Amphastar Pharmaceuticals annual shares outstanding
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2025
Amphastar Pharmaceuticals Shares Outstanding History (AMPH)
Amphastar Pharmaceuticals reported 45.6M shares outstanding at the end of fiscal 2025.
View full Amphastar Pharmaceuticals company overviewAmphastar Pharmaceuticals annual shares outstanding history
| Fiscal year | Period ended | Shares outstanding | Change | Growth |
|---|---|---|---|---|
| 2025 | 2025-12-31 | 45.6M | −2.0M | −4.14% |
| 2024 | 2024-12-31 | 47.6M | −451,190 | −0.94% |
| 2023 | 2023-12-31 | 48.1M | −43,188 | −0.09% |
| 2022 | 2022-12-31 | 48.1M | 397,157 | +0.83% |
| 2021 | 2021-12-31 | 47.7M | 219,473 | +0.46% |
| 2020 | 2020-12-31 | 47.5M | 918,471 | +1.97% |
| 2019 | 2019-12-31 | 46.6M | −54,150 | −0.12% |
| 2018 | 2018-12-31 | 46.6M | 7,537 | +0.02% |
| 2017 | 2017-12-31 | 46.6M | 374,959 | +0.81% |
| 2016 | 2016-12-31 | 46.2M | 1.1M | +2.32% |
| 2015 | 2015-12-31 | 45.2M | 551,724 | +1.24% |
| 2014 | 2014-12-31 | 44.6M | 5.9M | +15.17% |
| 2013 | 2013-12-31 | 38.8M | — | — |
Amphastar Pharmaceuticals quarterly shares outstanding
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| Fiscal quarter | Period ended | Shares outstanding | Change | YoY change |
|---|---|---|---|---|
| Q2 2026 | 2026-06-30 | 42.5M | −4.0M | −8.51% |
| Q1 2026 | 2026-03-31 | 44.6M | −3.0M | −6.36% |
| Q4 2025 | 2025-12-31 | 45.6M | −2.0M | −4.14% |
| Q3 2025 | 2025-09-30 | 46.3M | −2.0M | −4.18% |
| Q2 2025 | 2025-06-30 | 46.5M | −2.5M | −5.05% |
| Q1 2025 | 2025-03-31 | 47.7M | −1.2M | −2.40% |
| Q4 2024 | 2024-12-31 | 47.6M | −451,190 | −0.94% |
| Q3 2024 | 2024-09-30 | 48.4M | 474,531 | +0.99% |
| Q2 2024 | 2024-06-30 | 49.0M | 143,608 | +0.29% |
| Q1 2024 | 2024-03-31 | 48.8M | 662,105 | +1.37% |
| Q4 2023 | 2023-12-31 | 48.1M | −43,188 | −0.09% |
| Q3 2023 | 2023-09-30 | 47.9M | −714,079 | −1.47% |
| Q2 2023 | 2023-06-30 | 48.8M | −173,483 | −0.35% |
| Q1 2023 | 2023-03-31 | 48.2M | −572,937 | −1.18% |
| Q4 2022 | 2022-12-31 | 48.1M | 397,157 | +0.83% |
| Q3 2022 | 2022-09-30 | 48.6M | 629,855 | +1.31% |
| Q2 2022 | 2022-06-30 | 49.0M | 1.0M | +2.10% |
| Q1 2022 | 2022-03-31 | 48.8M | 1.0M | +2.17% |
| Q4 2021 | 2021-12-31 | 47.7M | 219,473 | +0.46% |
| Q3 2021 | 2021-09-30 | 48.0M | 448,475 | +0.94% |
| Q2 2021 | 2021-06-30 | 48.0M | 488,640 | +1.03% |
| Q1 2021 | 2021-03-31 | 47.7M | 1.4M | +3.05% |
| Q4 2020 | 2020-12-31 | 47.5M | 918,471 | +1.97% |
| Q3 2020 | 2020-09-30 | 47.5M | 334,308 | +0.71% |
| Q2 2020 | 2020-06-30 | 47.5M | 277,234 | +0.59% |
| Q1 2020 | 2020-03-31 | 46.3M | −792,521 | −1.68% |
| Q4 2019 | 2019-12-31 | 46.6M | −54,150 | −0.12% |
| Q3 2019 | 2019-09-30 | 47.2M | 1.0M | +2.25% |
| Q2 2019 | 2019-06-30 | 47.2M | 800,886 | +1.73% |
| Q1 2019 | 2019-03-31 | 47.1M | 441,831 | +0.95% |
| Q4 2018 | 2018-12-31 | 46.6M | 7,537 | +0.02% |
| Q3 2018 | 2018-09-30 | 46.2M | 263,259 | +0.57% |
| Q2 2018 | 2018-06-30 | 46.4M | 167,844 | +0.36% |
| Q1 2018 | 2018-03-31 | 46.7M | 698,549 | +1.52% |
| Q4 2017 | 2017-12-31 | 46.6M | 374,959 | +0.81% |
| Q3 2017 | 2017-09-30 | 45.9M | −141,629 | −0.31% |
| Q2 2017 | 2017-06-30 | 46.2M | 1.2M | +2.57% |
| Q1 2017 | 2017-03-31 | 46.0M | 1.0M | +2.26% |
| Q4 2016 | 2016-12-31 | 46.2M | 1.1M | +2.32% |
| Q3 2016 | 2016-09-30 | 46.0M | 831,511 | +1.84% |
| Q2 2016 | 2016-06-30 | 45.1M | −238,136 | −0.53% |
| Q1 2016 | 2016-03-31 | 44.9M | 280,064 | +0.63% |
| Q4 2015 | 2015-12-31 | 45.2M | 551,724 | +1.24% |
| Q3 2015 | 2015-09-30 | 45.2M | 561,074 | +1.26% |
| Q2 2015 | 2015-06-30 | 45.3M | 693,528 | +1.55% |
| Q1 2015 | 2015-03-31 | 44.7M | 5.9M | +15.21% |
| Q4 2014 | 2014-12-31 | 44.6M | — | — |
| Q3 2014 | 2014-09-30 | 44.6M | — | — |
| Q2 2014 | 2014-06-30 | 44.6M | — | — |
| Q4 2013 | 2013-12-31 | 38.8M | — | — |
Amphastar Pharmaceuticals shares outstanding trends
Over the last five reported fiscal years, Amphastar Pharmaceuticals's shares outstanding moved from 47.5M to 45.6M, a change of −1.8M. The latest reported quarter, Q2 2026, shows 42.5M.
About the metric
What shares outstanding means
Shares outstanding is the number of common shares held by investors at a reporting-period end. The count can change because of stock issuance, repurchases, conversions, acquisitions, or stock splits.
Calculation and source
SEC-reported period-end shares
TickerStat displays period-end common shares from SEC filings and adjusts older values to the current share basis when SEC-reported stock-split conversion ratios are available. Values remain as reported when no split ratio is available. Fiscal periods can differ from calendar years, so exact period-end dates are included.
Review Amphastar Pharmaceuticals filings at SEC.gov ↗