<SEC-DOCUMENT>0000950170-24-101993-index.html : 20240829
<SEC-HEADER>0000950170-24-101993.hdr.sgml : 20240829
<ACCEPTANCE-DATETIME>20240829183607
ACCESSION NUMBER:		0000950170-24-101993
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240827
FILED AS OF DATE:		20240829
DATE AS OF CHANGE:		20240829

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Shukla Sath
		CENTRAL INDEX KEY:			0001782817
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38266
		FILM NUMBER:		241265270

	MAIL ADDRESS:	
		STREET 1:		C/O ZIOPHARM ONCOLOGY, INC.
		STREET 2:		ONE FIRST AVENUE, PARRIS BUILDING #34
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02129

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Spero Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001701108
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		675 MASSACHUSETTS AVENUE
		STREET 2:		14TH FLOOR
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
		BUSINESS PHONE:		857-242-1600

	MAIL ADDRESS:	
		STREET 1:		675 MASSACHUSETTS AVENUE
		STREET 2:		14TH FLOOR
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Spero Therapeutics, LLC
		DATE OF NAME CHANGE:	20170316
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
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<TEXT>
Document 1 - file: ownership.html

Document 1 - RAW XML: ownership.xml

</DOCUMENT>
</SEC-DOCUMENT>