Jolanda Howe - 05 Dec 2023 Form 4 Insider Report for Mirum Pharmaceuticals, Inc. (MIRM)

Role: SVP, Global Controller
Signature: /s/ Jody Howe
Issuer symbol: MIRM
Transactions as of: 05 Dec 2023
Net transactions value: -$73,650
Form type: 4
Filing time: 06 Dec 2023, 17:16:48 UTC
Previous filing: 28 Aug 2023
Next filing: 09 Jan 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MIRM	Common Stock	Options Exercise	$7,350	+2,500		$2.94^*	2,500	05 Dec 2023	Direct
transaction	MIRM	Common Stock	Sale	$81,000	-2,500	-100%	$32.40	0	05 Dec 2023	Direct

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)	Options Exercise	$0	-2,500	-4.3%	$0.000000	55,400	05 Dec 2023	Common Stock	2,500	$2.94	Direct	F1

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

Explanation of Responses:

Id	Content
F1	1/4th of the 62,500 shares originally subject to the option vested one year after February 28, 2019, and the balance of the shares vest in a series of 36 successive equal monthly installments at the end of each month thereafter.