Company: HCKT
Filing Date: 2025-03-21
Form Type: DEFA14A
Source: 0001193125-25-060323
Chunk: 1

Company: HACKETT GROUP, INC.
Filing Date: 2025-03-21
Form: DEFA14A
Chunk 1
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 — View your proxy materials and vote. Step 1: Go to www.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, 2025 to facilitate timely delivery. 2 N O T + 043MHB

The Hackett Group, Inc. Shareholder Meeting Notice The Hackett Group, Inc.’s Annual Meeting of Shareholders will be held on May 1, 2025 at 1001 Brickell Bay Drive, 30th Floor, Miami, Florida 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 vote FOR the nominees and FOR Proposals 2, 3 and 4: 1. Election of Directors: 01 - Ted A. Fernandez 02 - Robert A. Rivero 03 - Alan T. G. Wix 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 1,950,000 shares; and (ii) increase the number of shares authorized for issuance under the Plan by 1,950,000 shares; 3. To approve, in an advisory vote, the Company’s 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 December 26, 2025 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. Here’s how to order a