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The company

Ultragenyx Pharmaceutical Inc.

RARE · Nasdaq

Health CareBiotechnologyNot moving yet

RARE stood above a rising 150-day average in 2 of the last 52 weekly readings, and has been out of that trend for the last 7 weeks. It is 31.4% below that average now. Biotechnology: 18% of its 561 stocks in an uptrend (−12 points in four weeks); Health Care: 28% (−6 points in four weeks).

SEC filings

Statistics

Rotation: Not moving yet
Weeks in an uptrend: out for 7
Industry in uptrend: 18% -12 in 4 wk
Insider buys, 12 months: $0
Insider sales, 12 months: $7.4M
Officials’ trades on record: 5
Institutions holding: 291 (+16)

In the rotation

Each square a week: lit when it closed above a rising 150-day average. 2 of 52 weeks.

22 Apr – 21 Oct

Biotechnology: Few of its stocks are in an uptrend and the share has fallen sharply over four weeks. Health Care: A minority of its stocks are in an uptrend and the share has been slipping.

Money in and out

1 Nov 2024 – 1 Oct 2026

Open-market buys above the line and sales below, in dollars.

Congress and officials

5 disclosed lines: House 5, Senate 0, executive 0; 1 people.

Who	Did	Amount	Traded
Gilbert Ray Cisneros, Jr. House: U.S. House ClerkCA31	bought	$1k–$15k	29 Sep 2026filed 12 Oct 2026
Gilbert Ray Cisneros, Jr. House: U.S. House ClerkCA31	bought	$1k–$15k	3 Mar 2026filed 7 Apr 2026
Gilbert Ray Cisneros, Jr. House: U.S. House ClerkCA31	bought	$1k–$15k	18 Feb 2026filed 9 Mar 2026
Gilbert Ray Cisneros, Jr. House: U.S. House ClerkCA31	bought	$1k–$15k	8 Aug 2025filed 12 Sep 2025
Gilbert Ray Cisneros, Jr. House: U.S. House ClerkCA31	bought	$1k–$15k	15 Jul 2025filed 14 Aug 2025

Insiders

Buy orders, 12 months0

Sale orders, 12 months27

Buyers · sellers0 · 9

Who	Did	Shares	Traded
Howard HornChief Financial Officer	sold	7,066at $15.27	15 Oct 2026filed 19 Oct 2026
Theodore Alan HuizengaSVP, Chief Accounting Officer	sold	1,283at $13.57	15 Sep 2026filed 15 Sep 2026
Theodore Alan HuizengaSVP, Chief Accounting Officer	sold	161at $13.99	3 Sep 2026filed 8 Sep 2026
Howard HornChief Financial Officer	sold	4,696at $24.92	3 Aug 2026filed 4 Aug 2026
Karah Herdman ParschauerEVP and Chief Legal Officer	sold	1,900at $24.92	3 Aug 2026filed 4 Aug 2026
Howard HornChief Financial Officer	sold	4,698at $33.13	1 Jul 2026filed 6 Jul 2026
Karah Herdman ParschauerEVP and Chief Legal Officer	sold	1,899at $24.62	15 Jun 2026filed 15 Jun 2026
Corazon (Corsee) D. SandersDirector	sold	2,000at $25.05	15 Jun 2026filed 15 Jun 2026
Howard HornChief Financial Officer	sold	4,653at $23.77	1 Jun 2026filed 1 Jun 2026
Shehnaaz SulimanDirector	sold	5,740at $25.12	18 May 2026filed 18 May 2026
Eric CrombezEVP and Chief Medical Officer	sold	344at $24.96	5 May 2026filed 6 May 2026
Howard HornChief Financial Officer	sold	4,683at $24.90	1 May 2026filed 4 May 2026

Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.

Institutions

Holders291+16 on the quarter

New · exited59 · 43

Reported value$3.5B

Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.

Manager	Shares	Change
BlackRock, Inc.added · filed 7 Aug 2026	10,654,276$355.7M	+3,354,678+46.0%
RTW INVESTMENTS, LPadded · filed 14 Aug 2026	7,796,895$260.3M	+4,148,100+113.7%
VANGUARD PORTFOLIO MANAGEMENT LLCadded · filed 13 Aug 2026	6,790,135$226.7M	+1,404,143+26.1%
AQR CAPITAL MANAGEMENT LLCadded · filed 14 Aug 2026	6,560,809$214.1M	+1,982,785+43.3%
STATE STREET CORPadded · filed 7 Aug 2026	6,158,766$205.6M	+1,137,325+22.6%
VANGUARD CAPITAL MANAGEMENT LLCadded · filed 13 Aug 2026	4,296,491$143.5M	+106,660+2.5%
TWO SIGMA INVESTMENTS, LPadded · filed 14 Aug 2026	3,621,200$120.9M	+1,415,380+64.2%
SANDS CAPITAL MANAGEMENT, LLCreduced · filed 13 Aug 2026	3,158,368$105.5M	-56,165−1.7%
JACOBS LEVY EQUITY MANAGEMENT, INCadded · filed 14 Aug 2026	2,939,719$98.2M	+1,508,648+105.4%
FRONTIER CAPITAL MANAGEMENT CO LLCadded · filed 14 Aug 2026	2,847,936$95.1M	+656,754+30.0%