Amphastar Pharmaceuticals, Inc. (AMPH): Shares Outstanding

Annual figures by period end, from SEC filings.

45.65M
As of 2025-12-31
42.53M
As of 2026-06-30
-1.7%
3-year compound annual growth
-0.8%
5-year compound annual growth
+0.1%
10-year compound annual growth
48.11M2013-12-31: 38.77M2014-12-31: 44.65M2015-12-31: 45.20M2016-12-31: 46.25M2017-12-31: 46.62M2018-12-31: 46.63M2019-12-31: 46.58M2020-12-31: 47.50M2021-12-31: 47.71M2022-12-31: 48.11M2023-12-31: 48.07M2024-12-31: 47.62M2025-12-31: 45.65M45.65M
2013-12-31 Shares Outstanding (shares) 2025-12-31
Period endedShares OutstandingChange YoYSource filing
2025-12-3145.65M-4.1%2026-02-26, Balance as of period end
2024-12-3147.62M-0.9%2026-02-26, Balance as of period end
2023-12-3148.07M-0.1%2025-03-03, Balance as of period end
2022-12-3148.11M+0.8%2024-02-29, Balance as of period end
2021-12-3147.71M+0.5%2023-03-01, Balance as of period end
2020-12-3147.50M+2.0%2022-03-11, Balance as of period end
2019-12-3146.58M-0.1%2021-03-15, Balance as of period end
2018-12-3146.63M0.0%2020-03-16, Balance as of period end
2017-12-3146.62M+0.8%2019-03-15, Balance as of period end
2016-12-3146.25M+2.3%2018-03-14, Balance as of period end
2015-12-3145.20M+1.2%2017-03-15, Balance as of period end
2014-12-3144.65M+15.2%2016-03-15, Balance as of period end
2013-12-3138.77Mn/a2015-03-26, Balance as of period end