Keith Murphy
CIK 1536583 · EXECUTIVE CHAIRMAN · last filed 2026-01-29
"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 · Page 3 of 4
36 filingsInsider 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 |
|---|---|---|---|---|---|
| 2016-08-23 | VivoSim Labs, INC. (ONVO) Delisted | Tax (F) | −5,129 | -$20.5K | EDGAR |
| 2016-07-13 | VivoSim Labs, INC. (ONVO) Delisted | Grant (A) | +208,000 | $0 | EDGAR |
| 2016-02-18 | VivoSim Labs, INC. (ONVO) Delisted | Mixed | −24,690 | -$50.4K | EDGAR |
| 2015-08-13 | VivoSim Labs, INC. (ONVO) Delisted | Buy (P) | +20,000 | $51.2K | EDGAR |
| 2015-06-08 | VivoSim Labs, INC. (ONVO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2015-02-18 | VivoSim Labs, INC. (ONVO) Delisted | Mixed | −28,008 | -$177.6K | EDGAR |
| 2014-02-20 | VivoSim Labs, INC. (ONVO) Delisted | Mixed | −77,307 | -$1.25M | EDGAR |
| 2014-02-13 | VivoSim Labs, INC. (ONVO) Delisted | Mixed | −27,105 | -$268.9K | EDGAR |
| 2014-01-23 | VivoSim Labs, INC. (ONVO) Delisted | Sell (S) | −100,000 | -$1.09M | EDGAR |
| 2013-12-12 | VivoSim Labs, INC. (ONVO) Delisted | Sell (S) | −100,000 | -$1.01M | EDGAR |
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.
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.