Latest filingSep 03, 2026Most recent Form 4
MIRM
Mirum Pharmaceuticals, Inc.
NasdaqHealthcarePharmaceutical Preparations
Insider activity for last month from 08/04 to 09/04. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$702M4 sells
Net open-market-$702M2 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period8transactions
- M · Option exercise · dominant4 · 50%
- S · Open-market sells4 · 50%
Activity by reported role
A joint filing can contribute to multiple roles12transactions
- Chief executive officer · dominant4 · 33%
- CTRL4 · 33%
- SVP4 · 33%
Distinct insiders active
Reporting-owner CIKs by month · peak Sep 2026 (2)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeHowe JolandaCommon Stock · Direct
616Sep 02, 2026
Peetz ChristopherCommon Stock · Direct
224,440Sep 01, 2026
Howe JolandaEmployee Stock Option (right to buy) · Direct
0Aug 18, 2026
Peetz ChristopherEmployee Stock Option (right to buy) · Direct
58,487Sep 01, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 04 → Sep 04
LessMore
Top insiders
By absolute net value across the selected period- HJ-$3.8M
- PC-$2.9M
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
MIRM transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| MIRM | Howe Jolanda | SVPCTRL | sale10b5-1 | 658 | -$6.58M | S | — | 0.0% | 09/03 | 09/02 |
| MIRM | Peetz Christopher | CEO | exercise10b5-1 | 30.0k | $0 | M | — | 0.0% | 09/03 | 09/01 |
| MIRM | Peetz Christopher | CEO | sale10b5-1 | 21.6k | -$214M | S | — | 0.0% | 09/03 | 09/01 |
| MIRM | Peetz Christopher | CEO | sale10b5-1 | 8.31k | -$81.5M | S | — | 0.0% | 09/03 | 09/01 |
| MIRM | Peetz Christopher | CEO | exercise10b5-1 | 30.0k | $8.80M | M | — | 0.0% | 09/03 | 09/01 |
| MIRM | Howe Jolanda | SVPCTRL | exercise | 40.0k | $0 | M | −3.8% | 08/19 | 08/18 | |
| MIRM | Howe Jolanda | SVPCTRL | sale | 40.0k | -$400M | S | −3.8% | 08/19 | 08/18 | |
| MIRM | Howe Jolanda | SVPCTRL | exercise | 40.0k | $25.0M | M | −3.8% | 08/19 | 08/18 |
Mirum Pharmaceuticals, Inc. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Mirum Pharmaceuticals, Inc.?
Howe Jolanda, Peetz Christopher.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Howe Jolanda reported a sale on Sep 02, 2026 valued at $6.58M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $7,026,201.04. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.