MARTIN J. VANDERPLOEG
CIK 1014008 · CEO · last filed 2026-06-03
MARTIN J. VANDERPLOEG is a CEO who has filed 70 SEC Form 4 insider transactions across 1 company since 2015. The most recent filing, for WK, was dated Jun 3, 2026. Across all open-market trades the lifetime net is −$348.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $35.6M 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.
$35.63M
1
70
-$348.41M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| WK | Director | 728,090 | $48.93 | $35.63M | -$348.41M | 70 | 2026-06-03 |
Recent Filings
70 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-03 | WK | Mixed | −24,872 | -$1.53M | EDGAR |
| 2026-02-03 | WK | Mixed | −560 | -$43.1K | EDGAR |
| 2025-06-02 | WK | Mixed | +3,218 | $0 | EDGAR |
| 2025-04-17 | WK | Exer (M) | +84,210 | $1.24M | EDGAR |
| 2025-02-24 | WK | Mixed | +2,390 | -$37.9K | EDGAR |
| 2025-02-04 | WK | Tax (F) | −2,886 | -$283.5K | EDGAR |
| 2025-01-14 | WK | Gift (G) | — | $0 | EDGAR |
| 2024-09-13 | WK | Buy (P) | +4,000 | $280.2K | EDGAR |
| 2024-09-04 | WK | Tax (F) | −2,071 | -$161.9K | EDGAR |
| 2024-08-19 | WK | Buy (P) | +4,000 | $315.6K | EDGAR |