X0206 3 2018-12-07 0 0001682852 Moderna, Inc. MRNA 0001508051 Flagship Ventures Fund IV General Partner LLC 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142 1 0 1 0 0001400240 Flagship Pioneering Inc. 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142 0 0 1 0 0001642578 Flagship VentureLabs IV, LLC 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142 0 0 1 0 0001503559 Flagship Ventures Fund IV, L.P. 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142 0 0 1 0 0001590973 Flagship Ventures Fund IV-Rx, L.P. 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142 0 0 1 0 0001222012 AFEYAN NOUBAR 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142 1 0 1 0 0001255927 KANIA EDWIN M JR 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142 0 0 1 0 Common Stock 11460435 I By: Flagship Venture Labs IV LLC Common Stock 3924 I By: Flagship Pioneering, Inc. Series A Preferred Stock Common Stock 7292145 I By: Flagship Ventures Fund IV, LP Series A Preferred Stock Common Stock 1823036 I By: Flagship Ventures Fund IV-Rx, LP Series B Preferred Stock Common Stock 24782551 I By: Flagship Ventures Fund IV, LP Series B Preferred Stock Common Stock 6195632 I By: Flagship Ventures Fund IV-Rx, LP Series C Preferred Stock Common Stock 5713739 I By: Flagship Ventures Fund IV, LP Series C Preferred Stock Common Stock 1428432 I By: Flagship Ventures Fund IV-Rx, LP Series D Preferred Stock Common Stock 85989 I By: Flagship Ventures Fund IV, LP Series D Preferred Stock Common Stock 21496 I By: Flagship Ventures Fund IV-Rx, LP Stock Option (Right to Buy) 19.15 2026-08-10 Common Stock 9263 I By: Flagship Pioneering, Inc. Stock Option (Right to Buy) 10.90 2026-08-10 Common Stock 23853 I By: Flagship Pioneering, Inc. Stock Option (Right to Buy) 12.21 2027-02-23 Common Stock 42201 D Stock Option (Right to Buy) 14.22 2028-02-28 Common Stock 40307 D Shares held by Flagship VentureLabs IV LLC ("VentureLabs IV"). Flagship Ventures Fund IV, L.P. ("Flagship Fund IV") is a member of VentureLabs IV and also serves as its manager. Flagship Ventures Fund IV General Partner LLC ("Flagship Fund IV GP") is the general partner of Flagship Fund IV. Noubar B. Afeyan, Ph.D. and Edwin M. Kania, Jr. are the managers of Flagship Fund IV GP. While Mr. Kania is retired from Flagship Pioneering, Inc., ("Pioneering") he continues to serve as a manager of Flagship Fund IV GP. Each of the reporting persons except for VentureLabs IV disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein. Securities held by Pioneering. Noubar B. Afeyan, Ph.D. is the CEO and a stockholder of Pioneering. Each of the reporting persons except for Pioneering disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein. Each share of Series A Preferred Stock is convertible into shares of the Issuer's common stock, $0.0001 par value per share ("Common Stock") based on an applicable conversion ratio of 0.45576. Upon the closing of the Issuer's initial public offering, all shares of Series A Preferred Stock will convert into shares of Common Stock of the Issuer. The Series A Preferred Stock has no expiration date. Shares held by Flagship Fund IV. Flagship Fund IV GP is the general partner of Flagship Fund IV. Noubar B. Afeyan, Ph.D. and Edwin M. Kania, Jr. are the managers of Flagship Fund IV GP. While Mr. Kania is retired from Pioneering, he continues to serve as the manager of Flagship Fund IV GP. Each of the reporting persons except for Flagship Fund IV disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein. Shares held by Flagship Ventures Fund IV-Rx, L.P. ("Flagship Fund IV-Rx"). Flagship Fund IV GP is the general partner of Flagship IV-Rx. Noubar B. Afeyan, Ph.D. and Edwin M. Kania, Jr. are the managers of Flagship Fund IV GP. While Mr. Kania is retired from Pioneering, he continues to serve as the manager of Flagship Fund IV GP. Each of the reporting persons except for Flagship Fund IV-Rx disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein. Each share of Series B Preferred Stock is convertible into shares of the Issuer's Common Stock based on an applicable conversion ratio of 0.45457. Upon the closing of the Issuer's initial public offering, all shares of Series B Preferred Stock will convert into shares of Common Stock of the Issuer. The Series B Preferred Stock has no expiration date. Each share of Series C Preferred Stock is convertible into shares of the Issuer's Common Stock based on an applicable conversion ratio of 0.45853. 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. Each share of Series D Preferred Stock is convertible into shares of the Issuer's Common Stock based on an applicable conversion ratio of 0.45854. Upon the closing of the Issuer's initial public offering, all shares of Series D Preferred Stock will convert into shares of Common Stock of the Issuer. The Series D Preferred Stock has no expiration date. This option is held by Pioneering and is fully vested and exercisable. Each of the reporting persons except for Pioneering disclaims beneficial ownership of these securities except to the extent of his or its pecuniary interest therein. This option is fully vested and exercisable. Each of the reporting persons except for Mr. Afeyan disclaims beneficial ownership of these securities except to the extent of his or its pecuniary interest therein. This option will become fully vested and exercisable on February 28, 2019. Each of the reporting persons except for Mr. Afeyan disclaims beneficial ownership of these securities except to the extent of his or its pecuniary interest therein. This option is held by Noubar B. Afeyan, Ph.D. All other reporting persons disclaim beneficial ownership of these securities except to the extent of his or its pecuniary interest therein. Flagship Pioneering, Inc., By: /s/ Noubar B. Afeyan, Name: Noubar B. Afeyan, Ph.D., Title: Manager 2018-12-07 Flagship Ventures Fund IV General Partner LLC, By: /s/ Noubar B. Afeyan, Name: Noubar B. Afeyan, Ph.D., Title: Manager 2018-12-07 Flagship VentureLabs IV LLC, By: Flagship Ventures Fund IV, L.P., its manager, By: Flagship Ventures Fund IV General Partner LLC, its general partner, By: /s/ Noubar B. Afeyan, Name: Noubar B. Afeyan, Ph.D., Title: Manager 2018-12-07 Flagship Ventures Fund IV, L.P., By: Flagship Ventures Fund IV General Partner LLC, its general partner, By: /s/ Noubar B. Afeyan, Name: Noubar B. Afeyan, Ph.D., Title: Manager 2018-12-07 Flagship VentureLabs IV-Rx Fund, L.P., By: Flagship Ventures Fund V General Partner LLC, its general partner, By: /s/ Noubar B. Afeyan, Name: Noubar B. Afeyan, Ph.D., Title: Manager 2018-12-07 /s/ Noubar B. Afeyan, Noubar B. Afeyan 2018-12-07 /s/ Edwin M. Kania Jr., Edwin M. Kania Jr. 2018-12-07