Summary
Updated Aug 31, 2026
William T. Bosway is President and CEO, Director of GIBRALTAR INDUSTRIES, INC. (ROCK). 9 SEC Form 4 filings on record, most recently on 1 July 2026. Most recent open-market trade: bought $739K of ROCK on 27 May 2026. Lifetime open-market purchases: $1.01M. Historical track record: 3/5 stars across 4 tracked purchases.
Recent Transactions
9Every recent SEC Form 4 transaction William T. Bosway has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★☆☆ (3/5) |
| Total purchases tracked | 4 |
| Purchases with forward-return data | 4 |
| 30-day win rate | 75% |
| 90-day win rate | 25% |
| Avg 5-day return | +1.20% |
| Avg 30-day return | +5.24% |
| Avg 90-day return | +2.37% |
| Best 30-day return | +17.90% |
Trading Pattern
InsiderAlpha's records for William T. Bosway go back to 2026: 9 primary Form 4 filings, an average of 9.0 per year. The typical open-market purchase is $253K (4 buys totaling $1.01M). The largest single buy on record is $739K of ROCK in 2026. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies William T. Bosway files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- James S. Metcalf - $502K of ROCK open-market activity in the last 12 months
- Katherine Bolanowski - $50K of ROCK open-market activity in the last 12 months
- Joseph A. Lovechio - $35K of ROCK open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is William T. Bosway?
William T. Bosway is a corporate insider, tracked as President and CEO, Director of GIBRALTAR INDUSTRIES, INC. (ROCK). InsiderAlpha holds 9 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has William T. Bosway submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has William T. Bosway been buying or selling stock?
Recorded transactions: 4 open-market purchases ($1.01M) and 0 open-market sales across all tracked filings.
How accurate is William T. Bosway's historical track record?
Across 4 tracked purchases, William T. Bosway averaged +5.2% avg 30-day return with a 75% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
Where can I see all of William T. Bosway's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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