Christopher Peetz - 06 Jul 2026 Form 4 Insider Report for Mirum Pharmaceuticals, Inc. (MIRM)

Reporting relationship: CHIEF EXECUTIVE OFFICER, Director
Issuer ticker: MIRM
Reported as of: 06 Jul 2026
Net transaction value: -$2,445,382
SEC form: 4
Accepted by SEC: 08 Jul 2026, 17:12:48 UTC
Prior SEC filing: 02 Jun 2026
Next SEC filing: 17 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Judit Ryvkin, Attorney-in-Fact

Key filing fact

Christopher Peetz filed Form 4 for Mirum Pharmaceuticals, Inc. (MIRM) on 08 Jul 2026.

Key facts

This page summarizes Christopher Peetz's Form 4 filing for Mirum Pharmaceuticals, Inc. (MIRM).
6 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 08 Jul 2026, 17:12.

Change

Previous filing in this sequence was filed on 02 Jun 2026.
Current net transaction value: -$2,445,382.

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 0001614740 Primary reporting owner

Peetz Christopher

Relationship: CHIEF EXECUTIVE OFFICER, Director
Address: C/O MIRUM PHARMACEUTICALS, INC., 989 E HILLSDALE BLVD., SUITE 300, FOSTER CITY
Signature: /s/ Judit Ryvkin, Attorney-in-Fact
Signature date: 08 Jul 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: +20,000
Change %: +10%
Price: $2.94^*
Shares after: 214,309
Date: 06 Jul 2026
Ownership: Direct

MIRM transaction

Common Stock

Sale

Transaction value: $1,476,101
Shares: -12,134
Change %: -5.7%
Price: $121.65
Shares after: 202,175
Date: 06 Jul 2026
Ownership: Direct
Footnotes: F1, F2

MIRM transaction

Common Stock

Sale

Transaction value: $511,504
Shares: -4,181
Change %: -2.1%
Price: $122.34
Shares after: 197,994
Date: 06 Jul 2026
Ownership: Direct
Footnotes: F1, F3

MIRM transaction

Common Stock

Sale

Transaction value: $244,386
Shares: -1,975
Change %: -1%
Price: $123.74
Shares after: 196,019
Date: 06 Jul 2026
Ownership: Direct
Footnotes: F1, F4

MIRM transaction

Common Stock

Sale

Transaction value: $213,391
Shares: -1,710
Change %: -0.87%
Price: $124.79
Shares after: 194,309
Date: 06 Jul 2026
Ownership: Direct
Footnotes: F1, F5

MIRM holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 187,500
Date: 06 Jul 2026
Ownership: By The Peetz Family Trust

Reported derivative securities

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

MIRM transaction Derivative

Employee Stock Option (right to buy)

Options Exercise

Transaction value
Shares: -20,000
Change %: -16%
Price: $0.000000^*
Shares after: 108,487
Date: 06 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 20,000
Exercise price: $2.94
Footnotes: F6

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 6 footnotes

Footnote F1

Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026.

Footnote F2

The weighted average sale price for the transaction reported was $121.65, and the range of prices were between $121.11 and $122.105. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

Footnote F3

The weighted average sale price for the transaction reported was $122.34, and the range of prices were between $122.13 and $123.1125. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

Footnote F4

The weighted average sale price for the transaction reported was $123.74, and the range of prices were between $123.24 and $124.10. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

Footnote F5

The weighted average sale price for the transaction reported was $124.79, and the range of prices were between $124.27 and $124.94. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

Footnote F6

The stock option is fully vested.