| 2026-08-19 | 8-K | Form 8-K, Item 8.01 |
| 2026-08-11 | 8-K | Form 8-K, Item 8.01 |
| 2026-08-05 | 10-Q | Form 10-Q for the quarter ended Jun 30 |
| 2026-08-04 | Press release | Ultragenyx Reports Second Quarter 2026 Financial Results and Corporate Update |
| 2026-08-04 | 8-K | Form 8-K, Item 2.02 results |
| 2026-07-28 | Press release | Ultragenyx to Host Conference Call for Second Quarter 2026 Financial Results and Corporate Update |
| 2026-05-18 | 8-K | Form 8-K, Item 5.02 |
| 2026-05-06 | 10-Q | Form 10-Q for the quarter ended Mar 31 |
| 2026-05-05 | Press release | Ultragenyx Reports First Quarter 2026 Financial Results and Corporate Update |
| 2026-05-05 | 8-K | Form 8-K, Item 2.02 results |
| 2026-04-29 | Press release | Ultragenyx to Host Conference Call for First Quarter 2026 Financial Results and Corporate Update |
| 2026-04-02 | 8-K | Form 8-K, Item 8.01 |
| 2026-03-30 | 8-K | Form 8-K, Item 8.01 |
| 2026-03-27 | Proxy | Definitive proxy statement |
| 2026-03-12 | 8-K | Form 8-K, Item 8.01 |
| 2026-02-23 | 8-K | Form 8-K, Item 8.01 |
| 2026-02-18 | 10-K | Annual report on Form 10-K, FY25 |
| 2026-02-15 | Transcript | Q4 FY25 earnings call transcript |
| 2026-02-12 | 8-K | Form 8-K, Item 2.02 results |
| 2026-02-03 | 8-K | Form 8-K, Item 8.01 |
| 2026-01-30 | 8-K | Form 8-K, Item 8.01 |
| 2026-01-12 | 8-K | Form 8-K, Item 2.02 results |
| 2025-12-30 | 8-K | Form 8-K, Item 8.01 |
| 2025-12-29 | 8-K | Form 8-K, Item 8.01 |
| 2025-11-05 | 10-Q | Form 10-Q for the quarter ended Sep 30 |
| 2025-11-04 | 8-K | Form 8-K, Item 2.02 results |
| 2025-10-30 | 8-K | Form 8-K, Item 8.01 |
| 2025-09-08 | 8-K | Form 8-K, Item 8.01 |
| 2025-08-18 | 8-K | Form 8-K, Item 8.01 |
| 2025-08-06 | 10-Q | Form 10-Q for the quarter ended Jun 30 |
| 2025-08-05 | 8-K | Form 8-K, Item 2.02 results |
| 2025-07-31 | 8-K | Form 8-K, Item 8.01 |
| 2025-07-11 | 8-K | Form 8-K, Item 8.01 |
| 2025-07-09 | 8-K | Form 8-K, Item 8.01 |
| 2025-06-27 | 8-K | Form 8-K, Item 8.01 |
| 2025-05-19 | 8-K | Form 8-K, Item 5.02 |
| 2025-05-07 | 10-Q | Form 10-Q for the quarter ended Mar 31 |
| 2025-05-06 | 8-K | Form 8-K, Item 2.02 results |
| 2025-03-28 | Proxy | Definitive proxy statement |
| 2025-02-19 | 10-K | Annual report on Form 10-K, FY24 |