# EDGAR Filing Document

**Accession Number:** 0001681087
**File Stem:** 9999999995-25-002190
**Filing Date:** 2025-7
**Character Count:** 1565
**Document Hash:** 7421bf8f98695923290eaa87178580f8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-25-002190.hdr.sgml**: 20250709

**ACCESSION NUMBER**: 9999999995-25-002190

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250708

**DATE AS OF CHANGE**: 20250709

**EFFECTIVENESS DATE**: 20250708

**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:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-280909
- **FILM NUMBER:** 251112194

**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

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** July 8, 2025

**Accession Number:** 0001193125-25-156209

**Form Type:** POS AM

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**CIK:** 0001681087

**Company Name:** Tectonic Therapeutic, Inc.

**File Number:** 333-280909