Mirum Pharmaceuticals Ownership & Insider Activity

Mirum Pharmaceuticals (MIRM) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 0.9% of shares outstanding. Institutional investors hold 71.5%. Over the past 90 days, insiders made 3 sales worth $859K.

Shares Outstanding

60.981M

Shares Float

46.489M

Insider Shares Owned

578.116K

Insider % Owned

0.9%

Institutional Shares Held

46.404M

Institutional % Held

71.5%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$859K total

Net Activity

Net Selling

Net Value (90d)

-$859K

Mirum Pharmaceuticals Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Sep 11, 2026	ERIC BJERKHOLT	CHIEF FINANCIAL OFFICER	SELL-OPTIONS	8.390K	$98.37	$978K
Sep 2, 2026	Jolanda Howe	SVP, GLOBAL CONTROLLER	SELL	658.000	$100.00	$66K
Sep 1, 2026	Christopher Peetz	CHIEF EXECUTIVE OFFICER	SELL-OPTIONS	—	$50.81	$2.9M
Aug 18, 2026	Jolanda Howe	SVP, GLOBAL CONTROLLER	SELL-OPTIONS	—	$53.13	$3.7M
Aug 11, 2026	ERIC BJERKHOLT	CHIEF FINANCIAL OFFICER	SELL	6.001K	$99.90	$600K
Aug 10, 2026	Christopher Peetz	CHIEF EXECUTIVE OFFICER	SELL-OPTIONS	—	$50.93	$1.9M
Aug 3, 2026	Jolanda Howe	SVP, GLOBAL CONTROLLER	SELL	1.840K	$105.29	$194K
Jul 6, 2026	Christopher Peetz	CHIEF EXECUTIVE OFFICER	SELL-OPTIONS	—	$62.60	$2.4M
Jul 6, 2026	ERIC BJERKHOLT	CHIEF FINANCIAL OFFICER	SELL	5.000K	$122.25	$611K
Jul 1, 2026	Jolanda Howe	SVP, GLOBAL CONTROLLER	SELL	2.721K	$120.00	$327K
Jun 17, 2026	Jolanda Howe	SVP, GLOBAL CONTROLLER	SELL	2.594K	$101.95	$264K
Jun 8, 2026	ERIC BJERKHOLT	CHIEF FINANCIAL OFFICER	SELL	2.607K	$60.15	$406K
Jun 1, 2026	Christopher Peetz	CHIEF EXECUTIVE OFFICER	SELL-OPTIONS	—	$49.39	$2.8M
May 29, 2026	Saira Ramasastry	—	SELL-OPTIONS	—	$100.00	$398K
May 15, 2026	Saira Ramasastry	—	SELL-OPTIONS	—	$66.49	$172K