Amphastar Pharmaceuticals, Inc. Diluted Shares Outstanding (Weighted Average)
Amphastar Pharmaceuticals, Inc. (AMPH) reported Diluted Shares Outstanding (Weighted Average) of 44.23 million shares for the 3-month period ending 2026-06-30, per its 10-Q filed 2026-08-06.
Financial Statements › Income Statement › Earnings Per Share
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding · last filed 2026-08-06
- Amphastar Pharmaceuticals, Inc. weighted average number of shares outstanding, diluted for the quarter ending 2026-06-30 was 44.23M shares, a 8.11% decline year-over-year.
- Amphastar Pharmaceuticals, Inc. weighted average number of shares outstanding, diluted for the quarter ending 2026-03-31 was 46.46M shares, a 6.88% decline year-over-year.
- Amphastar Pharmaceuticals, Inc. weighted average number of shares outstanding, diluted for the quarter ending 2025-12-31 was 47.16M shares, a 8.08% decline year-over-year.
- Amphastar Pharmaceuticals, Inc. weighted average number of shares outstanding, diluted for the quarter ending 2025-09-30 was 47.68M shares, a 8.07% decline year-over-year.
- Amphastar Pharmaceuticals, Inc. weighted average number of shares outstanding, diluted for fiscal 2025 was 48.22M shares, a 7.38% decline from fiscal 2024.
- Amphastar Pharmaceuticals, Inc. weighted average number of shares outstanding, diluted for fiscal 2024 was 52.06M shares, a 1.78% decline from fiscal 2023.
- Amphastar Pharmaceuticals, Inc. weighted average number of shares outstanding, diluted for fiscal 2023 was 53.00M shares, a 1.09% increase from fiscal 2022.
- Amphastar Pharmaceuticals, Inc. weighted average number of shares outstanding, diluted for fiscal 2022 was 52.43M shares, a 5.31% increase from fiscal 2021.
| Period end | Weighted Average Number of Shares Outstanding, Diluted 3 month | Weighted Average Number of Shares Outstanding, Diluted 3 month as first filed | Weighted Average Number of Shares Outstanding, Diluted 6 month | Weighted Average Number of Shares Outstanding, Diluted 9 month | Weighted Average Number of Shares Outstanding, Diluted 12 month |
|---|---|---|---|---|---|
| 2026-06-30 | 44.23M shares 10-Q · filed 2026-08-06 | 45.34M shares 10-Q · filed 2026-08-06 | 45.95M shares derived: average of 3 quarters · filed 2026-08-06 | 46.38M shares derived: average of 4 quarters · filed 2026-08-06 | |
| 2026-03-31 | 46.46M shares 10-Q · filed 2026-05-07 | 46.81M shares derived: average of 2 quarters · filed 2026-05-07 | 47.10M shares derived: average of 3 quarters · filed 2026-05-07 | 47.36M shares derived: average of 4 quarters · filed 2026-08-06 | |
| 2025-12-31 | 47.16M shares derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-26 | 47.42M shares derived: average of 2 quarters · filed 2026-02-26 | 47.66M shares derived: average of 3 quarters · filed 2026-08-06 | 48.22M shares 10-K · filed 2026-02-26 | |
| 2025-09-30 | 47.68M shares 10-Q · filed 2025-11-06 | 47.90M shares derived: average of 2 quarters · filed 2026-08-06 | 48.56M shares 10-Q · filed 2025-11-06 | 49.25M shares derived: average of 4 quarters · filed 2026-08-06 | |
| 2025-06-30 | 48.13M shares 10-Q · filed 2026-08-06 | 49.01M shares 10-Q · filed 2026-08-06 | 49.78M shares derived: average of 3 quarters · filed 2026-08-06 | 50.30M shares derived: average of 4 quarters · filed 2026-08-06 | |
| 2025-03-31 | 49.89M shares 10-Q · filed 2026-05-07 | 50.60M shares derived: average of 2 quarters · filed 2026-05-07 | 51.02M shares derived: average of 3 quarters · filed 2026-05-07 | 51.28M shares derived: average of 4 quarters · filed 2026-05-07 | |
| 2024-12-31 | 51.31M shares derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-26 | 51.59M shares derived: average of 2 quarters · filed 2026-02-26 | 51.74M shares derived: average of 3 quarters · filed 2026-02-26 | 52.06M shares 10-K · filed 2026-02-26 | |
| 2024-09-30 | 51.86M shares 10-Q · filed 2025-11-06 | 51.95M shares derived: average of 2 quarters · filed 2025-11-06 | 52.31M shares 10-Q · filed 2025-11-06 | 52.48M shares derived: average of 4 quarters · filed 2026-02-26 | |
| 2024-06-30 | 52.05M shares 10-Q · filed 2025-08-07 | 52.53M shares 10-Q · filed 2025-08-07 | 52.69M shares derived: average of 3 quarters · filed 2026-02-26 | 53.00M shares derived: average of 4 quarters · filed 2026-02-26 | |
| 2024-03-31 | 53.01M shares 10-Q · filed 2025-05-08 | 53.01M shares derived: average of 2 quarters · filed 2026-02-26 | 53.32M shares derived: average of 3 quarters · filed 2026-02-26 | 53.26M shares derived: average of 4 quarters · filed 2026-02-26 | |
| 2023-12-31 | 53.01M shares derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-26 | 53.47M shares derived: average of 2 quarters · filed 2026-02-26 | 53.35M shares derived: average of 3 quarters · filed 2026-02-26 | 53.00M shares 10-K · filed 2026-02-26 | |
| 2023-09-30 | 53.92M shares 10-Q · filed 2024-11-07 | 53.51M shares derived: average of 2 quarters · filed 2024-11-07 | 53.00M shares 10-Q · filed 2024-11-07 | 52.68M shares derived: average of 4 quarters · filed 2025-03-03 | |
| 2023-06-30 | 53.10M shares 10-Q · filed 2024-08-09 | 52.54M shares 10-Q · filed 2024-08-09 | 52.26M shares derived: average of 3 quarters · filed 2025-03-03 | 52.39M shares derived: average of 4 quarters · filed 2025-03-03 | |
| 2023-03-31 | 51.97M shares 10-Q · filed 2024-05-10 | 51.84M shares derived: average of 2 quarters · filed 2025-03-03 | 52.16M shares derived: average of 3 quarters · filed 2025-03-03 | 52.42M shares derived: average of 4 quarters · filed 2025-03-03 | |
| 2022-12-31 | 51.71M shares derived: 10-K 12 month − 10-Q 9 month · filed 2025-03-03 | 52.25M shares derived: average of 2 quarters · filed 2025-03-03 | 52.58M shares derived: average of 3 quarters · filed 2025-03-03 | 52.43M shares 10-K · filed 2025-03-03 | |
| 2022-09-30 | 52.79M shares 10-Q · filed 2023-11-08 | 53.01M shares derived: average of 2 quarters · filed 2023-11-08 | 52.66M shares 10-Q · filed 2023-11-08 | 52.01M shares derived: average of 4 quarters · filed 2024-02-29 | |
| 2022-06-30 | 53.23M shares 10-Q · filed 2023-08-09 | 52.60M shares 10-Q · filed 2023-08-09 | 51.75M shares derived: average of 3 quarters · filed 2024-02-29 | 51.32M shares derived: average of 4 quarters · filed 2024-02-29 | |
| 2022-03-31 | 51.98M shares 10-Q · filed 2023-05-09 | 51.02M shares derived: average of 2 quarters · filed 2024-02-29 | 50.68M shares derived: average of 3 quarters · filed 2024-02-29 | 50.40M shares derived: average of 4 quarters · filed 2024-02-29 | |
| 2021-12-31 | 50.06M shares derived: 10-K 12 month − 10-Q 9 month · filed 2024-02-29 | 50.03M shares derived: average of 2 quarters · filed 2024-02-29 | 49.87M shares derived: average of 3 quarters · filed 2024-02-29 | 49.78M shares 10-K · filed 2024-02-29 | |
| 2021-09-30 | 50.01M shares 10-Q · filed 2022-11-08 | 49.78M shares derived: average of 2 quarters · filed 2022-11-08 | 49.69M shares 10-Q · filed 2022-11-08 | 49.70M shares derived: average of 4 quarters · filed 2023-03-01 | |
| 2021-06-30 | 49.55M shares 10-Q · filed 2022-08-09 | 49.53M shares 10-Q · filed 2022-08-09 | 49.60M shares derived: average of 3 quarters · filed 2023-03-01 | 49.66M shares derived: average of 4 quarters · filed 2023-03-01 | |
| 2021-03-31 | 49.52M shares 10-Q · filed 2022-05-10 | 49.62M shares derived: average of 2 quarters · filed 2023-03-01 | 49.70M shares derived: average of 3 quarters · filed 2023-03-01 | 48.96M shares derived: average of 4 quarters · filed 2023-03-01 | |
| 2020-12-31 | 49.73M shares derived: 10-K 12 month − 10-Q 9 month · filed 2023-03-01 | 49.79M shares derived: average of 2 quarters · filed 2023-03-01 | 48.78M shares derived: average of 3 quarters · filed 2023-03-01 | 49.12M shares 10-K · filed 2023-03-01 | |
| 2020-09-30 | 49.85M shares 10-Q · filed 2021-11-09 | 48.30M shares derived: average of 2 quarters · filed 2021-11-09 | 48.92M shares 10-Q · filed 2021-11-09 | 47.92M shares derived: average of 4 quarters · filed 2021-11-09 | |
| 2020-06-30 | 46.75M shares 10-Q · filed 2021-08-09 | 48.46M shares 10-Q · filed 2021-08-09 | 47.28M shares derived: average of 3 quarters · filed 2021-08-09 | 47.98M shares derived: average of 4 quarters · filed 2021-08-09 | |
| 2020-03-31 | 48.25M shares 10-Q · filed 2021-05-07 | 47.54M shares derived: average of 2 quarters · filed 2021-05-07 | 48.39M shares derived: average of 3 quarters · filed 2021-05-07 | 48.76M shares derived: average of 4 quarters · filed 2021-05-07 | |
| 2019-12-31 | 46.84M shares 10-K · filed 2020-03-16 | 48.46M shares derived: average of 2 quarters · filed 2020-11-06 | 48.94M shares derived: average of 3 quarters · filed 2020-11-06 | 49.91M shares 10-K · filed 2022-03-11 | |
| 2019-09-30 | 50.08M shares 10-Q · filed 2020-11-06 | 49.98M shares derived: average of 2 quarters · filed 2020-11-06 | 50.13M shares 10-Q · filed 2020-11-06 | 49.89M shares derived: average of 4 quarters · filed 2020-11-06 | |
| 2019-06-30 | 49.89M shares 10-Q · filed 2020-08-07 | 50.16M shares 10-Q · filed 2020-08-07 | 49.83M shares derived: average of 3 quarters · filed 2020-08-07 | 49.44M shares derived: average of 4 quarters · filed 2020-08-07 | |
| 2019-03-31 | 50.42M shares 10-Q · filed 2020-05-11 | 49.80M shares derived: average of 2 quarters · filed 2020-05-11 | 49.29M shares derived: average of 3 quarters · filed 2020-05-11 | 48.61M shares derived: average of 4 quarters · filed 2020-05-11 | |
| 2018-12-31 | 49.18M shares 10-K · filed 2020-03-16 | 48.73M shares derived: average of 2 quarters · filed 2020-03-16 | 48.01M shares derived: average of 3 quarters · filed 2020-03-16 | 46.40M shares 10-K · filed 2021-03-15 | |
| 2018-09-30 | 48.28M shares 10-K · filed 2020-03-16 | 47.42M shares derived: average of 2 quarters · filed 2020-03-16 | 46.44M shares 10-Q · filed 2019-11-08 | 47.67M shares derived: average of 4 quarters · filed 2020-03-16 | |
| 2018-06-30 | 46.56M shares 10-K · filed 2020-03-16 | 46.53M shares 10-Q · filed 2019-08-09 | 47.47M shares derived: average of 3 quarters · filed 2020-03-16 | 47.65M shares derived: average of 4 quarters · filed 2020-03-16 | |
| 2018-03-31 | 46.51M shares 10-K · filed 2020-03-16 | 47.92M shares derived: average of 2 quarters · filed 2020-03-16 | 48.02M shares derived: average of 3 quarters · filed 2020-03-16 | 47.98M shares derived: average of 4 quarters · filed 2020-03-16 | |
| 2017-12-31 | 49.33M shares 10-K · filed 2019-03-15 | 48.77M shares derived: average of 2 quarters · filed 2019-03-15 | 48.47M shares derived: average of 3 quarters · filed 2019-03-15 | 48.37M shares 10-K · filed 2020-03-16 | |
| 2017-09-30 | 48.22M shares 10-K · filed 2019-03-15 | 48.04M shares derived: average of 2 quarters · filed 2019-03-15 | 48.05M shares 10-Q · filed 2018-11-09 | 47.56M shares derived: average of 4 quarters · filed 2019-03-15 | |
| 2017-06-30 | 47.87M shares 10-K · filed 2019-03-15 | 47.96M shares 10-Q · filed 2018-08-09 | 47.34M shares derived: average of 3 quarters · filed 2019-03-15 | 47.49M shares derived: average of 4 quarters · filed 2019-03-15 | |
| 2017-03-31 | 48.06M shares 10-K · filed 2019-03-15 | 47.08M shares derived: average of 2 quarters · filed 2019-03-15 | 47.37M shares derived: average of 3 quarters · filed 2019-03-15 | 47.02M shares derived: average of 4 quarters · filed 2019-03-15 | |
| 2016-12-31 | 46.10M shares 10-K · filed 2018-03-14 | 47.03M shares derived: average of 2 quarters · filed 2018-03-14 | 46.67M shares derived: average of 3 quarters · filed 2018-03-14 | 47.50M shares 10-K · filed 2019-03-15 | |
| 2016-09-30 | 47.95M shares 10-K · filed 2018-03-14 | 46.96M shares derived: average of 2 quarters · filed 2018-03-14 | 46.37M shares 10-Q · filed 2017-11-09 | 46.86M shares derived: average of 4 quarters · filed 2018-03-14 | |
| 2016-06-30 | 45.97M shares 10-K · filed 2018-03-14 | 45.71M shares 10-Q · filed 2017-08-09 | 46.50M shares derived: average of 3 quarters · filed 2018-03-14 | 46.20M shares derived: average of 4 quarters · filed 2018-03-14 | |
| 2016-03-31 | 46.81M shares 10-K · filed 2018-03-14 | 46.76M shares derived: average of 2 quarters · filed 2018-03-14 | 46.28M shares derived: average of 3 quarters · filed 2018-03-14 | 45.92M shares derived: average of 4 quarters · filed 2018-03-14 | |
| 2015-12-31 | 46.71M shares 10-K · filed 2017-03-15 | 46.71K shares 10-K · filed 2016-03-15 | 46.01M shares derived: average of 2 quarters · filed 2017-03-15 | 45.62M shares derived: average of 3 quarters · filed 2017-03-15 | 44.96M shares 10-K · filed 2018-03-14 |
| 2015-09-30 | 45.31M shares 10-K · filed 2017-03-15 | 45.08M shares derived: average of 2 quarters · filed 2017-03-15 | 44.92M shares 10-Q · filed 2016-11-09 | 33.70M shares derived: average of 4 quarters · filed 2017-03-15 | |
| 2015-06-30 | 44.85M shares 10-K · filed 2017-03-15 | 44.73M shares 10-Q · filed 2016-08-09 | 29.83M shares derived: average of 3 quarters · filed 2017-03-15 | 22.38M shares derived: average of 4 quarters · filed 2017-03-15 | |
| 2015-03-31 | 44.60M shares 10-K · filed 2017-03-15 | 22.32M shares derived: average of 2 quarters · filed 2017-03-15 | 14.90M shares derived: average of 3 quarters · filed 2017-03-15 | 11.18M shares derived: average of 4 quarters · filed 2017-03-15 | |
| 2014-12-31 | 44.65K shares 10-K · filed 2016-03-15 | 44.65M shares 10-K · filed 2015-03-26 | 44.65K shares derived: average of 2 quarters · filed 2016-03-15 | 43.02K shares derived: average of 3 quarters · filed 2016-03-15 | 41.96M shares 10-K · filed 2017-03-15 |
| 2014-09-30 | 44.64K shares 10-K · filed 2016-03-15 | 44.64M shares 10-Q · filed 2014-11-13 | 42.21K shares derived: average of 2 quarters · filed 2016-03-15 | 41.06M shares 10-Q · filed 2015-11-13 | 9.82M shares derived: average of 4 quarters · filed 2016-03-15 |
| 2014-06-30 | 39.77K shares 10-K · filed 2016-03-15 | 39.77M shares 10-Q · filed 2014-08-13 | 39.27M shares 10-Q · filed 2015-08-13 | 13.07M shares derived: average of 3 quarters · filed 2016-03-15 | 19.48M shares derived: average of 4 quarters · filed 2016-03-15 |
| 2014-03-31 | 38.77K shares 10-K · filed 2016-03-15 | 38.77M shares 10-K · filed 2015-03-26 | 19.59M shares derived: average of 2 quarters · filed 2016-03-15 | 25.96M shares derived: average of 3 quarters · filed 2016-03-15 | 29.18M shares derived: average of 4 quarters · filed 2016-03-15 |
| 2013-12-31 | 39.14M shares 10-K · filed 2015-03-26 | 38.92M shares derived: average of 2 quarters · filed 2015-03-26 | 38.90M shares derived: average of 3 quarters · filed 2015-03-26 | 38.88M shares 10-K · filed 2016-03-15 | |
| 2013-09-30 | 38.71M shares 10-K · filed 2015-03-26 | 38.78M shares derived: average of 2 quarters · filed 2015-03-26 | 38.85M shares 10-Q · filed 2014-11-13 | ||
| 2013-06-30 | 38.85M shares 10-K · filed 2015-03-26 | 38.85M shares 10-Q · filed 2014-08-13 | |||
| 2013-03-31 | 38.84M shares 10-K · filed 2015-03-26 | ||||
| 2012-12-31 | 38.94M shares 10-K · filed 2015-03-26 |
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