Eric Bjerkholt - 28 Jan 2026 Form 4 Insider Report for Mirum Pharmaceuticals, Inc. (MIRM)

Reporting relationship: CHIEF FINANCIAL OFFICER
Issuer ticker: MIRM
Reported as of: 28 Jan 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 30 Jan 2026, 18:30:08 UTC
Prior SEC filing: 27 Jan 2026
Next SEC filing: 17 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Judit Ryvkin, Attorney-in-Fact

Key filing fact

Eric Bjerkholt filed Form 4 for Mirum Pharmaceuticals, Inc. (MIRM) on 30 Jan 2026.

Key facts

This page summarizes Eric Bjerkholt's Form 4 filing for Mirum Pharmaceuticals, Inc. (MIRM).
3 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 30 Jan 2026, 18:30.

Change

Previous filing in this sequence was filed on 27 Jan 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001197350 Primary reporting owner

BJERKHOLT ERIC

Relationship: CHIEF FINANCIAL OFFICER
Address: C/O MIRUM PHARMACEUTICALS, INC., 989 E HILLSDALE BLVD., SUITE 300, FOSTER CITY
Signature: /s/ Judit Ryvkin, Attorney-in-Fact
Signature date: 30 Jan 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MIRM transaction Derivative

Stock Option (right to buy)

Award

Transaction value: $0
Shares: +18,140
Change %
Price: $0.000000
Shares after: 18,140
Date: 28 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 18,140
Exercise price: $100.85
Footnotes: F1

MIRM transaction Derivative

Restricted Stock Units

Award

Transaction value: $0
Shares: +11,760
Change %
Price: $0.000000
Shares after: 11,760
Date: 28 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 11,760
Exercise price
Footnotes: F2, F3

MIRM transaction Derivative

Performance Restricted Stock Units

Award

Transaction value: $0
Shares: +20,000
Change %
Price: $0.000000
Shares after: 20,000
Date: 28 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 20,000
Exercise price
Footnotes: F2, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote 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.

Footnote F2

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Footnote 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.

Footnote 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.