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United States Biotechnology & Medical Research

Ultragenyx Pharmaceutical Inc (RARE)

Track

Over the last 90 days, Ultragenyx Pharmaceutical Inc. has seen net insider selling totaling $664,655.71, with executives contributing $470,366.91 in net sales. A total of 14 transactions were recorded, all of which were sales. The stock has experienced a 24.0% increase in price over the same period.
Stock chart
Ticker: RARE Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Sanders Corazon (Corsee) D.
1 sale — total 100,000 USD
Sale 15 Jun 2026
Value US$2,730,838.04 | Price 190.17 | Shares 86,083
Sale 15 Jun 2026
Value US$1,927,161.30 | Price 153.08 | Shares 3,774
Proposed sale 15 Jun 2026
Value US$100,000.00 | Price 24.35 | Shares 1,000
Proposed sale 15 Jun 2026
Value US$100,000.00 | Price 25.05 | Shares 1,000
Sale 1 Jun 2026
Value US$110,601.81 | Price 23.77 | Shares 4,653
Proposed sale 1 Jun 2026
Value US$110,601.81 | Price 23.77 | Shares 4,653
Sale 18 May 2026
Value US$144,188.80 | Price 25.12 | Shares 5,740
Proposed sale 18 May 2026
Value US$144,188.80 | Price 25.12 | Shares 5,740
Planned sale 5 May 2026
Value US$8,586.24 | Price 24.96 | Shares 344
Sale 1 May 2026
Value US$116,606.70 | Price 24.90 | Shares 4,683
Proposed sale 1 May 2026
Value US$116,606.70 | Price 24.90 | Shares 4,683
Sale 1 Apr 2026
Value US$98,202.51 | Price 20.97 | Shares 4,683
Sale 1 Apr 2026
Value US$98,202.51 | Price 20.97 | Shares 4,683
Proposed sale 1 Apr 2026
Value US$98,202.51 | Price 20.97 | Shares 4,683
Proposed sale 10 Mar 2026
Value US$79,526.36 | Price 22.67 | Shares 3,508
Sale 10 Mar 2026
Value US$79,526.36 | Price 22.67 | Shares 3,508
Sale 6 Mar 2026
Value US$128,785.20 | Price 21.40 | Shares 6,018
Proposed sale 6 Mar 2026
Value US$128,774.97 | Price 21.40 | Shares 6,018
Sale 3 Mar 2026
Value US$36,624.00 | Price 22.40 | Shares 1,635
Proposed sale 3 Mar 2026
Value US$36,624.00 | Price 22.40 | Shares 1,635
Planned sale 2 Mar 2026
Value US$228,661.20 | Price 22.80 | Shares 10,029
Planned sale 2 Mar 2026
Value US$240,289.20 | Price 22.80 | Shares 10,539
Planned sale 2 Mar 2026
Value US$1,240,411.20 | Price 22.80 | Shares 54,404
Sale 2 Mar 2026
Value US$37,209.60 | Price 22.80 | Shares 1,632
Planned sale 2 Mar 2026
Value US$185,478.00 | Price 22.80 | Shares 8,135
Sale 2 Mar 2026
Value US$70,302.26 | Price 22.54 | Shares 3,119
Sale 2 Mar 2026
Value US$120,612.00 | Price 22.80 | Shares 5,290
Planned sale 2 Mar 2026
Value US$160,261.20 | Price 22.80 | Shares 7,029
Proposed sale 2 Mar 2026
Value US$70,302.26 | Price 22.54 | Shares 3,119
Sale 2 Feb 2026
Value US$72,117.16 | Price 23.56 | Shares 3,061
Proposed sale 2 Feb 2026
Value US$72,117.16 | Price 23.56 | Shares 3,061
Sale 2 Jan 2026
Value US$71,946.00 | Price 22.84 | Shares 3,150
Proposed sale 2 Jan 2026
Value US$71,946.00 | Price 22.84 | Shares 3,150
Planned sale 29 Dec 2025
Value US$2,922.30 | Price 34.38 | Shares 85
Sale 10 Dec 2025
Value US$112,086.78 | Price 36.38 | Shares 3,081
Proposed sale 10 Dec 2025
Value US$112,086.78 | Price 36.38 | Shares 3,081
Sale 13 Oct 2025
Value US$250,252.42 | Price 31.51 | Shares 7,942
Sale 18 Sep 2025
Value US$1,866.88 | Price 29.17 | Shares 64
Proposed sale 12 Sep 2025
Value US$76,366.50 | Price 31.17 | Shares 2,450
Planned sale 12 Sep 2025
Value US$76,366.50 | Price 31.17 | Shares 2,450
Planned sale 5 Sep 2025
Value US$2,636.76 | Price 31.39 | Shares 84
Sale 20 Jun 2025
Value US$89,922.95 | Price 37.39 | Shares 2,405
Proposed sale 20 Jun 2025
Value US$89,922.95 | Price 37.39 | Shares 2,405
Planned sale 5 May 2025
Value US$20,404.80 | Price 39.24 | Shares 520
Sale 21 Apr 2025
Value US$8,496.62 | Price 35.11 | Shares 242
Sale 6 Mar 2025
Value US$72,114.00 | Price 40.40 | Shares 1,785
Sale 3 Mar 2025
Value US$253,778.80 | Price 42.10 | Shares 6,028
Planned sale 3 Mar 2025
Value US$376,584.50 | Price 42.10 | Shares 8,945
Sale 3 Mar 2025
Value US$3,091,571.40 | Price 42.10 | Shares 73,434
Sale 3 Mar 2025
Value US$607,881.90 | Price 42.10 | Shares 14,439
Sale 3 Mar 2025
Value US$540,816.60 | Price 42.10 | Shares 12,846
Planned sale 3 Mar 2025
Value US$635,836.30 | Price 42.10 | Shares 15,103
Sale 3 Mar 2025
Value US$40,710.70 | Price 42.10 | Shares 967
Sale 28 Feb 2025
Value US$1,062,000.00 | Price 42.48 | Shares 25,000
Proposed sale 28 Feb 2025
Value US$1,062,100.00 | Price 42.48 | Shares 25,000
Sale 27 Feb 2025
Value US$32,490.00 | Price 42.75 | Shares 760
Sale 27 Feb 2025
Value US$95,733.90 | Price 42.93 | Shares 2,230
Proposed sale 27 Feb 2025
Value US$128,215.03 | Price 42.88 | Shares 2,990
Sale 30 Dec 2024
Value US$495,231.21 | Price 42.23 | Shares 11,727
Proposed sale 30 Dec 2024
Value US$495,264.00 | Price 42.23 | Shares 11,727
Sale 10 Dec 2024
Value US$413,650.00 | Price 50.00 | Shares 8,273
Proposed sale 10 Dec 2024
Value US$413,650.00 | Price 50.00 | Shares 8,273
Sale 10 Oct 2024
Value US$393,853.40 | Price 52.76 | Shares 7,465
Planned sale 3 Sep 2024
Value US$5,113.29 | Price 56.19 | Shares 91
Sale 3 Sep 2024
Value US$1,117,000.00 | Price 55.85 | Shares 20,000
Proposed sale 3 Sep 2024
Value US$1,117,096.00 | Price 55.85 | Shares 20,000
Sale 6 Aug 2024
Value US$1,003,400.00 | Price 50.17 | Shares 20,000
Proposed sale 6 Aug 2024
Value US$1,003,418.00 | Price 50.17 | Shares 20,000
Sale 2 Jul 2024
Value US$23,932.32 | Price 40.98 | Shares 584
Proposed sale 2 Jul 2024
Value US$23,932.32 | Price 40.98 | Shares 584
Proposed sale 12 Jun 2024
Value US$441,270.00 | Price 45.00 | Shares 9,806
Planned sale 12 Jun 2024
Value US$441,270.00 | Price 45.00 | Shares 9,806
Proposed sale 10 Jun 2024
Value US$71,390.70 | Price 41.10 | Shares 1,737
Sale 10 Jun 2024
Value US$71,390.70 | Price 41.10 | Shares 1,737
Sale 2 May 2024
Value US$15,455.64 | Price 43.66 | Shares 354
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-06-15 2026-06-15 S Sale
2.5
Sanders Corazon (Corsee) D.
Non-Executive Director
86,083 -30.7%
190.17
US$2,730,838 		86,083 -30.7% 190.17 US$2,730,838
2026-06-15 2026-06-15 S Sale
2.3
Parschauer Karah Herdman

EVP and Chief Legal Officer

Officer
3,774 -29.1%
153.08
US$1,927,161 		3,774 -29.1% 153.08 US$1,927,161
2026-06-15 2026-06-15 PrS Proposed sale
2.3
KARAH PARSCHAUER

Officer

Officer
59,990
296.64
US$1,392,595 		59,990 296.64 US$1,392,595
2026-06-15 2026-06-15 PrS Proposed sale
2.5
CORAZON D. SANDERS

Director

Non-Executive Director
1,000
25.05
US$100,000 		1,000 25.05 US$100,000
2026-06-01 2026-06-01 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
4,653 -4.2%
23.77
US$110,602 		4,653 -4.2% 23.77 US$110,602
2026-06-01 2026-06-01 PrS Proposed sale
3.8
HOWARD HORN

Officer

Officer
4,653
23.77
US$110,602 		4,653 23.77 US$110,602
2026-05-18 2026-05-18 S Sale
SULIMAN SHEHNAAZ
Non-Executive Director
5,740 -17.0%
25.12
US$144,189 		5,740 -17.0% 25.12 US$144,189
2026-05-18 2026-05-18 PrS Proposed sale
SHEHNAAZ SULIMAN

Director

Non-Executive Director
5,740
25.12
US$144,189 		5,740 25.12 US$144,189
2026-05-06 2026-05-05 PlS Planned sale
2.9
Crombez Eric

EVP and Chief Medical Officer

Officer
344 -0.3%
24.96
US$8,586 		344 -0.3% 24.96 US$8,586
2026-05-04 2026-05-01 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
4,683 -4.1%
24.90
US$116,607 		4,683 -4.1% 24.90 US$116,607
2026-05-01 2026-05-01 PrS Proposed sale
3.8
HOWARD HORN

Officer

Officer
4,683
24.90
US$116,607 		4,683 24.90 US$116,607
2026-04-02 2026-04-01 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
4,683 -5.5%
20.97
US$98,203 		4,683 -5.5% 20.97 US$98,203
2026-04-02 2026-04-01 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
4,683 -5.5%
20.97
US$98,203 		4,683 -5.5% 20.97 US$98,203
2026-04-01 2026-04-01 PrS Proposed sale
3.8
HOWARD HORN

Officer

Officer
4,683
20.97
US$98,203 		4,683 20.97 US$98,203
2026-03-10 2026-03-10 PrS Proposed sale
2.3
KARAH PARSCHAUER

Officer

Officer
3,508
22.67
US$79,526 		3,508 22.67 US$79,526
2026-03-10 2026-03-10 S Sale
2.3
Parschauer Karah Herdman

EVP and Chief Legal Officer

Officer
3,508 -5.0%
22.67
US$79,526 		3,508 -5.0% 22.67 US$79,526
2026-03-10 2026-03-06 S Sale
2.3
Parschauer Karah Herdman

EVP and Chief Legal Officer

Officer
6,018 -7.9%
21.40
US$128,785 		6,018 -7.9% 21.40 US$128,785
2026-03-06 2026-03-06 PrS Proposed sale
2.3
KARAH PARSCHAUER

Officer

Officer
6,018
21.40
US$128,775 		6,018 21.40 US$128,775
2026-03-03 2026-03-03 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
1,635 -1.9%
22.40
US$36,624 		1,635 -1.9% 22.40 US$36,624
2026-03-03 2026-03-03 PrS Proposed sale
3.8
HOWARD HORN

Officer

Officer
1,635
22.40
US$36,624 		1,635 22.40 US$36,624
2026-03-03 2026-03-02 PlS Planned sale
4.0
Pinion John Richard

See Remarks

Officer
10,029 -8.4%
22.80
US$228,661 		10,029 -8.4% 22.80 US$228,661
2026-03-03 2026-03-02 PlS Planned sale
3.5
Harris Erik

EVP & Chief Commercial Officer

Officer
10,539 -10.5%
22.80
US$240,289 		10,539 -10.5% 22.80 US$240,289
2026-03-03 2026-03-02 PlS Planned sale
3.0
KAKKIS EMIL D

President & CEO

Executive Director
54,404 -7.6%
22.80
US$1,240,411 		54,404 -7.6% 22.80 US$1,240,411
2026-03-03 2026-03-02 S Sale
3.9
Huizenga Theodore Alan

SVP, Chief Accounting Officer

Officer
1,632 -3.2%
22.80
US$37,210 		1,632 -3.2% 22.80 US$37,210
2026-03-03 2026-03-02 PlS Planned sale
2.3
Parschauer Karah Herdman

EVP and Chief Legal Officer

Officer
8,135 -9.6%
22.80
US$185,478 		8,135 -9.6% 22.80 US$185,478
2026-03-03 2026-03-02 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
3,119 -3.5%
22.54
US$70,302 		3,119 -3.5% 22.54 US$70,302
2026-03-03 2026-03-02 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
5,290 -5.6%
22.80
US$120,612 		5,290 -5.6% 22.80 US$120,612
2026-03-03 2026-03-02 PlS Planned sale
2.9
Crombez Eric

EVP and Chief Medical Officer

Officer
7,029 -8.4%
22.80
US$160,261 		7,029 -8.4% 22.80 US$160,261
2026-03-02 2026-03-02 PrS Proposed sale
3.8
HOWARD HORN

Officer

Officer
3,119
22.54
US$70,302 		3,119 22.54 US$70,302
2026-02-03 2026-02-02 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
3,061 -3.3%
23.56
US$72,117 		3,061 -3.3% 23.56 US$72,117
2026-02-02 2026-02-02 PrS Proposed sale
3.8
HOWARD HORN

Officer

Officer
3,061
23.56
US$72,117 		3,061 23.56 US$72,117
2026-01-05 2026-01-02 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
3,150 -3.3%
22.84
US$71,946 		3,150 -3.3% 22.84 US$71,946
2026-01-02 2026-01-02 PrS Proposed sale
3.8
HOWARD HORN

Officer

Officer
3,150
22.84
US$71,946 		3,150 22.84 US$71,946
2025-12-30 2025-12-29 PlS Planned sale
3.9
Huizenga Theodore Alan

SVP, Chief Accounting Officer

Officer
85 -0.2%
34.38
US$2,922 		85 -0.2% 34.38 US$2,922
2025-12-11 2025-12-10 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
3,081 -3.1%
36.38
US$112,087 		3,081 -3.1% 36.38 US$112,087
2025-12-10 2025-12-10 PrS Proposed sale
3.8
HOWARD HORN

Officer

Officer
3,081
36.38
US$112,087 		3,081 36.38 US$112,087
2025-10-14 2025-10-13 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
7,942 -7.5%
31.51
US$250,252 		7,942 -7.5% 31.51 US$250,252
2025-09-19 2025-09-18 S Sale
3.9
Huizenga Theodore Alan

SVP, Chief Accounting Officer

Officer
64 -0.1%
29.17
US$1,867 		64 -0.1% 29.17 US$1,867
2025-09-12 2025-09-12 PrS Proposed sale
2.3
KARAH PARSCHAUER

Officer

Officer
2,450
31.17
US$76,366 		2,450 31.17 US$76,366
2025-09-12 2025-09-12 PlS Planned sale
2.3
Parschauer Karah Herdman

EVP and Chief Legal Officer

Officer
2,450 -3.2%
31.17
US$76,366 		2,450 -3.2% 31.17 US$76,366
2025-09-08 2025-09-05 PlS Planned sale
3.9
Huizenga Theodore Alan

SVP, Chief Accounting Officer

Officer
84 -0.2%
31.39
US$2,637 		84 -0.2% 31.39 US$2,637
2025-06-23 2025-06-20 S Sale
2.5
Sanders Corazon (Corsee) D.
Non-Executive Director
2,405 -13.6%
37.39
US$89,923 		2,405 -13.6% 37.39 US$89,923
2025-06-20 2025-06-20 PrS Proposed sale
2.5
CORAZON D. SANDERS

Director

Non-Executive Director
2,405
37.39
US$89,923 		2,405 37.39 US$89,923
2025-05-05 2025-05-05 PlS Planned sale
2.9
Crombez Eric

EVP and Chief Medical Officer

Officer
520 -0.7%
39.24
US$20,405 		520 -0.7% 39.24 US$20,405
2025-05-05 2025-04-21 S Sale
2.9
Crombez Eric

EVP and Chief Medical Officer

Officer
242 -0.3%
35.11
US$8,497 		242 -0.3% 35.11 US$8,497
2025-03-10 2025-03-06 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
1,785 -1.7%
40.40
US$72,114 		1,785 -1.7% 40.40 US$72,114
2025-03-04 2025-03-03 S Sale
2.5
Kassberg Thomas Richard

CBO & EVP

Officer
6,028 -2.2%
42.10
US$253,779 		6,028 -2.2% 42.10 US$253,779
2025-03-04 2025-03-03 PlS Planned sale
2.9
Crombez Eric

EVP and Chief Medical Officer

Officer
8,945 -11.1%
42.10
US$376,584 		8,945 -11.1% 42.10 US$376,584
2025-03-04 2025-03-03 S Sale
3.0
KAKKIS EMIL D

President & CEO

Executive Director
73,434 -10.3%
42.10
US$3,091,571 		73,434 -10.3% 42.10 US$3,091,571
2025-03-04 2025-03-03 S Sale
4.0
Pinion John Richard

See Remarks

Officer
14,439 -11.8%
42.10
US$607,882 		14,439 -11.8% 42.10 US$607,882
2025-03-04 2025-03-03 S Sale
2.3
Parschauer Karah Herdman

EVP and Chief Legal Officer

Officer
12,846 -14.6%
42.10
US$540,817 		12,846 -14.6% 42.10 US$540,817
2025-03-04 2025-03-03 PlS Planned sale
3.5
Harris Erik

EVP & Chief Commercial Officer

Officer
15,103 -14.7%
42.10
US$635,836 		15,103 -14.7% 42.10 US$635,836
2025-03-04 2025-03-03 S Sale
3.9
Huizenga Theodore Alan

SVP, Chief Accounting Officer

Officer
967 -1.9%
42.10
US$40,711 		967 -1.9% 42.10 US$40,711
2025-03-04 2025-02-28 S Sale
3.0
KAKKIS EMIL D

President & CEO

Executive Director
25,000 -1.1%
42.48
US$1,062,000 		25,000 -1.1% 42.48 US$1,062,000
2025-02-28 2025-02-28 PrS Proposed sale
3.0
KAKKIS EMIL D

Officer

Officer
25,000
42.48
US$1,062,100 		25,000 42.48 US$1,062,100
2025-03-03 2025-02-27 S Sale
2.3
Parschauer Karah Herdman

EVP and Chief Legal Officer

Officer
760 -1.4%
42.75
US$32,490 		760 -1.4% 42.75 US$32,490
2025-03-03 2025-02-27 S Sale
2.3
Parschauer Karah Herdman

EVP and Chief Legal Officer

Officer
2,230 -3.8%
42.93
US$95,734 		2,230 -3.8% 42.93 US$95,734
2025-02-27 2025-02-27 PrS Proposed sale
2.3
Parschauer Karah Herdman

Officer

Officer
2,990
42.88
US$128,215 		2,990 42.88 US$128,215
2024-12-31 2024-12-30 S Sale
3.0
KAKKIS EMIL D

President & CEO

Executive Director
11,727 -0.5%
42.23
US$495,231 		11,727 -0.5% 42.23 US$495,231
2024-12-30 2024-12-30 PrS Proposed sale
3.0
KAKKIS EMIL D

Officer

Officer
11,727
42.23
US$495,264 		11,727 42.23 US$495,264
2024-12-11 2024-12-10 S Sale
3.0
KAKKIS EMIL D

President & CEO

Executive Director
8,273 -0.4%
50.00
US$413,650 		8,273 -0.4% 50.00 US$413,650
2024-12-10 2024-12-10 PrS Proposed sale
3.0
KAKKIS EMIL D

Officer

Officer
8,273
50.00
US$413,650 		8,273 50.00 US$413,650
2024-10-11 2024-10-10 S Sale
3.8
Horn Howard

Chief Financial Officer

Officer
7,465 -7.5%
52.76
US$393,853 		7,465 -7.5% 52.76 US$393,853
2024-09-05 2024-09-03 PlS Planned sale
3.9
Huizenga Theodore Alan

SVP, Chief Accounting Officer

Officer
91 -0.2%
56.19
US$5,113 		91 -0.2% 56.19 US$5,113
2024-09-05 2024-09-03 S Sale
3.0
KAKKIS EMIL D

President & CEO

Executive Director
20,000 -0.9%
55.85
US$1,117,000 		20,000 -0.9% 55.85 US$1,117,000
2024-09-03 2024-09-03 PrS Proposed sale
3.0
KAKKIS EMIL D

Officer

Officer
20,000
55.85
US$1,117,096 		20,000 55.85 US$1,117,096
2024-08-07 2024-08-06 S Sale
3.0
KAKKIS EMIL D

President & CEO

Executive Director
20,000 -0.9%
50.17
US$1,003,400 		20,000 -0.9% 50.17 US$1,003,400
2024-08-06 2024-08-06 PrS Proposed sale
3.0
KAKKIS EMIL D

Officer

Officer
20,000
50.17
US$1,003,418 		20,000 50.17 US$1,003,418
2024-07-03 2024-07-02 S Sale
2.5
Sanders Corazon (Corsee) D.
Non-Executive Director
584 -4.6%
40.98
US$23,932 		584 -4.6% 40.98 US$23,932
2024-07-02 2024-07-02 PrS Proposed sale
2.5
CORAZON D. SANDERS

Director

Non-Executive Director
584
40.98
US$23,932 		584 40.98 US$23,932
2024-06-12 2024-06-12 PrS Proposed sale
2.3
KARAH PARSCHAUER

Officer

Officer
9,806
45.00
US$441,270 		9,806 45.00 US$441,270
2024-06-12 2024-06-12 PlS Planned sale
2.3
Parschauer Karah Herdman

EVP and Chief Legal Officer

Officer
9,806 -14.5%
45.00
US$441,270 		9,806 -14.5% 45.00 US$441,270
2024-06-10 2024-06-10 PrS Proposed sale
2.5
CORAZON D. SANDERS

Director

Non-Executive Director
1,737
41.10
US$71,391 		1,737 41.10 US$71,391
2024-06-10 2024-06-10 S Sale
2.5
Sanders Corazon (Corsee) D.
Non-Executive Director
1,737 -19.3%
41.10
US$71,391 		1,737 -19.3% 41.10 US$71,391
2024-05-03 2024-05-02 S Sale
2.9
Crombez Eric

EVP and Chief Medical Officer

Officer
354 -0.7%
43.66
US$15,456 		354 -0.7% 43.66 US$15,456
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