Form 4 Filing for CRA International, Inc.

This filing details transactions by Paul A. Maleh, President and CEO of CRA International, Inc. On April 9, 2026, Mr. Maleh acquired 6,800 Restricted Stock Units (RSUs) with a transaction value of $0. These RSUs vest in installments starting April 9, 2027. The filing also reports existing holdings, including 115,113 shares of Common Stock. Additionally, it lists several other RSUs granted on various dates with different vesting schedules and dividend unit accruals, as well as nonqualified stock options with exercise prices of $44.87 and $47.45, expiring in 2027 and 2028 respectively. All reported derivative holdings are directly owned.