Amphastar Pharmaceuticals, Inc. (AMPH)
$20.54
+1.38%
event_note
Approx. Next Earnings: ~2026-08-07
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Since Aug 12, 2014, Amphastar Pharmaceuticals, Inc. (AMPH) has reported earnings 48 times. On average the shares move ±8.30% post-earnings, with a positive reaction 52.1% of the time. Its largest post-earnings gain was +16.34% (Nov 08, 2016) and its largest decline was -24.7% (May 09, 2018). The next earnings report is predicted for 2026-08-07 (approximate).
Earnings Price Reaction
Scroll to zoom, drag to pan — click earnings dots for details
Beat
Miss
Earnings Impact
Total Earnings
48
Avg Abs. Movement
±8.30%
Positive %
52.1%
Negative %
47.9%
Historical Earnings Statistics
| Date | Timing | Open | High | Close | Volume | Movement % | SEC Filing |
|---|---|---|---|---|---|---|---|
| May 07, 2026 | ☽ POST | $24.11 | $24.34 | $24.00 | 17,622 | -20.71% | open_in_new |
| Feb 26, 2026 | ☽ POST | $28.00 | $28.17 | $26.49 | 816,500 | -23.63% | open_in_new |
| Nov 06, 2025 | ☽ POST | $25.41 | $25.53 | $24.23 | 767,200 | -0.83% | open_in_new |
| Aug 07, 2025 | ☽ POST | $21.15 | $21.74 | $21.62 | 705,600 | +10.13% | open_in_new |
| May 07, 2025 | ☽ POST | $24.03 | $24.61 | $24.43 | 819,800 | +0.9% | open_in_new |
| Feb 27, 2025 | ☽ POST | $31.18 | $31.70 | $31.49 | 606,600 | -9.72% | open_in_new |
| Nov 06, 2024 | ☽ POST | $52.05 | $53.96 | $53.40 | 611,800 | -13.69% | open_in_new |
| Aug 07, 2024 | ☽ POST | $39.91 | $40.00 | $38.89 | 470,400 | +13.29% | open_in_new |
| May 08, 2024 | ☽ POST | $42.84 | $43.29 | $42.21 | 433,700 | +0.52% | open_in_new |
| Feb 28, 2024 | ☽ POST | $55.95 | $55.95 | $54.74 | 378,200 | -14.93% | open_in_new |
| Nov 08, 2023 | ☽ POST | $46.35 | $46.66 | $45.42 | 421,700 | +15.39% | open_in_new |
| Aug 08, 2023 | ☽ POST | $63.31 | $65.53 | $65.00 | 437,900 | -4.29% | open_in_new |
| May 09, 2023 | ☽ POST | $36.47 | $36.97 | $36.44 | 422,700 | +13.04% | open_in_new |
| Feb 28, 2023 | ☽ POST | $32.42 | $32.65 | $31.86 | 366,100 | +14.75% | open_in_new |
| Nov 07, 2022 | ☽ POST | $29.65 | $30.64 | $30.10 | 166,100 | -9.37% | open_in_new |
| Aug 08, 2022 | ☽ POST | $36.53 | $38.20 | $37.75 | 453,400 | -15.07% | open_in_new |
| May 09, 2022 | ☽ POST | $32.18 | $33.05 | $31.76 | 630,700 | +7.05% | open_in_new |
| Mar 10, 2022 | ☽ POST | $30.10 | $30.79 | $30.47 | 401,700 | +12.57% | open_in_new |
| Nov 08, 2021 | ☽ POST | $20.09 | $20.20 | $19.95 | 126,500 | +4.06% | open_in_new |
| Aug 09, 2021 | ☽ POST | $20.39 | $20.39 | $20.08 | 108,100 | +1.2% | open_in_new |
| May 06, 2021 | ☽ POST | $17.91 | $18.09 | $18.05 | 116,500 | +3.49% | open_in_new |
| Mar 15, 2021 | ☽ POST | $19.33 | $19.40 | $19.15 | 177,000 | -3.71% | open_in_new |
| Nov 06, 2020 | ☀ PRE | $20.79 | $20.79 | $19.20 | 248,300 | -6.93% | open_in_new |
| Aug 06, 2020 | ☽ POST | $21.05 | $21.15 | $20.27 | 316,700 | -0.64% | open_in_new |
| May 07, 2020 | ☽ POST | $17.60 | $17.79 | $17.60 | 256,400 | +6.76% | open_in_new |
| Mar 12, 2020 | ☽ POST | $14.50 | $14.68 | $13.87 | 291,500 | +2.31% | open_in_new |
| Nov 07, 2019 | ☽ POST | $19.20 | $19.39 | $19.12 | 128,800 | -3.71% | open_in_new |
| Aug 07, 2019 | ☽ POST | $19.22 | $19.85 | $19.69 | 135,300 | +7.01% | open_in_new |
| May 09, 2019 | ☽ POST | $22.43 | $22.85 | $22.63 | 134,900 | -0.97% | open_in_new |
| Mar 12, 2019 | ☽ POST | $23.74 | $24.40 | $24.17 | 140,500 | -14.44% | open_in_new |
| Nov 08, 2018 | ☽ POST | $19.60 | $20.99 | $20.71 | 842,400 | +4.25% | open_in_new |
| Aug 08, 2018 | ☽ POST | $17.76 | $18.03 | $17.97 | 97,600 | -4.4% | open_in_new |
| May 09, 2018 | ☽ POST | $19.21 | $19.45 | $19.43 | 137,500 | -24.7% | open_in_new |
| Mar 12, 2018 | ☽ POST | $19.14 | $19.59 | $19.58 | 222,100 | +3.93% | open_in_new |
| Nov 08, 2017 | ☽ POST | $17.76 | $18.30 | $17.81 | 268,600 | +5.61% | open_in_new |
| Aug 09, 2017 | ☽ POST | $15.65 | $16.13 | $15.54 | 254,000 | -1.74% | open_in_new |
| May 08, 2017 | ☽ POST | $14.95 | $15.18 | $14.94 | 310,500 | -1.41% | open_in_new |
| Mar 13, 2017 | ☽ POST | $14.56 | $14.87 | $14.74 | 285,300 | -17.23% | open_in_new |
| Nov 08, 2016 | ☽ POST | $17.85 | $18.16 | $17.63 | 414,300 | +16.34% | open_in_new |
| Aug 08, 2016 | ☽ POST | $16.11 | $16.47 | $16.02 | 265,400 | +12.05% | open_in_new |
| May 09, 2016 | ☽ POST | $11.73 | $12.06 | $11.85 | 195,000 | +9.62% | open_in_new |
| Mar 14, 2016 | ☽ POST | $11.37 | $11.79 | $11.71 | 253,500 | +8.63% | open_in_new |
| Nov 12, 2015 | ☽ POST | $12.47 | $12.62 | $12.26 | 177,900 | +13.38% | open_in_new |
| Aug 12, 2015 | ☽ POST | $15.16 | $15.48 | $15.22 | 125,200 | -1.97% | open_in_new |
| May 13, 2015 | ☀ PRE | $14.50 | $15.24 | $15.21 | 291,700 | +5.63% | open_in_new |
| Mar 24, 2015 | ☽ POST | $15.20 | $15.50 | $15.33 | 579,900 | -5.94% | open_in_new |
| Nov 12, 2014 | ☽ POST | $9.90 | $10.19 | $10.05 | 120,500 | +5.77% | open_in_new |
| Aug 12, 2014 | ☽ POST | $10.11 | $10.30 | $10.20 | 91,900 | -0.49% | open_in_new |
event
Earnings Count
48
Total earnings in dataset
trending_up
Avg Abs. Movement
±8.30%
Avg % price change on earnings
SEC Filing Types
Recent SEC Filings
10 most recent| Form | Date Filed | View on EDGAR |
|---|---|---|
| 4 | 20260603 | open_in_new SEC.gov |
| 4 | 20260603 | open_in_new SEC.gov |
| 4 | 20260603 | open_in_new SEC.gov |
| 4 | 20260603 | open_in_new SEC.gov |
| 4 | 20260603 | open_in_new SEC.gov |
| 4 | 20260603 | open_in_new SEC.gov |
| 8-K | 20260603 | open_in_new SEC.gov |
| 10-Q | 20260507 | open_in_new SEC.gov |
| 8-K | 20260507 | open_in_new SEC.gov |
| ARS | 20260413 | open_in_new SEC.gov |
Frequently asked about AMPH earnings
When does Amphastar Pharmaceuticals, Inc. report earnings next? expand_more
Amphastar Pharmaceuticals, Inc. (AMPH)'s next earnings date is approximate for 2026-08-07. This is a prediction based on its historical quarterly reporting pattern, not a company-confirmed date.
How much does AMPH stock move after earnings? expand_more
Over 48 reports, AMPH has moved an average of ±8.30% the session after earnings, closing higher 52.1% of the time.
What was AMPH's biggest post-earnings move? expand_more
AMPH's largest post-earnings gain on record was +16.34% on Nov 08, 2016, and its largest decline was -24.7% on May 09, 2018.
Where can I find Amphastar Pharmaceuticals, Inc.'s SEC filings? expand_more
All of Amphastar Pharmaceuticals, Inc.'s SEC filings — 10-K, 10-Q, 8-K and more — are listed in the SEC filings section on this page, each linking to the original document on SEC.gov.
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