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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1759425	Mirum Pharmaceuticals Inc.	MIRM	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1197350	Eric Bjerkholt	C/O Mirum Pharmaceuticals, Inc. 950 Tower Lane, Suite 1050 Foster City CA 94404	Chief Financial Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2023-09-11	10,000	$29.65	10,000	No	4	P	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (right to buy)	Acquisiton	2023-09-11	110,000	$0.00	110,000	$30.43
Common Stock	Restricted Stock Units	Acquisiton	2023-09-11	55,000	$0.00	55,000	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
110,000		2033-09-10	No	4	A	Direct
55,000			No	4	A	Direct

Footnotes

The price reported on this Form 4 is a weighted average price. The shares were purchased in multiple transactions ranging from $29.61 to $29.65, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth herein.
1/4th of the shares subject to the Option will vest one year after September 11, 2023 (the "Vesting Commencement Date") and the balance of the shares will vest in a series of 36 successive equal monthly installments measured from the first anniversary of the VestingCommencement Date.
Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
The restricted stock units vest in a series of three successive equal annual installments beginning on the one year anniversary of September 11, 2023.