| 2026-02-18 | 10-K | Stock registered under Section 12(b) | Class A Warrants to purchase Common Stock · EXEEW · NASDAQ |
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| 2026-02-18 | 10-K | Stock registered under Section 12(b) | Class B Warrants to purchase Common Stock · EXEEZ · NASDAQ |
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| 2026-02-18 | 10-K | Stock registered under Section 12(b) | Class C Warrants to purchase Common Stock · EXEEL · NASDAQ |
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| 2025-02-26 | 10-K | Stock registered under Section 12(b) | Class A Warrants to purchase Common Stock · EXEEW · NASDAQ |
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| 2025-02-26 | 10-K | Stock registered under Section 12(b) | Class B Warrants to purchase Common Stock · EXEEZ · NASDAQ |
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| 2025-02-26 | 10-K | Stock registered under Section 12(b) | Class C Warrants to purchase Common Stock · EXEEL · NASDAQ |
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| 2024-02-21 | 10-K | Stock registered under Section 12(b) | Common Stock, $0.01 par value per share · CHK · NASDAQ |
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| 2024-02-21 | 10-K | Stock registered under Section 12(b) | Class A Warrants to purchase Common Stock · CHKEW · NASDAQ |
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| 2024-02-21 | 10-K | Stock registered under Section 12(b) | Class B Warrants to purchase Common Stock · CHKEZ · NASDAQ |
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| 2024-02-21 | 10-K | Stock registered under Section 12(b) | Class C Warrants to purchase Common Stock · CHKEL · NASDAQ |
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| 2023-02-22 | 10-K | Stock registered under Section 12(b) | Common Stock, $0.01 par value per share · CHK · NASDAQ |
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| 2023-02-22 | 10-K | Stock registered under Section 12(b) | Class A Warrants to purchase Common Stock · CHKEW · NASDAQ |
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| 2023-02-22 | 10-K | Stock registered under Section 12(b) | Class B Warrants to purchase Common Stock · CHKEZ · NASDAQ |
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| 2023-02-22 | 10-K | Stock registered under Section 12(b) | Class C Warrants to purchase Common Stock · CHKEL · NASDAQ |
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| 2022-02-24 | 10-K | Stock registered under Section 12(b) | Common Stock, $0.01 par value per share · CHK · NASDAQ |
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| 2022-02-24 | 10-K | Stock registered under Section 12(b) | Class A Warrants to purchase Common Stock · CHKEW · NASDAQ |
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| 2022-02-24 | 10-K | Stock registered under Section 12(b) | Class B Warrants to purchase Common Stock · CHKEZ · NASDAQ |
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| 2022-02-24 | 10-K | Stock registered under Section 12(b) | Class C Warrants to purchase Common Stock · CHKEL · NASDAQ |
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| 2021-04-30 | 10-K/A | Stock registered under Section 12(b) | Common Stock, $0.01 par value per share · CHK · NASDAQ |
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| 2021-04-30 | 10-K/A | Stock registered under Section 12(b) | Class A Warrants to purchase Common Stock · CHKEW · NASDAQ |
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| 2021-04-30 | 10-K/A | Stock registered under Section 12(b) | Class B Warrants to purchase Common Stock · CHKEZ · NASDAQ |
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| 2021-04-30 | 10-K/A | Stock registered under Section 12(b) | Class C Warrants to purchase Common Stock · CHKEL · NASDAQ |
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| 2021-04-30 | 10-K/A | Smaller reporting company | Yes |
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| 2021-03-01 | 10-K | Stock registered under Section 12(b) | Common Stock, $0.01 par value per share · CHK · NASDAQ |
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| 2021-03-01 | 10-K | Stock registered under Section 12(b) | Class A Warrants to purchase Common Stock · CHKEW · NASDAQ |
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| 2021-03-01 | 10-K | Stock registered under Section 12(b) | Class B Warrants to purchase Common Stock · CHKEZ · NASDAQ |
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| 2021-03-01 | 10-K | Stock registered under Section 12(b) | Class C Warrants to purchase Common Stock · CHKEL · NASDAQ |
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| 2021-03-01 | 10-K | Smaller reporting company | Yes |
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| 2021-03-01 | 10-K | Well-known seasoned issuer | No |
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| 2020-04-29 | 10-K/A | Security registered under Section 12(b) | 6.625% Senior Notes due 2020 · CHK20A · NYSE |
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| 2020-04-29 | 10-K/A | Security registered under Section 12(b) | 6.875% Senior Notes due 2020 · CHK20 · NYSE |
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| 2020-04-29 | 10-K/A | Security registered under Section 12(b) | 6.125% Senior Notes due 2021 · CHK21 · NYSE |
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| 2020-04-29 | 10-K/A | Security registered under Section 12(b) | 5.375% Senior Notes due 2021 · CHK21A · NYSE |
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| 2020-04-29 | 10-K/A | Security registered under Section 12(b) | 4.875% Senior Notes due 2022 · CHK22 · NYSE |
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| 2020-04-29 | 10-K/A | Security registered under Section 12(b) | 5.75% Senior Notes due 2023 · CHK23 · NYSE |
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| 2020-04-29 | 10-K/A | Security registered under Section 12(b) | 4.5% Cumulative Convertible Preferred Stock · CHK Pr D · NYSE |
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| 2020-04-29 | 10-K/A | Stock registered under Section 12(b) | Common Stock, par value $0.01 · CHK · NYSE |
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| 2020-02-27 | 10-K | Security registered under Section 12(b) | 6.625% Senior Notes due 2020 · CHK20A · NYSE |
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| 2020-02-27 | 10-K | Security registered under Section 12(b) | 6.875% Senior Notes due 2020 · CHK20 · NYSE |
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| 2020-02-27 | 10-K | Security registered under Section 12(b) | 6.125% Senior Notes due 2021 · CHK21 · NYSE |
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| 2020-02-27 | 10-K | Security registered under Section 12(b) | 5.375% Senior Notes due 2021 · CHK21A · NYSE |
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| 2020-02-27 | 10-K | Security registered under Section 12(b) | 4.875% Senior Notes due 2022 · CHK22 · NYSE |
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| 2020-02-27 | 10-K | Security registered under Section 12(b) | 5.75% Senior Notes due 2023 · CHK23 · NYSE |
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| 2020-02-27 | 10-K | Security registered under Section 12(b) | 4.5% Cumulative Convertible Preferred Stock · CHK Pr D · NYSE |
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| 2020-02-27 | 10-K | Stock registered under Section 12(b) | Common Stock, par value $0.01 · CHK · NYSE |
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