Stocks
RARE Ultragenyx Pharmaceutical Inc.

RARE

Ultragenyx Pharmaceutical Inc.

Company with tickers: RARE

CIK

1515673

CUSIP

90400D108

Shares Outstanding

98,317,221

Price Holdings Short Volume Short Interest Fails to Deliver SEC Filings Earnings Calls Insider Trading Congress Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2026-04-01	Horn Howard	Chief Financial Officer	Sell	4,683	$20.97	$98,203	80,351
2026-03-10	Parschauer Karah Herdman	Director	Sell	3,508	$22.67	$79,526	66,820
2026-03-06	Parschauer Karah Herdman	Director	Sell	6,018	$21.40	$128,785	70,328
2026-03-03	Horn Howard	Chief Financial Officer	Sell	1,635	$22.40	$36,624	85,034
2026-03-02	Pinion John Richard	See Remarks	Sell	10,029	$22.80	$228,661	110,026
2026-03-02	KAKKIS EMIL D	Director, President & CEO	Sell	54,404	$22.80	$1,240,411	658,994
2026-03-02	Parschauer Karah Herdman	Director	Sell	8,135	$22.80	$185,478	76,346
2026-03-02	Horn Howard	Chief Financial Officer	Sell	5,290	$22.80	$120,612	89,788
2026-03-02	Crombez Eric	Director	Sell	7,029	$22.80	$160,261	76,301
2026-03-02	Harris Erik	Director	Sell	10,539	$22.80	$240,289	89,515
2026-03-02	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Tax	148	$23.39	$3,462	50,302
2026-03-02	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Sell	1,632	$22.80	$37,210	48,670
2026-03-02	Huang Dennis Karl	See Remarks	Tax	999	$23.39	$23,367	124,729
2026-03-01	Pinion John Richard	See Remarks	Award	11,137	—	—	119,565
2026-03-01	KAKKIS EMIL D	Director, President & CEO	Other	2,158,985	—	—	2,158,985
2026-03-01	KAKKIS EMIL D	Director, President & CEO	Award	71,177	—	—	712,908
2026-03-01	Parschauer Karah Herdman	Director	Award	11,137	—	—	84,408
2026-03-01	Horn Howard	Chief Financial Officer	Award	6,143	—	—	95,078
2026-03-01	Crombez Eric	Director	Award	11,643	—	—	83,173
2026-03-01	Harris Erik	Director	Award	11,643	—	—	99,498
2026-03-01	Huang Dennis Karl	See Remarks	Award	11,137	—	—	125,728
2026-02-02	Horn Howard	Chief Financial Officer	Sell	3,061	$23.56	$72,117	88,935
2026-01-02	Horn Howard	Chief Financial Officer	Sell	3,150	$22.84	$71,946	91,996
2025-12-29	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Sell	85	$34.38	$2,922	50,450
2025-12-10	Horn Howard	Chief Financial Officer	Sell	3,081	$36.38	$112,087	95,146
2025-10-13	Horn Howard	Chief Financial Officer	Sell	7,942	$31.51	$250,252	98,227
2025-09-18	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Sell	64	$29.17	$1,867	50,242
2025-09-12	Parschauer Karah Herdman	Director	Sell	2,450	$31.17	$76,367	73,271
2025-09-05	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Sell	84	$31.39	$2,637	50,306
2025-06-20	Sanders Corazon (Corsee) D.	Director	Sell	2,405	$37.39	$89,923	15,344
2025-05-15	WELCH DANIEL G	Director	Award	5,740	—	—	32,690
2025-05-15	SULIMAN SHEHNAAZ	Director	Award	5,740	—	—	25,940
2025-05-15	SULIMAN SHEHNAAZ	Director	Award	10,787	—	—	10,787
2025-05-15	NARACHI MICHAEL	Director	Award	10,787	—	—	10,787
2025-05-15	NARACHI MICHAEL	Director	Award	5,740	—	—	32,690
2025-05-15	Fust Matthew K	Director	Award	10,787	—	—	10,787
2025-05-15	Fust Matthew K	Director	Award	5,740	—	—	25,945
2025-05-15	Ray Amrit	Director	Award	5,740	—	—	23,365
2025-05-15	Ray Amrit	Director	Award	10,787	—	—	10,787
2025-05-15	WELCH DANIEL G	Director	Award	10,787	—	—	10,787
2025-05-15	Sanders Corazon (Corsee) D.	Director	Award	5,740	—	—	17,749
2025-05-15	Sanders Corazon (Corsee) D.	Director	Award	10,787	—	—	10,787
2025-05-15	Dunsire Deborah	Director	Award	5,740	—	—	30,815
2025-05-15	Dunsire Deborah	Director	Award	10,787	—	—	10,787
2025-05-05	Crombez Eric	Director	Sell	520	$39.24	$20,405	71,530
2025-04-21	Crombez Eric	Director	Sell	242	$35.11	$8,497	71,680
2025-03-06	Horn Howard	Chief Financial Officer	Sell	1,785	$40.40	$72,114	106,169
2025-03-03	KAKKIS EMIL D	Director, President & CEO	Sell	73,434	$42.10	$3,091,571	641,731
2025-03-03	Harris Erik	Director	Sell	15,103	$42.10	$635,836	87,855
2025-03-03	Kassberg Thomas Richard	Director	Sell	6,028	$42.10	$253,779	265,238
2025-03-03	Kassberg Thomas Richard	Director	Tax	508	$42.92	$21,803	264,730
2025-03-03	Parschauer Karah Herdman	Director	Sell	12,846	$42.10	$540,817	75,287
2025-03-03	Crombez Eric	Director	Sell	8,945	$42.10	$376,585	71,922
2025-03-03	Pinion John Richard	See Remarks	Sell	14,439	$42.10	$607,882	107,766
2025-03-03	Pinion John Richard	See Remarks	Tax	31	$42.92	$1,331	108,428
2025-03-03	Huang Dennis Karl	See Remarks	Tax	1,348	$42.92	$57,856	114,591
2025-03-03	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Sell	967	$42.10	$40,711	50,265
2025-03-03	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Tax	141	$42.92	$6,052	50,124
2025-03-01	KAKKIS EMIL D	Director, President & CEO	Award	43,268	—	—	607,873
2025-03-01	KAKKIS EMIL D	Director, President & CEO	Award	78,448	—	—	78,448
2025-03-01	Harris Erik	Director	Award	30,246	—	—	30,246
2025-03-01	Harris Erik	Director	Award	16,813	—	—	83,976
2025-03-01	Kassberg Thomas Richard	Director	Award	18,443	—	—	271,266
2025-03-01	Parschauer Karah Herdman	Director	Award	18,443	—	—	88,133
2025-03-01	Crombez Eric	Director	Award	16,813	—	—	65,244
2025-03-01	Crombez Eric	Director	Award	30,246	—	—	30,246
2025-03-01	Pinion John Richard	See Remarks	Award	26,074	—	—	26,074
2025-03-01	Pinion John Richard	See Remarks	Award	14,494	—	—	103,762
2025-03-01	Huang Dennis Karl	See Remarks	Award	14,494	—	—	97,496
2025-03-01	Huang Dennis Karl	See Remarks	Award	26,074	—	—	26,074
2025-03-01	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Award	5,632	—	—	5,632
2025-03-01	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Award	9,392	—	—	51,232
2025-03-01	Horn Howard	Chief Financial Officer	Award	28,160	—	—	28,160
2025-03-01	Horn Howard	Chief Financial Officer	Award	15,653	—	—	107,954
2025-03-01	Parschauer Karah Herdman	Director	Award	26,074	—	—	26,074
2025-03-01	Parschauer Karah Herdman	Director	Award	14,494	—	—	69,690
2025-02-28	KAKKIS EMIL D	Director, President & CEO	Sell	25,000	$42.48	$1,062,000	2,158,985
2025-02-27	Parschauer Karah Herdman	Director	Sell	2,230	$42.93	$95,734	55,751
2024-12-30	KAKKIS EMIL D	Director, President & CEO	Other	564,605	—	—	564,605
2024-12-30	KAKKIS EMIL D	Director, President & CEO	Sell	11,727	$42.23	$495,231	2,183,985
2024-12-10	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Gift	648	—	—	41,840
2024-12-10	KAKKIS EMIL D	Director, President & CEO	Sell	8,273	$50.00	$413,650	2,195,712
2024-12-09	KAKKIS EMIL D	Director, President & CEO	Other	564,605	—	—	564,605
2024-12-09	KAKKIS EMIL D	Director, President & CEO	Gift	20,000	—	—	2,203,985
2024-10-10	Horn Howard	Chief Financial Officer	Sell	7,465	$52.76	$393,853	92,301
2024-09-16	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Award	700	—	—	42,251
2024-09-03	KAKKIS EMIL D	Director, President & CEO	Other	564,597	—	—	564,597
2024-09-03	KAKKIS EMIL D	Director, President & CEO	Sell	20,000	$55.85	$1,117,000	2,223,985
2024-09-03	Huizenga Theodore Alan	SVP, Chief Accounting Officer	Sell	91	$56.19	$5,113	41,551
2024-08-06	KAKKIS EMIL D	Director, President & CEO	Other	564,597	—	—	564,597
2024-08-06	KAKKIS EMIL D	Director, President & CEO	Sell	20,000	$50.17	$1,003,400	2,243,985
2024-07-02	Sanders Corazon (Corsee) D.	Director	Sell	584	$40.98	$23,932	12,009
2024-06-18	Dunsire Deborah	Director	Award	5,345	—	—	25,075
2024-06-18	Dunsire Deborah	Director	Award	9,900	—	—	9,900
2024-06-18	Ray Amrit	Director	Award	9,900	—	—	9,900
2024-06-18	Ray Amrit	Director	Award	5,345	—	—	17,625
2024-06-18	Sanders Corazon (Corsee) D.	Director	Award	5,345	—	—	12,593
2024-06-18	Sanders Corazon (Corsee) D.	Director	Award	9,900	—	—	9,900
2024-06-18	Fust Matthew K	Director	Award	9,900	—	—	9,900
2024-06-18	Fust Matthew K	Director	Award	5,345	—	—	20,205