Porteous William D.
Director · BKSY
As of 2026-09-16, Porteous William D. has 11 Form 4 transactions on record across 1 company — 6 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 $1.9M
- Indirect $0
| BKSY | direct | 87,323 sh | $1.9M |
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 |
|---|---|---|---|---|---|---|---|
| 2024-12-12 | BKSY | Sale | 570 @ $10.65 | $6K | −1.0% of holding | 58,362 | Form 4 |
10 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-11 | BKSY | Award / grant | 8,733 | 87,323 | Form 4 |
| 2026-06-30 | BKSY | Award / grant | 805 | 78,590 | Form 4 |
| 2026-03-31 | BKSY | Award / grant | 894 | 77,785 | Form 4 |
| 2025-12-31 | BKSY | Award / grant | 1,200 | 76,891 | Form 4 |
| 2025-12-10 | BKSY | Award / grant | 1,500 | 75,691 | Form 4 |
| 2025-09-30 | BKSY | Award / grant | 1,116 | 74,191 | Form 4 |
| 2025-09-11 | BKSY | Award / grant | 8,625 | 73,075 | Form 4 |
| 2025-06-30 | BKSY | Award / grant | 1,093 | 64,450 | Form 4 |
| 2025-03-31 | BKSY | Award / grant | 2,910 | 63,357 | Form 4 |
| 2024-12-31 | BKSY | Award / grant | 2,085 | 60,447 | 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.