ROBERT HALF INC. (RHI) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-23 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: ROBERT HALF INC. (RHI) CIK: 0000315213 --- Reporting Owner --- Name: MESSMER HAROLD M JR CIK: 0001183491 Role: Director, Officer (Chairman) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-03-23 | Code: A (Grant or award) Shares: +649 | Price: $0.00 Shares Owned After: 645,735 | Ownership: D (Direct) Footnotes: [F2] Granted pursuant to the Stock Incentive Plan. [F1] Represents additional shares granted as a result of the certification of a performance condition for the performance shares granted on March 20, 2023, which will vest on March 23, 2026. [Transaction #2] Security: Common Stock Date: 2026-03-23 | Code: A (Grant or award) Shares: +44,319 | Price: $0.00 Shares Owned After: 690,054 | Ownership: D (Direct) Footnotes: [F2] Granted pursuant to the Stock Incentive Plan. [Transaction #3] Security: Common Stock Date: 2026-03-23 | Code: F (Payment of exercise/tax) Shares: -5,896 | Price: $24.82 Total Value: $146,338.72 Shares Owned After: 684,158 | Ownership: D (Direct) --- Footnotes (Complete Index) --- F1: Represents additional shares granted as a result of the certification of a performance condition for the performance shares granted on March 20, 2023, which will vest on March 23, 2026. F2: Granted pursuant to the Stock Incentive Plan. --- Signature --- /s/ /s/ Harold M. Messmer, Jr. (2026-03-23)