X0609 4 2026-05-22 0 0001873835 Immix Biopharma, Inc. IMMX 0001342502 BUCHAN JANE false C/O IMMIX BIOPHARMA, INC. 11400 WEST OLYMPIC BLVD., SUITE 200 LOS ANGELES CA 90064 1 0 0 0 0 Common Stock 2026-05-22 4 A 0 6250 0 A 28705 D Stock Option (Right to Buy) 8.78 2026-05-22 4 A 0 12500 0 A 2036-05-22 Common Stock 12500 12500 D The Reporting Person was granted 6,250 restricted stock units ("RSUs") pursuant to the Issuer's 2021 Equity Incentive Plan, which RSUs will vest in full on the earlier of (i) the one-year anniversary of the date of grant, and (ii) the date that the Issuer's 2027 annual meeting of stockholders (the "2027 Annual Meeting") is held, subject to the Reporting Person's continued service with the Issuer. The stock option will vest in substantially equal monthly installments over the 12 months following the date of grant (or, in the event the 2027 Annual Meeting occurs prior to the first anniversary of the date of grant, any remaining unvested portion of the stock option will vest on the date of such 2027 Annual Meeting), subject to the Reporting Person's continued service on the Issuer's Board through the applicable vesting date. /s/ Ilya Rachman as Attorney-In-Fact for Jane Buchan 2026-05-29