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Who

Howard Horn

Chief Financial Officer

Company insider

Files Form 4 as: Chief Financial Officer, Ultragenyx Pharmaceutical; CFO, Vir Biotechnology.

In numbers

Trades disclosed
55
Buys
0
Sells
23
Bought
$0
Sold
$7.6M
Companies
2
Companies where not an officer
0
First trade
10 Oct 2019
Last trade
15 Oct 2026
Last filed
19 Oct 2026

Companies traded

Where they are an officer
RARE Ultragenyx PharmaceuticalOfficer · Biotechnology · last 15 Oct 20260 buys · 14 sells
VIR Vir BiotechnologyOfficer · Biotechnology · last 23 Feb 20230 buys · 9 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
30Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
15 Oct 2026filed 19 Oct 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$108K7,066 at $15.27filing
3 Aug 2026filed 4 Aug 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$117K4,696 at $24.92filing
3 Aug 2026filed 4 Aug 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$117K4,696 at $24.92filing
1 Jul 2026filed 6 Jul 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$156K4,698 at $33.13filing
1 Jul 2026filed 6 Jul 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$156K4,698 at $33.13filing
1 Jun 2026filed 1 Jun 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$111K4,653 at $23.77filing
1 Jun 2026filed 1 Jun 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$111K4,653 at $23.77filing
1 May 2026filed 4 May 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$117K4,683 at $24.90filing
1 May 2026filed 4 May 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$117K4,683 at $24.90filing
16 Apr 2026filed 20 Apr 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Code A—34,674 at $0.00filing
16 Apr 2026filed 20 Apr 2026RARE Ultragenyx Pharmaceuticaloption or derivative · BiotechnologySEC FORM 4 Code A—59,952 at $0.00filing
16 Apr 2026filed 20 Apr 2026RARE Ultragenyx Pharmaceuticaloption or derivative · BiotechnologySEC FORM 4 Code A—59,952 at $0.00filing
16 Apr 2026filed 20 Apr 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Code A—34,674 at $0.00filing
1 Apr 2026filed 2 Apr 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$98K4,683 at $20.97filing
1 Apr 2026filed 2 Apr 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$98K4,683 at $20.97filing
3 Mar 2026filed 3 Mar 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$37K1,635 at $22.40filing
3 Mar 2026filed 3 Mar 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$37K1,635 at $22.40filing
2 Mar 2026filed 3 Mar 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$121K5,290 at $22.80filing
2 Mar 2026filed 3 Mar 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$70K3,119 at $22.54filing
2 Mar 2026filed 3 Mar 2026RARE Ultragenyx PharmaceuticalBiotechnologySEC FORM 4 Sold$121K5,290 at $22.80filing

News

Sectors

Health Care23

Buys in green, sells in red, by the company’s sector.

Related people

Theodore Alan HuizengaSVP, Chief Accounting Officer · SVP, Chief Accounting Officer at Ultragenyx Pharmaceutical, filing Form 4 there in the last year
Robert J. MoreDirector · Director at Vir Biotechnology, filing Form 4 there in the last year
Karah Herdman ParschauerEVP and Chief Legal Officer · EVP and Chief Legal Officer at Ultragenyx Pharmaceutical, filing Form 4 there in the last year
Corazon (Corsee) D. SandersDirector · Director at Ultragenyx Pharmaceutical, filing Form 4 there in the last year
Timothy CoughlinDirector · Director at Vir Biotechnology, filing Form 4 there in the last year
Gilbert Ray Cisneros, Jr.Representative, CA-31 · Also traded RARE in the last 90 days