X0306 4 2022-02-23 0 0001538927 Forma Therapeutics Holdings, Inc. FMTX 0001814695 Wadlinger Mary E. C/O FORMA THERAPEUTICS HOLDINGS, INC. 300 NORTH BEACON STREET, SUITE 501 WATERTOWN MA 02472 0 1 0 0 See Remarks Common Stock 2022-02-23 4 S 0 4684 9.7775 D 134521 D Represents shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units, and does not represent a discretionary trade by the reporting person. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $9.61 to $10.005. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request. Officer Title: SVP, Corporate Affairs and Chief Human Resources Officer In a Form 4 filed by the reporting person on March 2, 2021, the box indicating "no longer subject to Section 16" was inadvertently checked. The reporting person has remained subject to Section 16, and all changes in beneficial ownership subsequent to such Form 4 have been properly reported on a timely basis. /s/ Jeannette Potts, as Attorney-in-Fact 2022-02-25