# EDGAR Filing Document

**Accession Number:** 0001805890
**File Stem:** 9999999995-23-000645
**Filing Date:** 2023-3
**Character Count:** 1270
**Document Hash:** 80098d2f4a8e6f46c41a9f8611dddda9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-23-000645.hdr.sgml**: 20230324

**ACCESSION NUMBER**: 9999999995-23-000645

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230323

**DATE AS OF CHANGE**: 20230324

**EFFECTIVENESS DATE**: 20230323

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Fusion Pharmaceuticals Inc.
- **CENTRAL INDEX KEY:** 0001805890
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** Z4
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-270604
- **FILM NUMBER:** 23757569

**BUSINESS ADDRESS:**
- **STREET 1:** 270 LONGWOOD ROAD SOUTH
- **CITY:** HAMILTON
- **STATE:** A6
- **ZIP:** L8P 0A6
- **BUSINESS PHONE:** 289-799-0891

**MAIL ADDRESS:**
- **STREET 1:** 270 LONGWOOD ROAD SOUTH
- **CITY:** HAMILTON
- **STATE:** A6
- **ZIP:** L8P 0A6

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

## Notice of Effectiveness

**Date:** March 23, 2023

**Time:** 16:01:00

**Form Type:** S-3

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**CIK:** 0001805890

**Company Name:** Fusion Pharmaceuticals Inc.

**File Number:** 333-270604