Carsten Brunn - 01 Jun 2022 Form 4 Insider Report for SELECTA BIOSCIENCES INC (RNAC)

Role: President and CEO, Director
Signature: /s/ Matthew Bartholomae, Attorney-in-Fact for Carsten Brunn
Issuer symbol: RNAC
Transactions as of: 01 Jun 2022
Net transactions value: $0
Form type: 4
Filing time: 03 Jun 2022, 16:44:19 UTC
Previous filing: 03 Mar 2022
Next filing: 30 Jun 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SELB	Common Stock	Options Exercise	$0	+10,938	+2.1%	$0.000000	534,390	01 Jun 2022	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SELB	Restricted Stock Units	Options Exercise	$0	-10,938	-33%	$0.000000	21,875	01 Jun 2022	Common Stock	10,938		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a contingent right to receive one share of common stock.
F2	This restricted stock unit vested as to 25% on December 1, 2019 and has vested, and will continue to vest, as to an additional 8.33% each quarter thereafter until fully vested. The restricted stock units have no expiration date.