Mirum Pharmaceuticals, Inc.
Total Trades
107
Buys
9
Sells
58
Largest Trade
N/A
Insiders
14
Institutional Funds
223
Inst. Value
$1M+
Activist Filings
41
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Peetz Christopher | President and CEO | SELL | $100K–$500K | 5K | $25.65 | Jul 5, 2023 |
| GREY MICHAEL G | Director | SELL | $100K–$500K | 15K | $29.00 | Jun 9, 2023 |
| GREY MICHAEL G | Director | EXERCISE | $15K–$50K | 15K | $2.94 | Jun 9, 2023 |
| GREY MICHAEL G | Director | SELL | $100K–$500K | 15K | $28.00 | May 5, 2023 |
| GREY MICHAEL G | Director | EXERCISE | $15K–$50K | 15K | $2.94 | May 5, 2023 |
| O'Donnell Niall | Director | SELL | $1M+ | 300K | $19.86 | Nov 16, 2022 |
| Flynn James E | 10% Owner | SELL | $500K+ | 38K | $25.01 | Jun 8, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 223 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 6.8M | $1M+ | SH |
| VANGUARD GROUP INC | 2.2M | $1M+ | SH |
| STATE STREET CORP | 2.1M | $1M+ | SH |
| EVENTIDE ASSET MANAGEMENT, LLC | 2.1M | $1M+ | SH |
| Novo Holdings A/S | 1.3M | $1M+ | SH |
| TANG CAPITAL MANAGEMENT LLC | 1.2M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 924K | $1M+ | SH |
| Clearbridge Investments, LLC | 866K | $1M+ | SH |
| BNP PARIBAS FINANCIAL MARKETS | 656K | $1M+ | SH |
| Pictet Asset Management Holding SA | 577K | $1M+ | SH |
| Soleus Capital Management, L.P. | 574K | $1M+ | SH |
| Candriam S.C.A. | 570K | $1M+ | SH |
| LORD, ABBETT & CO. LLC | 568K | $1M+ | SH |
| Connor, Clark & Lunn Investment Management Ltd. | 522K | $1M+ | SH |
| First Turn Management, LLC | 482K | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 439K | $1M+ | SH |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 422K | $1M+ | SH |
| LOOMIS SAYLES & CO L P | 420K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 409K | $1M+ | SH |
| TimesSquare Capital Management, LLC | 396K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 17, 2026
11.8%
6.1M shares
Eventide Asset Management, LLC
SC 13G/A · Feb 13, 2026
4.1%
2.1M shares
Frazier Life Sciences IX, L.P.
SC 13D/A · Jan 27, 2026
5.9%
3.6M shares
SC 13G/A · Dec 5, 2025
10.6%
5.4M shares
SC 13G/A · Nov 14, 2025
1.5%
773K shares
SC 13G/A · Nov 14, 2025
10.0%
5.0M shares
Frazier Life Sciences IX, L.P.
SC 13D/A · Nov 4, 2025
7.1%
3.6M shares
Frazier Life Sciences IX, L.P.
SC 13D/A · Aug 20, 2025
7.1%
3.6M shares
SC 13G/A · Aug 14, 2025
10.6%
5.2M shares
SC 13G/A · Jun 6, 2025
10.3%
5.1M shares
SC 13G/A · May 15, 2025
9.7%
4.8M shares
SC 13G/A · May 7, 2025
10.1%
5.0M shares
SC 13G/A · Feb 14, 2025
9.5%
4.6M shares
Eventide Asset Management, LLC
SC 13G/A · Feb 14, 2025
5.4%
2.6M shares
Biotechnology Value Fund, L.P.
SC 13G/A · Nov 14, 2024
3.3%
1.6M shares
Janus Henderson Group plc EIN #00-0000000
SC 13G/A · Nov 14, 2024
9.4%
4.5M shares
Eventide Asset Management, LLC
SC 13G/A · Nov 14, 2024
7.2%
3.4M shares
SC 13G/A · Nov 12, 2024
7.1%
3.4M shares
SC 13G/A · Oct 22, 2024
7.1%
3.4M shares
Janus Henderson Group plc EIN #00-0000000
SC 13G · Jul 10, 2024
10.6%
5.0M shares
Eventide Asset Management, LLC
SC 13G/A · Feb 14, 2024
5.8%
2.7M shares
The Vanguard Group - 23-1945930
SC 13G · Feb 13, 2024
5.3%
2.5M shares
SC 13G · Jan 31, 2024
5.4%
2.5M shares
Biotechnology Value Fund, L.P.
SC 13G · Sep 18, 2023
5.0%
2.3M shares
Frazier Life Sciences IX, L.P.
SC 13D/A · Sep 5, 2023
7.7%
3.6M shares
New Enterprise Associates 16, L.P.
SC 13D/A · Jun 23, 2023
5.8%
2.2M shares
Deerfield Management Company, L.P.
SC 13G/A · May 3, 2023
0.0%
0 shares
Frazier Life Sciences IX, L.P.
SC 13D/A · Apr 14, 2023
9.4%
3.6M shares
SC 13G/A · Mar 8, 2023
4.6%
1.7M shares
Rock Springs Capital Management LP
SC 13G/A · Feb 14, 2023
4.9%
1.8M shares
Eventide Asset Management, LLC
SC 13G · Feb 14, 2023
5.6%
2.1M shares
Deerfield Management Company, L.P.
SC 13G/A · Feb 10, 2023
5.5%
2.0M shares
SC 13G · Feb 3, 2023
5.8%
2.1M shares
I.R.S. IDENTIFICATION NO. RiverVest Venture Fund IV, L.P.
SC 13D/A · Dec 1, 2022
4.4%
1.6M shares
Deerfield Management Company, L.P.
SC 13G/A · Sep 12, 2022
5.5%
2.0M shares
SC 13D/A · Aug 18, 2022
4.8%
1.8M shares
Frazier Life Sciences IX, L.P.
SC 13D/A · Aug 16, 2022
9.7%
3.6M shares
SC 13D/A · Aug 2, 2022
5.9%
1.9M shares
SC 13D/A · Apr 8, 2022
6.9%
2.2M shares
Rock Springs Capital Management LP
SC 13G/A · Feb 14, 2022
5.0%
1.5M shares
SC 13G/A · Feb 11, 2022
0.0%
0 shares