DeNinno David L
Officer · WAB
As of 2026-09-16, DeNinno David L has 17 Form 4 transactions on record across 1 company — 11 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.
Pattern in the record: open-market sales filed in May in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $15.2M
- Indirect $0
| WAB | direct | 55,128 sh | $15.2M |
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
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-24 | WAB | Sale | 3,000 @ $301.31 | $904K | −5.2% of holding | 55,128 | Form 4 |
| 2026-05-05 | WAB | Sale | 2,500 @ $265.48 | $664K | −4.1% of holding | 58,128 | Form 4 |
| 2025-12-04 | WAB | Sale | 5,000 @ $214.62 | $1.1M | −9.0% of holding | 50,450 | Form 4 |
| 2025-11-12 | WAB | Sale | 5,000 @ $209.94 | $1.0M | −8.3% of holding | 55,450 | Form 4 |
| 2025-10-28 | WAB | Sale | 2,100 @ $199.87 | $420K | −3.4% of holding | 60,450 | Form 4 |
| 2025-05-22 | WAB | Sale | 3,000 @ $201.05 | $603K | −4.7% of holding | 60,450 | Form 4 |
| 2025-05-02 | WAB | Sale | 3,000 @ $191.82 | $575K | −4.5% of holding | 63,450 | Form 4 |
10 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-03-05 | WAB | Award / grant | 3,763 | 60,628 | Form 4 |
| 2026-03-02 | WAB | Withheld for tax | 2,243 | 56,865 | Form 4 |
| 2026-02-12 | WAB | Award / grant | 15,354 | 65,804 | Form 4 |
| 2026-02-12 | WAB | Withheld for tax | 6,698 | 59,108 | Form 4 |
| 2025-10-28 | WAB | Option exercise | 2,100 | 62,550 | Form 4 |
| 2025-10-28 | WAB | Option exercise | 2,100 | 0 | Form 4 |
| 2025-03-20 | WAB | Award / grant | 5,027 | 66,450 | Form 4 |
| 2025-03-03 | WAB | Withheld for tax | 2,297 | 61,423 | Form 4 |
| 2025-02-13 | WAB | Award / grant | 14,853 | 70,205 | Form 4 |
| 2025-02-13 | WAB | Withheld for tax | 6,485 | 63,720 | Form 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.