Jolanda Howe - 31 Jan 2026 Form 4 Insider Report for Mirum Pharmaceuticals, Inc. (MIRM)

Reporting relationship: SVP, GLOBAL CONTROLLER
Issuer ticker: MIRM
Reported as of: 31 Jan 2026
Net transaction value: -$99,998
SEC form: 4
Accepted by SEC: 03 Feb 2026, 21:45:05 UTC
Prior SEC filing: 30 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

Jolanda Howe filed Form 4 for Mirum Pharmaceuticals, Inc. (MIRM) on 03 Feb 2026.

Key facts

This page summarizes Jolanda Howe's Form 4 filing for Mirum Pharmaceuticals, Inc. (MIRM).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 03 Feb 2026, 21:45.

Change

Previous filing in this sequence was filed on 30 Jan 2026.
Current net transaction value: -$99,998.

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 0001974200 Primary reporting owner

Howe Jolanda

Relationship: SVP, GLOBAL CONTROLLER
Address: C/O MIRUM PHARMACEUTICALS, INC., 989 E HILLSDALE BLVD., SUITE 300, FOSTER CITY
Signature: /s/ Judit Ryvkin, Attorney-in-Fact
Signature date: 03 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MIRM transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,771
Change %: +48%
Price
Shares after: 5,471
Date: 31 Jan 2026
Ownership: Direct
Footnotes: F1

MIRM transaction

Common Stock

Sale

Transaction value: $99,998
Shares: -968
Change %: -18%
Price: $103.30
Shares after: 4,503
Date: 02 Feb 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

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

MIRM transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -1,771
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 31 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,771
Exercise price
Footnotes: F1, F3

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer).

Footnote F2

Shares sold to cover tax withholding obligations associated with the vesting of restricted stock units.

Footnote F3

The restricted stock units vest in a series of three successive equal annual installments beginning January 31, 2024. 1,772 shares vested on January 31, 2024 ; 1,772 shares vested January 31, 2025 and the remaining 1,771 shares will vest on January 31, 2026.