CRA INTERNATIONAL, INC. 10-Q

ITEM 5. Other Information The following table describes, for the fiscal quarter ended September 28, 2024, each trading arrangement for the sale or purchase of Company securities adopted or terminated by our directors and officers that is a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement” (in each case, as defined in Item 408 of Regulation S-K). Name and Title Date of Adoption of Rule 10b5-1 Trading Plan Scheduled Expiration Date of Rule 10b5-1 Trading Plan Nature of Trading Arrangement Aggregate Number of Securities Daniel K. Mahoney , Chief Financial Officer, Executive Vice President and Treasurer August 8, 2024 September 9, 2025 Sale 3,000 Jonathan D. Yellin , Executive Vice President and General Counsel August 8, 2024 November 20, 2025 Sale 7,000 25 Table of Contents ITEM 6. Exhibits Item No. Filed with this Form 10-Q Description 3.1 Amended and Restated Articles of Organization, as amended by the Articles of Amendment to our Articles of Organization filed on May 6, 2005 (incorporated by reference to Exhibit 3.1 to our annual report on Form 10-K filed on February 27, 2020). 3.2 Amended and Restated By-Laws, as amended (incorporated by reference to Exhibit 3.2 to our current report on Form 8-K filed on January 31, 2011). 10.1 X Fifth Amendment to Lease dated August 11, 2021 by and between CRA International, Inc., 601W South Wacker LLC and 601 Sunset Wacker LLC. 31.1 X Certification of Principal Executive Officer, pursuant to Rule 13a-14(a)/15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 . 31.2 X Certification of Principal Financial Officer, pursuant to Rule 13a-14(a)/15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 . 32.1 X Certification of Principal Executive Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 . 32.2 X Certification of Principal Financial Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 . 101 X The following financial statements from CRA International, Inc.’s Quarterly Report on Form 10-Q for the fiscal quarter ended September 28, 2024, formatted in Inline XBRL (eXtensible Business Reporting Language), as follows: (i) Condensed Consolidated Statements of Operations (unaudited) for the fiscal quarters ended September 28, 2024 and September 30, 2023, (ii) Condensed Consolidated Statements of Comprehensive Income (unaudited) for the fiscal quarters ended September 28, 2024 and September 30, 2023, (iii) Condensed Consolidated Balance Sheets (unaudited) at September 28, 2024 and December 30, 2023, (iv) Condensed Consolidated Statements of Cash Flows (unaudited) for the fiscal quarters ended September 28, 2024 and September 30, 2023, (v) Condensed Consolidated Statement of Shareholders’ Equity (unaudited) for the fiscal quarter ended September 28, 2024 and September 30, 2023, and (vi) Notes to Condensed Consolidated Financial Statements (Unaudited). 104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101). 26 Table of Contents 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 thereunto duly authorized. CRA INTERNATIONAL, INC. Date: October 31, 2024 By: /s/ PAUL A. MALEH Paul A. Maleh President and Chief Executive Officer Date: October 31, 2024 By: /s/ DANIEL K. MAHONEY Daniel K. Mahoney Chief Financial Officer, Executive Vice President and Treasurer 27