Cartesian Therapeutics, Inc. — Director's Dealing 2017

Mar 27, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SELECTA BIOSCIENCES INC (SELB)
CIK: 0001453687
Period of Report: 2017-03-23

Reporting Person: Farokhzad Omid (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-03-23	Common Stock	M	51981	$3.44	Acquired	179985	Direct
2017-03-23	Common Stock	M	8019	$7.02	Acquired	188004	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-03-23	Stock Option (right to buy)	$3.44	M	51981	Disposed	2022-01-23	Common Stock (51981)	Direct
2017-03-23	Stock Option (right to buy)	$7.02	M	8019	Disposed	2026-03-08	Common Stock (8019)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	25626	Indirect
Common Stock	202051	Indirect

Footnotes

F1: These securities are held by BioDynamics Core, L.P., which is managed by BioDynamics, LLC, of which the Reporting Person is a member. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of any pecuniary interest therein, and the filing of this report is not an admission that the Reporting Person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

F2: These securities are held by SAF-SEL Trust, for which the Reporting Person's spouse serves as a trustee. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of any pecuniary interest therein, and the filing of this report is not an admission that the Reporting Person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

F3: All shares underlying this option are fully vested.

F4: This option vests in 48 substantially equal monthly installments beginning on January 1, 2016.