ACM Research, Inc. (ACMR) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Low Risk
Limited dilution potential
Last updated: May 15, 2026

Risk Assessment Details

Potential Dilution: 0.0% of current shares
Recent Dilution: 6.18% (2 years)
Historical Dilution Factor: minimal recent dilution
Outstanding Shares
66M
Potential Supply
0
Additional shares possible
Splits
None
Past 2 years

Summary

ACMR currently has 65.8M outstanding shares. with minimal authorized share overhang for future dilution. The company has minimally diluted shareholders by 6.18% over the past 2 years.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 15, 2026

8-K filing: ACM Research, Inc. consummated a registered direct offering of 2,884,615 shares of Class A common stock at a price of $52.00 per share, resulting in net proceeds of approximately $149.85 million. ($150.0M proceeds)

66M 0
May 08, 2026

10-Q filing | 65.8M shares outstanding

66M 0
Jan 30, 2026

8-K filing: ACM Research, Inc. intends to sell 4,801,648 shares of its operating subsidiary, ACM Research (Shanghai), Inc., representing approximately 1.34% of the Company's ownership interest in ACM Shanghai and approximately 1% of the total shares outstanding of ACM Shanghai, through an inquiry-based transfer plan.

64M 0
Nov 06, 2025

10-Q filing | 64.4M shares outstanding

64M 0
Aug 07, 2025

10-Q filing | 64.0M shares outstanding

64M 0
Jun 30, 2025

8-K filing: ACM Research (Shanghai), Inc. received registration approval from the China Securities Regulatory Commission for its proposed private offering of up to 44.1 million ordinary shares, with expected gross proceeds of up to RMB 4.5 billion (approximately $625 million). ($625.0M proceeds)

63M 0
May 12, 2025

10-Q filing | 63.3M shares outstanding

63M 0
Mar 03, 2025

10-K filing | 62.2M shares outstanding

62M 0
Nov 07, 2024

10-Q filing | 62.5M shares outstanding

63M 0
Aug 07, 2024

10-Q filing | 62.2M shares outstanding

62M 0
May 08, 2024

10-Q filing | 61.4M shares outstanding

61M 0
Feb 28, 2024

10-K filing | 60.2M shares outstanding

60M 0
Nov 08, 2023

10-Q filing | 60.2M shares outstanding

60M 0
Aug 07, 2023

10-Q filing | 59.9M shares outstanding

60M 0
May 09, 2023

10-Q filing | 59.7M shares outstanding

60M 0
Mar 02, 2023

10-K filing | 59.2M shares outstanding

59M 0
Nov 08, 2022

10-Q filing | 59.4M shares outstanding

59M 0
Aug 09, 2022

10-Q filing | 59.2M shares outstanding

59M 0
May 09, 2022

10-Q filing | 58.8M shares outstanding

59M 0
Mar 23, 2022
Stock Split

8-K filing: Stock split 2-for-1 | Outstanding: 19,218,236 → 38,436,472

38M 0
Mar 01, 2022

10-K filing | 19.2M shares outstanding

19M 0
Nov 08, 2021

10-Q filing | 19.4M shares outstanding

19M 0
Aug 06, 2021

10-Q filing | 19.1M shares outstanding

19M 0
May 07, 2021

10-Q filing | 18.8M shares outstanding

19M 0
Mar 01, 2021

10-K filing | 18.2M shares outstanding

18M 0
Nov 09, 2020

10-Q filing | 18.2M shares outstanding

18M 0
Aug 10, 2020

10-Q filing | 16.3M shares outstanding

16M 1.1M
Jul 07, 2020

8-K filing: ACM Shanghai became a limited partner of Qingdao Fortune-Tech Xinxing Capital Partnership (L.P.) and participated in the offering of Semiconductor Manufacturing International Corporation (SMIC), acquiring an aggregate of 80,589,949 shares at RMB 27.46 ($3.89) per share. ($315.0M proceeds)

16M 1.3M
May 26, 2020

S-1 filing: The filing relates to the potential sale of up to 1,324,673 shares of Class A common stock upon exercise of stock options granted between May 2011 and September 2015.

16M 1.3M
May 08, 2020

10-Q filing | 16.0M shares outstanding

16M 0
Mar 24, 2020

10-K filing | 15.8M shares outstanding

16M 0
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