<SEC-DOCUMENT>0000093751-24-000098-index.html : 20240123
<SEC-HEADER>0000093751-24-000098.hdr.sgml : 20240123
<ACCEPTANCE-DATETIME>20240123103720
ACCESSION NUMBER:		0000093751-24-000098
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20240123
DATE AS OF CHANGE:		20240123

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			2seventy bio, Inc.
		CENTRAL INDEX KEY:			0001860782
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				863658454
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-93049
		FILM NUMBER:		24550890

	BUSINESS ADDRESS:	
		STREET 1:		60 BINNEY STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02210
		BUSINESS PHONE:		339-499-9300

	MAIL ADDRESS:	
		STREET 1:		60 BINNEY STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02210

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			STATE STREET CORP
		CENTRAL INDEX KEY:			0000093751
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		ORGANIZATION NAME:           	02 Finance
		IRS NUMBER:				042456637
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		1 CONGRESS STREET
		STREET 2:		SUITE 1
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02114
		BUSINESS PHONE:		617 786-3000

	MAIL ADDRESS:	
		STREET 1:		1 CONGRESS STREET
		STREET 2:		SUITE 1
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02114

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STATE STREET Corp
		DATE OF NAME CHANGE:	20090218

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STATE STREET CORP
		DATE OF NAME CHANGE:	19970424

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STATE STREET BOSTON FINANCIAL CORP
		DATE OF NAME CHANGE:	19780525
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>2seventy_bio_Inc.txt
<TEXT>
Document 1 - file: 2seventy_bio_Inc.txt

</DOCUMENT>
</SEC-DOCUMENT>