Company · CIK 1576885

# Acumen Pharmaceuticals, Inc.

| CIK | [1576885](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001576885) (SEC EDGAR) |
| --- | --- |
| Industry (SIC) | 2836 — Biological Products, (No Diagnostic Substances) |
| Incorporated in | DE |
| Business address | MA |
| Listed | ABOS (Nasdaq) |
| First annual or quarterly report | 2021-08-16 |

## Offerings

 4 registrations

| Registration | Label and status | First filed | Last event | Filings |
| --- | --- | --- | --- | --- |
| 333-294649 | Shelf Effective | 2026-03-26 | 2026-04-01 | 2 |
| 333-278280 | Shelf Effective | 2024-03-27 | 2025-11-13 | 3 |
| 333-266004 | Shelf Effective | 2022-07-01 | 2023-07-20 | 5 |
| 333-256945 | IPO Final prospectus | 2021-06-09 | 2021-07-02 | 4 |

## Filings

 15

| Filed | Filing | Registration | Accession |
| --- | --- | --- | --- |
| 2026-04-01 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1576885/999999999526001054/9999999995-26-001054-index.htm) Declared effective | 333-294649 | 9999999995-26-001054 |
| 2026-03-26 | [S-3](https://www.sec.gov/Archives/edgar/data/1576885/000162828026021442/0001628280-26-021442-index.htm) Shelf registered | 333-294649 | 0001628280-26-021442 |
| 2025-11-13 | [424B5](https://www.sec.gov/Archives/edgar/data/1576885/000162828025051852/0001628280-25-051852-index.htm) Shelf takedown | 333-278280 | 0001628280-25-051852 |
| 2024-04-24 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1576885/999999999524001108/9999999995-24-001108-index.htm) Declared effective | 333-278280 | 9999999995-24-001108 |
| 2024-03-27 | [S-3](https://www.sec.gov/Archives/edgar/data/1576885/000162828024013290/0001628280-24-013290-index.htm) Shelf registered | 333-278280 | 0001628280-24-013290 |
| 2023-07-20 | [424B5](https://www.sec.gov/Archives/edgar/data/1576885/000119312523190497/0001193125-23-190497-index.htm) Shelf takedown | 333-266004 | 0001193125-23-190497 |
| 2023-07-17 | [424B5](https://www.sec.gov/Archives/edgar/data/1576885/000119312523188165/0001193125-23-188165-index.htm) Shelf takedown | 333-266004 | 0001193125-23-188165 |
| 2023-04-27 | [424B5](https://www.sec.gov/Archives/edgar/data/1576885/000119312523120009/0001193125-23-120009-index.htm) Shelf takedown | 333-266004 | 0001193125-23-120009 |
| 2022-07-08 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1576885/999999999522002006/9999999995-22-002006-index.htm) Declared effective | 333-266004 | 9999999995-22-002006 |
| 2022-07-01 | [S-3](https://www.sec.gov/Archives/edgar/data/1576885/000119312522187296/0001193125-22-187296-index.htm) Shelf registered | 333-266004 | 0001193125-22-187296 |
| 2021-07-02 | [424B4](https://www.sec.gov/Archives/edgar/data/1576885/000119312521207605/0001193125-21-207605-index.htm) Final prospectus | 333-256945 | 0001193125-21-207605 |
| 2021-06-30 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1576885/999999999521002605/9999999995-21-002605-index.htm) Declared effective | 333-256945 | 9999999995-21-002605 |
| 2021-06-24 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1576885/000119312521198037/0001193125-21-198037-index.htm) Amendment | 333-256945 | 0001193125-21-198037 |
| 2021-06-09 | [S-1](https://www.sec.gov/Archives/edgar/data/1576885/000119312521186863/0001193125-21-186863-index.htm) Registration filed | 333-256945 | 0001193125-21-186863 |
| 2021-04-12 | [DRS](https://www.sec.gov/Archives/edgar/data/1576885/000095012321004463/0000950123-21-004463-index.htm) Draft made public | 377-04647 | 0000950123-21-004463 |

[All filings of this company](https://equitycapital.markets/filings?cik=1576885) · [CSV](https://equitycapital.markets/filings.csv?cik=1576885)

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Source page: https://equitycapital.markets/company/1576885 · Data: U.S. SEC EDGAR · CC BY 4.0