29/11/2022 - Mirum Pharmaceuticals Inc.: Current Report - Form 8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 29, 2022

Mirum Pharmaceuticals, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware		001-38981		83-1281555
(State or Other Jurisdiction of Incorporation)		(Commission File Number)		(IRS Employer Identification No.)

950 Tower Lane Suite 1050
Foster City, California		94404
(Address of Principal Executive Offices)		(Zip Code)

Registrant's Telephone Number, Including Area Code: 650667-4085

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-Kfiling is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencementcommunications pursuant to Rule 14d-2(b)under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencementcommunications pursuant to Rule 13e-4(c)under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common stock, par value $0.0001 per share		MIRM		Nasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2of the Securities Exchange Act of 1934 (§ 240.12b-2of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☒

Item 8.01

Other Events.

On November 29, 2022, Mirum Pharmaceuticals, Inc. (the "Company") determined that it will discontinue the Company's OHANA Phase 2b clinical trial of volixibat in intrahepatic cholestasis of pregnancy ("ICP") due to enrollment feasibility. ICP is a setting of cholestasis during pregnancy with pruritus and elevated bile acid levels that can lead to fetal complications. An interim analysis did show that patients treated with volixibat saw meaningful reductions in serum bile acids and pruritus; however, the Company has decided to discontinue the OHANA Phase 2b clinical trial due to the unique challenges in enrollment in the high-risk pregnancy setting, which allows the Company to prioritize other programs.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		Mirum Pharmaceuticals, Inc.
Date: November 29, 2022			By:		/s/ Christopher Peetz
			Christopher Peetz
			President and Chief Executive Officer