| Date | Event | What happened / filer | Source |
|---|---|---|---|
| 2026-05-15 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2026-05-13 | 8-K 9.01 | Financial statements and exhibits (amendment) | sec.gov ↗ |
| 2026-05-11 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2026-05-07 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-05-07 | 8-K 5.07 | Submission of matters to a vote of security holders | sec.gov ↗ |
| 2026-05-07 | 8-K 5.03 | Amendments to articles of incorporation or bylaws; fiscal year change | sec.gov ↗ |
| 2026-04-30 | 13G | Schedule 13G filed — ≥5% beneficial owner (passive) · by VANGUARD CAPITAL MANAGEMENT LLC | sec.gov ↗ |
| 2026-04-02 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-04-02 | 8-K 3.02 | Unregistered sales of equity securities | sec.gov ↗ |
| 2026-04-02 | 8-K 2.01 | Completion of acquisition or disposition of assets | sec.gov ↗ |
| 2026-04-02 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2026-03-27 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by VANGUARD GROUP INC | sec.gov ↗ |
| 2026-03-24 | 8-K 2.03 | Creation of a direct financial obligation | sec.gov ↗ |
| 2026-03-24 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2026-03-11 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2026-03-11 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-03-11 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2026-03-06 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by Invesco Ltd. | sec.gov ↗ |
| 2026-03-06 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by FMR LLC | sec.gov ↗ |
| 2026-02-25 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2026-02-12 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by Invesco Ltd. | sec.gov ↗ |
| 2026-02-05 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-02-05 | 8-K 3.02 | Unregistered sales of equity securities | sec.gov ↗ |
| 2026-02-05 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2026-02-05 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by FMR LLC | sec.gov ↗ |
| 2026-01-30 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by VANGUARD GROUP INC | sec.gov ↗ |
| 2026-01-29 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-01-21 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by BlackRock, Inc. | sec.gov ↗ |
| 2025-12-03 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by Frontier TopCo Partnership, L.P. | sec.gov ↗ |
| 2025-12-02 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2025-11-14 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by Frontier TopCo Partnership, L.P. | sec.gov ↗ |
| 2025-11-13 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2025-11-06 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by Invesco Ltd. | sec.gov ↗ |
| 2025-11-04 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2025-10-31 | 13G | Schedule 13G filed — ≥5% beneficial owner (passive) · by VANGUARD GROUP INC | sec.gov ↗ |
| 2025-10-23 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2025-10-02 | 13G | Schedule 13G filed — ≥5% beneficial owner (passive) · by BlackRock, Inc. | sec.gov ↗ |
| 2025-09-22 | 8-K 2.03 | Creation of a direct financial obligation | sec.gov ↗ |
| 2025-09-22 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2025-09-18 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2025-09-18 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2025-09-10 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by Frontier TopCo Partnership, L.P. | sec.gov ↗ |
| 2025-09-10 | 8-K 2.03 | Creation of a direct financial obligation (amendment) | sec.gov ↗ |
| 2025-09-10 | 8-K 1.01 | Entry into a material definitive agreement (amendment) | sec.gov ↗ |
| 2025-09-09 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2025-09-08 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by FMR LLC | sec.gov ↗ |
| 2025-09-05 | 8-K 2.03 | Creation of a direct financial obligation | sec.gov ↗ |
| 2025-09-05 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2025-09-02 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2025-09-02 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2025-08-29 | 8-K 5.02 | Departure/election of directors or officers; compensation | sec.gov ↗ |
| 2025-08-13 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by Frontier TopCo Partnership, L.P. | sec.gov ↗ |
| 2025-08-11 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2025-08-07 | 13G | Schedule 13G filed — ≥5% beneficial owner (passive) · by Invesco Ltd. | sec.gov ↗ |
| 2025-08-06 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
8-K item codes from the filing header; 13D/G subject and filer verified against the filing index page.
