Dudediligence.

Ultragenyx Pharmaceutical Inc

RARENASDAQ · Pharmaceutical Preparations
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Last 12 months

Sales planned on beside the trades reported on , and whether each names a .

Planned ·

$1,473,714

16 notices · 59,807 sh

Oct 2025 to Oct 2026

Reported ·

$3,612,524

23 sales · 0 buys

Oct 2025 to Jun 2026

The two figures cover different periods.

11 of 23 reported sales carry the 10b5-1 box. Together they are 0.15% of the shares on issue.

PLANNED · FORM 144Oct 2025 to Oct 2026REPORTED · FORM 4Oct 2025 to Jun 2026N2025DJ2026FMAMJJASO2026-09-15: THEODORE HUIZENGA, Form 1442026-08-03: HOWARD HORN, Form 1442026-07-01: HOWARD HORN, Form 1442026-06-15: KARAH PARSCHAUER, Form 1442026-06-15: CORAZON D. SANDERS, Form 1442026-06-01: HOWARD HORN, Form 1442026-05-18: SHEHNAAZ SULIMAN, Form 1442026-05-01: HOWARD HORN, Form 1442026-04-01: HOWARD HORN, Form 1442026-03-10: KARAH PARSCHAUER, Form 1442026-03-06: KARAH PARSCHAUER, Form 1442026-03-03: HOWARD HORN, Form 1442026-03-02: HOWARD HORN, Form 1442026-02-02: HOWARD HORN, Form 1442026-01-02: HOWARD HORN, Form 1442025-12-10: HOWARD HORN, Form 1442025-10-13: Horn Howard, sold2025-12-10: Horn Howard, sold2025-12-29: Huizenga Theodore Alan, sold2026-01-02: Horn Howard, sold2026-02-02: Horn Howard, sold2026-03-02: Crombez Eric, sold2026-03-02: Horn Howard, sold2026-03-02: Huizenga Theodore Alan, sold2026-03-02: Parschauer Karah Herdman, sold2026-03-02: KAKKIS EMIL D, sold2026-03-02: Harris Erik, sold2026-03-02: Pinion John Richard, sold2026-03-06: Parschauer Karah Herdman, sold2026-04-01: Horn Howard, sold2026-05-01: Horn Howard, sold2026-05-05: Crombez Eric, sold2026-05-18: SULIMAN SHEHNAAZ, sold2026-06-01: Horn Howard, sold2026-06-15: Parschauer Karah Herdman, sold2026-06-15: Sanders Corazon (Corsee) D., sold
under a no plan named▼ salesize is dollars

Form 144 notices, newest first

2026-09-15THEODORE HUIZENGA, SVP, Chief Accounting Officer$17,462
1,283 shplan 2026-06-04Form 4s on file end Jun 23144 ↗
2026-08-03HOWARD HORN, Chief Financial Officer$117,024
4,696 shplan 2025-09-02Form 4s on file end Jun 23144 ↗
2026-07-01HOWARD HORN, Chief Financial Officer$155,645
4,698 shplan 2025-09-02Form 4s on file end Jun 23144 ↗
2026-06-15KARAH PARSCHAUER, EVP and Chief Legal Officer$92,506
3,799 shplan 2026-03-16144 ↗
Form 4, 2026-06-15: sold 1,899 at $24.62 Form 4 ↗
2026-06-15CORAZON D. SANDERS, Director$50,100
2,000 shno plan date144 ↗
Form 4, 2026-06-15: sold 2,000 at $25.05 Form 4 ↗
2026-06-01HOWARD HORN, Chief Financial Officer$110,602
4,653 shplan 2025-09-02144 ↗
Form 4, 2026-06-01: sold 4,653 at $23.77 Form 4 ↗
2026-05-18SHEHNAAZ SULIMAN, Director$144,189
5,740 shplan 2025-09-15144 ↗
Form 4, 2026-05-18: sold 5,740 at $25.12 Form 4 ↗
2026-05-01HOWARD HORN, Chief Financial Officer$116,607
4,683 shplan 2025-09-02144 ↗
Form 4, 2026-05-04: sold 4,683 at $24.90 Form 4 ↗
2026-04-01HOWARD HORN, Chief Financial Officer$98,203
4,683 shplan 2025-09-02144 ↗
Form 4, 2026-04-02: sold 4,683 at $20.97 Form 4 ↗
2026-03-10KARAH PARSCHAUER, EVP and Chief Legal Officer$79,526
3,508 shno plan dateno Form 4 on file144 ↗
2026-03-06KARAH PARSCHAUER, EVP and Chief Legal Officer$128,775
6,018 shno plan date144 ↗
Form 4, 2026-03-10: sold 9,526 at $21.87 Form 4 ↗
2026-03-03HOWARD HORN, Chief Financial Officer$36,624
1,635 shplan 2025-09-02no Form 4 on file144 ↗
2026-03-02HOWARD HORN, Chief Financial Officer$70,302
3,119 shplan 2025-09-02144 ↗
Form 4, 2026-03-03: sold 10,044 at $22.65 Form 4 ↗
2026-02-02HOWARD HORN, Chief Financial Officer$72,117
3,061 shplan 2025-09-02144 ↗
Form 4, 2026-02-03: sold 3,061 at $23.56 Form 4 ↗
2026-01-02HOWARD HORN, Chief Financial Officer$71,946
3,150 shplan 2025-09-02144 ↗
Form 4, 2026-01-05: sold 3,150 at $22.84 Form 4 ↗
2025-12-10HOWARD HORN, Chief Financial Officer$112,087
3,081 shplan 2025-09-02144 ↗
Form 4, 2025-12-11: sold 3,081 at $36.38 Form 4 ↗