Mastalerz John A Jr

Officer · WAB

As of 2026-09-16, Mastalerz John A Jr has 9 Form 4 transactions on record across 1 company — 5 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: $2.1MIndirect: $0$2.1Mas of 2026-09-16
  • Direct $2.1M
  • Indirect $0
WABdirect7,593 sh$2.1M

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

WAB · 9 trades
2026-03-05: Award / grant, 519 sh ($0)2026-03-02: Withheld for tax, 321 sh ($84K)2026-02-12: Award / grant, 3,213 sh ($827K)2026-02-12: Withheld for tax, 1,104 sh ($284K)2025-11-12: Sale, 2,766 sh ($581K)2025-03-20: Award / grant, 668 sh ($0)2025-03-03: Withheld for tax, 306 sh ($56K)2025-02-13: Award / grant, 3,320 sh ($644K)2025-02-13: Withheld for tax, 1,313 sh ($255K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2025-11-12WABSale2,766 @ $210.00$581K−34.4% of holding5,286Form 4
8 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-03-05WABAward / grant5197,593Form 4
2026-03-02WABWithheld for tax3217,074Form 4
2026-02-12WABAward / grant3,2138,499Form 4
2026-02-12WABWithheld for tax1,1047,395Form 4
2025-03-20WABAward / grant6688,052Form 4
2025-03-03WABWithheld for tax3067,384Form 4
2025-02-13WABAward / grant3,3209,003Form 4
2025-02-13WABWithheld for tax1,3137,690Form 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.