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Who

David C. Stump

Director

Company insider

Files Form 4 as: Director, Regenxbio; Director, MacroGenics; Director, Portola Pharmaceuticals; Director, Sunesis Pharmaceuticals; Director, Dendreon; Exec. Vice President, Human Genome Sciences.

Every Form 4 they filed

In numbers

Trades disclosed
122
Buys
0
Sells
3
Bought
$0
Sold
$3.8M
Companies
6
Companies where not an officer
5
First trade
14 Mar 2006
Last trade
29 May 2026
Last filed
2 Jun 2026

Companies traded

Where they are an officer
Human Genome SciencesOfficer · last 30 Jul 20120 buys · 3 sells
Everywhere else they filed: board seats, 10% stakes, other companies
RGNX RegenxbioDirector · Biotechnology · last 29 May 20260 buys · 0 sells
MGNX MacroGenicsDirector · Biotechnology · last 19 May 20260 buys · 0 sells
Portola PharmaceuticalsDirector · last 2 Jul 20200 buys · 0 sells
Sunesis PharmaceuticalsDirector · last 30 Jun 20200 buys · 0 sells
DendreonDirector · last 3 Jan 20140 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
29 May 2026filed 2 Jun 2026RGNX RegenxbioBiotechnologySEC FORM 4 Code A—9,807 at $0.00filing
29 May 2026filed 2 Jun 2026RGNX Regenxbiooption or derivative · BiotechnologySEC FORM 4 Code A—46,600 at $0.00filing
29 May 2026filed 2 Jun 2026RGNX Regenxbiooption or derivative · BiotechnologySEC FORM 4 Code A—46,600 at $0.00filing
29 May 2026filed 2 Jun 2026RGNX RegenxbioBiotechnologySEC FORM 4 Code A—9,807 at $0.00filing
19 May 2026filed 20 May 2026MGNX MacroGenicsoption or derivative · BiotechnologySEC FORM 4 Code A—3,750 at $0.00filing
19 May 2026filed 20 May 2026MGNX MacroGenicsoption or derivative · BiotechnologySEC FORM 4 Code A—3,750 at $0.00filing
19 May 2026filed 20 May 2026MGNX MacroGenicsoption or derivative · BiotechnologySEC FORM 4 Code A—22,000 at $0.00filing
19 May 2026filed 20 May 2026MGNX MacroGenicsoption or derivative · BiotechnologySEC FORM 4 Code A—22,000 at $0.00filing
18 May 2026filed 20 May 2026MGNX MacroGenicsBiotechnologySEC FORM 4 Code M—3,750filing
18 May 2026filed 20 May 2026MGNX MacroGenicsoption or derivative · BiotechnologySEC FORM 4 Code M—3,750 at $0.00filing
18 May 2026filed 20 May 2026MGNX MacroGenicsoption or derivative · BiotechnologySEC FORM 4 Code M—3,750 at $0.00filing
18 May 2026filed 20 May 2026MGNX MacroGenicsBiotechnologySEC FORM 4 Code M—3,750filing
30 May 2025filed 3 Jun 2025RGNX Regenxbiooption or derivative · BiotechnologySEC FORM 4 Code A—39,815 at $0.00filing
30 May 2025filed 3 Jun 2025RGNX RegenxbioBiotechnologySEC FORM 4 Code A—7,768 at $0.00filing
21 May 2025filed 22 May 2025MGNX MacroGenicsoption or derivative · BiotechnologySEC FORM 4 Code A—3,750 at $0.00filing
21 May 2025filed 22 May 2025MGNX MacroGenicsoption or derivative · BiotechnologySEC FORM 4 Code A—22,000 at $0.00filing
20 May 2025filed 22 May 2025MGNX MacroGenicsoption or derivative · BiotechnologySEC FORM 4 Code M—6,500 at $0.00filing
20 May 2025filed 22 May 2025MGNX MacroGenicsBiotechnologySEC FORM 4 Code M—6,500filing
31 May 2024filed 4 Jun 2024RGNX Regenxbiooption or derivative · BiotechnologySEC FORM 4 Code A—24,454 at $0.00filing
31 May 2024filed 4 Jun 2024RGNX RegenxbioBiotechnologySEC FORM 4 Code A—4,790 at $0.00filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Not placed3

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

Related people

Nobody else traded the same names lately.