Form 4 Filing for Equillium, Inc. - Barbara Troupin Stock Option Grant

This filing details a Form 4 submission for Equillium, Inc. (NASDAQ: EQ), reporting the grant of a Director Stock Option to Barbara Troupin on May 28, 2026. The option, with an exercise price of $2.84, allows for the purchase of 70,000 shares of Common Stock. The option vests in twelve equal monthly installments starting from the grant date, with full vesting occurring by the Issuer's annual stockholders' meeting following the grant date. The option has an expiration date of May 27, 2036. This transaction is classified as an acquisition of securities by a director.