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

Role
CHIEF EXECUTIVE OFFICER, Director
Signature
/s/ Judit Ryvkin, Attorney-in-Fact
Issuer symbol
MIRM
Transactions as of
28 Jan 2026
Net transactions value
$0
Form type
4
Filing time
30 Jan 2026, 18:30:04 UTC
Previous filing
27 Jan 2026
Next filing
03 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Peetz Christopher CHIEF EXECUTIVE OFFICER, Director C/O MIRUM PHARMACEUTICALS, INC., 989 E HILLSDALE BLVD., SUITE 300, FOSTER CITY /s/ Judit Ryvkin, Attorney-in-Fact 30 Jan 2026 0001614740

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MIRM Stock Option (right to buy) Award $0 +67,000 $0.000000 67,000 28 Jan 2026 Common Stock 67,000 $100.85 Direct F1
transaction MIRM Restricted Stock Units Award $0 +43,500 $0.000000 43,500 28 Jan 2026 Common Stock 43,500 Direct F2, F3
transaction MIRM Performance Restricted Stock Units Award $0 +75,000 $0.000000 75,000 28 Jan 2026 Common Stock 75,000 Direct F2, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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.