| Date | Event | What happened / filer | Source |
|---|---|---|---|
| 2026-07-28 | 13G/A | Schedule 13G amendment — ≥5% beneficial owner (passive) · by BlackRock, Inc. | sec.gov ↗ |
| 2026-07-13 | 13D/A | Schedule 13D amendment — ≥5% beneficial owner (active intent) · by FRESENIUS MEDICAL CARE HOLDINGS INC /NY/ | sec.gov ↗ |
| 2026-06-22 | 13G | Schedule 13G filed — ≥5% beneficial owner (passive) · by DAVIDSON KEMPNER CAPITAL MANAGEMENT LP | sec.gov ↗ |
| 2026-06-15 | 13D/A | Schedule 13D amendment — ≥5% beneficial owner (active intent) · by FRESENIUS MEDICAL CARE HOLDINGS INC /NY/ | sec.gov ↗ |
| 2026-06-11 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-06-11 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2026-06-10 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2026-06-09 | 8-K 5.07 | Submission of matters to a vote of security holders | sec.gov ↗ |
| 2026-06-09 | 8-K 5.03 | Amendments to articles of incorporation or bylaws; fiscal year change | sec.gov ↗ |
| 2026-06-05 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2026-05-08 | 8-K 3.01 | Notice of delisting or failure to satisfy a listing rule | sec.gov ↗ |
| 2026-04-27 | 13D/A | Schedule 13D amendment — ≥5% beneficial owner (active intent) · by FRESENIUS MEDICAL CARE HOLDINGS INC /NY/ | sec.gov ↗ |
| 2026-04-24 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-04-24 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2026-03-24 | 13D/A | Schedule 13D amendment — ≥5% beneficial owner (active intent) · by FRESENIUS MEDICAL CARE HOLDINGS INC /NY/ | sec.gov ↗ |
| 2026-03-19 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2026-03-19 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2026-03-19 | 8-K 8.01 | Other events | sec.gov ↗ |
| 2026-03-19 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2026-01-09 | 13D/A | Schedule 13D amendment — ≥5% beneficial owner (active intent) · by Fresenius Medical Care AG | sec.gov ↗ |
| 2025-12-16 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2025-12-15 | 8-K 3.02 | Unregistered sales of equity securities | sec.gov ↗ |
| 2025-12-15 | 8-K 2.03 | Creation of a direct financial obligation | sec.gov ↗ |
| 2025-12-15 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2025-12-15 | 8-K 1.02 | Termination of a material definitive agreement | sec.gov ↗ |
| 2025-11-26 | 8-K 1.02 | Termination of a material definitive agreement | sec.gov ↗ |
| 2025-11-12 | 8-K 2.02 | Results of operations and financial condition (earnings)earnings history (EARN) → | sec.gov ↗ |
| 2025-10-16 | 13D/A | Schedule 13D amendment — ≥5% beneficial owner (active intent) · by Fresenius Medical Care AG | sec.gov ↗ |
| 2025-10-07 | 8-K 7.01 | Regulation FD disclosure | sec.gov ↗ |
| 2025-10-07 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2025-09-18 | 8-K 2.03 | Creation of a direct financial obligation | sec.gov ↗ |
| 2025-09-18 | 8-K 1.01 | Entry into a material definitive agreement | sec.gov ↗ |
| 2025-08-11 | 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.
