VANDERPLOEG MARTIN J.

Director · WK

As of 2026-09-16, VANDERPLOEG MARTIN J. has 18 Form 4 transactions on record across 1 company — 7 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $21.3MIndirect: $31.8M$53.0Mas of 2026-09-16
  • Direct $21.3M
  • Indirect $31.8M
WKindirect437,105 sh$31.8M
WKdirect292,275 sh$21.3M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

WK · 18 trades
2026-08-18: Gift, 2,780 sh ($0)2026-06-01: Withheld for tax, 28,942 sh ($1.5M)2026-06-01: Award / grant, 4,070 sh2026-06-01: Award / grant, 4,070 sh2026-02-01: Withheld for tax, 560 sh ($43K)2026-01-21: Gift, 491,270 sh ($0)2026-01-21: Gift, 491,270 sh ($0)2025-05-29: Award / grant, 3,218 sh2025-05-29: Award / grant, 3,218 sh2025-05-05: Gift, 84,210 sh ($0)2025-05-05: Gift, 84,210 sh ($0)2025-04-15: Option exercise, 84,210 sh ($1.2M)2025-04-15: Option exercise, 84,210 sh ($0)2025-02-20: Withheld for tax, 438 sh ($38K)2025-02-20: Award / grant, 2,828 sh ($0)2025-02-01: Withheld for tax, 2,886 sh ($283K)2025-01-10: Gift, 9,806 sh ($0)2025-01-10: Gift, 9,806 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
18 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-18WKGift2,780437,105Form 4
2026-06-01WKWithheld for tax28,942288,205Form 4
2026-06-01WKAward / grant4,070292,275Form 4
2026-06-01WKAward / grant4,070292,275Form 4
2026-02-01WKWithheld for tax560317,147Form 4
2026-01-21WKGift491,2700Form 4
2026-01-21WKGift491,2701,201,832Form 4
2025-05-29WKAward / grant3,218317,707Form 4
2025-05-29WKAward / grant3,218317,707Form 4
2025-05-05WKGift84,210314,489Form 4
2025-05-05WKGift84,210439,885Form 4
2025-04-15WKOption exercise84,210398,699Form 4
2025-04-15WKOption exercise84,2100Form 4
2025-02-20WKWithheld for tax438314,489Form 4
2025-02-20WKAward / grant2,828314,927Form 4
2025-02-01WKWithheld for tax2,886312,099Form 4
2025-01-10WKGift9,806314,985Form 4
2025-01-10WKGift9,806355,675Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.