Christopher Peetz - Sep 29, 2021 Form 4 Insider Report for Mirum Pharmaceuticals, Inc. (MIRM)

Role: President and CEO, Director
Signature: /s/ Jody Howe, Attorney-in-Fact
Stock symbol: MIRM
Transactions as of: Sep 29, 2021
Transactions value $: -$70,708
Form type: 4
Date filed: 10/1/2021, 08:00 PM
Previous filing: Sep 27, 2021
Next filing: Nov 29, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MIRM	Common Stock	Award	$0	+21.9K	+774.61%	$0.00	24.7K	Sep 29, 2021	Direct	F1
transaction	MIRM	Common Stock	Sale	-$70.7K	-3.67K	-14.87%	$19.26	21K	Oct 1, 2021	Direct	F2
holding	MIRM	Common Stock						202K	Sep 29, 2021	By The Peetz Family Trust

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

Explanation of Responses:

Id	Content
F1	The shares became issuable upon the satisfaction of certain performance conditions that were established at the time of the Compensation Committee's approval of a performance-based restricted stock unit award on March 9, 2021. On September 29, 2021, the Compensation Committee certified the achievement of the performance criteria resulting in the vesting of 10,937 shares on September 29, 2021 and 10,938 shares on June 30, 2023.
F2	Shares sold to cover tax withholding obligations associated with the vesting of the performance-based restricted stock unit award granted to the Reporting Person on March 9, 2021.

Content

The shares became issuable upon the satisfaction of certain performance conditions that were established at the time of the Compensation Committee's approval of a performance-based restricted stock unit award on March 9, 2021. On September 29, 2021, the Compensation Committee certified the achievement of the performance criteria resulting in the vesting of 10,937 shares on September 29, 2021 and 10,938 shares on June 30, 2023.

Shares sold to cover tax withholding obligations associated with the vesting of the performance-based restricted stock unit award granted to the Reporting Person on March 9, 2021.