| Date | Event | What happened / filer | Source |
|---|---|---|---|
| 2026-07-27 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2026-06-18 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-05-15 | 8-K 1.04 | Mine safety — reporting of shutdowns | sec.gov ↗ |
| 2026-05-14 | 13G | Schedule 13G filed — ≥5% beneficial owner (passive) · by PABRAI MOHNISH | sec.gov ↗ |
| 2026-05-08 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-05-08 | 8-K 5.07 | Submission of matters to a vote of security holders | sec.gov ↗ |
| 2026-05-08 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2026-04-28 | 13G | Schedule 13G filed — ≥5% beneficial owner (passive) · by VANGUARD PORTFOLIO MANAGEMENT LLC | sec.gov ↗ |
| 2026-04-24 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2026-03-26 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by VANGUARD GROUP INC | sec.gov ↗ |
| 2026-02-27 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-02-27 | 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 RENAISSANCE TECHNOLOGIES LLC | sec.gov ↗ |
| 2026-01-30 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2025-12-12 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2025-11-25 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2025-11-06 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2025-11-06 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2025-09-19 | 8-K 1.04 | Mine safety — reporting of shutdowns | sec.gov ↗ |
| 2025-08-13 | 13G | Schedule 13G filed — ≥5% beneficial owner (passive) · by RENAISSANCE TECHNOLOGIES LLC | sec.gov ↗ |
| 2025-08-11 | 13G | Schedule 13G filed — ≥5% beneficial owner (passive) · by STATE STREET CORP | sec.gov ↗ |
| 2025-08-08 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2025-08-08 | 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.
