    <SEC-DOCUMENT>0001827506-25-000048-index.html : 20250421
    <SEC-HEADER>0001827506-25-000048.hdr.sgml : 20250421
    <ACCEPTANCE-DATETIME>20250421160939
    ACCESSION NUMBER:		0001827506-25-000048
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20250421
    DATE AS OF CHANGE:		20250421

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Tourmaline Bio, Inc.
    		CENTRAL INDEX KEY:			0001827506
    		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
    		ORGANIZATION NAME:           	03 Life Sciences
    		EIN:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-40384
    		FILM NUMBER:		25853226

    	BUSINESS ADDRESS:
    		STREET 1:		27 WEST 24TH STREET
    		STREET 2:		SUITE 702
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10010
    		BUSINESS PHONE:		646-481-9832

    	MAIL ADDRESS:
    		STREET 1:		27 WEST 24TH STREET
    		STREET 2:		SUITE 702
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10010

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Talaris Therapeutics, Inc.
    		DATE OF NAME CHANGE:	20201007
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>a04212025defa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: a04212025defa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>trml2025noticepage1.jpg
    <TEXT>
    Document 2 - file: trml2025noticepage1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>trml2025noticepage2.jpg
    <TEXT>
    Document 3 - file: trml2025noticepage2.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>