CRA INTERNATIONAL, INC.

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ANNUAL MEETING OF SHAREHOLDERS

Purpose of the annual meeting

At the annual meeting, we will submit the following proposals to our shareholders:

Proposal One: To elect two Class III directors to a three-year term;

Proposal Two: To approve, on an advisory basis, the compensation paid to our named executive officers, as disclosed in this proxy statement pursuant to Item 402 of Regulation S-K (including in the compensation discussion and analysis, compensation tables and accompanying narrative disclosures);

Proposal Three: To ratify the appointment by our audit committee of Grant Thornton LLP as our independent registered public accountants for our fiscal year ending January 3, 2026.

Our board of directors does not intend to present to the annual meeting any business other than the proposals described in this proxy statement. Our board of directors was not aware, a reasonable time before making this proxy statement available to our shareholders, of any other business that properly may be presented for action at the annual meeting. If any other business should come before the annual meeting, the persons present will have discretionary authority to vote the shares they own or represent by proxy in accordance with their judgment, to the extent authorized by applicable regulations.

Record date

Our board of directors has fixed the close of business on Friday, May 23, 2025, as the record date for the annual meeting. Only shareholders of record at the close of business on that date are entitled to receive notice of the annual meeting and to vote at the annual meeting. At the close of business on Tuesday, April 22, 2025, 6,808,872 shares of our common stock were issued and outstanding. A list of the shareholders entitled to notice of the annual meeting will be available to shareholders for inspection for the duration of the annual meeting of shareholders.

Quorum

Our by-laws provide that a quorum at the annual meeting consists of a majority in interest of all shares of our common stock issued, outstanding and entitled to vote at the annual meeting. Shares of our common stock represented by a properly signed and returned proxy will be treated as present at the annual meeting for purposes of determining the existence of a quorum at the annual meeting. In general, votes withheld from any nominee for election as director, abstentions, and broker “non-votes” are counted as present or represented for purposes of determining the existence of a quorum at the annual meeting. A broker non-vote occurs when a broker or nominee holding shares for a beneficial owner returns a proxy but does not vote on a proposal because the broker or nominee does not have discretionary voting power, and has not received instructions from the beneficial owner, with respect to the proposal.

Vote required; tabulation of votes; revocation of proxy

A plurality of the votes properly cast at the annual meeting will be necessary to elect the two Class III directors to a three-year term.

A majority of the votes properly cast at the annual meeting will be necessary to approve, on an advisory basis, the compensation paid to our named executive officers (as disclosed in this proxy statement pursuant to Item 402 of Regulation S-K) and to ratify the appointment by our audit committee of Grant Thornton LLP as our independent registered public accountants for our fiscal year ending January 3, 2026.

Abstentions and broker non-votes will not be considered when determining whether or not the necessary proportion of votes properly cast at the annual meeting on any proposal was achieved. If you are a registered shareholder and you return an executed proxy with specific instructions on how to vote, the designated proxies will vote according to your instructions. However, if you are a registered shareholder and you return an executed proxy without specific instructions on how to vote, the designated proxies will vote