Timothy A. Springer - May 21, 2021 Form 4 Insider Report for SELECTA BIOSCIENCES INC (SELB)

Role: Director, 10%+ Owner
Signature: /s/ Matthew Bartholomae, Attorney-in-Fact for Timothy A. Springer
Stock symbol: SELB
Transactions as of: May 21, 2021
Transactions value $: $8,847,398
Form type: 4
Date filed: 5/25/2021, 04:27 PM
Next filing: May 26, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SELB	Common Stock	Purchase	$8.85M	+2.77M	+19.15%	$3.19	17.3M	May 21, 2021	See Footnote	F1
holding	SELB	Common Stock						7.29M	May 21, 2021	Direct
holding	SELB	Common Stock						86.4K	May 21, 2021	By wife

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

Explanation of Responses:

Id	Content
F1	Held by TAS Partners LLC. The reporting person is the managing member of TAS Partners LLC. The reporting person disclaims beneficial ownership of the securities held by TAS Partners LLC except to the extent of his pecuniary interest therein, if any.