X0508 4 2025-11-17 0001851194 Ventyx Biosciences, Inc. VTYX 0001922353 Forman Mark S 12790 EL CAMINO REAL, SUITE 200 SAN DIEGO CA 92130 false true false false Chief Medical Officer false Common Stock 2025-11-17 5 A false 3000 1.03 A 6000 D The reporting person is voluntarily reporting the acquisition of shares of the Issuer's common stock pursuant to the Ventyx Biosciences, Inc. 2021 Employee Stock Purchase Plan ("2021 ESPP"), for the ESPP Purchase Period (as defined in the 2021 ESPP) of May 15, 2025 through November 14, 2025. This transaction is also exempt under Rule 16b-3(c). The relevant Offering Period (as defined in the 2021 ESPP) ended, and the shares were acquired, on the Exercise Date (as defined in the 2021 ESPP) of November 17, 2025. In accordance with the 2021 ESPP, these shares were purchased based on 85% of the closing price on May 15, 2025. /s/ Austin Rutherford, as Attorney-in-Fact 2025-11-19