<SEC-DOCUMENT>0001193125-25-156209-index.html : 20250707
<SEC-HEADER>0001193125-25-156209.hdr.sgml : 20250707
<ACCEPTANCE-DATETIME>20250707162306
ACCESSION NUMBER:		0001193125-25-156209
CONFORMED SUBMISSION TYPE:	POS AM
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20250707
DATE AS OF CHANGE:		20250707

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Tectonic Therapeutic, Inc.
		CENTRAL INDEX KEY:			0001681087
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				810710585
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		POS AM
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-280909
		FILM NUMBER:		251108326

	BUSINESS ADDRESS:	
		STREET 1:		490 ARSENAL WAY
		STREET 2:		SUITE 210
		CITY:			WATERTOWN
		STATE:			MA
		ZIP:			02472
		BUSINESS PHONE:		(339) 666-3320

	MAIL ADDRESS:	
		STREET 1:		490 ARSENAL WAY
		STREET 2:		SUITE 210
		CITY:			WATERTOWN
		STATE:			MA
		ZIP:			02472

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AVROBIO, Inc.
		DATE OF NAME CHANGE:	20180131

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AvroBio, Inc.
		DATE OF NAME CHANGE:	20160729
</SEC-HEADER>
<DOCUMENT>
<TYPE>POS AM
<SEQUENCE>1
<FILENAME>d948669dposam.htm
<DESCRIPTION>POS AM
<TEXT>
Document 1 - file: d948669dposam.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>2
<FILENAME>d948669dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 2 - file: d948669dex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g948669g04p44.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g948669g04p44.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g948669g29p29.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g948669g29p29.jpg

</DOCUMENT>
</SEC-DOCUMENT>