Mark W Midkiff
CIK 1728747 · Chief Risk Officer · last filed 2026-04-29
Mark W Midkiff is a Chief Risk Officer who has filed 20 SEC Form 4 insider transactions across 5 companies since 2018. The most recent filing, for TCBIO, was dated Apr 29, 2026. Across all open-market trades the lifetime net is −$510.3K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.5M 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.
$3.54M
5
20
-$510.3K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| TCBIO | Director | 2,804 | $20.41 | $57.2K | $0 | 4 | 2026-04-29 |
| KEYpL | Chief Risk Officer | 79,560 | $24.81 | $1.97M | $0 | 2 | 2023-02-28 |
| KEYpK | Chief Risk Officer | 61,202 | $20.35 | $1.25M | -$520.3K | 11 | 2022-02-28 |
| KEYpJ | Chief Risk Officer | 12,458 | $20.52 | $255.6K | $0 | 2 | 2019-02-20 |
| KEYpI | Chief Risk Officer | 458 | $25.09 | $11.5K | $10.0K | 1 | 2018-01-30 |
Recent Filings
20 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-04-29 | TCBIO | Grant (A) | — | $0 | EDGAR |
| 2026-04-23 | TCBIO | Exer (M) | +1,670 | $0 | EDGAR |
| 2025-04-24 | TCBIO | Mixed | +1,134 | $0 | EDGAR |
| 2024-06-04 | TCBIO | Grant (A) | — | $0 | EDGAR |
| 2023-02-28 | KEYpL | Mixed | +3,610 | -$54.9K | EDGAR |
| 2023-02-22 | KEYpL | Mixed | +11,752 | -$101.8K | EDGAR |
| 2022-02-28 | KEYpK | Mixed | +3,462 | -$69.3K | EDGAR |
| 2022-02-22 | KEYpK | Mixed | +6,571 | -$140.3K | EDGAR |
| 2022-02-16 | KEYpK | Grant (A) | — | $0 | EDGAR |
| 2021-05-03 | KEYpK | Mixed | +249 | -$99.4K | EDGAR |