SEC Insider Transactions from Horn Howard.

Last updated: 2026-04-02 23:06 UTC | Total transactions: 19

Horn Howard, CFO of Ultragenyx Pharmaceutical Inc. ($RARE), sold shares on the open market seven times over the past year, totaling about $734,000. His most recent sale occurred on March 3, 2026. These sales rank him 5,629th among 11,678 insiders in our database, where the average is $8.6 million across roughly 6.4 transactions per person. Howard made no open market purchases in this period.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
April 1, 2026 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer S Common Stock 4683 $20.97 80,351.0000 98,600,000 5.51% 0.00%
March 3, 2026 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer S Common Stock 1635 $22.40 85,034.0000 98,600,000 1.89% 0.00%
March 2, 2026 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer S Common Stock 3119 $22.54 86,669.0000 98,600,000 3.47% 0.00%
March 2, 2026 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer S Common Stock 5290 $22.80 89,788.0000 98,600,000 5.56% 0.01%
March 1, 2026 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer A Common Stock 6143 $0.00 95,078.0000 98,600,000 6.91% 0.01%
Feb. 2, 2026 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer S Common Stock 3061 $23.56 88,935.0000 98,600,000 3.33% 0.00%
Jan. 2, 2026 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer S Common Stock 3150 $22.84 91,996.0000 98,600,000 3.31% 0.00%
Dec. 10, 2025 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer S Common Stock 3081 $36.38 95,146.0000 99,771,297 3.14% 0.00%
Oct. 13, 2025 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer S Common Stock 7942 $31.51 98,227.0000 99,771,297 7.48% 0.01%
March 6, 2025 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer S Common Stock 1785 $40.40 106,169.0000 90,538,118 1.65% 0.00%
March 1, 2025 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer A Common Stock 15653 $0.00 107,954.0000 90,538,118 16.96% 0.02%
March 1, 2025 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer A Stock Option (Right to Buy) 28160 $0.00 28,160.0000 90,538,118 9999.99% 0.03%
Oct. 10, 2024 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer S Common Stock 7465 $52.76 92,301.0000 95,493,996 7.48% 0.01%
March 1, 2024 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer A Stock Option (Right to Buy) 34200 $0.00 34,200.0000 73,543,862 9999.99% 0.05%
March 1, 2024 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer A Common Stock 19400 $0.00 99,766.0000 73,543,862 24.14% 0.03%
Oct. 9, 2023 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer A Common Stock 80366 $0.00 80,336.0000 69,914,225 0.00% 0.11%
Oct. 9, 2023 Ultragenyx Pharmaceutical Inc. $RARE Horn Howard Chief Financial Officer A Stock Option (Right to Buy) 140469 $0.00 140,469.0000 69,914,225 9999.99% 0.20%
Feb. 23, 2023 Vir Biotechnology, Inc. $VIR Horn Howard CFO S Common Stock 2248 $25.97 230,712.0000 0 0.96% 0.00%
Feb. 17, 2023 Vir Biotechnology, Inc. $VIR Horn Howard CFO S Common Stock 2424 $25.29 232,960.0000 0 1.03% 0.00%