O'Brien Stephen D.
Officer · AOS
As of 2026-09-16, O'Brien Stephen D. has 12 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.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|
12 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-02-13 | AOS | Option exercise | 2,905 | 6,863 | Form 4 |
| 2026-02-13 | AOS | Award / grant | 791 | 6,510 | Form 4 |
| 2026-02-13 | AOS | Withheld for tax | 1,144 | 5,719 | Form 4 |
| 2026-02-13 | AOS | Option exercise | 2,905 | 0 | Form 4 |
| 2026-02-09 | AOS | Award / grant | 4,900 | 17,605 | Form 4 |
| 2025-04-01 | AOS | Withheld for tax | 760 | 3,899 | Form 4 |
| 2025-04-01 | AOS | Option exercise | 1,930 | 0 | Form 4 |
| 2025-04-01 | AOS | Option exercise | 1,930 | 4,659 | Form 4 |
| 2025-02-10 | AOS | Award / grant | 5,725 | 14,635 | Form 4 |
| 2025-02-07 | AOS | Withheld for tax | 496 | 2,718 | Form 4 |
| 2025-02-07 | AOS | Option exercise | 1,110 | 3,214 | Form 4 |
| 2025-02-07 | AOS | Option exercise | 1,110 | 0 | 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.