ACM Research, Inc. (ACMR): Weighted Average Diluted Shares

Annual figures by period end, from SEC filings.

Stock splits: 3-for-1, first reflected in a filing dated 2022-05-09. Figures are as filed: per-share figures and share counts last reported before a split are on the old share basis, so changes and growth rates across a split are not shown. Splits are read from the filings' own restatements, so a share conversion in a merger or reorganization shows up the same way.

67.31M

Year ended 2025-12-31

+1.0%

3-year compound annual growth

+1.2%

5-year compound annual growth

2016-12-31 Weighted Average Diluted Shares (shares) 2025-12-31

Paler bars were last filed before a stock split, on the old share basis.

Period ended	Weighted Average Diluted Shares	Change YoY	Source filing
2025-12-31	67.31M	+1.6%	2026-03-02, From 2025-01-01
2024-12-31	66.24M	+2.1%	2026-03-02, From 2024-01-01
2023-12-31	64.87M	-0.7%	2026-03-02, From 2023-01-01
2022-12-31	65.34M	0.0%	2025-03-03, From 2022-01-01
2021-12-31	65.36M	+2.8%	2024-02-28, From 2021-01-01
2020-12-31	63.55M	n/c	2023-03-02, From 2020-01-01
2019-12-31	19.14M	+6.8%	2022-03-01, From 2019-01-01
2018-12-31	17.91M	+160.9%	2021-03-01, From 2018-01-01
2017-12-31	6.87M	+81.0%	2019-03-14, From 2017-01-01
2016-12-31	3.79M	n/a	2018-03-23, From 2016-01-01