# EDGAR Filing Document

**Accession Number:** 0001576885
**File Stem:** 9999999995-26-001054
**Filing Date:** 2026-4
**Character Count:** 1358
**Document Hash:** 02053ab3219ec4132215d522733728e1
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-26-001054.hdr.sgml**: 20260402

**ACCESSION NUMBER**: 9999999995-26-001054

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260401

**DATE AS OF CHANGE**: 20260402

**EFFECTIVENESS DATE**: 20260401

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Acumen Pharmaceuticals, Inc.
- **CENTRAL INDEX KEY:** 0001576885
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 364108129
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-294649
- **FILM NUMBER:** 26830460

**BUSINESS ADDRESS:**
- **STREET 1:** 1210-1220 WASHINGTON STREET
- **STREET 2:** SUITE 210
- **CITY:** NEWTON
- **STATE:** MA
- **ZIP:** 02465
- **BUSINESS PHONE:** 617-344-4190

**MAIL ADDRESS:**
- **STREET 1:** 1210-1220 WASHINGTON STREET
- **STREET 2:** SUITE 210
- **CITY:** NEWTON
- **STATE:** MA
- **ZIP:** 02465

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

## Notice of Effectiveness

**Date:** April 1, 2026

**Time:** 16:00:00

**Form Type:** S-3

---

**CIK:** 0001576885

**Company Name:** Acumen Pharmaceuticals, Inc.

**File Number:** 333-294649