Hackett Group Inc — Current Report (Form 8-K)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (Date of earliest event reported): April 30, 2026

The Hackett Group, Inc.

(Exact name of registrant as specified in its charter)

(305) 375-8005

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR § 230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR § 240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On May 5, 2026, The Hackett Group, Inc. (the “Company”) issued a press release setting forth its consolidated financial results for the first fiscal quarter ended March 27, 2026. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein.

The information contained in Item 2.02 of this current report on Form 8-K, as well as Exhibit 99.1, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” with the Securities and Exchange Commission nor incorporated by reference in any registration statement filed by the Company under the Securities Act of 1933, as amended.

Item 5.07 Submission of Matters to a Vote of Security Holders.

The 2026 Annual Meeting of Shareholders of the Company was held on April 30, 2026. Matters submitted to shareholders at the meeting and the voting results thereof were as follows:

Proposal 1 - Election of Director. The shareholders of the Company elected the director nominee named below to serve until the 2029 Annual Meeting of Shareholders and until his successor is duly elected and qualified. The following is a breakdown of the voting results:

Proposal 2 – Amendment to the Company’s Employee Stock Purchase Plan. The shareholders of the Company approved an amendment to the Company’s Employee Stock Purchase Plan (the “Purchase Plan”) to (i) increase the number of shares authorized for issuance under the Purchase Plan by 250,000 shares, and (ii) extend the current term of the Purchase Plan by three years until July 1, 2031. The following is a breakdown of the voting results:

Proposal 3 – Advisory Vote on Executive Officer Compensation. The shareholders of the Company approved an advisory vote on executive officer compensation. The following is a breakdown of the voting results:

Proposal 4 – Appointment of RSM US LLP as Independent Auditor. The shareholders of the Company ratified the appointment of RSM US LLP as the Company’s independent registered public accounting firm for the fiscal year ending January 1, 2027. The following is a breakdown of the voting results:

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.