Mirum Pharmaceuticals
MIRM · NASDAQ
$85.07+$2.83 (+3.44%)TodayMarket closed ·
Prev close $82.24
Who owns MIRM
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 51.9% of MIRM’s shares.
- Frazier Life Sciences Management, L.P.12.6%
- Janus Henderson Investors9.7%
- BlackRock Institutional Trust Company, N.A.6.2%
- T. Rowe Price Associates, Inc.4.2%
- Next 6 largest institutions19.2%
- All other shareholders48.1%
| Holder | Shares | % of shares |
|---|---|---|
| Frazier Life Sciences Management, L.P. | 7.68M | 12.59% |
| Janus Henderson Investors | 5.91M | 9.69% |
| BlackRock Institutional Trust Company, N.A. | 3.75M | 6.15% |
| T. Rowe Price Associates, Inc. | 2.59M | 4.25% |
| Vanguard Portfolio Management, LLC | 2.38M | 3.90% |
| Vanguard Capital Management, LLC | 2.25M | 3.70% |
| State Street Investment Management (US) | 2.17M | 3.56% |
| Fidelity Management & Research Company LLC | 2.12M | 3.48% |
| William Blair Investment Management, LLC | 1.40M | 2.30% |
| Geode Capital Management, L.L.C. | 1.39M | 2.29% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 1.65M | 2.71% |
| Fidelity Strategic Advisers Fidelity US Total Stk | 1.33M | 2.18% |
| iShares Russell 2000 ETF | 1.22M | 2.00% |
| Vanguard Small-Cap Index Fund | 1.19M | 1.95% |
| American Funds SMALLCAP World Fund | 1.12M | 1.84% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $18.12M (30 trades) of MIRM on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Myers Robert Paul | Award | 25.00K | — |
| Myers Robert Paul | Award | 40.00K | — |
| Peetz Christopher | Option exercise | 6.89K | — |
| Peetz Christopher | Option exercise | 5.30K | — |
| Peetz Christopher | Option exercise | 6.89K | $109.38K |
| Peetz Christopher | Option exercise | 5.30K | $101.80K |
| BJERKHOLT ERIC | Sale | 9.94K | $978.09K |
| BJERKHOLT ERIC | Option exercise | 18.33K | — |
| BJERKHOLT ERIC | Option exercise | 18.33K | — |
| Howe Jolanda | Sale | 658 | $65.80K |
Short interest
Settled Sep 30, 2026
- Shares short
- 6.99M
- Days to cover
- 7.67
- % of shares outstanding
- 11.46%
- Average daily volume
- 910.92K
- Change since last report
- +11.2%
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