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Ultragenyx Pharmaceutical Inc.

RARE Net selling
CIK 0001515673 #1874 in the set updated 17 Sep 2026
Bought (120 mo)
$612.07K
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$92.57M
$9.77M on a plan · $32.95M straight out of an exercise
Sold at will
$49.86M
152 of 239 sales
Net
−$91.96M
−$49.24M against sales at will

By person

24 insiders · 254 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
KAKKIS EMIL D
President & CEO
$612.07K (3)
$36.98M (26)
−$36.37M
7,444,206
$101.02M
+1.5%
Sharp Shalini
EVP, Finance
$11.97M (25) scheduled
−$11.97M
97,812
$1.33M
+106.5%
Parschauer Karah Herdman
EVP and Chief Legal Officer
$10.02M (35) scheduled
−$10.02M
92,562
$1.26M
+498.4%
Bedrosian Camille L
EVP and Chief Medical Officer
$6.04M (12) scheduled
−$6.04M
46,720
$633.99K
Aliski William
Director
$5.45M (11)
−$5.45M
185,655
$2.52M
−9.4%
Kassberg Thomas Richard
CBO & EVP
$3.85M (11)
−$3.85M
264,730
$3.59M
+209.2%
SIEGALL CLAY B
Director
$2.97M (3) scheduled
−$2.97M
2,550
$34.60K
+36.0%
Pinion John Richard
See Remarks
$2.84M (11)
−$2.84M
133,142
$1.81M
+1,643%
Huizenga Theodore Alan
SVP, Chief Accounting Officer
$2.80M (37) scheduled
−$2.80M
67,863
$920.90K
+288.1%
Harris Erik
EVP & Chief Commercial Officer
$2.66M (19)
−$2.66M
118,410
$1.61M
+902.3%
Fust Matthew K
Director
$2.32M (8) scheduled
−$2.32M
33,696
$457.25K
+155.4%
Horn Howard
Chief Financial Officer
$1.80M (14) scheduled
−$1.80M
96,295
$1.31M
Huang Dennis Karl
See Remarks
$914.53K (6)
−$914.53K
147,845
$2.01M
+1,181%
Dier Mardi
CFO & Executive Vice President
$813.79K (6)
−$813.79K
66,695
$905.05K
Crombez Eric
EVP and Chief Medical Officer
$662.61K (8)
−$662.61K
111,189
$1.51M
+299.3%
Sanders Corazon (Corsee) D.
Director
$339.40K (6) scheduled
−$339.40K
21,095
$286.26K
SULIMAN SHEHNAAZ
Director
$144.19K (1) scheduled
−$144.19K
27,951
$379.30K
WELCH DANIEL G
Director
40,441
$548.78K
+2,057%
NARACHI MICHAEL
Director
40,441
$548.78K
+2,057%
Dunsire Deborah
Director
38,566
$523.34K
Ray Amrit
Director
31,116
$422.24K
Dallas Jayson Donald Alexander
EVP & Chief Commercial Officer
23,830
$323.37K
+77.9%
Hogenhuis Wladimir
Chief Operating Officer
18,703
$253.80K
Ekman Lars
Director
17,745
$240.80K
+846.4%

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Insider
Date
Role
Action
Shares
Price
Amount
Huizenga Theodore Alan
3 Sep 2026
SVP, Chief Accounting Officer
Sell
161
$13.99
$2.25K
Sanders Corazon (Corsee) D.
15 Jun 2026
Director
Sell
2,000
$25.05
$50.10K
Crombez Eric
5 May 2026
EVP and Chief Medical Officer
Sell
344
$24.96
$8.59K
Parschauer Karah Herdman
10 Mar 2026
EVP and Chief Legal Officer
Sell
3,508
$22.67
$79.53K
Parschauer Karah Herdman
6 Mar 2026
EVP and Chief Legal Officer
Sell
6,018
$21.40
$128.79K
Crombez Eric
2 Mar 2026
EVP and Chief Medical Officer
Sell
7,029
$22.80
$160.26K
Huizenga Theodore Alan
2 Mar 2026
SVP, Chief Accounting Officer
Sell
1,632
$22.80
$37.21K
Parschauer Karah Herdman
2 Mar 2026
EVP and Chief Legal Officer
Sell
8,135
$22.80
$185.48K
KAKKIS EMIL D
2 Mar 2026
President & CEO
Sell
54,404
$22.80
$1.24M
Harris Erik
2 Mar 2026
EVP & Chief Commercial Officer
Sell
10,539
$22.80
$240.29K
Pinion John Richard
2 Mar 2026
See Remarks
Sell
10,029
$22.80
$228.66K
Huizenga Theodore Alan
29 Dec 2025
SVP, Chief Accounting Officer
Sell
85
$34.38
$2.92K
Horn Howard
13 Oct 2025
Chief Financial Officer
Sell
7,942
$31.51
$250.25K
Huizenga Theodore Alan
18 Sep 2025
SVP, Chief Accounting Officer
Sell
64
$29.17
$1.87K
Parschauer Karah Herdman
12 Sep 2025
EVP and Chief Legal Officer
Sell
2,450
$31.17
$76.37K
Huizenga Theodore Alan
5 Sep 2025
SVP, Chief Accounting Officer
Sell
84
$31.39
$2.64K
Crombez Eric
5 May 2025
EVP and Chief Medical Officer
Sell
520
$39.24
$20.40K
Crombez Eric
21 Apr 2025
EVP and Chief Medical Officer
Sell
242
$35.11
$8.50K
Horn Howard
6 Mar 2025
Chief Financial Officer
Sell
1,785
$40.40
$72.11K
Huizenga Theodore Alan
3 Mar 2025
SVP, Chief Accounting Officer
Sell
967
$42.10
$40.71K
Harris Erik
3 Mar 2025
EVP & Chief Commercial Officer
Sell
15,103
$42.10
$635.84K
Pinion John Richard
3 Mar 2025
See Remarks
Sell
14,439
$42.10
$607.88K
Crombez Eric
3 Mar 2025
EVP and Chief Medical Officer
Sell
8,945
$42.10
$376.58K
Parschauer Karah Herdman
3 Mar 2025
EVP and Chief Legal Officer
Sell
12,846
$42.10
$540.82K
Kassberg Thomas Richard
3 Mar 2025
CBO & EVP
Sell
6,028
$42.10
$253.78K
Parschauer Karah Herdman
27 Feb 2025
EVP and Chief Legal Officer
Sell
760
$42.75
$32.49K
Parschauer Karah Herdman
27 Feb 2025
EVP and Chief Legal Officer
Sell
2,230
$42.93
$95.73K
Horn Howard
10 Oct 2024
Chief Financial Officer
Sell
7,465
$52.76
$393.85K
Huizenga Theodore Alan
3 Sep 2024
SVP, Chief Accounting Officer
Sell
91
$56.19
$5.11K
Crombez Eric
2 May 2024
EVP and Chief Medical Officer
Sell
354
$43.66
$15.46K
Crombez Eric
18 Apr 2024
EVP and Chief Medical Officer
Sell
142
$44.10
$6.26K
Kassberg Thomas Richard
11 Mar 2024
CBO & EVP
Sell
11,509
$49.93
$574.64K
Harris Erik
1 Mar 2024
EVP & Chief Commercial Officer
Sell
4,768
$53.76
$256.33K
Crombez Eric
1 Mar 2024
EVP and Chief Medical Officer
Sell
1,238
$53.76
$66.55K
Huizenga Theodore Alan
1 Mar 2024
SVP, Chief Accounting Officer
Sell
341
$53.76
$18.33K
Pinion John Richard
1 Mar 2024
See Remarks
Sell
4,173
$53.76
$224.34K
Kassberg Thomas Richard
1 Mar 2024
CBO & EVP
Sell
1,011
$53.76
$54.35K
Parschauer Karah Herdman
1 Mar 2024
EVP and Chief Legal Officer
Sell
3,756
$53.76
$201.92K
KAKKIS EMIL D
7 Feb 2024
President & CEO
Sell
30,000
$45.00
$1.35M
KAKKIS EMIL D
29 Dec 2023
President & CEO
Sell
30,000
$47.87
$1.44M
Harris Erik
5 Sep 2023
EVP & Chief Commercial Officer
Sell
6,000
$37.96
$227.76K
Huizenga Theodore Alan
1 Sep 2023
SVP, Chief Accounting Officer
Sell
87
$38.23
$3.33K
Huizenga Theodore Alan
1 Sep 2023
SVP, Chief Accounting Officer
Sell
883
$37.04
$32.71K
Sanders Corazon (Corsee) D.
30 Jun 2023
Director
Sell
585
$46.76
$27.35K
Harris Erik
19 Jun 2023
EVP & Chief Commercial Officer
Sell
305
$48.20
$14.70K
Sanders Corazon (Corsee) D.
8 Jun 2023
Director
Sell
1,485
$51.65
$76.70K
Pinion John Richard
18 May 2023
See Remarks
Sell
2,012
$50.00
$100.60K
Parschauer Karah Herdman
4 May 2023
EVP and Chief Legal Officer
Sell
4,378
$45.00
$197.01K
Harris Erik
1 Mar 2023
EVP & Chief Commercial Officer
Sell
3,664
$45.25
$165.80K
Pinion John Richard
1 Mar 2023
See Remarks
Sell
3,755
$45.26
$169.95K
Huang Dennis Karl
1 Mar 2023
See Remarks
Sell
389
$45.65
$17.76K
Huizenga Theodore Alan
1 Mar 2023
SVP, Chief Accounting Officer
Sell
100
$45.65
$4.57K
Kassberg Thomas Richard
1 Mar 2023
CBO & EVP
Sell
1,968
$45.27
$89.09K
Parschauer Karah Herdman
1 Mar 2023
EVP and Chief Legal Officer
Sell
3,161
$45.25
$143.04K
Bedrosian Camille L
1 Mar 2023
EVP and Chief Medical Officer
Sell
3,881
$45.25
$175.62K
Huizenga Theodore Alan
28 Feb 2023
SVP, Chief Accounting Officer
Sell
639
$43.40
$27.73K
KAKKIS EMIL D
30 Dec 2022
President & CEO
Sell
19,582
$45.57
$892.35K
Huizenga Theodore Alan
21 Dec 2022
SVP, Chief Accounting Officer
Sell
2,031
$43.96
$89.28K
Dier Mardi
14 Oct 2022
CFO & Executive Vice President
Sell
1,629
$40.16
$65.42K
Dier Mardi
12 Oct 2022
CFO & Executive Vice President
Sell
3,484
$38.22
$133.16K
Harris Erik
19 Jun 2022
EVP & Chief Commercial Officer
Sell
295
$54.78
$16.16K
Huizenga Theodore Alan
16 Apr 2022
SVP, Chief Accounting Officer
Sell
132
$84.55
$11.16K
Kassberg Thomas Richard
11 Mar 2022
CBO & EVP
Sell
10,281
$67.01
$688.93K
Parschauer Karah Herdman
7 Mar 2022
EVP and Chief Legal Officer
Sell
5,140
$62.95
$323.56K
Dier Mardi
3 Mar 2022
CFO & Executive Vice President
Sell
420
$64.55
$27.11K
Bedrosian Camille L
1 Mar 2022
EVP and Chief Medical Officer
Sell
2,821
$66.62
$187.94K
Kassberg Thomas Richard
1 Mar 2022
CBO & EVP
Sell
2,374
$66.62
$158.16K
Parschauer Karah Herdman
1 Mar 2022
EVP and Chief Legal Officer
Sell
2,886
$66.62
$192.27K
Huang Dennis Karl
1 Mar 2022
See Remarks
Sell
3,234
$66.62
$215.45K
Huizenga Theodore Alan
1 Mar 2022
SVP, Chief Accounting Officer
Sell
843
$66.62
$56.16K
Pinion John Richard
1 Mar 2022
See Remarks
Sell
4,498
$66.62
$299.66K
Harris Erik
1 Mar 2022
EVP & Chief Commercial Officer
Sell
2,713
$66.62
$180.74K
Dier Mardi
1 Mar 2022
CFO & Executive Vice President
Sell
534
$66.62
$35.58K
Bedrosian Camille L
30 Jan 2022
EVP and Chief Medical Officer
Sell
1,657
$66.30
$109.86K
Dier Mardi
14 Oct 2021
CFO & Executive Vice President
Sell
3,261
$81.16
$264.66K
Pinion John Richard
14 Oct 2021
See Remarks
Sell
358
$81.14
$29.05K
Parschauer Karah Herdman
14 Oct 2021
EVP and General Counsel
Sell
310
$81.14
$25.15K
Kassberg Thomas Richard
14 Oct 2021
CBO & EVP
Sell
286
$81.14
$23.21K
Huizenga Theodore Alan
14 Oct 2021
SVP, Chief Accounting Officer
Sell
140
$81.14
$11.36K
Huang Dennis Karl
14 Oct 2021
EVP & Chief Tech Ops Officer
Sell
358
$81.14
$29.05K
Harris Erik
14 Oct 2021
EVP & Chief Commercial Officer
Sell
303
$81.14
$24.59K
Bedrosian Camille L
14 Oct 2021
EVP and Chief Medical Officer
Sell
359
$81.14
$29.13K
Dier Mardi
12 Oct 2021
CFO & Executive Vice President
Sell
3,477
$82.79
$287.86K
Harris Erik
6 Jul 2021
EVP & Chief Commercial Officer
Sell
375
$91.53
$34.32K
Harris Erik
21 Jun 2021
EVP & Chief Commercial Officer
Sell
572
$94.96
$54.32K
Harris Erik
19 Jun 2021
EVP & Chief Commercial Officer
Sell
437
$94.63
$41.35K
Parschauer Karah Herdman
10 Jun 2021
EVP and General Counsel
Sell
1,329
$100.00
$132.90K
Harris Erik
7 May 2021
EVP & Chief Commercial Officer
Sell
393
$113.67
$44.67K
Bedrosian Camille L
6 May 2021
EVP and Chief Medical Officer
Sell
364
$113.67
$41.38K
Harris Erik
6 May 2021
EVP & Chief Commercial Officer
Sell
307
$113.68
$34.90K
Kassberg Thomas Richard
6 May 2021
CBO & EVP
Sell
363
$113.69
$41.27K
Huizenga Theodore Alan
6 May 2021
SVP, Chief Accounting Officer
Sell
142
$113.67
$16.14K
Pinion John Richard
6 May 2021
See Remarks
Sell
363
$113.69
$41.27K
Parschauer Karah Herdman
6 May 2021
EVP and General Counsel
Sell
313
$113.67
$35.58K
Huang Dennis Karl
6 May 2021
EVP & Chief Tech Ops Officer
Sell
363
$113.68
$41.27K
KAKKIS EMIL D
3 May 2021
President & CEO
Sell indirect
30,000
$107.80
$3.23M
Harris Erik
20 Apr 2021
EVP & Chief Commercial Officer
Sell
396
$104.28
$41.29K
Huizenga Theodore Alan
8 Mar 2021
SVP, Controller and PAO
Sell
3,000
$120.69
$362.07K
Harris Erik
2 Mar 2021
EVP & Chief Commercial Officer
Sell
707
$138.16
$97.68K
KAKKIS EMIL D
1 Mar 2021
President & CEO
Sell indirect
30,000
$141.80
$4.25M
Bedrosian Camille L
1 Mar 2021
EVP and Chief Medical Officer
Sell
4,543
$138.18
$627.75K
Huang Dennis Karl
1 Mar 2021
EVP & Chief Tech Ops Officer
Sell
4,255
$138.18
$587.96K
Harris Erik
1 Mar 2021
EVP & Chief Commercial Officer
Sell
2,470
$138.17
$341.28K
Huizenga Theodore Alan
1 Mar 2021
SVP, Controller and PAO
Sell
732
$138.17
$101.14K
Parschauer Karah Herdman
1 Mar 2021
EVP and General Counsel
Sell
3,970
$138.17
$548.53K
Pinion John Richard
1 Mar 2021
See Remarks
Sell
6,198
$138.17
$856.38K
Kassberg Thomas Richard
1 Mar 2021
CBO & EVP
Sell
4,572
$138.17
$631.71K
Bedrosian Camille L
30 Jan 2021
EVP and Chief Medical Officer
Sell
2,243
$140.36
$314.83K
KAKKIS EMIL D
4 Jan 2021
President & CEO
Sell indirect
30,000
$136.90
$4.11M
KAKKIS EMIL D
2 Nov 2020
President & CEO
Sell indirect
30,000
$96.82
$2.90M
Sharp Shalini
14 Oct 2020
EVP, Finance
Sell
375
$87.99
$33.00K
Huizenga Theodore Alan
14 Oct 2020
SVP, Controller and PAO
Sell
146
$87.98
$12.85K
Huang Dennis Karl
14 Oct 2020
EVP & Chief Tech Ops Officer
Sell
262
$88.00
$23.06K
Pinion John Richard
14 Oct 2020
See Remarks
Sell
262
$88.00
$23.06K
Harris Erik
14 Oct 2020
EVP & Chief Commercial Officer
Sell
220
$88.00
$19.36K
Kassberg Thomas Richard
14 Oct 2020
CBO & EVP
Sell
262
$87.98
$23.05K
Parschauer Karah Herdman
14 Oct 2020
EVP and General Counsel
Sell
325
$88.00
$28.60K
Bedrosian Camille L
14 Oct 2020
EVP and Chief Medical Officer
Sell
262
$88.00
$23.06K
Pinion John Richard
12 Oct 2020
See Remarks
Sell
2,780
$94.47
$262.63K
KAKKIS EMIL D
1 Sep 2020
President & CEO
Sell indirect
30,000
$82.63
$2.48M
KAKKIS EMIL D
13 Jul 2020
President & CEO
Sell indirect
40,000
$85.35
$3.41M
Harris Erik
3 Jun 2020
EVP & Chief Commercial Officer
Sell
2,516
$74.69
$187.92K
Huizenga Theodore Alan
26 May 2020
SVP, Controller and PAO
Sell
260
$74.93
$19.48K
Parschauer Karah Herdman
18 May 2020
EVP and General Counsel
Sell
2,722
$74.72
$203.37K
Fust Matthew K
18 May 2020
Director
Sell
1,875
$75.00
$140.63K
Aliski William
18 May 2020
Director
Sell indirect
20,000
$74.02
$1.48M
Fust Matthew K
22 Apr 2020
Director
Sell
1,875
$65.00
$121.88K
Huizenga Theodore Alan
14 Jan 2020
SVP, Controller and PAO
Sell
1,000
$61.00
$61.00K
Parschauer Karah Herdman
24 Jun 2019
EVP and General Counsel
Sell
1,226
$61.50
$75.40K
Parschauer Karah Herdman
21 Jun 2019
EVP and General Counsel
Sell
1,489
$63.01
$93.82K
Parschauer Karah Herdman
29 Apr 2019
EVP and General Counsel
Sell
468
$68.30
$31.96K
Aliski William
7 Dec 2018
Director
Sell indirect
6,000
$49.69
$298.14K
Aliski William
8 Nov 2018
Director
Sell indirect
6,000
$55.67
$334.02K
Aliski William
8 Oct 2018
Director
Sell indirect
6,000
$73.38
$440.28K
Parschauer Karah Herdman
21 Aug 2018
EVP and General Counsel
Sell
5,000
$78.53
$392.65K
Aliski William
8 Aug 2018
Director
Sell
3,750
$76.66
$287.48K
Parschauer Karah Herdman
21 Jun 2018
EVP and General Counsel
Sell
1,226
$82.77
$101.48K
Huizenga Theodore Alan
13 Jun 2018
VP, Controller and PAO
Sell
1,338
$76.97
$102.99K
Fust Matthew K
30 May 2018
Director
Sell
6,319
$72.00
$454.97K
Parschauer Karah Herdman
10 May 2018
EVP and General Counsel
Sell
1,465
$60.00
$87.90K
Aliski William
19 Apr 2018
Director
Sell indirect
650
$53.97
$35.08K
Huizenga Theodore Alan
26 May 2017
VP, Controller and PAO
Sell
480
$57.46
$27.58K
Huizenga Theodore Alan
9 Mar 2017
Controller and PAO
Sell
2,500
$86.34
$215.85K
KAKKIS EMIL D
15 Nov 2016
President & CEO
Sell
200
$83.01
$16.60K
KAKKIS EMIL D
15 Nov 2016
President & CEO
Sell
4,180
$82.36
$344.26K
KAKKIS EMIL D
15 Nov 2016
President & CEO
Sell
7,755
$81.55
$632.42K
KAKKIS EMIL D
15 Nov 2016
President & CEO
Sell
6,451
$80.64
$520.21K
KAKKIS EMIL D
15 Nov 2016
President & CEO
Sell
1,414
$79.39
$112.26K
Showing 250 of 254 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 450
Amendments (4/A) skipped 11
Filings about a different issuer 3
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 28
Sales straight out of an exercise 59
Sales at will 152
Transactions with no price 0
Shares from compensation/vesting 3,115,818
Sales filed before the plan box existed 104
History held since 18 Oct 2016