Cartesian Therapeutics, Inc. — Director's Dealing 2016

Jun 30, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SELECTA BIOSCIENCES INC (SELB)
CIK: 0001453687
Period of Report: 2016-06-27

Reporting Person: RUSNANO (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-06-27	Common Stock	P	107143	$14.00	Acquired	157009	Direct
2016-06-27	Common Stock	C	799915	—	Acquired	956924	Direct
2016-06-27	Common Stock	C	208705	—	Acquired	1165629	Direct
2016-06-27	Common Stock	C	310548	—	Acquired	1476177	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-06-27	Series D Convertible Preferred Stock	$	C	2981019	Disposed		Common Stock (799915)	Direct
2016-06-27	Series SRN Convertible Preferred Stock	$	C	777777	Disposed		Common Stock (208705)	Direct
2016-06-27	Series E Convertible Preferred Stock	$	C	781322	Disposed		Common Stock (310548)	Direct

Footnotes

F1: 2,981,019 outstanding shares of Series D Convertible Preferred Stock automatically converted into 799,915 shares of Common Stock upon the closing of the Issuer's initial public offering of Common Stock and had no expiration date.

F2: 777,777 outstanding shares of Series SRN Convertible Preferred Stock automatically converted into 208,705 shares of Common Stock upon the closing of the Issuer's initial public offering of Common Stock and had no expiration date.

F3: 781,322 outstanding shares of Series E Convertible Preferred Stock automatically converted into 310,548 shares of Common Stock upon the closing of the Issuer's initial public offering of Common Stock and had no expiration date.