Insider · CIK 0001675953
William T Bosway
Files at STRL (STERLING INFRASTRUCTURE, INC.), ROCK (GIBRALTAR INDUSTRIES, INC.). First filing Mar 10, 2026, latest May 27, 2026.
In brief
William T Bosway files SEC Form 4 as CEO, president and director at ROCK (GIBRALTAR INDUSTRIES, INC.), and also at STRL (STERLING INFRASTRUCTURE, INC.). Since Mar 10, 2026, William T Bosway has reported 3 open-market buys worth $1.0M and 0 open-market sells worth $0, the latest filed on May 27, 2026.
A track record needs three past buys with six months of prices behind them; William T Bosway has 0, so none is measured yet.
The newest scored trade: bought $739k of ROCK on May 26, 2026, filed May 27, 2026, scored 77 (notable). In the last 12 months: 3 buys worth $1.0M and 0 sells worth $0.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
ROCK: GIBRALTAR INDUSTRIES, INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 77Notable | GIBRALTAR INDUSTRIES, INC. | $739k 19,735 shares | +9% | +11% from low-50% from high | |
| 57Moderate | GIBRALTAR INDUSTRIES, INC. | $41k 1,000 shares | +0% | +5% from low-45% from high | |
| 64Notable | GIBRALTAR INDUSTRIES, INC. | $232k 6,000 shares | +3% | 0% from low-47% from high |
Transactions
Every row this insider has filed, 27 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Restricted Stock Unit (2018 MSPP Match)derivative | +518 | $0.00 | $0 | 45,560 | 12 d ago |
| Jun 30, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Restricted Stock Unit (2018 MSPP Match)derivative | +548 | $0.00 | $0 | 45,041 | Jul 1, 2026 |
| May 26, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | POpen-market purchase Common Stock | +19,735 | $37.44 | $739k | 250,320 | May 27, 2026 |
| May 7, 2026 | STRL STERLING INFRASTRUCTURE, INC. | AGrant or award Common Stock | +181 | $0.00 | $0 | 2,198 | May 11, 2026 |
| Mar 31, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Restricted Stock Unit (2018 MSPP Match)derivative | +512 | $0.00 | $0 | 44,494 | Apr 1, 2026 |
| Mar 13, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | POpen-market purchase Common Stock | +1,000 | $41.37 | $41k | 230,585 | Mar 16, 2026 |
| Mar 9, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | POpen-market purchase Common Stock | +4,500 | $38.29 | $172k | 228,085 | Mar 10, 2026 |
| Mar 10, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | POpen-market purchase Common Stock | +1,500 | $39.53 | $59k | 229,585 | Mar 10, 2026 |
| Mar 4, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | FTax withholding Common Stock | -30,026 | $43.05 | $1.3M | 223,585 | Mar 5, 2026 |
| Mar 2, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Common Stock | +27,801 | $0.00 | $0 | 255,566 | Mar 4, 2026 |
| Mar 3, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | FTax withholding Common Stock | -1,955 | $43.83 | $86k | 253,611 | Mar 4, 2026 |
| Mar 1, 2026 | ROCK GIBRALTAR INDUSTRIES, INC. | FTax withholding Common Stock | -5,872 | $45.48 | $267k | 227,765 | Mar 3, 2026 |
| May 8, 2025 | STRL STERLING INFRASTRUCTURE, INC. | AGrant or award Common Stock | +751 | $0.00 | $0 | 2,017 | May 9, 2025 |
| Mar 7, 2025 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Restricted Stock Unit (2018 MSPP Match)derivative | +4,784 | $0.00 | $0 | 43,982 | Mar 11, 2025 |
| Mar 7, 2025 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Restricted Stock Unit (2018 MSPP)derivative | +7,974 | $67.94 | $542k | 69,271 | Mar 11, 2025 |
| Mar 6, 2025 | ROCK GIBRALTAR INDUSTRIES, INC. | FTax withholding Common Stock | -2,278 | $65.71 | $150k | 233,637 | Mar 10, 2025 |
| Mar 3, 2025 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Common Stock | +17,653 | $0.00 | $0 | 235,915 | Mar 5, 2025 |
| Mar 1, 2025 | ROCK GIBRALTAR INDUSTRIES, INC. | FTax withholding Common Stock | -15,807 | $65.71 | $1.0M | 218,262 | Mar 3, 2025 |
| Feb 18, 2025 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Common Stock | +11,467 | $0.00 | $0 | 234,069 | Feb 19, 2025 |
| Mar 8, 2024 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Restricted Stock Unit (2018 MSPP Match)derivative | +10,330 | $0.00 | $0 | 39,197 | Mar 11, 2024 |
| Mar 8, 2024 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Restricted Stock Unit (2018 MSPP)derivative | +17,216 | $69.14 | $1.2M | 61,298 | Mar 11, 2024 |
| Mar 7, 2024 | STRL STERLING INFRASTRUCTURE, INC. | AGrant or award Common Stock | +192 | $0.00 | $0 | 192 | Mar 8, 2024 |
| Mar 1, 2024 | ROCK GIBRALTAR INDUSTRIES, INC. | FTax withholding Common Stock | -5,930 | $77.70 | $461k | 210,298 | Mar 4, 2024 |
| Mar 1, 2024 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Common Stock | +14,157 | $0.00 | $0 | 224,455 | Mar 4, 2024 |
| Mar 2, 2024 | ROCK GIBRALTAR INDUSTRIES, INC. | FTax withholding Common Stock | -1,853 | $77.70 | $144k | 222,602 | Mar 4, 2024 |
| Feb 20, 2024 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Common Stock | +71,574 | $0.00 | $0 | 216,228 | Feb 21, 2024 |
| Dec 31, 2023 | ROCK GIBRALTAR INDUSTRIES, INC. | AGrant or award Restricted Stock Unit (2018 MSPP Match)derivative | +287 | $0.00 | $0 | 28,868 | Jan 2, 2024 |
Questions about William T Bosway
Answered from the filings on this page, as of the latest one.
Is William T Bosway buying or selling?
In the last 12 months William T Bosway reported 3 open-market buys worth $1.0M and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $739k of ROCK on May 26, 2026. Grants, option exercises and tax withholding are not counted.
How did William T Bosway's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and William T Bosway has 0.
Where does William T Bosway file Form 4?
William T Bosway has filed Form 4 at ROCK (GIBRALTAR INDUSTRIES, INC.) as President and CEO; STRL (STERLING INFRASTRUCTURE, INC.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.