Jolanda Howe - 15 Mar 2026 Form 4 Insider Report for Mirum Pharmaceuticals, Inc. (MIRM)

Role
SVP, GLOBAL CONTROLLER
Signature
/s/ Judit Ryvkin, Attorney-in-Fact
Issuer symbol
MIRM
Transactions as of
15 Mar 2026
Net transactions value
-$435,239
Form type
4
Filing time
17 Mar 2026, 19:30:13 UTC
Previous filing
03 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Howe Jolanda SVP, GLOBAL CONTROLLER C/O MIRUM PHARMACEUTICALS, INC., 989 E HILLSDALE BLVD., SUITE 300, FOSTER CITY /s/ Judit Ryvkin, Attorney-in-Fact 17 Mar 2026 0001974200

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MIRM Common Stock Options Exercise +2,658 +59% 7,161 15 Mar 2026 Direct F1
transaction MIRM Common Stock Options Exercise +6,000 +84% 13,161 15 Mar 2026 Direct F1
transaction MIRM Common Stock Sale $435,239 -4,732 -36% $91.98 8,429 16 Mar 2026 Direct F2

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 Performance Restricted Stock Units Options Exercise -2,658 -100% $0.000000* 0 15 Mar 2026 Common Stock 2,658 Direct F1, F3
transaction MIRM Performance Restricted Stock Units Options Exercise -6,000 -67% $0.000000* 3,000 15 Mar 2026 Common Stock 6,000 Direct F1, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
F2 Shares sold to cover tax withholding obligations associated with the vesting of the performance restricted stock units.
F3 The shares vest as follows: 2/3 of the shares vest on March 15, 2025 and 1/3 of the shares vest on March 15, 2026.
F4 The shares vest as follows: 2/3 of the shares vest on March 15, 2026 and 1/3 of the shares vest on March 15, 2027.