Mirum Pharmaceuticals, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Ramasastry Saira | — | Option Exercise | 5,000 | $23.51 | $117,550 | 5,000 | Dec 22, 2025 |
| GREY MICHAEL G | — | Option Exercise | 50,000 | $2.94 | $147,000 | 50,000 | Dec 19, 2025 |
| Ramasastry Saira | — | Sale | 1,000 | $70.00 | $70,000 | — | Dec 18, 2025 |
| GREY MICHAEL G | — | Option Exercise | 50,000 | $2.94 | $147,000 | 50,000 | Dec 1, 2025 |
| GREY MICHAEL G | — | Option Exercise | 50,000 | $2.94 | $147,000 | 50,000 | Nov 21, 2025 |
| Peetz Christopher | CHIEF EXECUTIVE OFFICER | Option Exercise | 19,133 | $19.24 | $368,119 | 158,034 | Nov 18, 2025 |
| Brege Laura | — | Option Exercise | 17,000 | $15.00 | $255,000 | 32,703 | Sep 11, 2025 |
| BJERKHOLT ERIC | CHIEF FINANCIAL OFFICER | Sale | 9,578 | $76.01 | $728,024 | 39,945 | Sep 11, 2025 |
| Ramasastry Saira | — | Sale | 17,000 | — | — | — | Sep 8, 2025 |
| BJERKHOLT ERIC | CHIEF FINANCIAL OFFICER | Sale | 8,000 | — | — | 28,236 | Aug 12, 2025 |
| Peetz Christopher | CHIEF EXECUTIVE OFFICER | Option Exercise | 40,000 | $2.94 | $117,600 | 178,641 | Aug 11, 2025 |
| Howe Jolanda | SVP, GLOBAL CONTROLLER | Sale | 10,000 | $58.00 | $580,000 | 2,426 | Aug 7, 2025 |
| Peetz Christopher | CHIEF EXECUTIVE OFFICER | Option Exercise | 40,000 | $2.94 | $117,600 | 178,641 | Aug 7, 2025 |
| Howe Jolanda | SVP, GLOBAL CONTROLLER | Sale | 564 | $48.25 | $27,213 | 2,903 | Jul 1, 2025 |
| Fairey William | — | Sale | 3,203 | $48.42 | $155,089 | 2,500 | Jun 11, 2025 |
| Ramasastry Saira | — | Sale | 2,500 | $45.74 | $114,350 | — | Jun 2, 2025 |
| Ramasastry Saira | — | Option Exercise | 5,703 | — | — | 5,703 | May 29, 2025 |
| Heron Patrick J | — | Option Exercise | 5,703 | — | — | 5,703 | May 29, 2025 |
| Brege Laura | — | Option Exercise | 5,703 | — | — | 15,703 | May 29, 2025 |
| Fairey William | — | Option Exercise | 5,703 | — | — | 5,703 | May 29, 2025 |
| Cardon Lon | — | Option Exercise | 5,703 | — | — | 5,703 | May 29, 2025 |
| Walbert Timothy P | — | Option Exercise | 5,703 | — | — | 5,703 | May 29, 2025 |
| Howe Jolanda | SVP, GLOBAL CONTROLLER | Sale | 2,415 | $44.45 | $107,347 | 2,426 | Mar 18, 2025 |
| Radovich Peter | PRESIDENT AND COO | Option Exercise | 14,440 | — | — | 26,551 | Mar 17, 2025 |
| Heron Patrick J | — | Purchase | 528 | $44.11 | $23,290 | 168,651 | Mar 17, 2025 |
| Howe Jolanda | SVP, GLOBAL CONTROLLER | Sale | 2,900 | $44.21 | $128,209 | 6,647 | Mar 15, 2025 |
| Peetz Christopher | CHIEF EXECUTIVE OFFICER | Sale | 27,279 | $44.21 | $1,206,005 | 138,641 | Mar 15, 2025 |
| Heron Patrick J | — | Purchase | 758 | $42.66 | $32,336 | 166,583 | Mar 11, 2025 |
| Heron Patrick J | — | Purchase | 580 | $43.21 | $25,062 | 165,825 | Mar 6, 2025 |
| Heron Patrick J | — | Purchase | 56 | $45.96 | $2,574 | 163,643 | Mar 4, 2025 |
| Radovich Peter | PRESIDENT AND COO | Sale | 1,169 | $45.74 | $53,470 | 12,111 | Mar 4, 2025 |
| Peetz Christopher | CHIEF EXECUTIVE OFFICER | Sale | 20,608 | $47.19 | $972,492 | 115,920 | Mar 3, 2025 |
| Radovich Peter | PRESIDENT AND COO | Sale | 2,627 | $48.22 | $126,674 | 26,961 | Feb 3, 2025 |
| Peetz Christopher | CHIEF EXECUTIVE OFFICER | Sale | 9,102 | $48.22 | $438,898 | 115,920 | Feb 3, 2025 |
| Howe Jolanda | SVP, GLOBAL CONTROLLER | Sale | 1,064 | $48.22 | $51,306 | 4,232 | Jan 31, 2025 |
| Radovich Peter | PRESIDENT AND COO | Option Exercise | 5,750 | — | — | 32,765 | Jan 24, 2025 |
| BJERKHOLT ERIC | CHIEF FINANCIAL OFFICER | Option Exercise | 2,667 | — | — | 35,946 | Jan 23, 2025 |
| Howe Jolanda | SVP, GLOBAL CONTROLLER | Sale | 902 | $47.92 | $43,224 | 3,524 | Jan 23, 2025 |
| Peetz Christopher | CHIEF EXECUTIVE OFFICER | Sale | 6,837 | $47.92 | $327,629 | 125,022 | Jan 23, 2025 |
| Quan Joanne | CHIEF MEDICAL OFFICER | Sale | 6,969 | $45.86 | $319,598 | 5,649 | Jan 16, 2025 |
| Radovich Peter | PRESIDENT AND COO | Sale | 1,998 | $42.82 | $85,554 | 27,015 | Jan 7, 2025 |
| Peetz Christopher | CHIEF EXECUTIVE OFFICER | Sale | 7,489 | $42.82 | $320,679 | 119,359 | Jan 7, 2025 |
| Howe Jolanda | SVP, GLOBAL CONTROLLER | Sale | 750 | $42.82 | $32,115 | 2,926 | Jan 6, 2025 |
| Howe Jolanda | SVP, GLOBAL CONTROLLER | Sale | 2,500 | $47.10 | $117,750 | 2,426 | Nov 14, 2024 |
| Quan Joanne | CHIEF MEDICAL OFFICER | Award / Grant | 118 | $21.05 | $2,484 | 118 | Nov 8, 2024 |
| BJERKHOLT ERIC | CHIEF FINANCIAL OFFICER | Award / Grant | 475 | $21.05 | $9,999 | 33,279 | Nov 8, 2024 |
| Peetz Christopher | CHIEF EXECUTIVE OFFICER | Award / Grant | 65 | $21.05 | $1,368 | 126,848 | Nov 8, 2024 |
| GREY MICHAEL G | — | Gift | 102,788 | — | — | 186,410 | Sep 27, 2024 |
| Heron Patrick J | — | Purchase | 115 | $37.40 | $4,301 | 162,308 | Sep 18, 2024 |
| BJERKHOLT ERIC | CHIEF FINANCIAL OFFICER | Option Exercise | 18,334 | — | — | 32,804 | Sep 11, 2024 |