Jon Marc Wigginton
CIK 1587487 · Chief Medical Officer · last filed 2026-06-09
"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
$75.0K
Companies
4
Total Filings
38
Lifetime Open-Market Net
-$4.09M
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 |
|---|---|---|---|---|---|---|---|
| STRO | Director | — | $28.80 | — | $0 | 8 | 2026-06-09 |
| Checkmate Pharmaceuticals, Inc. (CMPI) Delisted | Director | — | $10.50 | — | $0 | 2 | 2022-05-31 |
| CGEM | Chief Medical Officer | — | $13.70 | — | $0 | 1 | 2021-01-11 |
| MGNX | Sr VP, Clinical Dev. & CMO | 18,930 | $3.96 | $75.0K | -$4.09M | 27 | 2020-02-24 |
Recent Filings · Page 2 of 4
38 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-12-01 | STRO | Grant (A) | — | $0 | EDGAR |
| 2020-02-24 | MGNX | Grant (A) | — | $0 | EDGAR |
| 2019-02-25 | MGNX | Grant (A) | — | $0 | EDGAR |
| 2018-03-06 | MGNX | Grant (A) | — | $0 | EDGAR |
| 2018-02-27 | MGNX | Tax (F) | −11,070 | -$259.7K | EDGAR |
| 2018-01-18 | MGNX | Mixed | — | -$76.5K | EDGAR |
| 2017-11-21 | MGNX | Mixed | — | -$76.5K | EDGAR |
| 2017-10-26 | MGNX | Mixed | — | -$153.0K | EDGAR |
| 2017-06-06 | MGNX | Mixed | — | -$76.5K | EDGAR |
| 2017-04-20 | MGNX | Mixed | — | -$229.5K | EDGAR |
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.