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DAVID C STUMP

CIK 1191235 · Exec. Vice President · last filed 2026-06-02

DAVID C STUMP is an Exec. Vice President who has filed 66 SEC Form 4 insider transactions across 5 companies since 2007. The most recent filing, for RGNX, was dated Jun 2, 2026. Across all open-market trades the lifetime net is −$3.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $250.6K across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$250.6K

Companies

5

Total Filings

66

Lifetime Open-Market Net

-$3.82M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
RGNX Director 28,861 $6.66 $192.2K $0 12 2026-06-02
MGNX Director 14,750 $3.96 $58.4K $0 14 2026-05-20
PORTOLA PHARMACEUTICALS INC (PTLA) Delisted Director 0 — — $0 7 2020-07-02
Viracta Therapeutics, Inc. (SNSS) Delisted Director — $18.62 — $0 15 2020-07-01
HUMAN GENOME SCIENCES INC (HGSI) Delisted Exec. Vice President 0 — — -$3.82M 12 2012-08-01

Recent Filings

66 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2026-06-02 RGNX Grant (A) +9,807 $0 EDGAR
2026-05-20 MGNX Mixed +3,750 $0 EDGAR
2025-06-03 RGNX Grant (A) +7,768 $0 EDGAR
2025-05-22 MGNX Mixed +6,500 $0 EDGAR
2024-06-04 RGNX Grant (A) +4,790 $0 EDGAR
2024-05-23 MGNX Grant (A) — $0 EDGAR
2024-05-22 MGNX Exer (M) +4,500 $0 EDGAR
2023-06-06 RGNX Grant (A) +3,486 $0 EDGAR
2023-06-02 MGNX Grant (A) — $0 EDGAR
2022-06-07 RGNX Grant (A) +3,010 $0 EDGAR
Showing 1–10 of 66
Page 1 of 7
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.