X0609 4 2026-09-14 0001053706 CRA INTERNATIONAL, INC. CRAI 0001379160 Maleh Paul A false 200 CLARENDON STREET BOSTON MA 02116 true true false false PRESIDENT AND CEO 0 Common Stock 103550 D Restricted Stock Units 2026-09-14 4 A 0 5.3750 0 A Common Stock 5.3750 1570.5402 D Restricted Stock Units 2026-09-14 4 A 0 9.4349 0 A Common Stock 9.4349 2756.8150 D Restricted Stock Units 2026-09-14 4 A 0 9.9823 0 A Common Stock 9.9823 2916.7790 D Restricted Stock Units 2026-09-14 4 A 0 18.5659 0 A Common Stock 18.5659 5424.8135 D Restricted Stock Units 2026-09-14 4 A 0 11.4876 0 A Common Stock 11.4876 3356.5881 D Restricted Stock Units 2026-09-14 4 A 0 23.4408 0 A Common Stock 23.4408 6849.2000 D Nonqualified Stock Option (right to buy) 44.87 2017-12-18 2027-12-18 Common Stock 16304 16304 D Nonqualified Stock Option (right to buy) 47.45 2018-12-06 2028-12-06 Common Stock 15173 15173 D Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue. The RSUs, which include an aggregate of 66.5402 Dividend Units, vest on April 11, 2027. The RSUs, which include an aggregate of 116.8150 Dividend Units, vest on April 11, 2027. The RSUs, which include an aggregate of 83.7790 Dividend Units, vest in two equal annual installments beginning on April 29, 2027. The RSUs, which include an aggregate of 155.8135 Dividend Units, vest in two equal annual installments beginning on April 29, 2027. The RSUs, which include an aggregate of 62.5881 Dividend Units, vest in three equal annual installments beginning on May 20, 2027. The RSUs, which include an aggregate of 49.2000 Dividend Units, vest in four equal annual installments beginning on April 9, 2027. Date indicated is date of grant. Option vests in four equal annual installments beginning on the first anniversary of the date of grant. Delia J. Makhlouta, by power of attorney 2026-09-16