West Pharmaceutical Services Inc (WST): Weighted Average Diluted Shares

Annual figures by period end, from SEC filings.

Stock splits: 2-for-1, first reflected in a filing dated 2013-11-04. 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.

72.70M

Year ended 2025-12-31

-1.4%

3-year compound annual growth

-0.8%

5-year compound annual growth

-0.2%

10-year compound annual growth

2008-12-31 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	72.70M	-1.4%	2026-02-17, From 2025-01-01
2024-12-31	73.70M	-2.1%	2026-02-17, From 2024-01-01
2023-12-31	75.30M	-0.7%	2026-02-17, From 2023-01-01
2022-12-31	75.80M	-0.7%	2025-02-18, From 2022-01-01
2021-12-31	76.30M	+0.7%	2024-02-20, From 2021-01-01
2020-12-31	75.80M	+0.5%	2023-02-21, From 2020-01-01
2019-12-31	75.40M	0.0%	2022-02-22, From 2019-01-01
2018-12-31	75.40M	-0.5%	2021-02-23, From 2018-01-01
2017-12-31	75.80M	+1.1%	2020-02-24, From 2017-01-01
2016-12-31	75.00M	+1.6%	2019-02-28, From 2016-01-01
2015-12-31	73.80M	+1.4%	2018-02-26, From 2015-01-01
2014-12-31	72.80M	+2.0%	2017-02-28, From 2014-01-01
2013-12-31	71.40M	-0.6%	2016-02-26, From 2013-01-01
2012-12-31	71.80M	-3.0%	2015-02-25, From 2012-01-01
2011-12-31	74.00M	n/c	2014-02-27, From 2011-01-01
2010-12-31	36.70M	+1.1%	2013-02-27, From 2010-01-01
2009-12-31	36.30M	+0.6%	2012-03-01, From 2009-01-01
2008-12-31	36.10M	n/a	2011-02-28, From 2008-01-01