# EDGAR Filing Document

**Accession Number:** 0002114044
**File Stem:** 9999999995-26-001409
**Filing Date:** 2026-4
**Character Count:** 1353
**Document Hash:** 1e7a16e1342430ef1ada618dd4abe914
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-26-001409.hdr.sgml**: 20260501

**ACCESSION NUMBER**: 9999999995-26-001409

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260430

**DATE AS OF CHANGE**: 20260501

**EFFECTIVENESS DATE**: 20260430

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Hemab Therapeutics Holdings, Inc.
- **CENTRAL INDEX KEY:** 0002114044
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 414241952
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-294989
- **FILM NUMBER:** 26928620

**BUSINESS ADDRESS:**
- **STREET 1:** 101 MAIN STREET
- **STREET 2:** SUITE 1220
- **CITY:** CAMBRIDGE
- **STATE:** MA
- **ZIP:** 02142
- **BUSINESS PHONE:** 45 2138 7627

**MAIL ADDRESS:**
- **STREET 1:** 101 MAIN STREET
- **STREET 2:** SUITE 1220
- **CITY:** CAMBRIDGE
- **STATE:** MA
- **ZIP:** 02142

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

## Notice of Effectiveness

**Date:** April 30, 2026

**Time:** 16:00:00

**Form Type:** S-1

---

**CIK:** 0002114044

**Company Name:** Hemab Therapeutics Holdings, Inc.

**File Number:** 333-294989