Stephen D. O'Brien
CIK 1920307 · View on SEC EDGAR ↗
Insider
First SEC filing: April 4, 2022 · Latest: Feb. 17, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 17 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 13, 2026 | AOS | M | 2,905 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| Feb. 13, 2026 | AOS | A | 791 | — | — | 6,510 Direct | +13.83% | Acquired | (price as of 2026-08-19) |
| Feb. 13, 2026 | AOS | F | 1,144 | — | — | 5,719 Direct | -16.67% | Disposed | (price as of 2026-08-19) |
| Feb. 13, 2026 | AOS | M | 2,905 | — | — | 6,863 Direct | +73.40% | Acquired | (price as of 2026-08-19) |
| Feb. 9, 2026 | AOS | A | 4,900 | — | — | 17,605 Direct | +38.57% | Acquired | (price as of 2026-08-19) |
| April 1, 2025 | AOS | M | 1,930 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| April 1, 2025 | AOS | F | 760 | $65.22 | $49,567 | 3,899 Direct | -16.31% | Disposed | -4.3% (price as of 2026-08-19) |
| April 1, 2025 | AOS | M | 1,930 | — | — | 4,659 Direct | +70.72% | Acquired | (price as of 2026-08-19) |
| Feb. 10, 2025 | AOS | A | 5,725 | — | — | 14,635 Direct | +64.25% | Acquired | (price as of 2026-08-19) |
| Feb. 7, 2025 | AOS | M | 1,110 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| Feb. 7, 2025 | AOS | F | 496 | $65.65 | $32,562 | 2,718 Direct | -15.43% | Disposed | -4.9% (price as of 2026-08-19) |
| Feb. 7, 2025 | AOS | M | 1,110 | — | — | 3,214 Direct | +52.76% | Acquired | (price as of 2026-08-19) |
| Aug. 16, 2024 | AOS | M | 3,455 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| Aug. 16, 2024 | AOS | F | 1,360 | $79.97 | $108,759 | 2,095 Direct | -39.36% | Disposed | -21.9% (price as of 2026-08-19) |
| Aug. 16, 2024 | AOS | M | 3,455 | — | — | 3,455 Direct | — | Acquired | (price as of 2026-08-19) |
| Feb. 12, 2024 | AOS | A | 4,075 | — | — | 13,475 Direct | +43.35% | Acquired | (price as of 2026-08-19) |
| Feb. 13, 2023 | AOS | A | 2,905 | — | — | 9,400 Direct | +44.73% | Acquired | (price as of 2026-08-19) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Feb. 13, 2026 | AOS | Restricted Stock Units | Common Stock (2,905) | — | — | 2,905 | Disposed |
| Feb. 9, 2026 | AOS | Restricted Stock Units | Common Stock (4,900) | — | — | 4,900 | Acquired |
| April 1, 2025 | AOS | Restricted Stock Units | Common Stock (1,930) | — | — | 1,930 | Disposed |
| Feb. 10, 2025 | AOS | Restricted Stock Units | Common Stock (5,725) | — | — | 5,725 | Acquired |
| Feb. 7, 2025 | AOS | Restricted Stock Units | Common Stock (1,110) | — | — | 1,110 | Disposed |
| Aug. 16, 2024 | AOS | Restricted Stock Units | Common Stock (3,455) | — | — | 3,455 | Disposed |
| Feb. 12, 2024 | AOS | Restricted Stock Units | Common Stock (4,075) | — | — | 4,075 | Acquired |
| Feb. 13, 2023 | AOS | Restricted Stock Units | Common Stock (2,905) | — | — | 2,905 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 4 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| April 4, 2022 | AOS | Restricted Stock Units→ Common Stock (3,455) | 3,455 | Direct |
| April 4, 2022 | AOS | Restricted Stock Units→ Common Stock (1,110) | 1,110 | Direct |
| April 4, 2022 | AOS | Employee Stock Options (Right to Buy)→ Common Stock (4,690) | 4,690 | Direct |
| April 4, 2022 | AOS | Restricted Stock Units→ Common Stock (1,930) | 1,930 | Direct |