BJERKHOLT ERIC 4
4 · Mirum Pharmaceuticals, Inc. · Filed Jan 30, 2026
Research Summary
AI-generated summary of this filing
Mirum (MIRM) CFO Eric Bjerkholt Receives 49,900 Share Awards
What Happened Eric Bjerkholt, Chief Financial Officer of Mirum Pharmaceuticals (MIRM), was granted a total of 49,900 derivative awards on January 28, 2026: 18,140 units @ $0.00, 11,760 units @ $0.00, and 20,000 units @ $0.00. These are restricted stock units (RSUs) and performance RSUs (PSUs) — i.e., contingent rights to receive Mirum common shares when the awards vest. No cash was paid for these awards; they are compensation grants, not open-market purchases.
Key Details
- Transaction date: January 28, 2026; Form 4 filed January 30, 2026 (timely filing).
- Grants: 18,140 RSUs (acq. $0.00), 11,760 RSUs (acq. $0.00), 20,000 PSUs (acq. $0.00) — total 49,900 awards.
- Vesting summaries (from footnotes):
- 18,140: 25% vests one year after Jan 28, 2026; remaining balance vests in 36 equal monthly installments thereafter.
- 11,760: RSUs (each equals one share) with 1/3 vesting on each anniversary of Jan 28, 2026 (fully vested after 3 years).
- 20,000 PSUs: performance criteria were met on Jan 28, 2026; 2/3 of these shares vest on March 15, 2026 and the remaining 1/3 vests on March 15, 2027.
- Shares owned after the transaction: Not specified in the filing.
- Transaction code: A = Award/Grant; these are derivative awards (RSUs/PSUs). No 10b5-1, tax withholding, or sale noted in the filing.
Context RSUs and PSUs are compensation awards that convert into common shares only when vesting conditions (time and/or performance) are met; awards reported at $0 acquisition price are typical for such grants. Because these are grants (not open-market purchases or sales), they reflect compensation rather than an immediate buy/sell signal. The PSU performance condition was confirmed on Jan 28, 2026, which triggered the stated future vesting dates.
Insider Transaction Report
- Award
Stock Option (right to buy)
[F1]2026-01-28+18,140→ 18,140 totalExercise: $100.85Exp: 2036-01-27→ Common Stock (18,140 underlying) - Award
Restricted Stock Units
[F2][F3]2026-01-28+11,760→ 11,760 total→ Common Stock (11,760 underlying) - Award
Performance Restricted Stock Units
[F2][F4]2026-01-28+20,000→ 20,000 total→ Common Stock (20,000 underlying)
Footnotes (4)
- [F1]1/4th of the shares vest one year after January 28, 2026 (the "Vesting Commencement Date") and the balance of the shares vest in a series of 36 successive equal monthly installments measured from the first anniversary of the Vesting Commencement Date.
- [F2]Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
- [F3]1/3rd of the shares subject to the restricted stock units shall vest on each anniversary of January 28, 2026 (the "Vesting Commencement Date"), such that the entire award will be vested on the three-year anniversary of the Vesting Commencement Date.
- [F4]On January 23, 2024, the reporting person was granted performance restricted stock units ("PSUs") which vest upon satisfaction of certain performance criteria. On January 28, 2026, performance criteria were determined to have been met. The shares subject to the PSUs vest as follows: 2/3 of the shares vest on March 15, 2026 and 1/3 of the shares vest on March 15, 2027.