Acumen Pharmaceuticals, Inc. (ABOS) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

High Risk
Significant dilution risk
Last updated: March 26, 2026

Risk Assessment Details

Potential Dilution: 73.84% of current shares
Recent Dilution: 20.15% (2 years)
Historical Dilution Factor: moderate recent dilution
Outstanding Shares
72M
Potential Supply
53M
Additional shares possible
Splits
None
Past 2 years

Summary

ABOS currently has 72.2M outstanding shares. with significant dilution risk as 53.3M authorized shares could dilute existing holders by 73.8%. The company has diluted shareholders by 20.15% over the past 2 years through share issuances.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
Mar 26, 2026

10-K filing | 72.2M shares outstanding

72M 53M
Mar 16, 2026

8-K filing: Acumen Pharmaceuticals, Inc. entered into a Securities Purchase Agreement to sell 10,833,331 shares of common stock at $3.30 per share in a private placement, with gross proceeds expected to be approximately $35.75 million. ($35.75M proceeds)

61M 53M
Nov 12, 2025

10-Q filing | 60.6M shares outstanding

61M 53M
Aug 12, 2025

10-Q filing | 60.6M shares outstanding

61M 53M
May 13, 2025

10-Q filing | 60.5M shares outstanding

61M 53M
Mar 27, 2025

10-K filing | 60.0M shares outstanding

60M 53M
Nov 12, 2024

10-Q filing | 60.1M shares outstanding

60M 53M
Aug 13, 2024

10-Q filing | 60.1M shares outstanding

60M 53M
May 14, 2024

10-Q filing | 59.8M shares outstanding

60M 53M
Mar 27, 2024

S-3 filing: This S-3 filing describes a shelf registration for the potential issuance of common stock, preferred stock, debt securities and/or warrants.

60M 53M
Mar 26, 2024

10-K filing | 60.1M shares outstanding

60M 53M
Nov 13, 2023

10-Q filing | 54.2M shares outstanding

54M 53M
Aug 08, 2023

10-Q filing | 57.9M shares outstanding

58M 53M
May 09, 2023

10-Q filing | 41.0M shares outstanding

41M 53M
Mar 27, 2023

10-K filing | 40.6M shares outstanding

41M 53M
Nov 14, 2022

10-Q filing | 40.5M shares outstanding

41M 53M
Aug 15, 2022

10-Q filing | 40.5M shares outstanding

40M 53M
Jul 01, 2022

S-3 filing: The company is filing an S-3 to offer and sell up to $200,000,000 of any combination of common stock, preferred stock, and debt securities, and may use the proceeds primarily for clinical trials, research and development, and working capital.

40M 53M
May 16, 2022

10-Q filing | 40.5M shares outstanding

41M 130K
Mar 28, 2022

10-K filing | 40.5M shares outstanding

40M 130K
Nov 15, 2021

10-Q filing | 40.5M shares outstanding

40M 130K
Aug 16, 2021

10-Q filing | 40.5M shares outstanding

40M 130K
Jun 24, 2021

S-1/A filing: This filing relates to the sale of unregistered securities by the company since January 2018, including issuances of common stock, convertible notes, and warrants.

N/A 130K
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