Christopher Peetz - Jan 21, 2025 Form 4 Insider Report for Mirum Pharmaceuticals, Inc. (MIRM)

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

Type	Sym	Class	Transaction	Value $	Shares	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MIRM	Stock Option (right to buy)	Award	$0	+154K	$0.00	154K	Jan 21, 2025	Common Stock	154K	$47.98	Direct	F1
transaction	MIRM	Restricted Stock Units	Award	$0	+38.4K	$0.00	38.4K	Jan 21, 2025	Common Stock	38.4K		Direct	F2, F3
transaction	MIRM	Performance Restricted Stock Units	Award	$0	+75K	$0.00	75K	Jan 21, 2025	Common Stock	75K		Direct	F2, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	1/4th of the shares vest one year after January 21, 2025 (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 21, 2025 (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 31, 2023, the reporting person was granted performance restricted stock units ("PSUs") which vest upon satisfaction of certain performance criteria. On January 21, 2025, 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, 2025 and 1/3 of the shares vest on March 15, 2026.