Martin Brenner
CIK 1770235 · See Remarks · last filed 2026-03-23
"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
$51.8K
Companies
2
Total Filings
28
Lifetime Open-Market Net
-$15.8K
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 |
|---|---|---|---|---|---|---|---|
| IBIO | See Remarks | 30,652 | $1.69 | $51.8K | -$15.8K | 25 | 2026-03-23 |
| Pfenex Inc. (PFNX) Delisted | Chief Scientific Officer | — | — | — | $0 | 2 | 2020-02-03 |
Recent Filings · Page 3 of 3
28 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-01-24 | IBIO | Grant (A) | +130,000 | $0 | EDGAR |
| 2022-11-15 | IBIO | Grant (A) | +95,348 | $0 | EDGAR |
| 2022-08-31 | IBIO | Grant (A) | — | $0 | EDGAR |
| 2021-08-25 | IBIO | Grant (A) | — | $0 | EDGAR |
| 2021-01-19 | IBIO | Grant (A) | — | $0 | EDGAR |
| 2020-10-05 | — | U | — | $0 | |
| 2020-02-03 | Pfenex Inc. (PFNX) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-04-01 | Pfenex Inc. (PFNX) Delisted | Grant (A) | — | $0 | EDGAR |
Showing 21–28 of 28
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Page 3 of 3
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.