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Mirum Pharmaceuticals, Inc. (NASDAQ:MIRM)
US · Delayed Price · Currency is USD
Healthcare · Biotechnology
83.27+2.88 (+3.58%)
Market cap
$5.41B
Health Score
Analyst consensus
Listed since
Jul 18, 2019
Website
Insider Score
––Not scored
MIRM Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
MIRM Stock Insider Trading Activity
MIRM stock’s insider trading shows 20 sales on the open market for an estimated $14.42M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Howe Jolanda Other | Option exercise | 16,112 | $19.24 | $309.99K | 2616% | 16,728 | Oct 16, 2026 | — | Form 4 |
| Peetz Christopher CEO | Option exercise | 6,892 | $15.87 | $109.38K | 3.5% | 206,637 | Oct 6, 2026 | — | Form 4 |
| Peetz Christopher CEO | Option exercise | 5,305 | $19.19 | $101.80K | 2.7% | 199,745 | Oct 6, 2026 | — | Form 4 |
| BJERKHOLT ERIC CFO | Sell | 9,943 | $98.37 | $978.09K | 18.2% | 44,745 | Sep 14, 2026 | — | Form 4 |
| BJERKHOLT ERIC CFO | Option exercise | 18,333 | — | — | 50.4% | 54,688 | Sep 11, 2026 | — | Form 4 |
| Howe Jolanda Other | Sell | 658 | $100.00 | $65.80K | 51.6% | 616 | Sep 2, 2026 | — | Form 4 |
| Peetz Christopher CEO | Sell | 21,688 | $98.91 | $2.15M | 10.0% | 194,440 | Sep 1, 2026 | — | Form 4 |
| Peetz Christopher CEO | Sell | 8,312 | $98.08 | $815.24K | 3.7% | 216,128 | Sep 1, 2026 | — | Form 4 |
| Peetz Christopher CEO | Option exercise | 30,000 | $2.94 | $88.08K | 15.4% | 224,440 | Sep 1, 2026 | — | Form 4 |
| Howe Jolanda Other | Option exercise | 40,000 | $6.27 | $250.80K | 3140% | 41,274 | Aug 18, 2026 | — | Form 4 |
| Howe Jolanda Other | Sell | 40,000 | $100.00 | $4.00M | 96.9% | 1,274 | Aug 18, 2026 | — | Form 4 |
| BJERKHOLT ERIC CFO | Sell | 6,001 | $99.90 | $599.51K | 14.2% | 36,355 | Aug 11, 2026 | — | Form 4 |
| Peetz Christopher CEO | Option exercise | 20,000 | $2.94 | $58.72K | 10.3% | 214,309 | Aug 10, 2026 | — | Form 4 |
| Peetz Christopher CEO | Sell | 11,683 | $98.51 | $1.15M | 5.5% | 202,626 | Aug 10, 2026 | — | Form 4 |
| Peetz Christopher CEO | Sell | 6,017 | $99.25 | $597.19K | 3.0% | 196,609 | Aug 10, 2026 | — | Form 4 |
| Peetz Christopher CEO | Sell | 2,300 | $100.14 | $230.32K | 1.2% | 194,309 | Aug 10, 2026 | — | Form 4 |
| Howe Jolanda Other | Sell | 1,840 | $105.29 | $193.73K | 59.1% | 1,274 | Aug 3, 2026 | — | Form 4 |
| BJERKHOLT ERIC CFO | Sell | 300 | $124.94 | $37.48K | 0.7% | 42,181 | Jul 6, 2026 | — | Form 4 |
| BJERKHOLT ERIC CFO | Sell | 1,048 | $122.43 | $128.31K | 2.4% | 43,009 | Jul 6, 2026 | — | Form 4 |
| BJERKHOLT ERIC CFO | Sell | 3,124 | $121.67 | $380.10K | 6.6% | 44,057 | Jul 6, 2026 | — | Form 4 |
| Peetz Christopher CEO | Sell | 1,710 | $124.79 | $213.39K | 0.9% | 194,309 | Jul 6, 2026 | — | Form 4 |
| Peetz Christopher CEO | Sell | 1,975 | $123.74 | $244.39K | 1.0% | 196,019 | Jul 6, 2026 | — | Form 4 |
| Peetz Christopher CEO | Sell | 4,181 | $122.34 | $511.50K | 2.1% | 197,994 | Jul 6, 2026 | — | Form 4 |
| Peetz Christopher CEO | Option exercise | 20,000 | $2.94 | $58.72K | 10.3% | 214,309 | Jul 6, 2026 | — | Form 4 |
| Peetz Christopher CEO | Sell | 12,134 | $121.65 | $1.48M | 5.7% | 202,175 | Jul 6, 2026 | — | Form 4 |
| BJERKHOLT ERIC CFO | Sell | 528 | $123.84 | $65.39K | 1.2% | 42,481 | Jul 6, 2026 | — | Form 4 |
| Howe Jolanda Other | Sell | 2,721 | $120.00 | $326.52K | 46.6% | 3,114 | Jul 1, 2026 | — | Form 4 |
| Howe Jolanda Other | Sell | 2,594 | $101.95 | $264.46K | 30.8% | 5,835 | Jun 17, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.