Ultragenyx Pharmaceutical Ownership & Insider Activity

Ultragenyx Pharmaceutical (RARE) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 2.4% of shares outstanding. Institutional investors hold 55.0%. Over the past 90 days, insiders made 4 sales worth $184K.

Shares Outstanding

98.589M

Shares Float

95.327M

Insider Shares Owned

2.351M

Insider % Owned

2.4%

Institutional Shares Held

54.199M

Institutional % Held

55.0%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$184K total

Net Activity

Net Selling

Net Value (90d)

-$184K

Ultragenyx Pharmaceutical Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Sep 15, 2026	Alan Theodore Huizenga	SVP, CHIEF ACCOUNTING OFFICER	SELL	1.283K	$13.57	$17K
Sep 3, 2026	Alan Theodore Huizenga	SVP, CHIEF ACCOUNTING OFFICER	SELL	161.000	$13.99	$2K
Aug 3, 2026	Karah Parschauer	EVP AND CHIEF LEGAL OFFICER	SELL	1.900K	$24.92	$47K
Aug 3, 2026	Howard Horn	CHIEF FINANCIAL OFFICER	SELL	4.696K	$24.92	$117K
Jul 1, 2026	Howard Horn	CHIEF FINANCIAL OFFICER	SELL	4.698K	$33.13	$156K
Jun 15, 2026	Corsee Corazon Sanders	—	SELL	2.000K	$25.05	$50K
Jun 15, 2026	Karah Parschauer	EVP AND CHIEF LEGAL OFFICER	SELL	1.899K	$24.62	$47K
Jun 1, 2026	Howard Horn	CHIEF FINANCIAL OFFICER	SELL	4.653K	$23.77	$111K
May 14, 2026	SHEHNAAZ SULIMAN	—	GRANT	2.011K	$25.12	$144K
May 5, 2026	Eric Crombez	EVP AND CHIEF MEDICAL OFFICER	SELL	344.000	$24.96	$9K
May 1, 2026	Howard Horn	CHIEF FINANCIAL OFFICER	SELL	4.683K	$24.90	$117K

Date	Member	Party	Chamber	Action	Amount
Sep 29, 2026	Gilbert Ray Cisneros	D	House	Purchase	$1,001 - $15,000
Mar 3, 2026	Gilbert Ray Cisneros	D	House	Purchase	$1,001 - $15,000
Feb 18, 2026	Gilbert Ray Cisneros	D	House	Purchase	$1,001 - $15,000
Aug 8, 2025	Gilbert Ray Cisneros	D	House	Purchase	$1,001 - $15,000
Jul 15, 2025	Gilbert Ray Cisneros	D	House	Purchase	$1,001 - $15,000