Mirum Pharmaceuticals, Inc. (MIRM) Insider Trading
Over the last 3 months, MIRM insiders made 0 open-market buys and 13 sales, a net sale of -$4.4M (SEC Form 4). Over the last 6 months, 227 institutions increased and 168 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
13
Net (3m)
-$4.4M
Insider trades by month Buys Sells
Jan
Feb
Mar
Apr
May
Jun
Context3-month price +26.7%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 18, 2026 | Howe Jolandaofficer: SVP, GLOBAL CONTROLLER | Sell | 2,594 | $101.95 |
| Jun 17, 2026 | Walbert Timothy Pdirector | Grant | 1,980 | — |
| Jun 17, 2026 | Fischer Laurentdirector | Grant | 3,772 | $101.00 |
| Jun 17, 2026 | Heron Patrick Jdirector | Grant | 3,772 | $101.00 |
| Jun 17, 2026 | Fairey Williamdirector | Grant | 3,772 | $101.00 |
| Jun 17, 2026 | Fischer Laurentdirector | Grant | 1,980 | — |
| Jun 17, 2026 | Cardon Londirector | Grant | 1,980 | — |
| Jun 17, 2026 | Ramasastry Sairadirector | Grant | 3,772 | $101.00 |
| Jun 17, 2026 | GREY MICHAEL Gdirector | Grant | 3,772 | $101.00 |
| Jun 17, 2026 | Cardon Londirector | Grant | 3,772 | $101.00 |
| Jun 17, 2026 | Fairey Williamdirector | Grant | 1,980 | — |
| Jun 17, 2026 | Brege Lauradirector | Grant | 1,980 | — |
| Jun 17, 2026 | GREY MICHAEL Gdirector | Grant | 1,980 | — |
| Jun 17, 2026 | Ramasastry Sairadirector | Grant | 1,980 | — |
| Jun 17, 2026 | Walbert Timothy Pdirector | Grant | 3,772 | $101.00 |
| Jun 17, 2026 | Heron Patrick Jdirector | Grant | 1,980 | — |
| Jun 17, 2026 | Brege Lauradirector | Grant | 3,772 | $101.00 |
| Jun 9, 2026 | BJERKHOLT ERICofficer: CHIEF FINANCIAL OFFICER | Sell | 2,258 | $92.84 |
| Jun 9, 2026 | BJERKHOLT ERICofficer: CHIEF FINANCIAL OFFICER | Sell | 1,175 | $93.95 |
| Jun 9, 2026 | BJERKHOLT ERICofficer: CHIEF FINANCIAL OFFICER | Sell | 1,567 | $95.12 |
| Jun 9, 2026 | BJERKHOLT ERICofficer: CHIEF FINANCIAL OFFICER | Option | 2,393 | $26.49 |
| Jun 8, 2026 | Radovich Peterofficer: PRESIDENT AND COO | Option | 16,988 | $19.19 |
| Jun 2, 2026 | Fischer Laurentdirector | Option | 3,977 | — |
| Jun 2, 2026 | Ramasastry Sairadirector | Option | 3,977 | — |
| Jun 2, 2026 | Walbert Timothy Pdirector | Option | 3,977 | — |
| Jun 2, 2026 | Peetz Christopherdirector, officer: CHIEF EXECUTIVE OFFICER | Sell | 6,926 | $96.15 |
| Jun 2, 2026 | Peetz Christopherdirector, officer: CHIEF EXECUTIVE OFFICER | Sell | 2,602 | $94.64 |
| Jun 2, 2026 | Peetz Christopherdirector, officer: CHIEF EXECUTIVE OFFICER | Sell | 1,021 | $98.20 |
| Jun 2, 2026 | Peetz Christopherdirector, officer: CHIEF EXECUTIVE OFFICER | Option | 30,000 | $2.94 |
| Jun 2, 2026 | Ramasastry Sairadirector | Sell | 3,977 | $100.00 |
Source: MIRM SEC Form 4 filings, latest Jun 18, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their MIRM positions over the last 6 months (SEC Form 13F).
Increased
227
New positions
126
Reduced
168
Sold out
78
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| JANUS HENDERSON GROUP PLC | Increased | 13.7M | May 18, 2026 |
| FRAZIER LIFE SCIENCES MANAGEMENT, L.P. | Increased | 7.7M | May 15, 2026 |
| FRAZIER LIFE SCIENCES MANAGEMENT, L.P. | Unchanged | 6.8M | Feb 13, 2026 |
| JANUS HENDERSON GROUP PLC | Increased | 6.1M | Feb 17, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 4.8M | May 15, 2026 |
| BLACKROCK, INC. | Increased | 3.8M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 3.6M | Feb 12, 2026 |
| VANGUARD GROUP INC | Increased | 2.6M | Jan 29, 2026 |
| STATE STREET CORP | Increased | 2.1M | Feb 13, 2026 |
| EVENTIDE ASSET MANAGEMENT, LLC | Reduced | 2.1M | Feb 13, 2026 |
| FMR LLC | Increased | 2.0M | May 15, 2026 |
| STATE STREET CORP | Reduced | 1.9M | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 1.7M | May 15, 2026 |
| BVF INC/IL | Increased | 1.6M | May 15, 2026 |
| BVF INC/IL | Unchanged | 1.5M | Feb 17, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.