ROBERT HALF INC.

Table of Contents

Proxy Statement

The enclosed proxy is solicited on behalf of the Board of Directors (sometimes referred to as the “Board”) of Robert Half Inc., a Delaware corporation (the “Company”), the principal executive offices of which are located at 2884 Sand Hill Road, Suite 200, Menlo Park, California 94025. We are making this proxy statement and the enclosed proxy available to the Company’s stockholders beginning on April 10, 2026. The proxy is solicited for use at the annual meeting of stockholders (the “Meeting”) to be held online this year via live audiocast at www.virtualshareholdermeeting.com/RHI2026 at 10:00 a.m. PDT on Wednesday, May 13, 2026. Only stockholders of record on March 23, 2026, will be entitled to notice of, and to vote at, the Meeting and any adjournment of the Meeting. Each share is entitled to one vote. At the close of business on March 23, 2026, the record date, the Company had outstanding and entitled to vote 102,395,224 shares of its common stock, $.001 par value (“Common Stock”).