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Keith Murphy

CIK 1536583 · EXECUTIVE CHAIRMAN · last filed 2026-01-29

Keith Murphy is an EXECUTIVE CHAIRMAN who has filed 36 SEC Form 4 insider transactions across 4 companies since 2013. The most recent filing, for VIVS, was dated Jan 29, 2026. Across all open-market trades the lifetime net is −$4.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $9.9K 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

$9.9K

Companies

4

Total Filings

36

Lifetime Open-Market Net

-$4.45M

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
VIVS EXECUTIVE CHAIRMAN 26,053 $0.38 $9.9K $0 1 2026-01-29
MTNB Director — $0.29 — $0 1 2025-05-02
VivoSim Labs, INC. (ONVO) Delisted EXECUTIVE CHAIRMAN 36,340 $2.04 $74.1K -$4.45M 28 2024-08-07
TuHURA Biosciences, Inc./NV (KTRA) Delisted Director 103 $7.54 $777 $0 3 2021-09-22

Recent Filings

36 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-01-29 VIVS Grant (A) +15,000 $0 EDGAR
2025-05-02 MTNB Grant (A) — $0 EDGAR
2024-08-07 VivoSim Labs, INC. (ONVO) Delisted Grant (A) +19,607 $0 EDGAR
2023-11-17 VivoSim Labs, INC. (ONVO) Delisted Grant (A) +19,607 $0 EDGAR
2022-11-14 VivoSim Labs, INC. (ONVO) Delisted Grant (A) +19,607 $0 EDGAR
2022-10-20 VivoSim Labs, INC. (ONVO) Delisted Grant (A) — $0 EDGAR
2021-10-12 VivoSim Labs, INC. (ONVO) Delisted Grant (A) — $0 EDGAR
2021-09-22 TuHURA Biosciences, Inc./NV (KTRA) Delisted Grant (A) — $0 EDGAR
2021-03-10 VivoSim Labs, INC. (ONVO) Delisted Grant (A) +20,000 $0 EDGAR
2020-12-11 VivoSim Labs, INC. (ONVO) Delisted Grant (A) — $0 EDGAR
Showing 1–10 of 36
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Form 4 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.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.