1990 E. Grand Avenue
El Segundo, CA 90245
(310) 482-5800

Dear Stockholder:

You are cordially invited to attend the 20152016 Annual Meeting of Stockholders of Stamps.com Inc. (the “Annual Meeting”) to be held at 10:00 a.m. Pacific Daylight Savings Time on Wednesday,Monday, June 17, 2015,13, 2016, at Stamps.com Inc., 1990 E. Grand Avenue, El Segundo, CA 90245.

Your vote at the Annual Meeting is important to us. At the Annual Meeting, you will be asked (i) to (i) elect two directors,one director, (ii) to approve, on an advisory basis, our executive compensation, (iii) to approve the 20142016 Amendment to the Stamps.com Inc. 2010 Equity Incentive Plan, and (iv) to ratify the selection of our independent auditors for 2015.2016. The accompanying Notice of 20152016 Annual Meeting of Stockholders and proxy statement describes the matters to be presented at the Annual Meeting.

Our board of directors unanimously recommends that stockholders vote in favor of (i) the election of the nominated directors,director, (ii) the resolution approving, on an advisory basis, our executive compensation, (iii) the approval of the 20142016 Amendment to the Stamps.com Inc. 2010 Equity Incentive Plan, and (iv) the ratification of our independent auditors for 2015.2016.

Whether or not you plan to attend the Annual Meeting, please mark, sign, date and return your proxy card in the enclosed envelope as soon as possible. Your stock will be voted in accordance with the instructions you have given in your proxy card. Please note that if your stock is held by a bank, broker or other nominee, you must follow the instructions you receive to have your stock voted. You may attend the Annual Meeting and vote in person even if you have previously returned your proxy card.

Los Angeles, California
May 6, 20152016

1990 E. Grand Avenue
El Segundo, CA 90245
(310) 482-5800

NOTICE OF 20152016 ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD JUNE 17, 201513, 2016

TO THE STOCKHOLDERS OF STAMPS.COM INC.:

NOTICE IS HEREBY GIVEN that the 20152016 Annual Meeting of Stockholders (the “Annual Meeting”) of Stamps.com Inc., a Delaware corporation, will be held on June 17, 2015,13, 2016, beginning at 10:00 a.m. Pacific Daylight Savings Time at Stamps.com Inc., 1990 E. Grand Avenue, El Segundo, CA 90245, for the following purposes:

The foregoing matters are described in more detail in the enclosed proxy statement. Our board of directors has fixed the close of business on April 17, 201518, 2016 as the record date for the determination of our stockholders entitled to notice of, and to vote at, the Annual Meeting and any and all postponements or adjournments of the thereof. Only those stockholders of record as of the close of business on that date are entitled to notice of and to vote at the Annual Meeting. Our stock transfer books will remain open between the record date and the date of the meeting. A list of stockholders entitled to vote at the Annual Meeting will be available for inspection by any of our stockholders, for any purpose germane to the meeting, at the Annual Meeting and during ordinary business hours at our executive offices for a period of ten days prior to the Annual Meeting.

All stockholders are cordially invited to attend the Annual Meeting in person. Whether or not you plan to attend, please sign and return the enclosed proxy card as promptly as possible in the envelope enclosed for your convenience. Should you receive more than one proxy card because your shares are registered in different names and addresses, each proxy should be signed and returned to assure that all your shares will be voted. You may revoke your proxy at any time before the Annual Meeting. If you attend the Annual Meeting and vote by ballot, your proxy will be revoked automatically and only your vote at the Annual Meeting will be counted.

YOUR VOTE IS VERY IMPORTANT, REGARDLESS OF THE NUMBER OF SHARES YOU OWN. PLEASE READ THE ATTACHED PROXY STATEMENT CAREFULLY, COMPLETE, SIGN AND DATE THE ENCLOSED PROXY CARD AS PROMPTLY AS POSSIBLE AND RETURN IT IN THE ENCLOSED ENVELOPE.

Los Angeles, California
May 6, 20152016

Important Notice Regarding Availability of Proxy Materials
for the 20152016 Annual Meeting of Stockholders to be Held on June 17, 201513, 2016

Our proxy statement and annual report on Form 10-K are available on the Internet at http://investor.stamps.com/sec.cfm.sec.cfm.

1990 E. Grand Avenue
El Segundo, CA 90245

PROXY STATEMENT
FOR THE ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD ON JUNE 17, 201513, 2016

GENERAL INFORMATION

General

The enclosed proxy is solicited on behalf of the board of directors (our “Board”) of Stamps.com Inc. (our “Board”), for use at our Annual Meeting of Stockholders to be held on June 17, 201513, 2016 and at any and all adjournments or postponements thereof (the “Annual Meeting”). The Annual Meeting will begin at 10:00 a.m. Pacific Daylight Savings Time at Stamps.com Inc., 1990 E. Grand Avenue, El Segundo, CA 90245. This proxy statement and the accompanying proxy card are first being mailed to stockholders on or about May 6, 2015.2016.

Voting and Proxies

Only holders of record of our common stock at the close of business on April 17, 201518, 2016 (the “Record Date”) are entitled to notice of and to vote at the Annual Meeting. As of the Record Date, 16,363,29217,456,552 shares of our common stock were issued and outstanding. Holders are entitled to one vote at the Annual Meeting for each share of common stock held that was issued and outstanding as of the Record Date. A majority of the outstanding shares of our common stock, present in person or represented by proxy, constitutes a quorum for the transaction of business at the Annual Meeting.

All votes will be tabulated by the inspector of election appointed for the meeting, who will separately tabulate affirmative and negative votes, abstentions and broker non-votes. Abstentions and broker non-votes are counted as present for purposes of determining the presence or absence of a quorum for the transaction of business.

If you properly sign and return the enclosed form of proxy, your shares represented will be voted at the Annual Meeting in accordance with your specified instructions. If you do not specify how your shares are to be voted, your shares will be voted (i) FOR the election of the director proposed by our Board, (ii) FOR the resolution approving, on an advisory basis, our executive compensation, (iii) FOR the approval of the 20142016 Amendment to Stamps.com Inc. 2010 Equity Incentive Plan, and (iv) FOR the ratification of our independent auditors for 2015.2016.

If your shares of common stock are held by a bank, broker or other nominee, please follow the instructions you receive from your bank, broker or other nominee to have your shares of common stock voted. If your shares are held by a broker, then the broker will ask you how you want your shares to be voted. If you give the broker instructions, then your shares will be voted as you direct. If you do not give instructions, then for the ratification of the independent auditors, the broker may vote your shares in its discretion, but for the election of the directors,director, the approval of our executive compensation, and the 20142016 Amendment to the Stamps.com Inc. 2010 Equity Incentive Plan, the broker may not be entitled to vote your shares at all.

You may revoke or change your proxy at any time before the Annual Meeting by filing with our Secretarysecretary at 1990 E. Grand Avenue, El Segundo, CA 90245, a notice of revocation or another signed proxy with a later date. You may also revoke your proxy by attending the Annual Meeting and voting in person.

Solicitation

We will bear the entire cost of solicitation, including the preparation, assembly, printing and mailing of this proxy statement, the proxy card and any additional solicitation materials furnished to our stockholders. Copies of solicitation materials will be furnished to brokerage houses, fiduciaries and custodians holding shares in their

names that are beneficially owned by others so that they may forward this solicitation material to such beneficial owners. In addition, we may reimburse such persons for costs incurred in forwarding the solicitation materials to such beneficial owners. The original solicitation of proxies by mail may be supplemented by a solicitation by telephone, e-mail or other means by our directors, officers or employees. No additional compensation will be paid to these individuals for soliciting. We intend to post this proxy statement and our 20142015 Annual Report on Form 10-K on our website (http:(http://investor.stamps.com/sec.cfm)sec.cfm) for public review. Except as described above, we do not presently intend to solicit proxies other than by mail. We have no present plans to hire special employees or paid solicitors to assistingassist in obtaining proxies, but reserve the option to do so. For our 2015 Annual Meeting last year, we initially had no plans to hire solicitors to assist in obtaining proxies. However, we ultimately engaged a company to provide advisory and consulting services and to act as proxy solicitor in connection with such meeting, at a cost of approximately $25,000 plus expenses. If we do hire solicitors for the 2016 Annual Meeting, the arrangement may or may not be similar to what we did last year.

Annual Meeting Attendance

Attendance and voting at the Annual Meeting is limited to stockholders at the close of business on the Record Date and our invitees. No cameras, recording equipment or other electronic devices will be permitted in the Annual Meeting. In order to be admitted to the Annual Meeting, if you are (i) a stockholder of record, you must bring a valid, government issued photo identification and (ii) if you are a beneficial stockholder you must bring an account statement or letter from your broker or bank showing that you owned stock as of the Record Date and a valid, government issued photo identification. We will not be required to admit any attendees that do not show the documentation specified in the preceding sentence.

Deadline for Receipt of Stockholder Proposals

Under Securities and Exchange Commission (“SEC”) Rule 14a-8, proposals of stockholders that are intended to be presented by such stockholders at our 20162017 annual meeting of stockholders and included in the proxy statement and form of proxy relating to that meeting must be received no later than January 2, 2016.3, 2017. Stockholders wishing to submit proposals for the 20162017 annual meeting of stockholders outside of Rule 14a-8 may do so if the proposal was timely received by us under our bylaws, as calculated below. In addition, subject to SEC Rule 14a-4(c), the proxy solicited by our Board for the 20162017 annual meeting of stockholders will confer discretionary authority to vote on any stockholder proposal presented at that meeting if notice of the proposal was not timely received by us under our bylaws, as calculated below. Our bylaws provide that to be timely, notice of a proposal must be delivered to or mailed and received at our principal executive offices not less than 120 days before the date of the annual meeting.

PROPOSAL ONE: ELECTION OF DIRECTORSDIRECTOR

General

Our certificate of incorporation provides for a classified board of directors consisting of three classes of directors with staggered three-year terms, with each class consisting, as nearly as possible, of one-third of the total number of directors. Our Board currently consists of four members.

Our four member Board is currently divided into two Class I directors, one Class II director and one Class III director.

Class I,II, the class whose term of office expires at the Annual Meeting, currently consists of two directors.one director. The directorsdirector elected to this class will serve for a term of three years, beginning on the date of the Annual Meeting and expiring at the 20182019 annual meeting of stockholders or until their successors havehis successor has been duly elected and qualified. The nomineesnominee listed below areis currently directors.a director.

The nomineesnominee for election havehas agreed to serve if elected, and management has no reason to believe that the nominee will be unavailable to serve. If a nominee is unable or declines to serve as a director at the time of the Annual Meeting, the proxies will be voted for any substitute nominee who may be designated by our Board to fill the vacancy.

Directors are elected by a plurality of the votes cast on the election of directors, which means that the nominees with the highest number of votes cast in their favor are elected as directors up to the maximum number of directors to be elected. Accordingly, an abstention or broker non-vote will have no effect on the outcome of this election. You may not cumulate votes in the election of directors.director.

Unless otherwise instructed, the proxy holders will vote the proxies received by them FOR the nomineesnominee named below.

Directors

The following table sets forth certain information regarding our current directors as of April 15, 2015:2016:

Each of our directors, including our current nominees,nominee, was nominated based on the assessment of our Nominating Committee and our Board that he has demonstrated: relevant business experience, excellent decision-making ability, good judgment, and personal integrity and reputation. Our Board consists of, and seeks to continue to include, persons whose diversity of skills, experience and background are complementary to those of our other directors.

NomineesNominee For Term Ending at the 2018 Annual Meeting of Stockholders

G. Bradford Jones, has been one of our directors since 1998. Mr. Jones is currently a General Partner at Brentwood Venture Capital, which he joined in 1981, and an Advisory Partner of Redpoint Ventures, a firm he co-founded in 1999. Mr. Jones currently serves on the board of directors of several privately-held companies. Mr. Jones received his B.A. in Chemistry from Harvard University, his M.A. in Physics from Harvard University and his J.D./M.B.A. from Stanford University. Mr. Jones' extensive experience with and knowledge of the technology industry, business management, investment management, finance and accounting, and his experience serving on the boards of directors of other companies are invaluable to our Board’s discussions regarding business strategy, accounting issues, technology issues, financial issues, and share repurchase strategies.

M.S. in Aeronautics from the California Institute of Technology, his Ph.D. in Astrodynamics and Control from University of California, Los Angeles, and his J.D. from the University of West Los Angeles. Mr. Ananda was instrumental in the founding of our company and has extensive experience with the technology and industry of our PC Postage business, and that experience has proven invaluable for our Board.

Continuing Director Whose Term Expires at the 2017 Annual Meeting of Stockholders

Kenneth McBride has served as the Chief Executive Officerour chief executive officer and a boardBoard member of Stamps.com Inc. since August 2001. Stamps.com is a Nasdaq-traded provider of Internet-based mailing and shipping software for small businesses, eCommerce users, and large enterprises. Beginning in 1999, Mr. McBride has held various positions at Stamps.com,Stamps.com: as President from 2001 until January 2012,2012; as Chief Financial Officerchief financial officer from August 2000 to January 2004,2004; and as Senior Directorsenior director and Vice Presidentvice president of Financefinance from 1999 to 2000. Mr. McBride has also been Chairmanchairman of the board of directors of Stamps.comour Board since January 2012. From August 2012 through January 2014, Mr. McBride served on the board of directors of LegalZoom.com, Inc., the leading provider of Internet-based legal services for small businesses and consumers, where he also served as the chairman of the audit committee, and as a member of the compensation committee. Mr. McBride currently serves on the board of directors of CafePress Inc., a recognized pioneer in the customized retail products industry. Mr. McBride holds a bachelor’s degree, with honors, and a master’s degree, in Electrical Engineering from Stanford University. Mr. McBride also holds an MBA from the Graduate School of Business at Stanford University.

Continuing Directors Whose Terms Expire at the 2018 Annual Meeting of Stockholders

G. Bradford Jones has been one of our directors since 1998. Mr. Jones is currently a general partner at Brentwood Venture Capital, which he joined in 1981, and an advisory partner of Redpoint Ventures, a firm he co-founded in 1999. Mr. Jones currently serves on the boards of directors of several privately held companies. Mr. Jones received his B.A. in Chemistry from Harvard University, his M.A. in Physics from Harvard University and his J.D./M.B.A. from Stanford University. Mr. Jones’ extensive experience with and knowledge of the technology industry, business management, investment management, finance and accounting, and his experience serving on the boards of directors of other companies are invaluable to our Board’s discussions regarding business strategy, accounting issues, technology issues, financial issues, and share repurchase strategies.

Lloyd I. Miller has been one of our directors since 2002. Mr. Miller is an independent investor and has served on numerous corporate boards of publicly traded companies. Mr. Miller currently serves as a director of American Banknote Corporation, a global supplier of secure documents, services and systems. Mr. Miller was also an observer to the board of directors of Crossroads Inc. and served as a non-board nominating committee chairman of Lexington Coal Company. Mr. Miller also served as a director of DDI Corp. in the last five years. He was a member of the Chicago Stock Exchange, Chicago Board of Trade, and traded actively on the floor of the Chicago Board of Trade from 1978 to 1992. Mr. Miller received his B.A. from Brown University. Mr. Miller’s extensive experience with and knowledge of business management, investment management, accounting, finance, and capital markets, and his experience serving on the boards of directors of other companies are invaluable to our Board’s discussions regarding business strategy, accounting issues, financial issues, cash management, and share repurchase strategies.

Recommendation of our Board

Our Board recommends that the stockholders vote “FOR” the election of the nomineesnominee listed above.

BOARD COMMITTEES AND MEETINGS AND CORPORATE GOVERNANCE

Board Committees and Meetings

Our Board held five meetings during 20142015 and acted by unanimous written consent on fourthree occasions. Each director attended or participated in 75% or more of the aggregate of (i) the total number of meetings of our Board and (ii) the total number of meetings held by all committees of our Board on which such director served during 2014.2015. Our Board members are not required to attend our annual meetings of stockholders, and no director, other than our CEO,chief executive officer, attended our annual meeting in 2014.2015. Our Board has a standing Audit Committee established in accordance with Section 3(a)(58)(A) of the Securities Exchange Act of 1934, a Compensation Committee and a Nominating Committee.

Audit Committee. The Audit Committee currently consists of three directors, Messrs. Ananda, Jones and Miller, and is primarily responsible for hiring our independent auditors, approving the services performed by our independent auditors and reviewing their reports regarding our accounting practices and systems of internal accounting controls. Mr. Jones serves as the chairman of theour Audit Committee. The Audit Committee acts pursuant to a written charter adopted by our Board, which is available on our website at http://investor.stamps.com/documentdisplay.cfm?DocumentID=1898.1898. All members of the Audit Committee are non-employee directors and are “independent” pursuant to the rules of The NASDAQ Stock Market and SEC rules. In addition, our Board has determined that each of Messrs. Jones and Miller is an “audit committee financial expert” as defined by applicable SEC rules. Our Audit Committee held fourfive meetings during 2014.2015.

Compensation Committee. The Compensation Committee currently consists of two directors, Messrs. Ananda and Miller. The Compensation Committee is primarily responsible for reviewing and approving our general compensation policies and setting compensation levels for our executive officers. Our Compensation Committee also has the authority to administer our employee stock purchase plan and our stock incentive plan and to grant awards under our stock incentive plan. All members of the Compensation Committee are non-employee directors and are “independent” pursuant to the rules of The NASDAQ Stock Market. The Compensation Committee acts pursuant to a written charter adopted by our Board, which is available on our website at http://investor.stamps.com/documentdisplay.cfm?DocumentID=1896.1896. The Compensation Committee will only delegate its authority to the extent consistent with our certificate of incorporation and bylaws and applicable laws, regulations and listing standards. No compensation consultant was engaged to provide advice or recommendations on our executive or director compensation for 2014.2015. The Compensation Committee held threetwo meetings and acted by unanimous written consent on fourteenthirteen occasions during 2014.2015.

Nominating Committee. The current members of our Nominating Committee are Messrs. Ananda, Jones and Miller. All members of the Nominating Committee are non-employee directors and are “independent” directors under the rules of The NASDAQ Stock Market. The Nominating Committee acts pursuant to a written charter adopted by our Board, which is available on our website at http://investor.stamps.com/documentdisplay.cfm?DocumentID=1894.1894. The Nominating Committee held one meeting during 2014.2015.

The responsibilities of the Nominating Committee include (i) screening and recommending to our Board qualified candidates for election or appointment to our Board; (ii) recommending the number of members that shall serve on our Board; (iii) evaluating and reviewing the independence of existing and prospective directors; and (iv) reviewing and reporting on additional corporate governance matters as directed by our Board.

Our Nominating Committee manages the process for evaluating current Board members at the time they are considered for re-nomination. After considering the appropriate skills and characteristics required on our Board, the current makeup of our Board, the results of the evaluations, and the wishes of our Board members to be re-nominated, our Nominating Committee recommends to our Board whether those individuals should be re-nominated. Our Nominating Committee also periodically reviews with our Board whether it believes our Board would benefit from adding aone or more new member(s),members, and if so, the appropriate skills and characteristics required for thedesired in such new member(s). If our Board determines that a new member would be beneficial, our Nominating Committee solicits and receives recommendations for candidates and manages the process for evaluating candidates. All potential candidates, regardless of their source (including candidates recommended by stockholders), are reviewed under the same process. Our Nominating Committee screens the available information about the potential candidates. Based on the results of the initial screening, interviews with viable candidates are scheduled with Nominating Committee members, other members of our Board and senior

members of management. Upon completion of these interviews and other due diligence, our Nominating Committee may recommend to our Board the election or nomination of a candidate.

We expect that candidates for independent directorsdirector will typically be found through recommendations from current directors. Our stockholders may also recommend director candidates by sending the candidate’s name, age, resume, amount of our stock beneficially owned and other information required in solicitations of proxies for the election of directors, to the Nominating Committee under the provisions set forth below for communication with our Board. To be timely, a recommendation must be delivered to or mailed and received not less than one-hundred twenty (120) days prior to our annual meeting at which directors are to be elected. No such suggestions from our stockholders were received in time for the Annual Meeting.

The Nominating Committee has no predefined minimum criteria for selecting director nominees, although it believes that all directors should share qualities such as business experience, excellent decision-making ability, good judgment, personal integrity and excellent reputation. In any given search, the Nominating Committee may also define particular characteristics for candidates to balance the overall skills and characteristics of our BoardsBoard and our perceived needs. However, during any search, the Nominating Committee reserves the right to modify its stated search criteria for exceptional candidates. Although the Nominating Committee does not have a formal policy with respect to diversity, the Nominating Committee endeavors to seek nominees representing diverse experience in policy-making positions in business and technology, and in areas that are relevant to our activities.

Compensation Committee Interlocks and Insider Participation.

The Compensation Committee currently consists of two directors, Messrs. Ananda and Miller. Neither of these individuals was one of our officers or employees during 20142015 or had any relationship with us requiring disclosure under Item 404 of Regulation S-K. None of our current executive officers has ever served as a member of the board of directors or the compensation committee of any other entity that has or has had one or more executive officers serving as a member of our Board or Compensation Committee.

Contacting the Board

Any stockholder who desires to contact our Board may do so by writing to the following address: Board of Directors, c/o Legal Department, Stamps.com Inc., 1990 E. Grand Avenue, El Segundo, CA 90245. Communications received are distributed to an independent Board member, as well as other members as appropriate, of our Board, as appropriate, depending on the facts and circumstances outlined in the communication received.

Director Independence

We are required to identify directors who are independent under standards defined by SEC rules governing proxy statement disclosures. Our Board has determined that, except for Mr. McBride, each of our directors qualifies as an independent director under the rules of The NASDAQ Stock Market.Market, the standard applied to us by such SEC rules. Mr. McBride is not independent because he serves as our Chief Executive Officer.chief executive officer.

Board Leadership Structure and Role in Risk Oversight

Our Board combined the role of Chairmanchairman and Chief Executive Officerchief executive officer effective January 13, 2012. Our Board believes that the Chief Executive Officerchief executive officer is best situated to serve as Chairmanchairman because he is the director most familiar with our business and industry and is therefore best able to identify the strategic priorities to be discussed by the Board. Our Board believes that combining the role of Chairmanchairman and Chief Executive Officerchief executive officer facilitates information flow between management and the Board and fosters strategic development and execution. Our Board has not appointed a lead independent director as all members of our Board take an active role in evaluating our risks and strategic direction. Each committee of our Board is responsible for evaluating certain risks and overseeing the management of such risks. The Compensation Committee is responsible for overseeing the management of risks relating to our executive compensation plans and arrangements. The Audit Committee oversees the process by which our senior management and the relevant departments assess and manage our exposure to, and management of, financial risks as well as potential conflicts of interest. The Nominating Committee manages risks associated with the independence of our Board. Our entire Board is regularly informed about these risks and oversees the management of these risks and regularly reviews information regarding our operations and finances as well as our strategic direction. Our Board’s role in risk oversight has not affected our Board’s determination that its leadership structure is most appropriate for our company.

Code of Ethics

We have adopted a written code of business and ethical conduct (our “Code of Ethics”) that applies to our principal executive officer, principal financial officer and principal accounting officer. Our Code of Ethics, which also applies to our directors and all of our officers and employees, can be found on our web site, at http://investor.stamps.com/documentdisplay.cfm?DocumentID=1897.1897. We intend to make all required disclosures concerning any amendments to, or waivers from, our Code of Ethics on our web site at http://investor.stamps.com/documentdisplay.cfm?DocumentID=1897.investor.stamps.com. Upon request to our secretary, we will provide a copy of our Code of Ethics to any person without charge.

DIRECTOR COMPENSATION

Summary of Compensation

Our Board independently reviewed compensation levels of other company boards in April 2014 and established our Board service compensation level at approximately the average level of 38 comparable publicly traded technology companies with revenue between $100 and $300 million and market cap over $400 million (as set forth on Annex A). Our Board expects to review its compensation as needed or as proposed by any director, but in any event at least every four years. Although our executive officers may provide background data in connection with this process, they are generally not involved in the decision on Board compensation except to the extent that Mr. McBride, our Chief Executive Officer,chief executive officer, is involved as a member of our Board.

The following summarizes our non-employee director compensation. Directors who are also our employees do not receive any additional compensation for Board service.

Cash Compensation. Prior to April 23, 2014, each of our non-employee directors received an annual retainer of $25,000, $1,400 for each Board meeting attended and $700 for each Audit Committee or Compensation Committee meeting attended. Additional annual retainers were paid for service on our Audit Committee or Compensation Committee as follows: the chairman of the Audit Committee received an additional $15,000; other members of the Audit Committee received an additional $5,000; the chairman of the Compensation Committee received an additional $8,000; and other members of the Compensation Committee received an additional $4,000. Directors were also reimbursed for all reasonable expenses incurred by them in attending Board and committee meetings.

On April 23, 2014, the Board approved new cash compensation levels that became effective beginning May 1, 2014. Each of our non-employee directors receives an annual retainer of $30,000, $1,400 for each Board meeting attended and $700 for each Board committee meeting attended. Additional annual retainers are paid for service on our Audit Committee or Compensation Committee as follows: the chairman of the Audit Committee receives an additional $15,000; other members of the Audit Committee receive an additional $5,000; the chairman of the Compensation Committee receives an additional $10,000; and other members of the Compensation Committee receive an additional $4,000. Directors continue to beare reimbursed for all reasonable expenses incurred by them in attending Board and committee meetings.

Option Grants. Each individual who joins our Board as a non-employee director and has not previously been one of our employees automatically receives, at the time of his or her initial election or appointment, an option to purchase 5,000 shares of our common stock. In addition, on the date of each annual meeting of stockholders, each individual who is to continue to serve as a non-employee Board member, whether or not that individual is standing for re-election at that particular annual meeting, automatically receives an option to purchase 5,000 shares of our common stock. Each grantoption granted to our non-employee directors vests immediately and has an exercise price per share equal to the fair market value per share of our common stock on the grant date and will have a maximum term of ten years. All non-employee directors received automatic option grants on June 11, 201417, 2015 for 5,000 shares each of our common stock at an exercise price per share of $34.03,$70.77, the fair market value per share of our common stock on the grant date.

Topic 718, Compensation—Stock Compensation (“ASC 718”). See Note 2 of our “Notes to Consolidated Financial Statements” in our annual report on Form 10-K filed with the Securities and Exchange Commission on February 29, 2016 for a discussion of assumptions we made in determining the amounts included in this column. For each director, the aggregate grant date fair value in this column is equal to the individual grant date fair value of the options to purchase 5,000 shares of common stock granted on June 17, 2015, as directors received only one grant of options during 2015.

PROPOSAL TWO: ADVISORY VOTE ON EXECUTIVE COMPENSATION

As required pursuant to Section 14A of the Securities Exchange Act of 1934, we are giving our stockholders the opportunity to vote, on an advisory basis, to approve our executive compensation. 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. In 2014,2015, our advisory vote on executive compensation was approved by approximately 90%70% percent of the votes cast. These results represented majority support for our named executive officer compensation. However, we continually strive to understand and respond to our stockholders’ opinions and concerns, including those held by the 30% of votes cast against executive compensation in 2015, regarding our executive compensation structure, and we have sought feedback from stockholders and designed our compensation structure with those in mind.mind (see “Executive Compensation – Compensation Discussion and Analysis”).

As described in detail under the heading “Executive Compensation—Compensation Discussion and Analysis,” our executive compensation structure is designed to attract and retain executives who have the skills and experience necessary to achieve our corporate goals, to align management’s interests with those of long-term stockholders, and to attract and retain executive management talent by providing overall compensation that is comparable to what is available through other employment opportunities for those individuals. We believe our total compensation is designed to reflect the value created for stockholders while supporting our strategic goals. Please read the “Executive Compensation” section, including “Compensation Discussion and Analysis,” for additional details about our executive compensation programs, including information about the fiscal 20142015 compensation of our named executive officers.

We will ask our stockholders to vote “FOR” the following resolution at the Annual Meeting:

“RESOLVED, that the stockholders of Stamps.com Inc. hereby approve, on an advisory basis, the compensation of the named executive officers, as disclosed in Stamps.com Inc.’s Proxy Statement for the 20152016 Annual Meeting of Stockholders pursuant to Item 402 of Regulation S-K, including the Compensation Discussion and Analysis, the Summary Compensation Table and the other related tables and disclosures.”

This vote is advisory, and therefore not binding on us, our Board or our Compensation Committee. However, our Board and Compensation Committee value the opinions that our stockholders express in their votes and will consider the outcome of this vote when considering future executive compensation arrangements as they deem appropriate. Abstentions will be counted towards the tabulations of votes cast and will have the same effect as negative votes, whereas broker non-votes, if any, will result innot constitute votes cast and therefore will have no effect on the above resolution receiving fewer votes.outcome of this advisory vote.

Unless otherwise instructed, the proxies will vote “for” the above resolution.

Recommendation of our Board

Our Board recommends that youthe stockholders vote “FOR” approval of the Advisory Vote on Executive Compensation.

PROPOSAL THREE: 20142016 AMENDMENT TO STAMPS.COM INC. 2010 EQUITY INCENTIVE PLAN

General

We are asking stockholders to approve an amendment (the “2014“2016 Amendment”) to the Stamps.com Inc. 2010 Equity Incentive Plan (the “2010 Plan”), which 20142016 Amendment was adopted by our Board on September 9, 2014,April 28, 2016, subject to such stockholder approval. The 20142016 Amendment increases the maximum aggregate number of shares of common stock and stock equivalents available for the grant ofissuance pursuant to awards under the 2010 Plan by an additional twoone million onetwo hundred thousand (2,100,000)(1,200,000) shares. Except for this increase in the number of shares available for awards, the 2010 Plan otherwise remains unchanged by the 20142016 Amendment.

On September 19, 2014, pursuantPrior to the 20142016 Amendment our compensation committee approved stock option grantsonly 293,798 shares remained available for our named executive officers and other employees of Stamps.com. These option awards granted under the 2014 Amendment vest monthly in equal parts over a 24-month period commencing October 19, 2015. On2010 Plan as of April 9, 2015, pursuant to the 2014 Amendment, our compensation committee approved additional stock option grants for our named executive officers and other employees of Stamps.com. These additional option awards granted under the 2014 Amendment vest monthly in equal parts over a 36-month period commencing upon the closing of our acquisition of Endicia, provided that such transaction closes on or before September 22,18, 2016. Options granted pursuant to the 2014 Amendment are subject to the condition that such stock options may not be exercised, and no shares may be issued under such stock options, prior to the date, if any, on which our stockholders approve the 2014 Amendment.

The 20142016 Amendment was adopted by our Board and the subsequent grant of option awards was approved by our compensation committee, respectively, (i) in order to be able to make significant three year refresh grants to our senior management because all options previously granted to our senior management group, including our named executive officers, which have been granted in three-year cycles, had fully vested in the second quarter of 2014, and the Board deemed it appropriate to approve new option grants in the third quarter of 2014 to incentivize executive performance and Company growth and in April 2015 to recognize our management’s extraordinary efforts that enabled us to enter into the Endicia acquisition agreement and the additional efforts necessary to conclude the transaction; (ii) to recognize and provide equity incentives to continue the Company’sto drive our strong growth and performance, as evidenced by a substantial increase in our market capitalization, revenue and adjusted EBITDA, and the acquisitionssuccessful completion of ShipStationthe ShipStation®, ShipWorks® and ShipWorks,Endicia® acquisitions, which were completed in June and2014, August 2014 and November 2015, respectively; and (iii)(ii) to continue to have sufficient awards available for grant to our employees directors, and third party service providersdirectors, consistent with the factors described in the Compensation Discussion and Analysis provided with this Proxy Statement, prior to the 2014 Amendment only 1,293,034 shares remained available for awards under the 2010 Plan as of August 31, 2014.Statement. Those factors include: the individual’s position and scope of responsibility; the vesting period (and thus, retention value) remaining on the executive’s existinggrantee’s previously granted options; the executive’sgrantee’s ability to affect profitability and stockholder value; the individual’sgrantee’s historic and recent job performance; equity compensation for similar positions at comparable companies; and the value of stock options in relation to other elements of total compensation.

We believe that a cost-effective and competitive equity compensation program that includes awards that are still vesting,have not yet vested, is essential for recruiting, motivating, and retaining talented employees, including our executive managers and named executive officers. For this reason, combined with the other factors listed above, our Board approved the 20142016 Amendment on September 9, 2014, and our compensation committee approved stock option grants for our named executive officers and other employees pursuant to the 2014 Amendment on September 19, 2014 and on April 9, 2015.28, 2016.

As required by the applicable NASDAQ rules, the 20142016 Amendment will not become effective unless it is approved by our stockholders.

Key Considerations

In its determination to approve the 20142016 Amendment, our Board reviewed an analysis prepared by our management that included the following:

The following paragraphs include additional information to help assess the potential dilutive impact of awards under the 2010 Plan.

As of December 31, 2014, we had outstanding 15,996,948 shares of common stock. The 2,100,0001,200,000 shares requested to be provided under the 20142016 Amendment in this Proposal 3 represent 13.13%6.87% of ourthe 17,456,552 issued and outstanding shares.

Asshares as of December 31, 2014, excluding grants made under the 2014 Amendment, a total of 1,986,116 shares of our common stock were subject to outstanding awards, all of which were outstanding stock options.¹April 18, 2016.

The following table sets forth additional relevant information about all of our outstanding awards and available shares under all of our equity plans with outstanding or available awards:awards, all of which plans have been approved by our stockholders:

The 2010 Plan, the 20142016 Amendment of which is on the ballot for this annual meeting, is the only active plan that can be used for future equity grants.

The weighted-average number Nonetheless, at April 18, 2016, option awards under our 1999 Plan remained outstanding which are exercisable to purchase an aggregate of 40,957 shares of our common stock issued and outstanding in each of the last three fiscal years is 16,079,000 shares issued and outstanding in 2012; 15,691,000 shares issued and outstanding in 2013; and 16,011,000 shares issued and outstanding in 2014. The total number of shares of our common stock subject to awards granted under the 2010 Plan over the last three fiscal years are as follows:stock.

In light of the factors described above, ourOur Board believes the number of1,200,000 additional authorized shares being requestedto be made available for grants of awards under the 20142016 Amendment represents reasonable potential equity dilution and provides a significant incentive formanagement with an appropriate equity plan with which to satisfactorily align the incentives of our employees, directors and third party service providersother eligible participants to increase the value of the Companyour company for all stockholders.

The inclusion of this information in this Proxy Statement should not be regarded as an indication that the assumptions used to determine the number of shares will be predictive of actual future equity grants. These

Summary of the 2010 Equity Incentive Plan

The 2010 Plan contains the following important features:

• Repricing of stock options and stock appreciation rights is prohibited unless stockholder approval is obtained.

• Stock options and stock appreciation rights must be granted with an exercise price that is not less than 100% of the fair market value on the date of grant.

• Automatic replacement of stock options or stock appreciation rights when a stock option or stock appreciation right is exercised with previously acquired shares of our common stock (so-called “reloading”) is not permitted.

• The 2010 Plan has a ten-year term that ends June 16, 2020.

• If an award expires unexercised, or is forfeited, canceled, reacquired by us at cost, satisfied without issuance of stock or payment of cash or is otherwise terminated without being exercised, the unvested or cancelled shares will be returned to the available pool of shares for future awards.

• No more than 700,000 shares and share equivalents may be granted to any one participant in a calendar year.

• “Full value” awards (such as restricted stock and restricted stock units) are counted against the 2010 Plan overall limits as two shares (rather than one), while options and stock appreciation rights are counted as one share.

Administration. The 2010 Plan is administered by the Compensation Committee of our compensation committee.Board. Subject to the provisions of the 2010 Plan, the committeeCompensation Committee has full power and authority to select the participants to whom awards will be granted, to determine (and modify) the specific terms and conditions of each award, including the conditions for the vesting, performance goals and exercisability of the award, and to interpret the 2010 Plan and adopt, amend, or rescind rules, procedures, agreements, and forms relating to the 2010 Plan.

Eligibility. Employees, directors, and third party service providers are eligible to receive awards, although third party service providers and outside directors are not eligible for incentive stock options. The committeeCompensation Committee has the discretion to select the employees, directors, and third party service providers to whom awards will be granted. As of April 10, 2015,18, 2016, we had approximately 342585 employees, 3 non-employee directors and 1 consultant who were eligible to participate in the 2010 Plan. The actual number of individuals or entities who will receive awards cannot be determined in advance because the committeeCompensation Committee has the discretion to select the award recipients.

Types of Awards. The following is a brief summary of the types of awards that may be granted:

Stock OptionsOptions.. A stock option (either an incentive stock option or a nonstatutory stock option) entitles the participant to purchase shares of our common stock at specified times at an exercise price set on the grant date. A participant has no rights as a stockholder with respect to any shares covered by the option until the option is exercised by the participant and shares are issued by us. At the time of grant, the committeeCompensation Committee will determine such matters as: (a) whether the award will be an incentive stock option or a nonstatutory stock option; (b) the number of underlying shares; (c) the exercise price, which may not be less than 100% of the fair market value of a share on the grant date; (d) the vesting schedule; and (e) the term of the option, which may not exceed 10 years from the grant date.

Stock Appreciation Right (“SAR”). An SAR is an award entitling the participant to receive cash or shares, or a combination thereof, with a value equal to any increase in the value of our shares.shares from the date of grant to the date of exercise. The amount of the award to be paid on an exercise date is determined by multiplying the number of shares for which the SAR is exercised by the excess of the fair market value of a share on the date of exercise over the per share exercise price. For cash-settled SARs, the participant will have no rights as a stockholder. For stock-settled SARs, the participant will have no rights as a stockholder with respect to any shares covered by the SAR until the award is exercised by the participant and we issue the shares. At the time of grant, the committeeCompensation Committee will determine such matters as: (a) the number of shares subject to the award; (b) whether the award will be settled in cash, shares, or a combination of both; (c) the exercise price,

which may not be less than 100% of the fair market value of a share on the grant date; (d) the vesting schedule; and (e) the term of the SAR. A SAR may be granted independently or in combination with a related stock option. The term of an SAR may not exceed 10 years from the grant date.

for a participant to have the right to exercise any outstanding awards until 10 days prior to the transaction (including by accelerating the exercise of awards that would not otherwise be exercisable) and may provide that repurchase options or forfeiture rights on awards can lapse if the proposed transaction takes place as contemplated. To the extent not exercised prior to the transaction, an award will terminate.

U.S. Federal Income Tax Consequences. The following is a summary of the general federal income tax consequences to participants who are U.S. taxpayers and to us relating to awards granted under the 2010 Plan. This summary is not intended to be exhaustive and does not address all matters that may be relevant to a particular participant based upon his or her specific circumstances.

definitive proxy statement for our 2010 Annual Meeting of Stockholders filed with the SEC on April 28, 2010, and atogether with the 2014 Amendment to the 2010 Plan, which can be found in Annex C to our definitive proxy statement for our 2015 Annual Meeting of Stockholders filed with the SEC on April 28, 2015. A copy of the 20142016 Amendment to the 2010 Plan is included as Annex C to this Proxy Statement. The foregoing description of the 2010 Plan is qualified in its entirety by reference to the full text of the 2010 Plan, the 2014 Amendment and the 20142016 Amendment, which are incorporated herein by reference.

Other Information

Because all awards made under the 2010 Plan, as amended, will be made at the committee’sCompensation Committee’s discretion, the benefits and amounts that will be received or allocated under the 2010 Plan and the 2014 Amendment are not determinable at this time. The closing price of the common stock, as reported on NASDAQ on April 10, 2015,19, 2016, was $67.08$95.02 per share.

PROPOSAL FOUR: RATIFICATION OF INDEPENDENT AUDITORS

General

Our Audit Committee has appointed the firm of Ernst & Young LLP, our independent auditors during 2014,2015, to serve in the same capacity for 2015,2016, and is asking stockholders to ratify this appointment. Stockholder ratification of the appointment is not required by our bylaws or by any other applicable legal requirement. However, our Board is submitting the appointment of Ernst & Young LLP to stockholders for ratification as a matter of good corporate practice.

If stockholders fail to ratify the appointment, the Audit Committee and our Board will reconsider whether or not to retain Ernst & Young LLP. Even if the appointment is ratified, our Audit Committee in its discretion may direct the appointment of a different independent auditing firm at any time during the year if our Audit Committee believes that such a change would be in our best interests.

A representative of Ernst & Young LLP is expected to be present at the Annual Meeting, will have the opportunity to make a statement if he or she desires to do so, and will be available to respond to appropriate questions.

The ratification of the appointment of Ernst & Young LLP as our independent auditors for 20152016 requires the affirmative vote of the holders of a majority of the shares of our common stock present at the Annual Meeting in person or by proxy and entitled to vote. Abstentions will be counted towards the tabulationstabulation of votes cast and will have the same effect as negative votes, whereas broker non-votes, if any, will not be counted for purposes of determining whether the proposal has been approved.

Unless marked to the contrary, proxies received will be voted FOR ratification of the appointment of Ernst & Young LLP as our independent auditors for 2015.2016.

Recommendation of our Board

Our Board recommends that the stockholders vote “FOR” the ratification of the appointment of Ernst & Young LLP to serve as our independent auditors for 2015.2016.

INDEPENDENT AUDITORS’ FEES AND SERVICES

Fees Billed by Ernst & Young LLP during 20142015 and 20132014

During 20142015 and 2013,2014, Ernst & Young LLP provided various audit, audit related and non-audit services to us as follows:

Audit Fees.

Aggregate fees billed to us by Ernst & Young LLP for professional services rendered for the audit of our annual financial statements, including professional services related to the audits of the effectiveness of internal control over financial reporting, and review of financial statements included in our quarterly reports on Form 10-Q, totaled approximately $689,552 and $479,020 during 2015 and $390,000 during 2014, and 2013, respectively.

Audit-Related Fees

Audit-related fees related to accounting consultations in connection with acquisitions totaled approximately $11,880 and $6,504 in 2014. There were no such fees in 2013.2015 and 2014, respectively.

Tax Fees

Fees billed to us by Ernst & Young LLP for tax services rendered to us during 2015 and 2014 totaled approximately $25,157 and $5,299, respectively. Tax services for which we were billed in 2015 comprised a review of certain federal tax matters undertaken partly in 2014 and 2013 totaled approximately $5,299 and $23,966, respectively. Specifically,partly in 2014, tax services were rendered in connection with day-to-day operations. Tax services provided in 2013 related to the analysis of our net operating loss carryforwards pursuant to Section 382 of the Internal Revenue Code of 1986, as amended, and the related Treasury Regulations.2015.

All Other Fees

We had no fees billed to us by Ernst & Young LLP for other non-audit and non-tax professional services during 20132015 or 2014.2014 other than the audit fees, audit-related fees and tax fees described above.

Pre-Approval Policy

TheOur Audit Committee’s charter provides that the Audit Committee pre-approvespre-approve all audit and permissiblepermitted non-audit services provided to usbe performed by our independent auditors. Pre-approval is generally provided at a meeting of the Audit Committee and covers a specified period of time. Any pre-approval is detailed as to the particular service or category of services covered and is generally subject to a specific budget. The independent auditors and management periodically report to the Audit Committee regarding the extent of services provided by our independent auditors in accordance with this pre-approval, and the fees for the services performed to date. The Audit Committee may also pre-approve other particular services on a case-by-case basis. All services provided to us by Ernst & Young LLP during 2015 and 2014 were pre-approved by the Audit Committee in accordance with this policy.

Determination of Independence

Our Audit Committee and our Board have determined that the fees received by Ernst & Young LLP for the non-audit related professional services listed above are compatible with maintaining Ernst & Young LLP’s independence, and such fees were approved by the Audit Committee.

MANAGEMENT

The following table sets forth certain information regarding our executive officers as of April 15, 2015:2016:

Mr. McBride’s biography is set forth above under the heading "Proposal“Proposal One: Election of Director – Continuing Director Whose Term Expires at the 2017 Annual Meeting of Stockholders".Stockholders.”

Kyle Huebner has been our Chief Financial Officerchief financial officer since 2004 and on January 13, 2012 was also elected as our Co-President.co-president. Mr. Huebner was our Vice Presidentvice president of Marketingmarketing from 2001 to 2004, our Vice Presidentvice president of Corporate Strategycorporate strategy from 2000 to 2001, and our Senior Directorsenior director of Corporate Strategycorporate strategy from 1999 to 2000. Prior to joining us, from 1997 to 1999, Mr. Huebner was a management consultant at Bain & Company. From 1992 to 1995, Mr. Huebner served as a Research Analystresearch analyst for J.P. Morgan, Inc. Prior to 1992, Mr. Huebner held various management positions with Melville Corporation. Mr. Huebner received his B.A. in Mathematics from Dartmouth College and his M.B.A. from Harvard University.

James Bortnak was elected as Co-Presidentco-president and Corporatecorporate & Business Development Officerbusiness development officer as of January 13, 2012. From February 2010 to January 13, 2012 he served as our Senior Vice President, Corporatesenior vice president, corporate & Business Development.business development. Mr. Bortnak was previously our Chief Marketing Officerchief marketing officer from 2004 to 2009. Mr. Bortnak served as our Vice President, Business Developmentvice president, business development from 2002 to 2004, and as a senior member of our Business Development group since joining us in 1999. Prior to joining us, Mr. Bortnak practiced business law, focusing in the area of technology and start-up companies. Mr. Bortnak holds an LLB from the University of British Columbia, and has been a member of the California Bar since 1997.

Sebastian Buerba has been our Chief Marketing Officer since January 2012. Previously, Mr. Buerba served as Vice President, Marketing from April 2009 to January 2012, as Director, Marketing from April 2006 to April 2009, and as Product Strategy Manager from July 2004 to April 2006. Prior to joining Stamps.com, Mr. Buerba worked as Marketing Product Manager for Telecom Argentina Stet-France Telecom S.A. from 1998 to 2002. Mr. Buerba holds a bachelor’s degree, with honors, in Electrical Engineering and a master’s degree in Telecommunications from Instituto Tecnologico de Buenos Aires. Mr. Buerba also holds an MBA, with honors, from The Anderson School of Management, University of California, Los Angeles.

John Clem has been our Chief Productchief product & Strategy Officerstrategy officer since January 2012. Mr. Clem was our Vice President, Productvice president, product and Service Operationsservice operations from March 2006 to January 2012. Previously, Mr. Clem served as the Directordirector of Corporate Strategycorporate strategy from March 2003 to February 2004 and as a Directordirector of Marketingmarketing from March 2004 to February 2006. Prior to joining us, Mr. Clem worked as an engineer and manager in the petrochemical and utilities industries and a management consultant at Booz Allen & Hamilton. Mr. Clem received his Bachelor’s Degree, with honors, in Mechanical Engineering from California State Polytechnic University at Pomona and his M.B.A., with honors, from the Ross School of Business at The University of Michigan.

Seth Weisberg has been our Chief Legal Officerchief legal officer since 2008 and our Secretarysecretary since 2001. Mr. Weisberg was our General Counselgeneral counsel from 2001 to 2008 and our Senior Director,senior director, IP & Licensinglicensing from 1999 until 2001. Mr. Weisberg previously was an associate at Irell & Manella LLP, worked as a software developer and founder at Shortcut Software, created physical computer models at RAND Corporation and was a high school teacher in the Mississippi Teacher Corps. Mr. Weisberg holds a law degree from Columbia Law School, a master'smaster’s degree in History from Harvard University, a bachelor'sbachelor’s degree in Physics and Astronomy from Harvard University and a General Course Certificate from the London School of Economics. Mr. Weisberg is a registered patent attorney.

EXECUTIVE COMPENSATION

COMPENSATION DISCUSSION AND ANALYSIS

This Compensation Discussion and Analysis provides qualitative information and context for the information presented in the Summary Compensation Table and other tables and narratives that follow. As discussed above in Proposal Two, in 2014,2015 our advisory vote on executive compensation was approved by approximately 90%seventy percent (70%) of the votes cast. These results represented majority support for our named executive officer compensation. We took the percent of approval into account when determining that no specific changes/revisions would be made to our compensation structure. However, we continually strive to understand and respond to our stockholders’ opinions and concerns regarding our executive compensation structure and will continue to do so in the future. The goals of our executive management compensation program are to attract executives who have the skills and experience necessary to achieve our corporate goals, to align management’s interests with those of long-term stockholders, and to attract and retain executive management talent by providing overall compensation that is comparable to what is available through other employment opportunities for those individuals. Our executive management compensation program is designed to reward a focus by our executive team onfor delivering both short and long term financial results, including annual growth in revenue and adjusted EBITDA though our non-equity incentive plans, and growth in long term shareholder value through our equity incentive plans.

Company Performance Highlights

We had an extraordinary year in 2014.2015. Total revenue rose 15%45% to a record $147.3$214.0 million. Core mailingMailing and shipping revenue, which excludes the enhanced promotion channel,customized postage revenue, was up 16%46% year-over-year to a record $139.7$206.7 million. The strong performance in our core mailing and shipping business contributed to record earnings with non-GAAP net income of $40.6up 92% to $77.2 million, adjusted non-GAAP EBITDA up 87% to $82.6 million, and non-GAAP net income per fully diluted share of $2.47.up 79% to $4.43. The Company’scompany’s strong performance was reflected by the performance of our common stock price which increased 15%128% during 2014.2015 (from December 31, 2014 to December 31, 2015).

The Company believesWe believe the compensation program for the named executive officers has been instrumental in helping the Companyus achieve itsour strong financial performance.

Analysis and Response to Substantial Minority Vote Against Fiscal 2014 Executive Compensation

In response to the minority of our stockholders (approximately 30% of votes cast) that voted against the advisory vote on executive compensation at our 2015 Annual Meeting of Stockholders, the company sought feedback from stockholders regarding their concerns with our executive compensation arrangements. Most stockholders did not cite any specific reason for opposition other than the adverse recommendation of proxy voting service Institutional Shareholder Services (“ISS”).

The Compensation Committee reviewed the factors that ISS asserted as the basis for its adverse recommendation for the advisory vote on compensation with respect to fiscal 2014, and considered a number of these factors in its analysis of fiscal 2015 compensation, including the following:

The Committee did not ultimately make any similar discretionary upward adjustment to the 2015 non-equity incentive plan (the “2015 Plan”) amounts that were earned in fiscal 2015 and are to be paid in 2016. On April 9, 2015, the Committee had approved both the 2015 Plan and a special one-time deal bonus related to the completion and announcement of the intended acquisition of Endicia for certain of our executives and other key employees in the aggregate amount of $280,000 (the “Endicia Deal Bonus”). The Endicia Deal Bonus was a special one-time bonus separate from the 2015 Plan intended to recognize the extraordinary effort of our executive management in the completion of the definitive agreement to acquire Endicia. However, upon the recommendation of our chief executive officer, the Committee determined in April 2016 that the $280,000 Endicia Deal Bonus would be deemed included within the 2015 Plan amounts (even though $20,000 of the Endicia Deal Bonus was not paid to the executive officers), such that the amount to be paid out in May 2016 would be reduced by the $280,000 previously paid.

Overall Methodology of Setting Compensation

The Compensation Committee sets all compensation for, and awards to, our chief executive and all corporate officers which typically includes our chief financial officer and co-president, our chief legal officer, our co-president and corporate and business development officer, our chief technology officer, our chief product & strategy officer, and our vice president of postal technology and affairs. The Compensation Committee reviews the performance and compensation of our chief executive officer and, following discussions with our chief executive officer, establishes his compensation level. For the remaining corporate officers, our chief executive officer makes recommendations to the Compensation Committee, and the Compensation Committee may or may not make adjustments to the recommendations of our chief executive officer before setting the final executive officer compensation. For executives who are not also corporate officers, our chief executive officer and chief financial officer set the base salary and bonus compensation based on comparable benchmarks and performance of the executive and performance of the Company,company, and such compensation is disclosed to the Compensation Committee. However, for equity awards to executives who are not also corporate officers, our chief executive officer makes recommendations to the Compensation Committee and the Compensation Committee sets the specific executive manager equity award based on comparable benchmarks and performance of the executive and performance of the Company.company. With respect to equity compensation, the Compensation Committee grants stock options to executive management from time to time, generally based upon the recommendation of our chief executive officer. We do not believe our compensation structure and policies are reasonably likely to have a material adverse effect on us and we do seek to maintain a compensation structure that discourages excessive risk taking by our executives. We do this by aligning the interests of our management closely with long-term stockholders. For example, our stock option grants encourage results over a minimum of three years, helping to ensure current results remain sustainable.

The majority of our compensation decisions are generally made early each year, where the Compensation Committee determines the final incentive compensation for the prior year and establishes the base salaries and incentive compensation model for the coming year for corporate officers.

On January 28, 2015,April 15, 2016, the Compensation Committee approved the final incentive compensation for 2014, and2015, established the base salaries for 2015,2016, and subsequently on April 9, 2015 the Compensation Committee approvedestablished an incentive compensation plan for 2015, and subsequently on April 21, 2015 the chief executive officer and chief financial officer approved the base salaries and bonuses for executive managers who are not also corporate officers2016 (all decisions collectively, the “2015“2016 Compensation Decisions”). In doing so, the Compensation Committee and the chief executive officer and chief financial officer utilized reports and data from Equilar, Inc. (“Equilar”), a company that provides standardized data based on U.S. proxy data from all publicly traded companies. For each executive manager, a benchmark group (the “2015(collectively, the benchmark groups for all of our executive management are referred to as the “2016 Equilar Benchmarks”) was created using individuals that have similar titles and responsibilities at companies (i) with $100 to $300 million in revenue; (ii) having market capitalization of $400 million or more;$1 billion to $3 billion; (ii) located anywhere in the United States; and (iii) located in higher cost-of living states (including CA, CT, DE, FL, GA, IL, MD, MA, MN, NH, NY, PA, TX, VA, WA and the District of Columbia); and (iv) in industries that include all technology companies. These parameters, which increased for 20152016 from those used in 20142015 to reflect the increase in the size of our Company resulting from 2014 acquisitions,company’s market capitalization, provided companies for our benchmarks that are consistent with the size of our Companycompany and the general scope of responsibilities of our executive management. For one corporate officer who is not a named executive officer, the benchmark group utilized comparative data from the 2014 Equilar Benchmarks because there was not sufficient data for a meaningful analysis under the 2015 Equilar Benchmarks. Individuals at other companies who were founders, who were interim, who had resigned, or that had received no cash bonus during the last year (e.g., those that received stock in lieu of cash or whose performance did not warrant a cash bonus) as of the date of their companies'companies’ proxy statements were excluded from the analysis. Only proxies filed after January 1, 20142015 or later were included, and compensation was time-adjusted using industry average compensation increases or budgeted increases from company surveys available from Culpepper and Associates (for example, the Compensation Committee assumed a 3.0% average annual increase for time adjusting prior year compensation numbers). The criteria for inclusion of a company in our benchmark groups were generally the same for our 20152016 Compensation Decisions as for the compensation decisions that were made in 2014,2015, except that (i) a lowerhigher market capitalization range of $1 billion to $3 billion was used to reflect the increase in size of our market capitalization during 2015; (ii) revenue was eliminated as a selector as very few companies had revenue in the range of our company and simultaneously had market cap rangescapitalization in line with our company; and (iii) all U.S. geographies were included to increase the number of $100 to $250 million and over $200 million, respectively,companies we had for each executive, where it was noted that the vast majority of comparable companies were utilized to setlocated in areas where the 2014 Equilar Benchmarks as thosecost of living is at or below that of our company. The aforementioned criteria resulted in companies of a size and for which the scope of responsibility for the executive management were generally similar to our Companycompany at the time that the 20142016 Compensation Decisions were made. AlthoughFurthermore, the criteria were mostlyCompensation Committee noted that, when examining the same,114 companies that constitute the actualcomplete list of all companies involved changed basedacross all titles in the 2016 Equilar Benchmarks for all of our executives, at the time of the 2016 Compensation Decisions, Stamps.com had a similar market capitalization of $1.6 billion versus the median market capitalization for the 114 companies of $1.7 billion. Furthermore, Stamps.com ranks very highly in several key financial ratios as compared to the 114 companies, including the 88^th percentile for return on equity, the results of those individual companies.93^rd percentile for return on assets, and the 94^th percentile for return on revenue. A list of companies included in the peer groups2016 Equilar Benchmarks for each of our named executive officers (collectively, with all executive management, the 2015 Equilar Benchmarks) in connection with the 20152016 Compensation Decisions is included in Annex B.

Each Element of Compensation, Why We Pay It, and How We Determine Amounts

We currently compensate our executive management, which consists of seven members, including our named executive officers, through three main elements: base salary, incentive pay and equity participation. Certain members of our executive management also have post-termination compensation arrangements.

For 2015,2016, each corporate officer’s base salary was set by the Compensation Committee between the 3138^stth and 9866^th percentile versus the 20152016 Equilar Benchmarks. In particular, the salaries for our chief executive officer, and our chief financial officer and co-president, for 20152016 were set at approximately the 8352^rdnd percentile and 93^rd percentile, respectively, versus the 2015their respective 2016 Equilar Benchmarks. In addition, the salaries for our co-president and corporate &and business development officer, chief product & strategy officer and chief legal officer were set at the 9866^th, 6438^th, and 8851^thst percentiles, respectively, versus the 20152016 Equilar Benchmarks.

and/or non-cash items such as ASC 718-related expenses, litigation charges, non-recurring adjustments, changes in the ShipStation earn-out valuation, corporate development / acquisition expenses, and other 1-timeone-time and non-recurring items). The Compensation Committee set the amount of the 20142015 Base Pool at

Based on these factors and an assessment that each of the named executive officers had satisfied theirhis individual goals and objectives, the Compensation Committee set the individual allocation of the 20142015 bonus pool. Additionally, on April 21, 2015 the chief executive officer and the chief financial officer set the compensation of our chief marketing officer as he is not currently a corporate officer; in doing so they considered all of the same aforementioned factors that the Compensation Committee considered, and also evaluated the performance of our chief marketing officer, and also compared his total 2014 compensation to the 2015 Equilar Benchmarks which were calculated in the aforementioned manner. The Compensation Committee was informed of the compensation of the chief marketing officer. The compensation was as follows:

For additional information concerning the compensation of each of our named executive officers for 2014,2015, see “Summary Compensation Table.”

On April 9, 2015,15, 2016, the Compensation Committee approved a non-equity incentive plan for 20152016 (the “2015“2016 Plan”) under which our corporate officers, including some of our named executive officers, are eligible for cash bonus awards to be paid in 2016.2017. The 20152016 Plan sets a base level aggregate bonus pool of $1.8$2.3 million (the “2015“2016 Base Pool”) and provides that the actual bonus pool for 20152016 could range from zero to twice the 20152016 Base Pool based on our performance in 20152016 relative to targets for revenue and non-GAAP adjusted EBITDA (which, as publicly reported by the Company,company, typically excludes non-recurring and/or non-cash items such as ASC 718-related expenses, litigation charges, non-recurring adjustments, changes in the ShipStation earn-out valuation, corporate development / acquisition expenses, and other one-time and non-recurring items). The Compensation Committee increased the size of the 2015 Base Pool from the $1.4 million 20142016 Base Pool to $2.3 million from the $1.8 million 2015 Base Pool because of the overall increase in the size of our company and the scope of responsibilities of our Company,executive management, and because of an expectedthe increase in the size of comparable companies expected to be used during the 2016in our 2017 Compensation Decisions (expectedthat are expected to happen in early 2017) owing to the expected increase in Company

Committee further proposed a 3% decrease be applied to the 2016 Base Pool if the company achieves performance at the low end of its guidance range and the resulting equivalent non-GAAP adjusted EBITDA. The Committee further proposed a 33% increase be applied to the 2016 Base Pool if the company achieves performance at the high end of its guidance range and the resulting equivalent non-GAAP adjusted EBITDA. To illustrate the likely outcomesome possible outcomes of the 20152016 Plan, the following table (i) shows the potential aggregate pool resulting from the formula under the 20152016 Plan if we achieve anthe company achieves a financial outcome at the top end, midpoint, and bottom end of our guidance range and (ii) compares the resulting executive management team total compensation to the total compensation of the 20152016 Equilar benchmarks:

This table merely illustrates certain potential outcomes, and does not represent any statement that the guidance given in February 20152016 continues to be valid. Our actual results willmay vary from our prior guidance, and those differences may be material.

We currently do not have specific equity ownership goals relative to benchmarks for our named executive officers. In determining the number of options to be granted to executive officers, the Compensation Committee generally takes into account such factors as the individual’s position and scope of responsibility;

25^th percentile, andOn April 9, 2015, pursuant to the 2014 Amendment, the Compensation Committee approved grants of performance-based stock options to purchase an aggregate of 175,000 shares to our chief financial officer and co-president, held stock and optionsexecutive management related to the March 24, 2015 announcement that represented potential ownershipwe had entered into a definitive agreement with Newell Rubbermaid Inc. to acquire Endicia for $215 million in cash. In doing so, the Committee recognized the significant effort of our common stock atexecutive team through the 63rd percentile,date of such approval, as well as the prospective significant future effort in each case versusexecuting the 2014 Equity Benchmarks as calculated bydeal to close and performing the Committee. In addition, following the September 19, 2014 stocknecessary integration work. The special one-time deal-completion option grants our chief technology officer held stockwere contingent upon management successfully closing the Endicia deal, and options that represented potential ownershipvest in 36 equal monthly installments commencing upon the date of closing of our common stock at the 81st percentile versus the 2014 Equity Benchmarks as calculated by the Committee. Our chief legal officer’s ownership position was above the 90^th percentile versus the 2014 Equity Benchmarks as calculated by the Committee (thisacquisition of Endicia (that is, attributable to him holding his stock and options for longer periods of time than is typical of comparable counterparts in other companies)November 18, 2015). Our co-president corporate and business development did not have enough data amongst the 21 companies to do a meaningful analysis, but we believe that his potential equity positions were consistent with past practices and are reasonable.

For information concerning the post termination compensation of our named executive officers, see “Potential Payments Upon Termination or Change-In-Control.”

Other Benefits

As reflected in the Summary Compensation Table, we generally do not provide special perquisites to our executive management. Executive management participates in our standard benefit plans on the same terms as other employees. These plans include medical and dental insurance, 401(k), life insurance, charitable gift matching (limited to 50% matching of up to $200 per employee per year) and our employee stock purchase plan. Relocation benefits for executive officers may also be reimbursed but are individually negotiated when they occur.

Tax and Accounting Considerations.

We record cash compensation as an expense at the time the obligation is accrued. Under Section 162(m) of the Internal Revenue Code, compensation in excess of $1,000,000 paid in any one year to named executive officers (other than our chief financial officer) is not tax deductible to us unless certain requirements are met. Our current program for the payment of non-equity incentive compensation and additional bonuses does not meet the Section 162(m) requirements necessary to be considered “performance-based,” and, as a result, is included in compensation subject to the $1 million limitation on deductibility. Except for approximately $64,000$728,833 in excess of $1 million paid to our Chairmanchairman of the Boardboard and Chief Executive Officer,chief executive officer, the cash compensation paid to each of our named executive officers in 20142015 was less than $1 million, and, therefore, the deductibility of such

In general, income recognized by employees upon the exercise of nonqualified stock options is tax-deductible for us, subject to any limitations that may be imposed by Section 162(m). Gain recognized by an employee with respect to an incentive stock option will not be deductible unless there is a “disqualifying disposition” of the shares by the employee. A disqualifying disposition occurs when an employee sells or disposes of incentive stock option shares within two years after the grant date or within one year after the exercise date. The employee is taxed on the gain, based on stock value at the time of exercise of the incentive stock option, at ordinary income tax rates. In addition, if in the future we grant restricted stock or restricted stock unit awards to named executive officers that vest on a time basis or otherwise are not performance-based for purposes of Section 162(m), they may not be fully deductible by us at the time the award is otherwise taxable to the employee.

We account for equity compensation paid to our executives and employees under the rules of ASC 718, which requires us to estimate and record a non-cash expense over the term of the equity compensation award. The value of a total of 982,667 options granted under the 2014 Amendment and approved by the Board in 2014, subject to stockholder approval (the “Contingent Grants”), was not included in the compensation expense for 2014, because such options had no value, as computed in accordance with ASC 718, until the stockholder approval upon which they were contingent was obtained in June 2015. Accordingly, although the Contingent Grants were made in 2014, we valued the expense based on our stock price in June 2015 when such Contingent Grants were approved by our stockholders. Due to the increase in our stock price between the date of grant and the date of stockholder approval, the Contingent Grants were valued at $42.66 per share, as compared to the $11.84 per share valuation for the other options granted on the same date. The Contingent Grants will result in an aggregate stock-based compensation expense of up to approximately $41.9 million, amortized over the vesting period from October 2015 through September 2017 (up to $5.2 million, $21.0 million and $15.7 million in each of fiscal 2015, 2016 and 2017, respectively).

Forward-Looking Statements

This proxy statement contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These statements relate to expectations concerning matters that are not historical facts. You can findidentify many (but not all) of these statements by looking for words such as “approximates,” “believes,” “expects,” “anticipates,” “estimates,” “intends,” “plans,” “would,” “may” or other similar expressions in this proxy statement. We claim the protection of the safe harbor contained in the Private Securities Litigation Reform Act of 1995. We caution you that any forward-looking statements presented in this proxy statement, or that we may make orally or in writing from time to time, are based on beliefs and assumptions made by, and information currently available to, us. Such statements are based on assumptions, and the actual outcome will be affected by known and unknown risks, trends, uncertainties and factors that are beyond our control or ability to predict. Although we believe that our assumptions are reasonable, they are not guarantees of future performance, and some will inevitably prove to be incorrect. As a result, our actual future results may differ from our expectations, and those differences may be material. We are not undertaking any obligation to update any forward-looking statements. Accordingly, you should use caution in relying on past forward-looking statements, which are based on known results and trends at the time they are made, to anticipate future results or trends.

Please refer to the risk factors under “Item 1A. Risk Factors” of our 20142015 Annual Report on Form 10-K as well as those described elsewhere in our public filings. The risks included are not exhaustive, and additional factors could adversely affect our business and financial performance. We operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time, and it is not possible for management to predict all such risk factors, nor can it assess the impact of all such risk factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements.

COMPENSATION COMMITTEE REPORT

The information contained in this Compensation Committee Report shall not be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, whether made before or after the date hereof and irrespective of any general incorporation language in any such filing (except to the extent that we specifically incorporate this information by reference) and shall not otherwise be deemed “soliciting material” or “filed” with the Securities and Exchange Commission or subject to Regulation 14A or 14C, or to the liabilities of Section 18 of the Securities Exchange Act of 1934 (except to the extent that we specifically request that this information be treated as soliciting material or specifically incorporate this information by reference).

The Compensation Committee has reviewed and discussed the “Compensation Discussion and Analysis” section of this proxy statement with management. Based on this review and discussion, the Compensation Committee recommended to the Board of Directors that the “Compensation Discussion and Analysis” section be included in this proxy statement.

SUMMARY COMPENSATION TABLE

The following summary compensation table indicates the total compensation earned during 2015, 2014 2013 and 2012,2013, respectively, by our chief executive officer, chief financial officer and co-president and each of our other three highest compensated executive officers whose total compensation exceeded $100,000 during 2014.2015. The listed individuals are referred to in this proxy statement as the named“named executive officers.”

Summary Compensation Table

GRANTS OF PLAN-BASED AWARDS

The following table provides information with respect to grants of plan-based awards made during 20142015 to the named executive officers.