The Hackett Group, Inc. (HCKT) DEFA14A Additional proxy soliciting materials

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a)

of the Securities Exchange Act of 1934

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐	Preliminary Proxy Statement	☐	Confidential, for Use of the Commission Only (as permitted by Rule14a-6(e)(2))
☐	Definitive Proxy Statement
☒	Definitive Additional Materials
☐	Soliciting Material Pursuant to Rule§240.14a-12

THE HACKETT GROUP, INC.

(Name of Registrant as Specified In Its Charter)

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

Payment of Filing Fee (Check the appropriate box):

☒ No fee required.

☐ Fee computed on table below per Exchange Act Rules14a-6(i)(1) and0-11.

1. Title of each class of securities to which transaction applies:

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☐ Fee paid previously with preliminary materials.

☐ Check box if any part of the fee is offset as provided by Exchange Act Rule0-11(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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	Online Go towww.investorvote.com/hckt or scan the QR code – login details are located in the shaded bar below.
		Votes submitted electronically must be received by 1:00 a.m., Central Time, on May 1, 2020.

Important Notice Regarding the Availability of Proxy Materials for

The Hackett Group, Inc. Shareholder Meeting to be Held on May 1, 2020

Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual shareholders’ meeting are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important!

This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The 2020 Proxy Statement and 2019 Annual Report are available at:

	Easy Online Access — View your proxy materials and vote.
	Step 1:Go towww.investorvote.com/hckt.
	Step 2:Click on the icon on the right to view meeting materials.
	Step 3:Return to the investorvote.com window and follow the instructions on the screen to log in.
	Step 4:Make your selections as instructed on each screen for your delivery preferences.
	Step 5: Vote your shares.

When you go online, you can also help the environment by consenting to receive electronic delivery of future materials.

    Obtaining a Copy of the Proxy Materials – If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before April 21, 2020 to facilitate timely delivery.

The Hackett Group, Inc’s Annual Meeting of Shareholders will be held on May 1, 2020 at The Hackett Group, Inc. Company Headquarters, 1001 Brickell Bay Drive, 30^th Floor, Miami, Florida 33131 at 11:00 a.m., Local Time.

Proposals to be voted on at the meeting are listed below along with the Board of Directors’ recommendations.

The Board of Directors recommend a voteFOR the nominee listed andFOR Proposals 2, 3 and 4:

1. Election of Directors:

01 - John R. Harris

2. To approve an amendment to the Company’s 1998 Stock Option and Incentive Plan (the “Plan”) to (i) increase the sublimit under the Plan for restricted stock and restricted stock unit issuances by 1,200,000 shares; and (ii) increase the total number of shares authorized under the Plan by 1,200,000 shares

3. To approve, in an advisory vote, the Company executive compensation

4. To ratify the appointment of RSM US LLP as the Company’s independent registered public accounting firm for the fiscal year ending January 1, 2021

PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. If you wish to attend and vote at the meeting, please bring this notice with you.

*As part of our precautions regarding the coronavirus or COVID-19, we are planning for the possibility that the Annual Meeting may be held solely by means of remote communication. If we take this step, we will announce the decision to do so in advance, and details on how to participate will be available at www.thehackettgroup.com.

	Here’s how to order a copy of the proxy materials and select delivery preferences:
	Current and future delivery requests can be submitted using the options below.
	If you request an email copy, you will receive an email with a link to the current meeting materials.
	PLEASE NOTE:You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials.
	–	Internet– Go towww.investorvote.com/hckt.
	–	Phone– Call us free of charge at 1-866-641-4276.
	–	Email– Send an email to investorvote@computershare.com with “Proxy Materials The Hackett Group Inc.” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials.
		To facilitate timely delivery, requests for a paper copy of proxy materials must be received by April 21, 2020.