X0206 3 2020-10-13 0 0001659352 Codiak BioSciences, Inc. CDAK 0001184847 WILLIAMS DOUGLAS E C/O CODIAK BIOSCIENCES, INC. 35 CAMBRIDGEPARK DRIVE, SUITE 500 CAMBRIDGE MA 02140 1 1 0 0 President & CEO Series C Preferred Stock Common Stock 9599 D Stock Option (Right to Buy) 3.29 2026-02-18 Common Stock 78162 D Stock Option (Right to Buy) 3.29 2026-02-18 Common Stock 78162 D Stock Option (Right to Buy) 3.29 2026-02-18 Common Stock 467421 D Stock Option (Right to Buy) 10.17 2028-01-31 Common Stock 187124 D Stock Option (Right to Buy) 10.25 2029-02-10 Common Stock 38377 D Each share of Series C Preferred Stock is convertible into shares of the Issuer's common stock, par value $0.0001 per share ("Common Stock") on an approximately 1-for-6.8758 basis. Upon the closing of the Issuer's initial public offering, all shares of Series C Preferred Stock will convert into shares of Common Stock of the Issuer. The Series C Preferred Stock has no expiration date. This option is fully vested and exercisable as of the date hereof. 25% of this option became vested and exercisable on January 1, 2019, with the remainder vesting in 12 equal quarterly installments thereafter. 25% of this option became vested and exercisable on February 11, 2020, with the remainder vesting in 12 equal quarterly installments thereafter. Exhibit 24 - Power of Attorney /s/ Yalonda Howze by Power of Attorney for Douglas E. Williams 2020-10-13