial statements, which are included in our Annual Report on Form 10-K for the year ended December 31, 2017, filed with the SEC on February 26, 2018. Grant date fair value is determined for financial statement reporting purposes and does not correspond to the actual value that the named executive officers will realize from the award.
​
​
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​

Outstanding Equity Awards at 20152017 Fiscal Year-End

Table

The following table presents information concerning unexercised options and unvested RSUs and PSUs for each named executive officer outstanding as of the end of fiscal 2015.

December 31, 2017.
Name​​​​​Option Awards​​Stock Awards​
​​​​Number of Securities
Underlying Unexercised
Options (#)		​​Option
Exercise
Price
($)		​​Option
Expiration
Date		​​Number
of Shares
or Units of
Stock That
Have Not
Vested
(#)		​​
Market
Value of
Shares or
Units of
Stock That
Have Not
Vested
($)(2)
​​
Equity
Incentive
Plan 
Awards:
Number of
Unearned
Units That
Have Not
Vested
(#)(3)
​​
Equity
Incentive
Plan 
Awards:
Market or
Payout
Value of
Unearned
Units That
Have Not
Vested
($)(2)
​
​
Grant Date(1)
​​Exercisable​​Unexercisable​
Ken Xie​​2/08/2011​​​​100,000(4)​​​​​—​​​​​20.235​​​2/08/2018​​​​—​​​​​—​​​​​—​​​​​—​​
​​​8/02/2011​​​​50,000(4)​​​​​—​​​​​20.13​​​8/02/2018​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/14/2012​​​​80,000(4)​​​​​—​​​​​26.70​​​2/14/2019​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/12/2014​​​​—​​​​​—​​​​​—​​​—​​​​2,500​​​​​109,225​​​​​—​​​​​—​​
​​​2/11/2015​​​​—​​​​​—​​​​​—​​​—​​​​12,500​​​​​546,125​​​​​—​​​​​—​​
​​​2/11/2015​​​​—​​​​​—​​​​​—​​​—​​​​—​​​​​—​​​​​21,016(5)​​​​​918,189​​
​​​2/11/2016​​​​27,499​​​​​32,501​​​​​23.83​​​2/11/2023​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/11/2016​​​​—​​​​​—​​​​​—​​​—​​​​22,500​​​​​983,025​​​​​—​​​​​—​​
​​​2/16/2017​​​​—​​​​​100,000​​​​​37.24​​​2/16/2024​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/16/2017​​​​—​​​​​—​​​​​—​​​—​​��​50,000​​​​​2,184,500​​​​​—​​​​​—​​
Michael Xie​​2/12/2014​​​​—​​​​​—​​​​​—​​​—​​​​2,500​​​​​109,225​​​​​—​​​​​—​​
​​​2/11/2015​​​​—​​​​​—​​​​​—​​​—​​​​12,500​​​​​545,125​​​​​—​​​​​—​​
​​​2/11/2015​​​​—​​​​​—​​​​​—​​​—​​​​—​​​​​—​​​​​15,762(5)​​​​​688,642​​
​​​2/11/2016​​​​20,624​​​​​24,376​​​​​23.83​​​2/11/2023​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/11/2016​​​​—​​​​​—​​​​​—​​​—​​​​22,500​​​​​983,025​​​​​—​​​​​—​​
​​​2/16/2017​​​​—​​​​​60,000​​​​​37.24​​​2/16/2024​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/16/2017​​​​—​​​​​—​​​​​—​​​—​​​​40,000​​​​​1,747,600​​​​​—​​​​​—​​
Andrew Del Matto​​2/12/2014​​​​—​​​​​—​​​​​—​​​—​​​​7,500​​​​​327,675​​​​​—​​​​​—​​
​​​2/11/2015​​​​—​​​​​—​​​​​—​​​—​​​​9,375​​​​​409,594​​​​​—​​​​​—​​
​​​2/11/2015​​​​—​​​​​—​​​​​—​​​—​​​​—​​​​​—​​​​​10,508(5)​​​​​459,095​​
​​​2/11/2016​​​​13,749​​​​​16,251​​​​​23.83​​​2/11/2023​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/11/2016​​​​—​​​​​—​​​​​—​​​—​​​​16,875​​​​​737,269​​​​​—​​​​​—​​
​​​2/16/2017​​​​—​​​​​40,000​​​​​37.24​​​2/16/2024​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/16/2017​​​​—​​​​​—​​​​​—​​​—​​​​40,000​​​​​1,747,600​​​​​—​​​​​—​​
John Whittle​​2/14/2012​​​​39,166(4)​​​​​—​​​​​26.70​​​2/14/2019​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/12/2014​​​​—​​​​​—​​​​​—​​​—​​​​2,500​​​​​109,225​​​​​—​​​​​—​​
​​​2/11/2015​​​​—​​​​​—​​​​​—​​​—​​​​9,375​​​​​409,594​​​​​—​​​​​—​​
​​​2/11/2015​​​​—​​​​​—​​​​​—​​​—​​​​—​​​​​—​​​​​10,508(5)​​​​​459,095​​
​​​2/11/2016​​​​13,749​​​​​16,251​​​​​23.83​​​2/11/2023​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/11/2016​​​​—​​​​​—​​​​​—​​​—​​​​16,875​​​​​737,269​​​​​—​​​​​—​​
​​​2/16/2017​​​​—​​​​​30,000​​​​​37.24​​​2/16/2024​​​​—​​​​​—​​​​​—​​​​​—​​
​​​2/16/2017​​​​—​​​​​—​​​​​—​​​—​​​​30,000​​​​​1,310,700​​​​​—​​​​​—​​
         
  Option Awards Stock Awards
    Number of Securities
Underlying Unexercised
Options (#)		 Option
Exercise
Price
($)		 Option
Expiration
Date		 Number of
Shares or
Units of
Stock That
Have Not
Vested
(#)		 Market
Value of
Shares or
Units of
Stock That
Have Not
Vested
($)(2)		 Equity
Incentive
Plan
Awards:
Number of
Unearned
Units That
Have Not
Vested
(#)(3)		 Equity
Incentive
Plan
Awards:
Market or
Payout
Value of
Unearned
Units That
Have Not
Vested
($)(2)
Name Grant
Date(1)		 Exercisable Unexercisable
Ken Xie  2/10/2010   100,000(4)   —   8.43   2/10/2017   —   —   —   — 
    2/08/2011   100,000(4)   —   20.235   2/08/2018   —   —   —   — 
    8/02/2011   50,000(4)   —   20.13   8/02/2018   —   —   —   — 
    2/14/2012   76,666   3,334   26.70   2/14/2019   —   —   —   — 
    8/8/2012   —   —   —   —   6,563   204,568   —   — 
    2/13/2013   —   —   —   —   7,813   243,531   —   — 
    8/13/2013   —   —   —   —   —   —   32,500(5)   1,013,025 
    2/12/2014   —   —   —   —   22,500   701,325   —   — 
    5/7/2014   —   —   —   —   —   —   40,000(6)   1,246,800 
    2/11/2015   —   —   —   —   40,000   1,246,800   —   — 
    2/11/2015   —   —   —   —   —   —   40,000(7)   1,246,800 
Michael Xie  1/28/2009   200,000(4)   —   3.735   1/28/2016   —   —   —   — 
    2/10/2010   50,000(4)   —   8.43   2/10/2017   —   —   —   — 
    2/08/2011   100,000(4)   —   20.235   2/08/2018   —   —   —   — 
    8/02/2011   50,000(4)   —   20.13   8/02/2018   —   —   —   — 
    2/14/2012   76,666   3,334   26.70   2/14/2019   —   —   —   — 
    8/8/2012   —   —   —   —   3,126   97,437   —   — 
    2/13/2013   —   —   —   —   12,500   389,625   —   — 
    8/13/2013   —   —   —   —   —   —   17,500(5)   545,475 
    2/12/2014   —   —   —   —   22,500   701,325   —   — 
    5/7/2014   —   —   —   —   —   —   30,000(6)   935,100 
    2/11/2015   —   —   —   —   40,000   1,246,800   —   — 
    2/11/2015   —   —   —   —   —   —   30,000(7)   935,100 
Andrew Del Matto  2/12/2014   —   —   —   —   67,500   2,103,975   —   — 
    2/12/2014   —   —   —   —   —   —   25,000(8)   779,250 
    2/11/2015   —   —   —   —   30,000   935,100   —   — 
    2/11/2015   —   —   —   —   —   —   20,000(7)   623,400 
John Whittle  2/14/2012   38,333   1,667   26.70   2/14/2019   —   —   —   — 
    8/8/2012   —   —   —   —   1,875   58,443   —   — 
    2/13/2013   —   —   —   —   10,938   340,937   —   — 
    8/13/2013   —   —   —   —   —   —   15,000(5)   467,550 
    2/12/2014   —   —   —   —   22,500   701,325   —   — 
    5/7/2014   —   —   —   —   —   —   25,000(6)   779,250 
    2/11/2015   —   —   —   —   30,000   935,100   —   — 
    2/11/2015   —   —   —   —   —   —   20,000(7)   623,400 
​

(1)Reflects options granted under the 2009 Equity Incentive Plan and 2008 Stock Plan, as applicable, and RSUs and PSUs granted under the 2009 Equity Incentive Plan. Unless otherwise indicated below, all options granted to named executive officers vest over a four-year period, at a rate of ¼th upon the first anniversary of the date of grant and then at a rate of  1/48th per month thereafter and all RSUs granted to named executive officers vest over a four-year period, at a rate of ¼th upon the first anniversary of the date of grant and then at a rate of  1/12th per quarter thereafter.
(2)Represents the fair market value of the shares underlying the RSUs as of December 31, 2015, based on the closing price of Fortinet’s common stock, as reported on The NASDAQ Global Select Market, of $31.17 per share on December 31, 2015.
(1)
Reflects stock options, RSUs and PSUs granted under the 2009 Equity Incentive Plan. Unless otherwise indicated below, all options granted to named executive officers vest over four years with 25% vesting one year from the date of grant and the remainder vesting monthly thereafter, and all RSUs granted to named executive officers vest over four years with 25% vesting one year from the date of grant and the remainder vesting quarterly thereafter.

​

(2)
Represents the fair market value of the shares underlying the RSUs and PSUs as of December 31, 2017, based on the closing price on Nasdaq of Fortinet’s common stock on December 29, 2017, which was $43.69 per share.
​
​
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(3)Represents the target number of shares of Fortinet common stock that may vest under PSUs outstanding as of December 31, 2015. Each of these PSUs vests 50% at the end of a two-year service period and up to the remaining 50%, plus any unvested from the two-year period, at the end of a three-year service period based on Fortinet’s relative stock price performance over those respective periods compared to the performance of the NASDAQ Composite Index, as described in more detail under“— Elements of Our Compensation Program — Equity Based Awards” above.
(4)The option is fully vested and immediately exercisable.
(5)The two-year service periods for the PSUs granted to Messrs. Ken Xie, Michael Xie and Whittle in 2013 ended in August 2015, at which time 16,250 PSUs vested for Mr. Ken Xie, 8,750 PSUs vested for Mr. Michael Xie and 7,500 PSUs vested for Mr. Whittle. The three-year service periods for the PSUs granted to Messrs. Ken Xie, Michael Xie and Whittle end in August 2016.
(6)The two- and three-year service periods for the PSUs granted to Messrs. Ken Xie, Michael Xie and Whittle in 2014 end in May 2016 and May ​​
(3)
Represents the target number of shares of Fortinet common stock that may vest under PSUs outstanding as of December 31, 2017. Each of these PSUs vests 50% at the end of a two-year service period and up to the remaining 50%, plus any unvested from the two-year period, at the end of a three-year service period based on Fortinet’s relative stock price performance over those respective periods compared to the performance of the NASDAQ Composite Index.
​
(4)
The option is fully vested and immediately exercisable.
​
(5)
The two-year service periods for the PSUs granted to Messrs. Ken Xie, Michael Xie, Del Matto and Whittle in 2015 ended in February 2017, at which time 18,984 PSUs vested for Mr. Ken Xie, 14,238 PSUs vested for Mr. Michael Xie, 9,492 PSUs vested for Mr. Del Matto and 9,492 PSUs vested for Mr. Whittle. The three-year service period for the PSUs granted to Messrs. Ken Xie, Michael Xie and Whittle in 2015 ends in February 2018, at which time 21,016 PSUs vested for Mr. Ken Xie, 15,762 PSUs vested for Mr. Michael Xie, 10,508 PSUs vested for Mr. Del Matto and 10,508 PSUs vested for Mr. Whittle.
​
2017 respectively.
(7)The two- and three-year service periods for the PSUs granted to Messrs. Ken Xie, Michael Xie, Del Matto and Whittle in 2015 end in February 2017 and February 2018, respectively.
(8)The two-year service period for the PSUs granted to Mr. Del Matto in 2014 ended in February 2016, at which time 18,750 PSUs vested for Mr. Del Matto. The three-year service period for the PSUs granted to Mr. Del Matto ends in February 2017.

2015 Option Exercises and Stock Vested

Table

The following table presents information concerning amounts realized from option exercises and RSUs and PSUs vested during fiscal 20152017 for each of the named executive officers.

​​​Option Awards​​Stock Awards​
Name​​Number of
Shares
Acquired on
Exercise
(#)		​​
Value
Realized on
Exercise
($)(1)
​​Number of
Shares
Acquired on
Vesting
(#)		​​
Value
Realized on
Vesting
($)(2)
​
Ken Xie​​​​50,000​​​​​1,463,473​​​​​88,047​​​​​3,211,506​​
Michael Xie​​​​280,000​​​​​5,331,880​​​​​76,738​​​​​2,791,803​​
Andrew Del Matto​​​​—​​​​​—​​​​​78,867​​​​​2,783,973​​
John Whittle​​​​13,749​​​​​291,066​​​​​61,055​​​​​2,230,733​​
    
 Option Awards Stock Awards
Name Number of
Shares
Acquired on
Exercise
(#)		 Value
Realized on
Exercise
($)(1)		 Number of
Shares
Acquired on
Vesting
(#)		 Value
Realized on
Vesting
($)(2)
Ken Xie  500,000   14,891,000   81,250   3,491,386 
Michael Xie  250,000   10,895,275   57,916   2,385,889 
Andrew Del Matto  —   —   52,500   1,800,450 
John Whittle  85,000   1,653,629   51,250   2,097,232 
​

(1)The value realized on exercise reflects the difference between the fair market value of Fortinet common stock at the time of exercise on the exercise date and the exercise price of the option. Amounts shown are presented on an aggregate basis for all exercises that occurred during 2015.
(2)The value realized on vesting reflects the aggregate fair market value of all Fortinet common stock issued pursuant to vested RSUs during 2015.

(1)
The value realized on exercise reflects the difference between the fair market value of Fortinet common stock at the time of exercise on the exercise date and the exercise price of the option. Amounts shown are presented on an aggregate basis for all exercises that occurred during 2017.
​
(2)
The value realized on vesting reflects the aggregate fair market value of all Fortinet common stock issued pursuant to vested RSUs and PSUs during 2017.
​
Potential Payments Upon Termination or Change of Control

Termination or Change of Control Arrangements

Ken Xie.Xie.   On February 4, 2016, we entered into an Amended and Restated Change of Control Severance Agreement with Mr. Ken Xie, our Chief Executive Officer, under which he may receive certain payments and benefits upon certain terminations of employment, provided that he has provided us with an executed release of claims and subject to non-solicitation and non-competition for a period of twelve12 months. The amendment was entered into to clarify Mr. Ken Xie’s prior Change of Control Severance Agreement and did not reflect substantive changes. The term of Mr. Ken Xie’s Amended and Restated Change of Control Severance Agreement expires on August 7, 2019.

This agreement provides that, if Mr. Ken Xie’s employment is terminated without Cause (as defined below), or if he terminates his employment with us for Good Reason (as defined below), prior to, or absent, a Change of Control (as defined below) or after twelve12 months following a Change of Control, he will be entitled to a severance payment in an amount equal to twelve12 months of his then-current base salary and twelve12 months of medical, dental and/or vision benefits for him and/or his eligible dependents. If Mr. Ken Xie is terminated without Cause, or if he terminates his employment with us for Good Reason, within one


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year following a Change of Control, in addition to receiving twelve12 months of base salary (as in effect immediately prior to the Change of Control or his termination, whichever is greater) and twelve12 months of medical, dental,

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and/or vision benefits for him and/or his eligible dependents, Mr. Ken Xie’s unvested equity awards will immediately vest as of his termination date. The awards will remain exercisable, to the extent applicable, following the termination for the period prescribed in the respective stock plan and agreement for each award. In the event any payment to Mr. Ken Xie is subject to the excise tax imposed by Section 4999 of the Code (as a result of a payment being classified as a parachute payment“parachute payment” under Section 280G of the Code), he will be entitled to receive such payment as would entitle him to receive the greatest after-tax benefit of either the full payment or a lesser payment which would result in no portion of such severance benefits being subject to excise tax.

Michael Xie.Xie.   On February 4, 2016, we entered into an Amended and Restated Change of Control Severance Agreement with Mr. Michael Xie, our President and Chief Technology Officer, under which he may receive certain payments and benefits upon certain terminations of employment, provided that he has provided us with an executed release of claims and subject to non-solicitation and non-competition for a period of twelve12 months. The amendment was entered into to clarify Mr. Michael Xie’s prior Change of Control Severance Agreement and did not reflect substantive changes. The term of Mr. Michael Xie’s Amended and Restated Change of Control Severance Agreement expires on August 7, 2019.

This agreement provides that, if Mr. Michael Xie’s employment is terminated without Cause, or if he terminates his employment with us for Good Reason, prior to, or absent, a Change of Control or after twelve12 months following a Change of Control, he will be entitled to a severance payment and/or benefits as determined by us in our sole discretion. If he is terminated without Cause, or if he terminates his employment with us for Good Reason, within one year following a Change of Control, he will receive a severance payment equal to six months of his base salary (as in effect immediately prior to the Change of Control or his termination, whichever is greater), twelve and 12 months of medical, dental and/or vision benefits for him and/or his eligible dependents, and the unvested portion of his equity awards will immediately vest as of his termination date. The awards will remain exercisable, to the extent applicable, following the termination for the period prescribed in the respective stock plan and agreement for each award. In the event any payment to Mr. Michael Xie is subject to the excise tax imposed by Section 4999 of the Code (as a result of a payment being classified as a parachute payment“parachute payment” under Section 280G of the Code), he will be entitled to receive such payment as would entitle him to receive the greatest after-tax benefit of either the full payment or a lesser payment which would result in no portion of such severance benefits being subject to excise tax.

Andrew Del Matto.Matto.   On February 4, 2016, we entered into an Amended and Restated Change of Control Severance Agreement with AndrewMr. Del Matto, our former Chief Financial Officer, under which he maywas eligible to receive certain payments and benefits upon certain terminations of employment, provided that he has provided us with an executed release of claims and subject to non-solicitation and non-competition for a period of twenty-four24 months. The amendment was entered into to clarify Mr. Del Matto’s prior Change of Control Severance Agreement and did not reflect substantive changes. The term of Mr. Del Matto’s Change of Control Severance Agreement terminates on December 17, 2018.

This agreement provides that, if

Mr. Del Matto’s employment is terminated without Cause, or if he terminates his employment with us for Good Reason, prior to,ended on February 16, 2018, the effective date of his resignation. Mr. Del Matto did not receive any severance, continuation of benefits or absent, a Changeacceleration of Control or after twelve months following a Change of Control, he will be entitled to a severance payment equal to nine months of base salary (asvesting in effect immediately prior toconnection with his termination), nine months of medical, dental and/or vision benefits for him and/or his eligible dependents and hisresignation. Mr. Del Matto’s unvested equity awards will immediately vest as to the awards that would have vested over the next nine months and such accelerated awards become exercisable in full, and our right of repurchase or reacquisition with respect to such awards will lapse. If Mr. Del Matto is terminated without Cause, or if he terminates his employment with us for Good Reason, within one year following a Change of Control, he will be entitled to a severance payment equal to twelve months of base salary (as in effect immediately prior to the Change of Control or his termination, whichever is greater), twelve months of medical, dental and/or vision benefits for him and/or his eligible dependents and his unvested equity awards will immediately vestwere cancelled as of the end of his termination date. The awards will remain exercisable, to the extent applicable, following the termination for the period prescribed in the respective stock plan and agreement for each award. In the event any payment to Mr. Del Matto is subject to

employment.

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the excise tax imposed by Section 4999 of the Code (as a result of a payment being classified as a parachute payment under Section 280G of the Code), he will be entitled to receive such payment as would entitle him to receive the greatest after-tax benefit of either the full payment or a lesser payment which would result in no portion of such severance benefits being subject to excise tax.

John Whittle.Whittle.   On February 4, 2016, we entered into an Amended and Restated Change of Control Severance Agreement with JohnMr. Whittle, our Vice President of Corporate Development, General Counsel and Corporate Secretary, under which he may receive certain payments and benefits upon certain terminations of employment, provided that he has provided us with an executed release of claims and subject to non-solicitation and non-competition for a period of twelve12 months. The amendment was entered into to clarify Mr. Whittle’s prior Change of Control Severance Agreement and did not reflect substantive changes. The term of Mr. Whittle’s Amended and Restated Change of Control Severance Agreement expires on August 7, 2019.

This agreement provides that, if Mr. Whittle’s employment is terminated without Cause, or if he terminates his employment with us for Good Reason, prior to, or absent, a Change of Control or after twelve12 months following a Change of Control, he will be entitled to a severance payment equal to twelve12 months of base salary (as in effect immediately prior to his termination) and his unvested equity awards will immediately vest as to the awards that would have vested over the next twelve12 months and such accelerated awards become exercisable in full, and our right of repurchase or reacquisition with respect to such awards will lapse. If Mr. Whittle is terminated without Cause, or if he terminates his employment with us for Good Reason, within one year following a Change of Control, then in addition to receiving twelve12 months base salary (as
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(as in effect immediately prior to the Change of Control or his termination, whichever is greater), he will receive twelve12 months of medical, dental and/or vision benefits for him and/or his eligible dependents, and all of his unvested equity awards immediately vest as of his termination date. The awards will remain exercisable, to the extent applicable, following the termination for the period prescribed in the respective stock plan and agreement for each award. In the event any payment to Mr. Whittle is subject to the excise tax imposed by Section 4999 of the Code (as a result of a payment being classified as a parachute payment“parachute payment” under Section 280G of the Code), he will be entitled to receive such payment as would entitle him to receive the greatest after-tax benefit of either the full payment or a lesser payment which would result in no portion of such severance benefits being subject to excise tax.

For the purpose of our Change of Control Severance Agreements with the above-mentioned executives:

(1)“Change of Control” generally means:
(a)the acquisition by one person or group of persons of Fortinet securities representing 50% or more of total voting power at the time of acquisition;
(b)a change in the composition of the Board of Directors occurring within a 12 month period, which results in fewer than a majority of the directors on the Board of Directors being incumbent directors;
(c)the date of the consummation of a merger or consolidation between Fortinet and any other corporation that has been approved by our stockholders, other than a merger or consolidation that would result in our voting securities representing 50% or more of the total voting power immediately after such merger or consolidation, or if our stockholders approve a plan of Fortinet’s complete liquidation; or
(d)a change in the ownership of a substantial portion of Fortinet’s assets, having a total gross fair market value equal to or more than 50% of the total fair market value of all of Fortinet’s assets immediately prior to such acquisition.

(1)
“Change of Control” generally means:
​
(a)
the acquisition by one person or group of persons of Fortinet securities representing 50% or more of total voting power at the time of acquisition;
​
(b)
a change in the composition of the Board of Directors occurring within a 12-month period, which results in fewer than a majority of the directors on the Board of Directors being incumbent directors;
​
(c)
the date of the consummation of a merger or consolidation between Fortinet and any other corporation that has been approved by our stockholders, other than a merger or consolidation that would result in our voting securities representing 50% or more of the total voting power immediately after such merger or consolidation, or if our stockholders approve a plan of Fortinet’s complete liquidation; or
​
(d)
a change in the ownership of a substantial portion of Fortinet’s assets, having a total gross fair market value equal to or more than 50% of the total fair market value of all of Fortinet’s assets immediately prior to such acquisition.
​
Notwithstanding the foregoing, a transaction that does not constitute a change of control event under Treasury Regulation 1.409A-3(i)(5)(v) or (vii) shall not be considered a Change of Control.

(2)“Cause” generally means:
(a)an act of dishonesty by the executive in connection with the executive’s responsibilities as an employee that materially and adversely affects the company;
(2)
“Cause” generally means:

​

(a)
an act of dishonesty by the executive in connection with the executive’s responsibilities as an employee that materially and adversely affects Fortinet;
​
(b)
the executive’s conviction of, or plea of nolo contendere to, a felony or any crime involving fraud, embezzlement or any other act of moral turpitude;
​
(c)
the executive’s gross misconduct that materially and adversely affects Fortinet’s reputation or business; or
​
(d)
the executive’s continued intentional refusal to perform employment duties in a material fashion that materially and adversely affects Fortinet’s reputation or business, after the executive has received a written demand of performance from Fortinet that specifically sets forth the factual basis for Fortinet’s belief that the executive has not substantially performed the executive’s duties and the executive continues to refuse to cure such non-performance within thirty days after receiving such notice.
​
(3)
“Good Reason” generally means the occurrence of one of more of the following events without the executive’s express written consent:
​
(a)
a material diminution in the executive’s position or responsibilities with Fortinet;
​
(b)
a material reduction in the base salary of the executive;
​
(c)
a material change in the geographic location of the executive of 25 miles or more;
​
​
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(b)the executive’s conviction of, or plea of nolo contendere to, a felony or any crime involving fraud, embezzlement or any other act of moral turpitude;
(c)the executive’s gross misconduct that materially and adversely affects the company’s reputation or business; or
(d)the executive’s continued intentional refusal to perform employment duties in a material fashion that materially and adversely affects the company’s reputation or business, after the executive has received a written demand of performance from the company that specifically sets forth the factual basis for the company’s belief that the executive has not substantially performed his duties and the executive continues to refuse to cure such non-performance within thirty days after receiving such notice.
(3)“Good Reason” generally means the occurrence of one of more of the following events without the executive’s express written consent:
(a)a material diminution in the executive’s position or responsibilities with the company;
(b)a material reduction in the base salary of the executive;
(c)a material change in the geographic location of the executive of twenty-five miles or more;
(d)any material breach by the company of any material provision of the Change of Control Severance Agreement; or
(e)the company’s failure to obtain the assumption of the Change of Control Severance Agreement by any successor to substantially all of the company’s business and/or assets.

(d)
any material breach by Fortinet of any material provision of the Change of Control Severance Agreement; or
​
(e)
Fortinet’s failure to obtain the assumption of the Change of Control Severance Agreement by any successor to substantially all of Fortinet’s business and/or assets.
​
The named executive officer may not resign for Good Reason without first providing us with written notice of the acts or omissions constituting the grounds for “Good Reason” within 90 days of the initial existence of the grounds for Good Reason and a reasonable cure period of not less than 30 days following the date of such notice.

Estimated Payments Uponupon Termination or Change in Control

The following table provides information concerning the estimated payments and benefits that would be provided in the circumstances described above for each of the named executive officers. Except where otherwise noted, payments and benefits are estimated assuming that the triggering event took place on the last business day of fiscal 2015 (December 31, 2015),2017, which was December 29, 2017, and the price per share of Fortinet’s common stock iswas the closing price on the NASDAQ Global MarketNasdaq as of that date, ($31.17).which was $43.69 per share. There can be no assurance that a triggering event would produce the same or similar results as those estimated below if such event occurs on any other date or at any other price, of if any other assumption used to estimate potential payments and benefits is not correct. Due to the number of factors that affect the nature and amount of any potential payments or benefits, any actual payments and benefits may be different.

​​​
Qualifying Termination Not Within
One Year after a Change of Control(1)
​​
Qualifying Termination Within One
Year after a Change of Control(1)
​
Name​​
Salary
($)(2)
​​Acceleration of
Equity Vesting
($)		​​
Salary
($)(2)
​​
Acceleration of
Equity Vesting
($)(3)
​
Ken Xie(4)
​​​​450,882​​​​​—​​​​​450,882​​​​​6,049,316​​
Michael Xie(5)
​​​​—​​​​​—​​​​​198,919​​​​​4,959,050​​
Andrew Del Matto(6)
​​​​311,428​​​​​2,156,336(7)​​​​​415,237​​​​​4,270,846​​
John Whittle(5)
​​​​365,514​​​​​2,043,601(7)​​​​​365,514​​​​​3,550,996​​
    
 Qualifying Termination Not
Within One Year after a
Change of Control(1)		 Qualifying Termination Within
One Year after a Change of
Control(1)
Name Salary
($)(2)		 Acceleration of
Equity Vesting
($)		 Salary
($)(2)		 Acceleration of
Equity Vesting
($)(3)
Ken Xie(4)  425,000   —   425,000   5,917,753 
Michael Xie(5)  —   —   187,500   4,865,765 
Andrew Del Matto(6)  293,550   1,636,425(7)   391,400   4,636,538 
John Whittle(5)  344,532   1,916,614(7)   344,532   3,913,458 
​

(1)A “Qualifying Termination” under the Change of Control Severance Agreement is an involuntary termination without “Cause” or a voluntary resignation for “Good Reason,” as defined above.
(2)The severance amount related to base salary was determined based on base salaries in effect on December 31, 2015, the last business day of fiscal 2015.
(1)
A “Qualifying Termination” under the Change of Control Severance Agreement is an involuntary termination of employment without “Cause” or a voluntary resignation for “Good Reason,” in each case as defined above.

​

(2)
The severance amount related to base salary was determined based on base salaries in effect on December 29, 2017, the last business day of 2017.
​
(3)
The value is calculated by multiplying (a) the number of unvested shares by (b) (i) the difference between $43.69 (the per share closing stock price on December 29, 2017) and the exercise price for stock options or (ii) $43.69 for RSUs and PSUs. The value of accelerated PSUs is based on achievement of an award multiplier of 100%.
​
(4)
The named executive officer is also eligible to receive reimbursement for insurance premium expenses incurred for group health insurance continuation coverage under Title X of the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”), for a period of up to 12 months after his Qualifying Termination prior to or absent a Change of Control, after 12 months following a Change of Control, or within one year after a Change of Control. The value as of December 31, 2017 for 12 months of COBRA continuation coverage was $28,602.
​
(5)
The named executive officer is also eligible to receive reimbursement for insurance premium expenses incurred for group health insurance continuation coverage under COBRA for a period of up to 12 months after his Qualifying Termination within one year after a Change of Control. The value as of December 31, 2017 for 12 months of COBRA continuation coverage was $28,602.
​
​
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(3)The value is calculated by multiplying (a) the number of unvested shares by (b) (i) the difference between $31.17 and the exercise price for stock options or (ii) $31.17 for RSUs and PSUs. The value of accelerated PSUs is based on achievement of an award multiplier of 100%.
(4)The named executive officer is also eligible to receive reimbursement for insurance premium expenses incurred for group health insurance continuation coverage under Title X of the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”), for a period of up to 12 months after his Qualifying Termination prior to or absent a Change of Control, after 12 months following a Change of Control, or within one year after a Change of Control. The value as of December 31, 2015 for 12 months of COBRA continuation coverage was $28,780.
(5)The named executive officer is also eligible to receive reimbursement for insurance premium expenses incurred for group health insurance continuation coverage under COBRA for a period of up to 12 months after his Qualifying Termination within one year after a Change of Control. The value as of December 31, 2015 for 12 months of COBRA continuation coverage was $28,780.
(6)The named executive officer is also eligible to receive reimbursement for insurance premium expenses incurred for group health insurance continuation coverage under COBRA for a period of (i) up to nine months after his Qualifying Termination prior to or absent a Change of Control and after 12 months following a Change of Control and (ii) up to 12 months after his Qualifying Termination within one year after a Change of Control. The value as of December 31, 2015 for nine months and 12 months of COBRA continuation coverage was $21,585 and $28,780, respectively.
(7)The value is calculated by multiplying (a) the number of shares that would have vested over nine months (in the case of Mr. Del Matto) or 12 months (in the case of Mr. Whittle) following December 31, 2015 by (b) (i) the difference between $31.17 (the per share closing stock price on December 31, 2015) and the exercise price for stock options (if any) and (ii) $31.17 for RSUs and PSUs. The value of accelerated PSUs is based on achievement of an award multiplier of 100%.

​

(6)
The named executive officer is also eligible to receive reimbursement for insurance premium expenses incurred for group health insurance continuation coverage under COBRA for a period of  (i) up to nine months after his Qualifying Termination prior to or absent a Change of Control and after 12 months following a Change of Control and (ii) up to 12 months after his Qualifying Termination within one year after a Change of Control. The value as of December 31, 2017 for nine months and 12 months of COBRA continuation coverage was $21,452 and $28,602, respectively.
​
(7)
The value is calculated by multiplying (a) the number of shares that would have vested over nine months (in the case of Mr. Del Matto) or 12 months (in the case of Mr. Whittle) following December 31, 2017 by (b) (i) the difference between $43.69 (the per share closing stock price on December 29, 2017) and the exercise price for stock options and (ii) $43.69 for RSUs and PSUs. The value of accelerated PSUs is based on achievement of an award multiplier of 100%.
​
CEO Pay Ratio Disclosure
As required by Section 953(b) of the Dodd-Frank Wall Street Reform and Consumer Protection Act, and Item 402(u) of Regulation S-K, we are providing the following information about the relationship of the annual total compensation of our employees and the annual total compensation of our Chief Executive Officer, Mr. Ken Xie (our “CEO”):
For 2017:
•
the median of the annual total compensation of our employees was $114,747;
​
•
the annual total compensation of our CEO was $3,960,438; and
​
•
the ratio of the annual total compensation of our CEO to the median of the annual total compensation of our employees was 34.5 to 1. This ratio is a reasonable estimate calculated in a manner consistent with SEC rules.
​
We identified the employee with compensation at the median of the annual total compensation of all our employees using the following methodology:
We chose to use as our consistently-applied compensation measure each employee’s base salary, allowances, bonuses, sales commissions and annual equity awards for the 12-month period from January 1, 2017 through December 31, 2017. For simplicity, we calculated annual base pay by annualizing this amount using a reasonable estimate of the hours worked during 2017 for hourly employees and the actual annual salary rate on December 31, 2017 for our remaining employees. With respect to annual equity awards, we valued all equity awards granted during 2017 using the December 29, 2017 market price of our common stock.
In determining our employee population, we considered the individuals, excluding our CEO, who were employed by us and our consolidated subsidiaries on December 31, 2017, whether employed on a full-time, part-time, seasonal or temporary basis. We did not include any contractors or other non-employee workers in our employee population.
For employees paid other than in U.S. dollars, we converted their compensation to U.S. dollars using the applicable exchange rates in effect on December 29, 2017. We did not make any cost-of-living adjustment.
Using this methodology, we identified the individual at the median of our employee population. We then calculated the annual total compensation for this individual using the same methodology we use to calculate the amount reported for our CEO in the “Total” column of the 2017 Summary Compensation Table as set forth in this proxy statement.
As disclosed in the 2017 Summary Compensation Table, the annual total compensation for our CEO was $3,960,438.
Because SEC rules for identifying the median of the annual total compensation of all employees allow companies to adopt a variety of methodologies, apply certain exclusions, and make reasonable estimates and assumptions that reflect their employee population and compensation practices, the pay ratio reported by other companies may not be comparable to our pay ratio, as other companies have different employee
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populations and compensation practices and may have used different methodologies, exclusions, estimates and assumptions in calculating their pay ratios. As explained by the SEC when it adopted these rules, the rule was not designed to facilitate comparisons of pay ratios among different companies, even companies within the same industry, but rather to allow stockholders to better understand and assess each particular company’s compensation practices and pay ratio disclosures.
Compensation of Directors

Director Compensation Table for Fiscal 2015

2017

The following table provides information concerning the compensation paidearned by Fortinet to each of our non-employee directors for service on ourthe Board of Directors in fiscal 2015.2017. Messrs. Ken Xie and Michael Xie, who are employees of Fortinet, do not receive additional compensation for their services as directors.

Name​​
Fees Earned or
Paid in Cash
($)(1)
​​
Stock
Awards
($)(2)
​​Total
($)		​
Peter D. Cohen(3)
​​​​22,317​​​​​578,400​​​​​600,717​​
Ming Hsieh(4)
​​​​59,250​​​​​237,769​​​​​297,019​​
Gary Locke(5)
​​​​50,000​​​​​197,450​​​​​247,450​​
William H. Neukom(6)
​​​​59,000​​​​​237,769​​​​​296,769​​
Christopher B. Paisley(7)
​​​​85,000​​​​​237,769​​​​​322,769​​
Judith Sim(8)
​​​​50,250​​​​​197,450​​​​​247,700​​
   
Name Fees Earned or
Paid in Cash
($)(3)		 Stock
Awards
($)(4)(5)		 Total
($)
Ming Hsieh  48,973   244,150   293,123 
Chenming Hu(1)  21,610   —   21,610 
Gary Locke  12,024   499,650   511,674 
Hong Liang Lu(2)  31,152   244,150   275,302 
William H. Neukom  47,382   244,150   291,532 
Christopher B. Paisley  71,731   244,150   315,881 
Judith Sim  22,663   732,450   755,113 
​

(1)Mr. Hu’s three-year term on our Board of Directors expired at the 2015 Annual Meeting and he did not stand for re-election.
(2)Mr. Lu was a member of our Board of Directors in 2015 until his resignation from the Board of Directors on August 24, 2015.
(3)Reflects fees earned or paid in cash for services rendered in the last fiscal year.
(4)The amounts shown represent the aggregate grant date fair value of RSUs awarded to directors during the year, computed in accordance with FASB ASC Topic 718. The assumptions used in the valuation of these awards are set forth in note 11 to our consolidated financial statements, which are included in our Annual Report on Form 10-K for the year ended December 31, 2015, filed with the SEC on February 26, 2016. Grant date fair value is determined for financial statement reporting purposes and does not correspond to the actual value that the directors will receive from the awards.
(1)
Reflects fees earned or paid in cash for services rendered in the last fiscal year.

​

(2)
The amounts shown represent the aggregate grant date fair value of the RSU award made to each director during the year, computed in accordance with FASB ASC Topic 718. The assumptions used in the valuation of these awards are set forth in note 11 to our consolidated financial statements, which are included in our Annual Report on Form 10-K for the year ended December 31, 2017, filed with the SEC on February 26, 2018. The grant date fair value of these awards is determined for financial statement reporting purposes and does not correspond to the actual value that the directors will receive from the awards.
​
(3)
As of December 31, 2017, Mr. Cohen held 15,000 RSUs, of which (i) 5,000 RSUs will vest in full on August 9, 2018, so long as Mr. Cohen is a member of the Board of Directors on such date; and (ii) 10,000 RSUs will vest in full on August 9, 2020, so long as Mr. Cohen is a member of the Board of Directors on such date. Mr. Cohen was appointed to the Board of Directors effective July 14, 2017.
​
(4)
As of December 31, 2017, Mr. Hsieh held 7,015 RSUs, of which (i) 994 RSUs will vest quarterly through August 6, 2018, so long as Mr. Hsieh is a member of the Board of Directors on each applicable vesting date; (ii) 6,021 RSUs will vest in full on August 9, 2018, so long as Mr. Hsieh is a member of the Board of Directors on such date.
​
(5)
As of December 31, 2017, Mr. Locke held 10,000 RSUs, of which (i) 5,000 RSUs will vest quarterly through November 5, 2018, so long as Mr. Locke is a member of the Board of Directors on each applicable vesting date; and (ii) 5,000 RSUs will vest in full on August 9, 2018, so long as Mr. Locke is a member of the Board of Directors on such date.
​
(6)
As of December 31, 2017, Mr. Neukom held 7,015 RSUs, of which (i) 994 RSUs will vest quarterly through August 6, 2018, so long as Mr. Neukom is a member of the Board of Directors on each applicable vesting date and (ii) 6,021 RSUs will vest in full on August 9, 2018, so long as Mr. Neukom is a member of the Board of Directors on each applicable vesting date.
​
​
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(5)As of December 31, 2015, the aggregate number of shares underlying options and RSUs outstanding for each of our non-employee directors was:

NameAggregate Number
(7)
of Shares
Underlying Options
and RSUs
Outstanding
Ming Hsieh16,144
Chenming Hu—
Gary Locke15,000
Hong Liang Lu—
William H. Neukom17,213
Christopher B. Paisley56,901
Judith Sim15,000

As of December 31, 2017, Mr. Paisley held 7,015 RSUs, of which (i) 994 RSUs will vest quarterly through August 6, 2018, so long as Mr. Paisley is a member of the Board of Directors on each applicable vesting date; and (ii) 6,021 RSUs will vest in full on August 9, 2018, so long as Mr. Paisley is a member of the Board of Directors on such date. In addition, as of December 31, 2017, Mr. Paisley held stock options exercisable for 7,000 shares of our common stock, all of which were fully vested and will expire on August 2, 2018 if not exercised prior to such date.
​
(8)
As of December 31, 2017, Ms. Sim held 8,750 RSUs, of which (i) 3,750 RSUs will vest quarterly through August 5, 2018, so long as Ms. Sim is a member of the Board of Directors on each applicable vesting date; and (ii) 5,000 RSUs will vest in full on August 9, 2018, so long as Ms. Sim is a member of the Board of Directors on such date.
​
Standard Director Compensation Arrangements

In accordance with our annual cash retainer policy and equity award grant policy applicable to non-employee directors, each non-employee director is entitled to receive the following compensation for service on the Board of Directors:

•
an annual cash retainer for serving on the Board of Directors of  $40,000, paid quarterly, in addition to the annual cash retainer for service on the committees of the Board of Directors as discussed below;
​
•
an annual cash retainer for serving as lead independent director of the Board of Directors of $10,000,$20,000, paid quarterly;
upon initial appointment or election to the Board of Directors, an automatic initial grant of 15,000 RSUs vesting over a 3-year period;​
•
after completion of each full year of service, an additional annual refresh“refresh” grant of  (i) 5,000 RSUs vesting over a 1-year period;one-year period for non-employee directors who had not fully vested in their initial RSU grant as of July 2017 and (ii) a number of RSUs based on a total grant value equal to the midpoint between the peer 25th and 50th percentiles per Compensia’s director compensation analysis, vesting over a one-year term, for non-employee directors who had fully vested in their initial RSU grant as of July 2017;
​
•
an annual cash retainer for serving in a non-chair position on the (i) Audit Committee of  $8,000,$10,000, (ii) CompensationHuman Resources Committee of  $5,000,$10,000 and (iii) NominatingGovernance Committee of  $5,000; and Corporate Governance committee of $3,000; and
​
•
an annual cash retainer of  (i) $20,000$25,000 for serving as the chair of the Audit Committee, (ii) $10,000$20,000 for serving as the chair of the CompensationHuman Resources Committee and (iii) $5,000$15,000 for serving as the chair of the Nominating and Corporate Governance Committee.

​
Prior to our 2015 Annual Meeting, on which date the annual cash retainer was increased to $40,000,July 14, 2017: (1) the annual cash retainer for serving in a non-chair position on the Audit Committee, Human Resources Committee and Governance Committee was $8,000, $5,000 and $3,000, respectively; (2) the annual cash retainer for serving as the chair of the Audit Committee, Human Resources Committee and Governance Committee was $20,000, $10,000 and $5,000, respectively; (3) upon initial appointment or election to the Board of Directors, was $33,000, paid quarterly. Prior to July 17, 2015, on which date the initial RSU grant and annual refresh RSU grant for serving on the Board of Directors were changed to the above, non-employee directors received an initial grant of 20,00015,000 RSUs vesting over a 4-year periodthree-year period; and an(4) the annual refreshadditional “refresh” grant made to each non-employee director after completion of 6,000each full year of service was 5,000 RSUs vesting over a 4-year period for serving on the Board of Directors.three-year period. Otherwise, the compensation described above remained unchanged from the date of the 20152017 Annual Meeting.

Termination or Change of Control Arrangements

We have entered into change of control agreements with each of theour non-employee directors. These agreements provide that, upon a Change of Control, 100% of the outstanding and unvested equity awards held by such directors will immediately vest.

vest in full.

“Change of Control” in our change of control agreements with our non-employee directors has the same meaning as used in our Change of Control Severance Agreements with the named executive officers. See “— Potential Payments Upon Termination or Change of Control — Termination or Change of Control Arrangements.”


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​

Other Arrangements

While our non-employee directors are not typically paid or reimbursed for travel, lodging and related expenses associated with attending meetings of the Board of Directors or committees of the Board of Directors and for participating in activities related to service on the Board of Directors, we have from time-to-time paid or reimbursed our non-employee directors for reasonable expenses associated with attendance at meetings of the Board of Directors or committees of the Board of Directors.

Equity Compensation Plan Information

We currently maintain the following two equity compensation plans that provide for the issuance of shares of our common stock to our officers and other employees, directors and consultants: the 2009 Equity Incentive Plan, as amended (the “2009 Plan”), and the 2011 Employee Stock Purchase Plan, each of which has been approved by stockholders, and the Meru Networks, Inc. 2010 Equity Incentive Plan (the “Meru 2010 Plan”), which has not been approved by stockholders. The Meru 2010 Plan was assumed by Fortinet on July 8, 2015 pursuant to an Agreement and Plan of Merger by and among Fortinet, Meru Network, Inc. and Malbrouck Acquisition Corp., dated as of May 27, 2015. We previously maintained the Amended and Restated 2000 Stock Plan (the “2000 Plan”) and the 2008 Stock Plan (the “2008 Plan”), both of which we terminated in connection with our initial public offering in 2009. The termination of the 2000 Plan and 2008 Plan did not affect awards outstanding under thesuch plans, which continuecontinued to be governed by the terms and conditions of the respective plans.

As of December 31, 2017, there were no awards outstanding under either the 2000 Plan or the 2008 Plan.

The following table summarizes the number of outstanding options and rights and number of securities remaining available for future issuance under our equity compensation plans as of December 31, 2015.

2017.
​​​(a)​​(b)​​(c)​
Plan category​​Number of securities to be
issued upon exercise
of outstanding options,
warrants and rights
(#)		​​Weighted-average exercise
price per share of
outstanding options,
warrants and rights
($)		​​Number of securities remaining
available for future issuance
under equity compensation
plans (excluding securities
reflected in column (a))
(#)		​
Equity compensation plans approved by security
holders		​​​​12,839,699(1)​​​​$27.50(2)​​​​​49,869,573(3)​​
Equity compensation plans not approved by security
holders		​​​​584​​​​​N/A​​​​​—​​
Total​​​​12,840,283​​​​$27.50​​​​​49,869,573​​
​
   
 (a) (b) (c)
Plan category Number of securities to
be issued upon exercise
of outstanding options,
warrants and rights
(#)		 Weighted-average
exercise price per share
of outstanding options,
warrants and rights
($)		 Number of securities
remaining available for
future issuance under
equity compensation
plans (excluding
securities reflected in
column (a))
(#)
Equity compensation plans approved by security holders  16,190,249(1)  $20.03(2)   40,827,422(3) 
Equity compensation plans not approved by security holders  34,571   N/A   — 
Total  16,224,820  $20.03   40,827,422 
​

(1)Excludes purchase rights accruing under the 2011 Employee Stock Purchase Plan.
(2)The weighted-average exercise price does not reflect the shares that will be issued in connection with the settlement of RSUs and PSUs, which have no exercise price.
(3)Includes 35,610,642 shares of common stock available for issuance under the 2009 Plan and 5,216,780 shares available for issuance under the 2011 Employee Stock Purchase Plan. The shares that are reserved for issuance under the 2009 Plan are subject to automatic increase on January 1 each year by the lesser of (a) 5% of the outstanding shares of our common stock as of the last day of our immediately preceding fiscal year, (b) 14,000,000 shares or (c) such number of shares determined by the Board of Directors. On January 1, 2016, an additional 8,569,936 shares were reserved for issuance under this automatic increase feature of the 2009 Plan.
(1)
Excludes purchase rights accruing under the Employee Stock Purchase Plan.

​

(2)
The weighted-average exercise price does not reflect the shares that will be issued in connection with the settlement of RSUs and PSUs, which have no exercise price.
​
(3)
Includes 46,938,599 shares of common stock available for issuance under the 2009 Plan and 2,930,974 shares available for issuance under the Employee Stock Purchase Plan. The shares that are reserved for issuance under the 2009 Plan are subject to automatic increase on January 1 each year by the lesser of (a) 5% of the outstanding shares of our common stock as of the last day of our immediately preceding fiscal year, (b) 14,000,000 shares or (c) such number of shares determined by the Board of Directors. On January 1, 2018, an additional 8,394,461 shares were reserved for issuance under this automatic increase feature of the 2009 Plan.
​
​
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​​​

CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

Related-Person Transactions

Indemnification of Officers and Directors

Our amended and restated certificate of incorporation and bylaws provide that we will indemnify each of our directors and officers to the fullest extent permitted by Delaware law. In addition, we have entered into indemnification agreements with each of our directors and executive officers.

Review of Related-Person Transactions

In accordance with theits charter, for the Audit Committee of the Board of Directors, our Audit Committee is responsible for approving and overseeing any related-person transaction. We intend to ensure that all future transactions between us and our officers, directors and principal stockholders and their affiliates are approved by ourthe Audit Committee on terms no less favorable to us than those that we could obtain from unaffiliated third parties.

For purposes of these procedures, the terms “related person” and “transaction” have the meanings contained in Item 404 of Regulation S-K.

The individuals and entities that are considered “related persons” include:

•
Directors, nominees for director and executive officers of Fortinet;
​
•
Any person known to be the beneficial owner of more than five percent of Fortinet’s common stock (a “5% Stockholder”); and
​
•
Any immediate family member, as defined in Item 404(a) of Regulation S-K, of a director, nominee for director, executive officer and 5% Stockholder.
​

​
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SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

Under Section 16 of the Exchange Act, Fortinet’s directors, certain officers and any persons holding more than ten percent of Fortinet’s common stock are required to report initial ownership of the Fortinet common stock and any subsequent changes in ownership to the SEC. Specific due dates have been established by the SEC, and Fortinet is required to disclose in this proxy statement any failure to file required ownership reports by these dates. Based solely on a review of the reports furnished to Fortinet, or written representations from reporting persons that all reportable transaction were reported, Fortinet believes that during the fiscal year ended December 31, 2015,2017, Fortinet’s directors, certain officers and greater than ten percent owners timely filed all reports they were required to file under Section 16(a), except for a late Form 4 filed by Keith Jensen, Fortinet’s Chief Accounting Officer, to report an acquisition of 5,000 RSUs.

.

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​

OWNERSHIP OF SECURITIES

The following table sets forth certain information regarding the beneficial ownership of Fortinet’s common stock, as of March 31, 2016,2018, for the following:

•
each person (or group of affiliated persons) who is known by us to beneficially own more than 5% of the outstanding shares of our common stock;
​
•
each of our non-employee directors and nominees;
​
•
each of our executive officers named in the Summary Compensation Table of this proxy statement; and
​
•
all directors and current executive officers of Fortinet as a group.

  
5% Stockholders, Directors, Director Nominees and Officers(1) Shares
Beneficially
Owned
(#)(2)		 Percentage
Beneficially
Owned
(%)(2)
5% Stockholders:
          
BlackRock, Inc.(3)  11,106,678   6.5 
The Vanguard Group(4)  10,179,640   6.0 
Non-Employee Directors and Nominees:
          
Ming Hsieh(5)  18,974   * 
Gary Locke  —   — 
William H. Neukom(6)  22,211   * 
Christopher B. Paisley(7)  93,648   * 
Judith Sim  —   — 
Named Executive Officers:
          
Ken Xie(8)  14,324,876   8.3 
Michael Xie(9)  13,704,542   8.0 
Andrew Del Matto(10)  28,492   * 
John Whittle(11)  65,928   * 
All directors and current executive officers as a group (9 persons)(12)  28,258,671   16.4 
​

*Represents less than 1% of the total.
(1)Unless otherwise indicated in the table, the address for each listed person is c/o Fortinet, Inc., 899 Kifer Road, Sunnyvale, California 94086.
(2)The number and percentage of shares beneficially owned is determined under rules of the SEC, and the information is not necessarily indicative of beneficial ownership for any other purpose. Under such rules, beneficial ownership includes any shares as to which the individual has sole or shared voting power or investment power and also any shares which the individual has the right to acquire within 60 days of March 31, 2016, through the exercise of any stock option or other right. Unless otherwise indicated in the footnotes, each person has sole voting and investment power (or shares such powers with his or her spouse) with respect to the shares shown as beneficially owned. Percentage beneficially owned is based on 171,587,272 shares of common stock outstanding on March 31, 2016.
(3)Based solely on information reported by BlackRock, Inc. (“BlackRock”) on Schedule 13G/A filed with the SEC on February 10, 2016. BlackRock reported beneficial ownership of 11,106,678 shares, including 10,284,313 shares over which it has sole voting power and 11,106,678 shares over which it has sole dispositive power. The address of BlackRock is 55 East 52nd Street, New York, New York 10022.
(4)Based solely on information reported by The Vanguard Group (“Vanguard”) on Schedule 13G/A filed with the SEC on February 10, 2016. Vanguard reported beneficial ownership of 10,179,640 shares, including 143,161 shares over which it has sole voting power and 10,025,779 shares over which it has sole dispositive power. The address of Vanguard is 100 Vanguard Boulevard, Malvern, Pennsylvania 19355.
5% Stockholders, Directors, Director Nominees and Officers(1)
​​
Shares
Beneficially
Owned
(#)(2)
​​
Percentage
Beneficially
Owned
(%)(2)
​
5% Stockholders:​​​​​​​​​​​​​
BlackRock, Inc.(3)
​​​​13,793,707​​​​​8.2​​
The Vanguard Group(4)
​​​​12,596,781​​​​​7.5​​
Non-Employee Directors and Nominees:​​​​​​​​​​​​​
Peter D. Cohen​​​​467​​​​​*​​
Ming Hsieh(5)
​​​​662​​​​​*​​
Gary Locke(6)
​​​​17,500​​​​​*​​
William H. Neukom(7)
​​​​40,268​​​​​*​​
Christopher B. Paisley(8)
​​​​72,268​​​​​*​​
Judith Sim(9)
​​​​18,750​​​​​*​​
Named Executive Officers:​​​​​​​​​​​​​
Ken Xie(10)
​​​​14,895,044​​​​​8.9​​
Michael Xie(11)
​​​​14,626,671​​​​​8.7​​
Andrew Del Matto(12)
​​​​56,587​​​​​*​​
John Whittle(13)
​​​​24,933​​​​​*​​
All directors and current executive officers as a group (10 persons)(14)
​​​​29,714,968​​​​​17.7​​
​
*
Represents less than 1% of the total.

​

(1)
Unless otherwise indicated in the table, the address for each listed person is c/o Fortinet, Inc., 899 Kifer Road, Sunnyvale, California 94086.
​
(2)
The number and percentage of shares beneficially owned is determined under rules of the SEC, and the information is not necessarily indicative of beneficial ownership for any other purpose. Under such rules, beneficial ownership includes any shares as to which the individual has sole or shared voting power or investment power and also any shares which the individual has the right to acquire within 60 days of March 31, 2018, through the exercise of any stock option or other right. Unless otherwise indicated in the footnotes, each person has sole voting and investment power (or shares such powers with such person’s spouse) with respect to the shares shown as beneficially owned. Percentage beneficially owned is based on 168,027,717 shares of common stock outstanding on March 31, 2018.
​
(3)
Based solely on information reported by BlackRock, Inc. (“BlackRock”) on Schedule 13G/A filed with the SEC on January 25, 2018. BlackRock reported beneficial ownership of 13,793,707 shares, including 12,900,164 shares over which it has sole voting power and 13,793,707 shares over which it has sole dispositive power. The address of BlackRock is 55 East 52nd Street, New York, New York 10022.
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(5)Includes (i) 17,393 shares held of record by Mr. Hsieh; and (ii) 1,581 shares issuable upon the settlement of RSUs that will vest within 60 days of March 31, 2016.
(6)Includes (i) 20,299 shares held of record by Mr. Neukom; and (ii) 1,912 shares issuable upon the settlement of RSUs that will vest within 60 days of March 31, 2016.
(7)Includes (i) 53,674 shares held of record by Mr. Paisley; (ii) 39,000 shares issuable upon exercise of options exercisable within 60 days of March 31, 2016; and (iii) 974 shares issuable upon the settlement of RSUs that will vest within 60 days of March 31, 2016.
(8)Includes (i) 12,767,127 shares held of record by Mr. Ken Xie; and (ii) 1,199,000 shares held of record by the Xie Foundation, a non-profit entity for which Mr. Ken Xie serves as co-president and a director. Mr. Ken Xie has no pecuniary interest in and disclaims beneficial ownership of the shares held by the Xie Foundation. Also includes (i) 330,000 shares issuable upon exercise of options exercisable within 60 days of March 31, 2016; and (ii) 28,749 shares issuable upon the settlement of RSUs that will vest within 60 days of March 31, 2016. Does not include up to 40,000 shares underlying PSUs held by Mr. Ken Xie that are subject to vesting within 60 days of March 31, 2016 to the extent that performance objectives are achieved.
(9)Includes (i) 6,482,000 shares held of record by Mr. Michael Xie; (ii) 754,866 shares held by the K.A. Family Trust dated May 3, 2010, for which Mr. Michael Xie serves as a trustee; (iii) 462,488 shares held by The K.A. Children’s Trust dated February 9, 2011, for which Mr. Michael Xie serves as a trustee; (iv) 2,251,323 shares held by the 2014 Michael Xie Grantor Retained Annuity Trust dated March 6, 2014, for which Mr. Michael Xie serves as a trustee; (v) 2,251,323 shares held by the 2014 Danke Wu Grantor Retained Annuity Trust dated March 6, 2014, for which Mr. Michael Xie serves as a trustee; and (vi) 1,199,000 shares held by the Xie Foundation, a non-profit entity for which Mr. Michael Xie serves as co-president and a director. Mr. Michael Xie has no pecuniary interest in and disclaims beneficial ownership of the shares held by the Xie Foundation. Also includes (i) 280,000 shares issuable upon exercise of options exercisable within 60 days of March 31, 2016; and (ii) 23,542 shares issuable upon the settlement of RSUs that will vest within 60 days of March 31, 2016. Does not include up to 30,000 shares underlying PSUs held by Mr. Michael Xie that are subject to vesting within 60 days of March 31, 2016 to the extent that performance objectives are achieved.
(10)Includes (i) 19,117 shares held of record by Mr. Del Matto; and (ii) 9,375 shares issuable upon the settlement of RSUs that will vest within 60 days of March 31, 2016. Does not include up to 20,000 shares underlying PSUs held by Mr. Del Matto that are subject to vesting within 60 days of March 31, 2016 to the extent that performance objectives are achieved.
(11)Includes (i) 6,241 shares held of record by Mr. Whittle; (ii) 40,000 shares issuable upon exercise of options exercisable within 60 days of March 31, 2016; and (iii) 19,687 shares issuable upon the settlement of RSUs that will vest within 60 days of March 31, 2016. Does not include up to 20,000 shares underlying PSUs held by Mr. Whittle that are subject to vesting within 60 days of March 31, 2016 to the extent that performance objectives are achieved.
(12)Includes (i) 19,365,851 shares held of record by the current directors and executive officers; (ii) 689,000 shares issuable upon exercise of options held by the current directors and executive officers that are exercisable within 60 days of March 31, 2016; and (iii) 85,820 shares issuable upon the settlement of RSUs held by the current directors and executive officers that will vest within 60 days of March 31, 2016. Does not include up to 110,000 shares underlying PSUs held by the current directors and executive officers that are subject to vesting within 60 days of March 31, 2016 to the extent that performance objectives are achieved.
(4)
Based solely on information reported by The Vanguard Group (“Vanguard”) on Schedule 13G/A filed with the SEC on February 9, 2018. Vanguard reported beneficial ownership of 12,596,781 shares, including 115,942 shares over which it has sole voting power and 12,464,938 shares over which it has sole dispositive power. The address of Vanguard is 100 Vanguard Boulevard, Malvern, Pennsylvania 19355.

​

(5)
Includes (i) 331 shares held of record by Mr. Hsieh; and (ii) 331 shares issuable upon the settlement of RSUs held by Mr. Hsieh that will vest within 60 days of March 31, 2018.
​
(6)
Includes (i) 16,250 shares held of record by Mr. Locke; and (ii) 1,250 shares issuable upon the settlement of RSUs held by Mr. Locke that will vest within 60 days of March 31, 2018.
​
(7)
Includes (i) 39,937 shares held of record by Mr. Neukom; and (ii) 331 shares issuable upon the settlement of RSUs held by Mr. Neukom that will vest within 60 days of March 31, 2018.
​
(8)
Includes (i) 68,937 shares held of record by Mr. Paisley; (ii) 3,000 shares issuable upon the exercise of stock options held by Mr. Paisley that are exercisable within 60 days of March 31, 2018; and (iii) 331 shares issuable upon the settlement of RSUs held by Mr. Paisley that will vest within 60 days of March 31, 2018.
​
(9)
Includes (i) 17,500 shares held of record by Ms. Sim; and (ii) 1,250 shares issuable upon the settlement of RSUs held by Ms. Sim that will vest within 60 days of March 31, 2018.
​
(10)
Includes (i) 12,508,811 shares held of record by Mr. Ken Xie; and (ii) 2,183,110 shares held by the Xie Foundation, a non-profit entity for which Mr. Ken Xie serves as co-president and a director. Mr. Ken Xie has no pecuniary interest in and disclaims beneficial ownership of the shares held by the Xie Foundation. Also includes (i) 194,998 shares issuable upon the exercise of stock options held by Mr. Ken Xie that are exercisable within 60 days of March 31, 2018; and (ii) 8,125 shares issuable upon the settlement of RSUs that will vest within 60 days of March 31, 2018.
​
(11)
Includes (i) 6,692,000 shares held of record by Mr. Michael Xie; (ii) 1,991,686 shares held by the K.A. Family Trust dated May 3, 2010, for which Mr. Michael Xie serves as a trustee; (iii) 3,708,314 shares held by the K.A. Children’s Trust dated February 9, 2011, for which Mr. Michael Xie serves as a trustee; and (iv) 2,183,110 shares held by the Xie Foundation, a non-profit entity for which Mr. Michael Xie serves as co-president and a director. Mr. Michael Xie has no pecuniary interest in and disclaims beneficial ownership of the shares held by the Xie Foundation. Also includes (i) 44,061 shares issuable upon the exercise of stock options held by Mr. Michael Xie that are exercisable within 60 days of March 31, 2018; and (ii) 7,500 shares issuable upon the settlement of RSUs that will vest within 60 days of March 31, 2018.
​
(12)
Mr. Del Matto resigned as our Chief Financial Officer in February 2018.
​
(13)
Includes (i) 8,684 shares held of record by Mr. Whittle; (ii) 10,624 shares issuable upon the exercise of stock options held by Mr. Whittle that are exercisable within 60 days of March 31, 2018; and (iii) 5,625 shares issuable upon the settlement of RSUs that will vest within 60 days of March 31, 2018.
​
(14)
Includes (i) 29,425,732 shares held by the current directors and executive officers; (ii) 260,182 shares issuable upon the exercise of stock options held by the current directors and executive officers that are exercisable within 60 days of March 31, 2018; and (iii) 29,054 shares issuable upon the settlement of RSUs held by the current directors and executive officers that will vest within 60 days of March 31, 2018.
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AUDIT COMMITTEE REPORT

The Audit Committee assists the Board of Directors in fulfilling its responsibilities for oversight of the integrity of Fortinet’s financial statements, our internal accounting and financial controls, our compliance with legal and regulatory requirements and the qualifications, independence and performance of our independent registered public accounting firm.

The management of Fortinet is responsible for establishing and maintaining internal controls and for preparing Fortinet’s consolidated financial statements. The independent registered public accounting firm is responsible for auditing the financial statements. It is the responsibility of the Audit Committee to oversee these activities.

The Audit Committee has:

•
Reviewed and discussed the audited financial statements with Fortinet management and with Deloitte & Touche LLP, Fortinet’s independent registered public accounting firm;
​
•
Discussed with Deloitte & Touche LLP the matters required to be discussed by the Auditing Standard No. 161301 adopted by the Public Company Accounting Oversight Board regarding “Communication with Audit Committees”; and
​
•
Received the written disclosures and the letter from Deloitte & Touche LLP required by applicable requirements of the Public Company Accounting Oversight Board regarding Deloitte & Touche LLP’s communications with the Audit Committee concerning independence and has discussed with Deloitte & Touche LLP its independence.

​
Based upon these discussions and review, the Audit Committee recommended to the Board of Directors that the audited financial statements be included in Fortinet’s Annual Report on Form 10-K for the fiscal year ended December 31, 20152017 for filing with the United States Securities and Exchange Commission.

Respectfully submitted by the members of the Audit Committee of the Board of Directors

Christopher B. Paisley (Chairman)
Ming Hsieh
Judith Sim


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OTHER MATTERS

Fortinet knows of no other matters to be submitted at the 20162018 Annual Meeting. If any other matters properly come before the 20162018 Annual Meeting, it is the intention of the persons named in the proxy to vote the shares they represent as the Board of Directors may recommend. Discretionary authority with respect to such other matters is granted by a properly submitted proxy.

It is important that your shares be represented at the 20162018 Annual Meeting, regardless of the number of shares that you hold. You are, therefore, urged to vote as instructed in the Notice, via the Internetinternet or by telephone as promptly as possible to ensure your vote is recorded.

THE BOARD OF DIRECTORS

Sunnyvale, California
April 29, 2016

May 11, 2018

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APPENDIX A

PROPOSED RESTATED CERTIFICATE

* * * * *
FORTINET, INC.
AMENDED AND RESTATED CERTIFICATE OF INCORPORATION
Fortinet, Inc., a corporation organized and existing under the laws of the State of Delaware, hereby certifies as follows:
A.
That the name of the Corporationcorporation is Fortinet, Inc. and that this corporation was originally incorporated pursuant to the General Corporation Law on November 28, 2000, under the name “Appligation, Inc.” changed its name to “ApSecure, Inc.” pursuant to a Certificate of Amendment of Certificate of Incorporation filed on December 12, 2000, changed its name to “FortiNet, Inc.” pursuant to a Certificate of Amendment of Certificate of Incorporation filed on December 6, 2001, and subsequently changed its name of  “Fortinet, Inc.” pursuant to an Amended and Restated Certificate of Incorporation filed on August 15, 2003.
​
B.
The Corporationcorporation filed an Amended and Restated Certificate of Incorporation with the Secretary of State of the State of Delaware on May 29, 2001, May 30, 2002 and August 1, 2003, and filed a Certificate of Amendment of Certificate of Incorporation on March 12, 2008 and filed an Amended and Restated Certificate of Incorporation on November 23, 2009.
​
C.
This Amended and Restated Certificate of Incorporation was duly adopted by the corporation’s Board of Directors and stockholders in accordance with Sections 242 and 245 of the General Corporation Law of the State of Delaware (the “DGCL”), and has been duly approved by the written consent of the stockholders of the corporation in accordance with Section 228 of the DGCL.
​
D.
The Certificate of Incorporation of the corporation is hereby amended and restated in its entirety to read as follows:
​
ARTICLE I
The name of the corporation is Fortinet, Inc.
ARTICLE II
The address of the corporation’s registered office in the State of Delaware is 2711 Centerville Road, Suite 400, in the City of Wilmington 19808, County of New Castle. The name of its registered agent at such address is Corporation Services Company.
ARTICLE III
The purpose of the corporation is to engage in any lawful act or activity for which corporations may be organized under the DGCL.
ARTICLE IV
The corporation shall have authority to issue shares as follows:
300,000,000 shares of Common Stock, par value $0.001 per share. Each share of Common Stock shall entitle the holder thereof to one (1) vote on each matter submitted to a vote at a meeting of stockholders.
10,000,000 shares of Preferred Stock, par value $0.001 per share, which may be issued from time to time in one or more series pursuant to a resolution or resolutions providing for such issue duly adopted by the Board of Directors (authority to do so being hereby expressly vested in the Board of Directors). The Board of Directors is further authorized, subject to limitations prescribed by law, to fix by resolution or
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resolutions the designations, powers, preferences and rights, and the qualifications, limitations or restrictions thereof, of any wholly unissued series of Preferred Stock, including without limitation authority to fix by resolution or resolutions the dividend rights, dividend rate, conversion rights, voting rights, rights and terms of redemption (including sinking fund provisions), redemption price or prices, and liquidation preferences of any such series, and the number of shares constituting any such series and the designation thereof, or any of the foregoing.
The Board of Directors is further authorized to increase (but not above the total number of authorized shares of the class) or decrease (but not below the number of shares of any such series then outstanding) the number of shares of any series, the number of which was fixed by it, subsequent to the issuance of shares of such series then outstanding, subject to the powers, preferences and rights, and the qualifications, limitations and restrictions thereof stated in thethis Certificate of Incorporation or the resolution of the Board of Directors originally fixing the number of shares of such series. If the number of shares of any series is so decreased, then the shares constituting such decrease shall resume the status which they had prior to the adoption of the resolution originally fixing the number of shares of such series.
ARTICLE V
The number of directors that constitutes the entire Board of Directors of the corporation shall be fixed by, or in the manner provided in, the Bylaws of the corporation.
AtSubject to the provisions of this Certificate of Incorporation relating to directors elected by the holders of one or more series of Preferred Stock, voting as a separate series or with one or more other series of Preferred Stock, at each annual meeting of stockholders, directors of the corporation shall be elected to hold office until the expiration of the term for which they are elected and until their successors have been duly elected and qualified or until their earlier resignation or removal; except that if any such election shall not be so held, such election shall take place at a stockholders’ meeting called and held in accordance with the DGCL. Effective upon the effective date of the corporation’s initial public offering (the “Effective Date”), the directors of the corporation shall be divided into three classes as nearly equal in size as is practicable, hereby designated Class I, Class II and Class III. The Board of Directors may assign members of the Board of Directors already in office to such classes at the time such classification becomes effective. The term of office of the initial Class I directors shall expire at the first regularly-scheduled annual meeting of the stockholders following the Effective Date, the term of office of the initial Class II directors shall expire at the second annual meeting of the stockholders following the Effective Date and the term of office of the initial Class III directors shall expire at the third annual meeting of the stockholders following the Effective Date. At each annual meeting of stockholders, commencing with the first regularly-scheduledcommencing with the 2018 annual meeting of stockholders following the Effective Date, each of the successors elected to replace the directors of a Class whose term shall have expired at such annual meeting shall be elected to hold office until the third annual meeting next succeeding his or her election and until his or her respective successor shall have been duly elected and qualified. Notwithstanding, directors of the corporation other than those in the 2019 Class and 2020 Class (each as defined below) shall be elected for a term of one year, expiring at the next succeeding annual meeting of stockholders. Each director of the corporation who was elected at the 2016 annual meeting of stockholders for a three-year term expiring in 2019 (the “2019 Class”), and each director of the corporation who was elected at the 2017 annual meeting of stockholders for a three-year term expiring in 2020 (the “2020 Class”), including any person appointed to fill any vacancy occurring with respect to any director in the 2019 Class or the 2020 Class (each of whom shall be deemed to be a member of the class of directors in which the vacancy occurred), shall continue to hold office until the end of the term for which such director was elected or appointed, as applicable. Subject to the foregoing provisions of this Articleprovisions of this Certificate of Incorporation relating to directors elected by the holders of one or more series of Preferred Stock, voting as a separate series or with one or more other series of Preferred Stock, (a) commencing with the 2019 annual meeting of stockholders, all directors of the corporation other than those in the 2020 Class will be elected for a term of one year, and (b) commencing with the 2020 annual meeting of stockholders, all directors of the corporation will be elected for a term of one-year. In all cases, each director shall serve until his or hersuch director’s successor ishas been duly elected and qualified or until his or hersuch director’s earlier death, resignation, or removal. If the number of directors is hereafter changed, any newly created directorships or decrease in directorships shall be so apportioned among the classes as to make all classes as nearly equal in number as is practicable,
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provided that noNo decrease in the number of directors constituting the Board of Directors shall shorten the term of any incumbent director.Any director may be removed from office by the stockholders of the corporation only for cause. Vacancies occurring on the Board of Directors for any reason and newly created directorships resulting from an increase in the authorized number of directors may be filled only by vote of a majority of the remaining members of the Board of Directors, although less than a quorum, or by a sole remaining director, at any meeting of the Board of Directors. A person so elected by the Board of Directors to fill a vacancy or newly created directorship shall hold office until the next election of the class for which such director shall have been chosen and until his or her successor shall be duly elected and qualified.
Subject to the provisions of this Certificate of Incorporation relating to directors elected by the holders of one or more series of Preferred Stock, voting as a separate series or with one or more other series of Preferred Stock, except as otherwise provided by law, each director serving in a class of directors for a term expiring at the third annual meeting of stockholders following the election of such class may be removed only for cause by the affirmative vote of the holders of a majority of the voting power of all then outstanding shares of capital stock of the corporation entitled to vote generally in the election of directors, and all other directors may be removed with or without cause by the affirmative vote of the holders of a majority of the voting power of all then outstanding shares of capital stock of the corporation entitled to vote generally in the election of directors.
ARTICLE VI
In furtherance and not in limitation of the powers conferred by statute, the Board of Directors of the corporation is expressly authorized to adopt, amend or repeal the Bylaws of the corporation.
ARTICLE VII
Elections of directors need not be by written ballot unless the Bylaws of the corporation shall so provide.
ARTICLE VIII
No action shall be taken by the stockholders of the corporation except at an annual or special meeting of the stockholders called in accordance with the Bylaws, and no action shall be taken by the stockholders by written consent.
ARTICLE IX
To the fullest extent permitted by the DGCL, as it presently exists or may hereafter be amended from time to time, a director of the corporation shall not be personally liable to the corporation or its stockholders for monetary damages for breach of fiduciary duty as a director. If the DGCL is amended to authorize corporate action further eliminating or limiting the personal liability of directors, then the liability of a director of the corporation shall be eliminated or limited to the fullest extent permitted by the DGCL, as so amended.
The corporation shall indemnify, to the fullest extent permitted by applicable law, any director or officer of the corporation who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative (a “Proceeding”) by reason of the fact that he or she is or was a director, officer, employee or agent of the corporation or is or was serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans, against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by such person in connection with any such Proceeding. The corporation shall be required to indemnify a person in connection with a Proceeding initiated by such person only if the Proceeding was authorized by the Board.
The corporation shall have the power to indemnify, to the extent permitted by the DGCL, as it presently exists or may hereafter be amended from time to time, any employee or agent of the corporation who was or is a party or is threatened to be made a party to any Proceeding by reason of the fact that he or she is or was a director, officer, employee or agent of the corporation or is or was serving at the request of
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the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans, against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by such person in connection with any such Proceeding.
Neither any amendment nor repeal of this Article IX, nor the adoption of any provision of this corporation’s Certificate of Incorporation inconsistent with this Article IX, shall eliminate or reduce the effect of this Article IX in respect of any matter occurring, or any cause of action, suit or proceeding accruing or arising or that, but for this Article IX, would accrue or arise, prior to such amendment, repeal or adoption of an inconsistent provision.
ARTICLE X
The corporation reserves the right to amend, alter, change or repeal any provision contained in this Certificate of Incorporation (including any rights, preferences or other designations of Preferred Stock), in the manner now or hereafter prescribed by this Certificate of Incorporation and the DGCL; and, except as set forth in Article IX, all rights, preferences and privileges herein conferred upon stockholders, directors or any other persons by and pursuant to this Certificate of Incorporation in its present form or as hereafter amended are granted subject to the right reserved in this Article X, provided, however, that, notwithstanding any other provision of this Certificate of Incorporation, and in addition to any other vote that may be required by law or any Preferred Stock, the affirmative vote of the holders of at least 662∕3% of the voting power of all then outstanding shares of capital stock of the Corporationcorporation entitled to vote generally in the election of directors, voting together as a single class, shall be required to amend, alter or repeal, or adopt any provision as part of this Certificate of Incorporation inconsistent with the purpose and intent of, Article V, Article VI, Article VIII or this Article X (including, without limitation, any such Article as renumbered as a result of any amendment, alteration, change, repeal or adoption of any other Article).
IN WITNESS WHEREOF, Fortinet, Inc. has caused this Amended and Restated Certificate of Incorporation to be signed by the President and Chief Executive Officer of the corporation on this 23rd[  ] day of November 2009June 2018.
By:
​
 Ken Xie
 Chief Executive Officer
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[MISSING IMAGE: tv493540_proxy1.jpg]
Using a black ink pen, mark your votes with an X as shown inthis example. Please do not write outside the designated areas. XFortinet, Inc.02UAMC1 U P X +Annual Meeting Proxy Card.C Authorized Signatures — This section must be completed for your vote to be counted. — Date and Sign BelowNOTE: Please sign as name appears hereon. Joint owners should each sign. When signing as attorney, executor, administrator, trustee or guardian, please give full title as such.Date (mm/dd/yyyy) — Please print date below. Signature 1 — Please keep signature within the box. Signature 2 — Please keep signature within the box.+Change of Address — Please print your new address below. Comments — Please print your comments below.B Non-Voting ItemsA Proposals — The Board of Directors Recommends a Vote “For” Proposals 1, 3 and 4, and “For” each of the Nominees listed inProposal 2.For Against Abstain3. To ratify the appointment of Deloitte & Touche LLP asFortinet’s independent registered accounting firm for thefiscal year ending December 31, 2018.For Against AbstainMeeting AttendanceMark the box to the rightif you plan to attend theAnnual Meeting.01 - Ken Xie 02 - Gary Locke2. ELECTION OF THREE DIRECTORSNominees: For Against For AgainstIMPORTANT ANNUAL MEETING INFORMATION4. Advisory vote to approve named executiveofficer compensation, as disclosed in theproxy statement.03 - Judith SimFor AgainstFor Against Abstain1. To adopt an Amended and Restated Certificate of Incorporationin order to declassify the Board of Directors and make otherrelated changes, as set forth in the proxy statement.IF YOU HAVE NOT VOTED VIA THE INTERNET OR TELEPHONE, FOLD ALONG THE PERFORATION, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE.Electronic Voting InstructionsAvailable 24 hours a day, 7 days a week!Instead of mailing your proxy, you may choose one of the votingmethods outlined below to vote your proxy.VALIDATION DETAILS ARE LOCATED BELOW IN THE TITLE BAR.Proxies submitted by the Internet or telephone must be received by11:59 p.m. Eastern Time, on June 21, 2018.Vote by Internet• Go to www.envisionreports.com/FTNT• Or scan the QR code with your smartphone• Follow the steps outlined on the secure websiteVote by telephone• Call toll free 1-800-652-VOTE (8683) within the USA, US territories &Canada on a touch tone telephone• Follow the instructions provided by the recorded message
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.Annual Meeting of Stockholders to be Held on June 22, 2018THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS OF FORTINET, INC.The undersigned hereby appoints Ken Xie and John Whittle, and each of them, with power to act without the other and with power of substitution,as proxies and attorneys-in-fact and hereby authorizes them to represent and vote, as provided on the other side, all the shares of Fortinet, Inc. commonstock which the undersigned is entitled to vote, and, in their discretion, to vote upon such other business as may properly come before the Annual Meetingof Stockholders of Fortinet, Inc. to be held June 22, 2018 or at any adjournment or postponement thereof, with all powers which the undersigned wouldpossess if present at the Annual Meeting.THIS PROXY WILL BE VOTED AS DIRECTED, OR IF NO DIRECTION IS INDICATED, WILL BE VOTED “FOR” PROPOSALS 1, 3 AND 4, AND “FOR”EACH OF THE NOMINEES LISTED IN PROPOSAL 2.(Continued and to be marked, dated and signed, on the other side)Proxy — FORTINET, INC.Important notice regarding the Internet availability of proxy materials for the2018 Annual Meeting of Stockholders.The Proxy Statement and the 2017 Annual Report are available at:http://www.envisionreports.com/FTNTIF YOU HAVE NOT VOTED VIA THE INTERNET OR TELEPHONE, FOLD ALONG THE PERFORATION, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE.