X0508 4 2026-01-02 0001817713 Janux Therapeutics, Inc. JANX 0002005618 DiRaimondo Thomas C/O JANUX THERAPEUTICS, INC. 10955 VISTA SORRENTO PARKWAY, SUITE 200 SAN DIEGO CA 92130 false true false false Chief Scientific Officer 0 Common Stock 2026-01-02 4 S 0 2505 13.73 D 124425 D Common Stock 2026-01-02 4 A 0 31400 0 A 155825 D Stock option (right to buy) 13.65 2026-01-02 4 A 0 109900 0 A 2036-01-01 Common Stock 109900 109900 D The shares were automatically sold to cover tax withholding obligations associated with the vesting of restricted stock units. Includes 4,049 shares acquired under the Issuer's 2021 Employee Stock Purchase Plan (the "Plan") on May 15, 2025. Also, on January 3, 2025, the Reporting Person filed a Form 4 which inadvertently reported an aggregate of 7,781 shares acquired under the Plan. In fact, 5,432 of the shares were already reported as acquired by the Reporting Person under the Plan on a Form 3 filed on January 3, 2024 and 1,406 of the shares were reported as acquired by the Reporting Person under the Plan on a Form 4 filed on September 27, 2024. Represents the grant of restricted stock units ("RSUs"), each of which represents a contingent right to receive one share of the Issuer's common stock. The RSUs vest in four equal annual installments beginning on January 1, 2027. 25% of the shares subject to the option vest on January 1, 2027 and the balance will vest in equal monthly installments thereafter over a three year period. /s/ James Pennington, Attorney-in-Fact 2026-01-02