William C. Kirby
CIK 1413483 · last filed 2026-02-27
William C. Kirby is a corporate insider who has filed 20 SEC Form 4 insider transactions across 3 companies since 2008. The most recent filing shows the insider bought $3.3M of TWN on Feb 27, 2026. Across all open-market trades the lifetime net is +$3.3M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $2.7M 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.
$2.70M
3
20
$3.35M
Holdings By Company
Recent Filings
20 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-02-27 | TWN | Buy (P) | +50,686 | $3.29M | EDGAR |
| 2026-01-12 | CBT | Grant (A) | +486 | $0 | EDGAR |
| 2025-01-14 | CBT | Grant (A) | +1,788 | $0 | EDGAR |
| 2024-01-12 | CBT | Grant (A) | +2,035 | $0 | EDGAR |
| 2023-01-13 | CBT | Grant (A) | +1,854 | $0 | EDGAR |
| 2022-01-14 | CBT | Grant (A) | +2,254 | $0 | EDGAR |
| 2021-01-11 | CBT | Grant (A) | +2,489 | $0 | EDGAR |
| 2020-12-02 | TWN | Buy (P) | +360 | $9.9K | EDGAR |
| 2020-11-12 | TWN | Buy (P) | +415 | $10.1K | EDGAR |
| 2020-01-13 | CBT | Grant (A) | +2,635 | $0 | EDGAR |