<SEC-DOCUMENT>0001140361-21-004903-index.html : 20210216
<SEC-HEADER>0001140361-21-004903.hdr.sgml : 20210216
<ACCEPTANCE-DATETIME>20210216120306
ACCESSION NUMBER:		0001140361-21-004903
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210216
DATE AS OF CHANGE:		20210216
GROUP MEMBERS:		MANGROVE PARTNERS
GROUP MEMBERS:		NATHANIEL AUGUST

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SELECTA BIOSCIENCES INC
		CENTRAL INDEX KEY:			0001453687
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-89550
		FILM NUMBER:		21634719

	BUSINESS ADDRESS:	
		STREET 1:		65 GROVE STREET
		CITY:			WATERTOWN
		STATE:			MA
		ZIP:			02472
		BUSINESS PHONE:		617-923-1400

	MAIL ADDRESS:	
		STREET 1:		65 GROVE STREET
		CITY:			WATERTOWN
		STATE:			MA
		ZIP:			02472

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mangrove Partners Master Fund, Ltd.
		CENTRAL INDEX KEY:			0001569227
		IRS NUMBER:				981083428
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		MAPLES CORP. SVCS, PO BOX 309
		STREET 2:		UGLAND HOUSE, S. CHURCH STREET
		CITY:			GEORGE TOWN
		STATE:			E9
		ZIP:			KY1-1104
		BUSINESS PHONE:		2128979537

	MAIL ADDRESS:	
		STREET 1:		645 MADISON AVE, 14 FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>brhc10019803_sc13ga.htm
<DESCRIPTION>SC 13G/A
<TEXT>
Document 1 - file: brhc10019803_sc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>