NYSE : AMPY
-$0.05 (-1.23%)
9.92%
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change: -95.0 | last: 13319
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0.00
change: -13.5588 | last: 0.135616.25M
| Filing Date | Reporting Person | Amount Beneficially Owned | % of Class |
|---|---|---|---|
| 2026-07-27 | BlackRock, Inc. | 2.46M | 6.00% |
| 2026-07-14 | PERGA CAPITAL PARTNERS, LP | 3.82M | 9.20% |
| 2026-07-14 | PERGA CAPITAL PARTNERS, LP | 3.29M | 8.00% |
| 2026-05-11 | Thomist Capital Management, LP | 130.84K | 0.30% |
| 2026-04-09 | Dimensional Fund Advisors LP | 1.63M | 4.00% |
| 2026-03-17 | Stoney Lonesome HF LP | 2.5M | 6.10% |
| 2026-02-12 | Thomist Capital Management, LP | 3.15M | 7.80% |
| 2026-01-30 | The Vanguard Group | 1.85M | 4.57% |
| 2025-11-14 | PERGA CAPITAL PARTNERS, LP | 2.75M | 6.80% |
| 2025-08-14 | Stoney Lonesome HF LP | 3.5M | 8.70% |
| 2025-08-08 | Irrevocable Larson Family Investment Trust | 2.58M | 6.40% |
| 2025-08-05 | Irrevocable Larson Family Investment Trust | 2.48M | 6.20% |
| 2025-07-23 | Irrevocable Larson Family Investment Trust | 2.04M | 5.10% |
| 2025-07-16 | BlackRock, Inc. | 559.34K | 1.40% |
| 2025-06-24 | The Drake Helix Holdings, LLC | 83000.0 | 0.20% |
| 2025-06-24 | Stoney Lonesome HF LP | 3.15M | 7.80% |
| 2025-06-24 | Clint Coghill | 2410.0 | 0.00% |
| 2025-06-06 | Clint Coghill | 2410.0 | 0.00% |
| 2025-06-06 | Stoney Lonesome HF LP | 3M | 7.40% |
| 2025-06-06 | The Drake Helix Holdings, LLC | 83000.0 | 0.20% |
| 2025-05-20 | The Drake Helix Holdings, LLC | 83000.0 | 0.20% |
| 2025-05-20 | Stoney Lonesome HF LP | 2.7M | 6.70% |
| 2025-05-20 | Clint Coghill | 2410.0 | 0.00% |
| 2025-04-16 | Clint Coghill | 2410.0 | 0.00% |
| 2025-04-16 | Stoney Lonesome HF LP | 2.83M | 7.00% |
| 2025-04-16 | The Drake Helix Holdings, LLC | 83000.0 | 0.20% |
| 2025-02-13 | Stoney Lonesome HF LP | 2.56M | 6.45% |
| 2024-10-31 | 30-0447847 | 2.37M | 6.00% |
| 2024-03-18 | Coghill | 1.97M | 5.05% |
| 2023-02-09 | The Vanguard Group - 23-1945930 | 2.46M | 6.40% |
| 2023-02-03 | (1) BlackRock, Inc. | 2.22M | 5.80% |
| 2019-02-14 | Aristeia Capital, L.L.C. | - | 0.00% |
| 2019-01-14 | II, L.P. | 166.6K | 0.70% |
| 2019-01-14 | Centerbridge Special Credit Partners II AIV III, L.P. | 166.6K | 0.70% |
| 2019-01-14 | Jeffrey H. Aronson | 550K | 2.10% |
| 2019-01-14 | Centerbridge Credit Cayman GP Ltd. | 383.4K | 1.50% |
| 2019-01-14 | L.P. | 383.4K | 1.50% |
| 2019-01-14 | Centerbridge Credit Partners Master AIV IV, L.P. | 383.4K | 1.50% |
| 2019-01-14 | CSCP II Cayman GP Ltd. | 166.6K | 0.70% |
| 2019-01-14 | Mark T. Gallogly | 550K | 2.10% |
| 2018-10-12 | Centerbridge Credit Partners Master AIV IV, L.P. | 1.04M | 4.10% |
| 2018-02-14 | 2 | 1.51M | 5.94% |
| 2018-02-09 | Man Group plc | 680.34K | 2.70% |
| 2018-02-09 | Pine River Capital Management L.P. | - | 0.00% |
| 2018-02-09 | Brian Taylor | - | 0.00% |
| 2018-01-12 | Centerbridge Credit Partners Master AIV IV, L.P. | 1.93M | 7.60% |
| 2017-12-12 | CSCP II Cayman GP Ltd. | 708.83K | 2.80% |
| 2017-12-12 | Jeffrey H. Aronson | 2.47M | 9.80% |
| 2017-12-12 | Mark T. Gallogly | 2.47M | 9.80% |
| 2017-12-12 | Centerbridge Credit Cayman GP Ltd. | 1.76M | 7.00% |
| 2017-12-12 | L.P. | 397.74K | 1.60% |
| 2017-12-12 | Centerbridge Credit Partners, L.P. | - | 0.00% |
| 2017-12-12 | Centerbridge Special Credit Partners II AIV III, L.P. | 708.83K | 2.80% |
| 2017-12-12 | Centerbridge Credit Partners General Partner, L.P. | 1.36M | 5.40% |
| 2017-12-12 | Centerbridge Credit Partners TE Intermediate I, L.P. | 1.36M | 5.40% |
| 2017-12-12 | II, L.P. | 708.83K | 2.80% |
| 2017-12-12 | III, L.P. | 397.74K | 1.60% |
| 2017-02-09 | Man Group plc | 1.49M | 6.04% |
| 2017-02-07 | Brian Taylor | 1.5M | 6.10% |
| 2017-02-07 | Pine River Capital Management L.P. | 1.5M | 6.10% |
| 2016-12-08 | Man Group plc | 1.42M | 5.75% |
| 2016-11-04 | Avenue Energy Opportunities Fund, L.P. | 3.49M | 14.00% |
| 2016-11-04 | GL Energy Opportunities Partners, LLC | 3.49M | 14.00% |
| 2016-11-04 | Avenue Energy Opportunities Partners, LLC | 3.49M | 14.00% |
| 2016-11-04 | Avenue Capital Management II GenPar, LLC | 3.49M | 14.00% |
| 2016-11-04 | Avenue Capital Management II, L.P. | 3.49M | 14.00% |
| 2016-11-04 | Marc Lasry | 3.49M | 14.00% |
| 2016-10-31 | Centerbridge Special Credit Partners II AIV III, L.P. | 1.07M | 4.20% |
| 2016-10-31 | Fir Tree Inc. | 6.39M | 25.60% |
| 2016-10-31 | L.P. | 500.97K | 2.00% |
| 2016-10-31 | Centerbridge Credit Cayman GP Ltd. | 3.51M | 13.70% |
| 2016-10-31 | Mark T. Gallogly | 4.58M | 17.60% |
| 2016-10-31 | Jeffrey H. Aronson | 4.58M | 17.60% |
| 2016-10-31 | II, L.P. | 1.07M | 4.20% |
| 2016-10-31 | Centerbridge Credit Partners, L.P. | 1.2M | 4.80% |
| 2016-10-31 | CSCP II Cayman GP Ltd. | 1.07M | 4.20% |
| 2016-10-31 | III, L.P. | 500.97K | 2.00% |
| 2016-10-31 | Centerbridge Credit Partners TE Intermediate I, L.P. | 1.81M | 7.10% |
| 2016-10-31 | Centerbridge Credit Partners General Partner, L.P. | 3.01M | 11.80% |
| 2016-02-16 | Aristeia Capital, L.L.C. | - | 0.00% |
| 2016-02-16 | Rubric Capital Management, LLC | - | 0.00% |
| 2016-02-16 | Steven A. Cohen | - | 0.00% |
| 2015-02-17 | Aristeia Capital, L.L.C. | 4.74M | 6.73% |
| 2015-01-09 | Point72 Capital Advisors, Inc. | - | 0.00% |
| 2015-01-09 | Rubric Capital Management, LLC | 5M | 7.10% |
| 2015-01-09 | Point72 Asset Management, L.P. | - | 0.00% |
| 2015-01-09 | Steven A. Cohen | 5M | 7.10% |
| 2015-01-06 | Point72 Asset Management, L.P. | 5M | 7.10% |
| 2014-04-09 | Point72 Asset Management, L.P. | 3.75M | 5.30% |
| 2014-03-27 | S.A.C. Capital Advisors, Inc. | 3.55M | 5.00% |
| 2014-03-27 | Steven A. Cohen | 3.55M | 5.00% |
| 2014-03-27 | S.A.C. Capital Advisors, L.P. | 3.55M | 5.00% |
| 2014-03-27 | S.A.C. Capital Associates, LLC | 3.55M | 5.00% |
| 2014-02-14 | 04-2683227 | - | 0.00% |
| 2013-08-12 | Eagle Energy Operating Company, LLC | 25.04M | 26.80% |
| 2013-08-12 | R/C Energy GP IV, LLC | 25.04M | 26.80% |
| 2013-08-12 | Riverstone/Carlyle Energy Partners IV, L.P. | 25.04M | 26.80% |
| 2013-08-12 | Eagle Energy Company of Oklahoma, LLC | 25.04M | 26.80% |
| 2013-08-12 | Eagle Energy Operating GP, LLC | 25.04M | 26.80% |
| 2013-08-12 | R/C IV Eagle Holdings, L.P. | 25.04M | 26.80% |
| 2013-08-12 | Eagle Energy Production, LLC | 5.01M | 5.40% |
| 2013-02-14 | 04-2683227 | 4.68M | 7.03% |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2025-12-31 | $4.57 | 40.39M | $184.59M | $60.67M | $3.75M | $127.67M |
| 2024-12-31 | $6.00 | 39.66M | $237.93M | -$ | $132.47M | $370.4M |
| 2023-12-31 | $5.93 | 38.96M | $231.04M | $20.75M | $121.83M | $332.12M |
| 2022-12-31 | $8.79 | 38.35M | $337.11M | -$ | $197.97M | $535.07M |
| 2021-12-31 | $3.11 | 37.96M | $118.05M | $18.8M | $232.79M | $332.05M |
| 2020-12-31 | $1.31 | 37.61M | $49.27M | $10.36M | $263.04M | $301.95M |
| 2019-12-31 | $6.61 | 29.3M | $193.68M | -$ | $289.43M | $483.11M |
| 2018-12-31 | $6.24 | 24.97M | $155.75M | $11.34M | $23.06M | $167.46M |
| 2017-12-31 | $13.77 | 25.12M | $345.93M | $68.5M | $128.06M | $405.49M |
| 2016-12-31 | $17.23 | 24.99M | $430.58M | $76.84M | $128.06M | $481.8M |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2026-03-31 | $6.24 | 41.14M | $256.73M | $41.49M | $3.4M | $218.65M |
| 2025-12-31 | $4.57 | 40.39M | $184.59M | $60.67M | $3.75M | $127.67M |
| 2025-09-30 | $5.25 | 40.47M | $212.47M | -$ | $127.53M | $340M |
| 2025-06-30 | $3.20 | 40.35M | $129.12M | -$ | $134.98M | $264.1M |
| 2025-03-31 | $3.74 | 40.19M | $150.3M | -$ | $130.5M | $280.81M |
| 2024-12-31 | $6.00 | 39.1M | $234.6M | -$ | $132.47M | $367.07M |
| 2024-09-30 | $6.53 | 39.78M | $259.78M | -$ | $125.58M | $385.36M |
| 2024-06-30 | $6.72 | 39.63M | $266.31M | $502K | $124.01M | $389.82M |
| 2024-03-31 | $6.63 | 39.41M | $261.29M | $2.99M | $121.44M | $379.74M |
| 2023-12-31 | $5.93 | 39.15M | $232.14M | $20.75M | $121.83M | $333.22M |
| 2023-09-30 | $7.35 | 39.06M | $287.11M | $6.39M | $127.01M | $407.74M |
| 2023-06-30 | $6.77 | 38.97M | $263.83M | $1.86M | $127.28M | $389.25M |