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Cartesian Therapeutics, Inc. Director's Dealing 2016

Jun 22, 2016

33483_dirs_2016-06-21_55e29ce8-25db-4c1d-8b15-c7e234026cc7.zip

Director's Dealing

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SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: SELECTA BIOSCIENCES INC (SELB)
CIK: 0001453687
Period of Report: 2016-06-21

Reporting Person: Polaris Venture Management Co. V, L.L.C. (10% Owner)
Reporting Person: Polaris Venture Partners V, L.P. (10% Owner)
Reporting Person: Polaris Venture Partners Entrepreneurs' Fund V, L.P. (10% Owner)
Reporting Person: Polaris Venture Partners Founders' Fund V, L.P. (10% Owner)
Reporting Person: Polaris Venture Partners Special Founders' Fund V, L.P. (10% Owner)

Holdings (Non-Derivative)

Security Shares Ownership
Common Stock 765 Indirect
Common Stock 268 Indirect
Common Stock 392 Indirect
Common Stock 39317 Indirect

Holdings (Derivative)

Security Exercise Price Expiration Underlying Shares Ownership
Series A Convertible Preferred Stock $ Common Stock (6494) Indirect
Series A Convertible Preferred Stock $ Common Stock (2282) Indirect
Series A Convertible Preferred Stock $ Common Stock (3332) Indirect
Series A Convertible Preferred Stock $ Common Stock (333207) Indirect
Series B Convertible Preferred Stock $ Common Stock (11875) Indirect
Series B Convertible Preferred Stock $ Common Stock (4174) Indirect
Series B Convertible Preferred Stock $ Common Stock (6093) Indirect
Series B Convertible Preferred Stock $ Common Stock (609316) Indirect
Series C Convertible Preferred Stock $ Common Stock (4420) Indirect
Series C Convertible Preferred Stock $ Common Stock (1553) Indirect
Series C Convertible Preferred Stock $ Common Stock (2267) Indirect
Series C Convertible Preferred Stock $ Common Stock (226801) Indirect
Series D Convertible Preferred Stock $ Common Stock (4647) Indirect
Series D Convertible Preferred Stock $ Common Stock (1632) Indirect
Series D Convertible Preferred Stock $ Common Stock (2384) Indirect
Series D Convertible Preferred Stock $ Common Stock (238470) Indirect
Series E Convertible Preferred Stock $ Common Stock (3078) Indirect
Series E Convertible Preferred Stock $ Common Stock (1082) Indirect
Series E Convertible Preferred Stock $ Common Stock (1579) Indirect
Series E Convertible Preferred Stock $ Common Stock (157957) Indirect
Common Warrants $17.55 2018-07-24 Common Stock (389) Indirect
Common Warrants $17.55 2018-07-24 Common Stock (136) Indirect
Common Warrants $17.55 2018-07-24 Common Stock (199) Indirect
Common Warrants $17.55 2018-07-24 Common Stock (19990) Indirect

Footnotes

F1: The reportable securities are owned directly by Polaris Venture Partners Entrepreneurs' Fund V, L.P. ("PVPE V"). Polaris Venture Management Co. V, L.L.C. ("PVM V") is the general partner of PVPE V. PVM V disclaims beneficial ownership of these securities and this report shall not be deemed an admission that PVM V is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of its pecuniary interest therein.

F2: Each of Jonathan A. Flint ("Flint") and Terrance G. McGuire ("McGuire") are the managing members of PVM V. Amir Nashat ("Nashat"), who is a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint, McGuire and Nashat, in their respective capacities with regard to PVM V, may be deemed to have shared voting and dispositive power of the shares held by PVPE V. Each of Flint, McGuire and Nashat disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interest therein.

F3: The reportable securities are owned directly by Polaris Venture Partners Founders' Fund V, L.P. ("PVPFF V"). PVM V is the general partner of PVPFF V. PVM V disclaims beneficial ownership of these securities and this report shall not be deemed an admission that PVM V is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of its pecuniary interest therein.

F4: Each of Flint and McGuire are the managing members of PVM V. Nashat, who is a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint, McGuire and Nashat, in their respective capacities with regard to PVM V, may be deemed to have shared voting and dispositive power of the shares held by PVPFF V. Each of Flint, McGuire and Nashat disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interest therein.

F5: The reportable securities are owned directly by Polaris Venture Partners Special Founders' Fund V, L.P. ("PVPSFF V"). PVM V is the general partner of PVPSFF V. PVM V disclaims beneficial ownership of these securities and this report shall not be deemed an admission that PVM V is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of its pecuniary interest therein.

F6: Each of Flint and McGuire are the managing members of PVM V. Nashat, who is a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint, McGuire and Nashat, in their respective capacities with regard to PVM V, may be deemed to have shared voting and dispositive power of the shares held by PVPSFF V. Each of Flint, McGuire and Nashat disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interest therein.

F7: The reportable securities are owned directly by Polaris Venture Partners V, L.P. ("PVP V"). PVM V is the general partner of PVP V. PVM V disclaims beneficial ownership of these securities and this report shall not be deemed an admission that PVM V is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of its pecuniary interest therein.

F8: Each of Flint and McGuire are the managing members of PVM V. Nashat, who is a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint, McGuire and Nashat, in their respective capacities with regard to PVM V, may be deemed to have shared voting and dispositive power of the shares held by PVP V. Each of Flint, McGuire and Nashat disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interest therein.

F9: The preferred stock is convertible at any time, at the holder's election and has no expiration date. The preferred stock will automatically convert into common stock upon the closing of the Issuer's initial public offering.