Patrick J. Heron - Aug 31, 2023 Form 4 Insider Report for Mirum Pharmaceuticals, Inc. (MIRM)

Role: Director, 10%+ Owner
Signature: /s/ Steve R. Bailey, as Attorney-in-Fact
Stock symbol: MIRM
Transactions as of: Aug 31, 2023
Transactions value $: $3,884,764
Form type: 4
Date filed: 9/5/2023, 12:51 PM
Previous filing: Jun 14, 2023
Next filing: Sep 13, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MIRM	Common Stock	Purchase	$3.88M	+148K		$26.25	148K	Aug 31, 2023	By Frazier Life Sciences X, L.P.	F2
holding	MIRM	Common Stock						3.57M	Aug 31, 2023	By Frazier Life Sciences IX, L.P.	F1

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

Explanation of Responses:

Id	Content
F1	The shares are held directly by Frazier Life Sciences IX, L.P. FHMLS IX, L.P. is the general partner of Frazier Life Sciences IX, L.P. FHMLS IX, L.L.C. is the general partner of FHMLS IX, L.P. The Reporting Person and James N. Topper are the managing members of FHMLS IX, L.L.C. and share voting and dispositive power over the shares held by Frazier Life Sciences IX, L.P. The Reporting Person disclaims beneficial ownership of the shares, except to the extent of his pecuniary interest therein.
F2	The shares are held directly by Frazier Life Sciences X, L.P. FHMLS X, L.P. is the general partner of Frazier Life Sciences X, L.P. FHMLS X, L.L.C. is the general partner of FHMLS X, L.P. The Reporting Person and James N. Topper are the managing members of FHMLS X, L.L.C. and share voting and dispositive power over the shares held by Frazier Life Sciences X, L.P. The Reporting Person disclaims beneficial ownership of the shares, except to the extent of his pecuniary interest therein.

Content

The shares are held directly by Frazier Life Sciences IX, L.P. FHMLS IX, L.P. is the general partner of Frazier Life Sciences IX, L.P. FHMLS IX, L.L.C. is the general partner of FHMLS IX, L.P. The Reporting Person and James N. Topper are the managing members of FHMLS IX, L.L.C. and share voting and dispositive power over the shares held by Frazier Life Sciences IX, L.P. The Reporting Person disclaims beneficial ownership of the shares, except to the extent of his pecuniary interest therein.

The shares are held directly by Frazier Life Sciences X, L.P. FHMLS X, L.P. is the general partner of Frazier Life Sciences X, L.P. FHMLS X, L.L.C. is the general partner of FHMLS X, L.P. The Reporting Person and James N. Topper are the managing members of FHMLS X, L.L.C. and share voting and dispositive power over the shares held by Frazier Life Sciences X, L.P. The Reporting Person disclaims beneficial ownership of the shares, except to the extent of his pecuniary interest therein.