Gibraltar Industries, Inc.
Gibraltar Industries, Inc. (ROCK) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ROCK · as of Sep 30, 2025
Ownership Breakdown
271
Institutional Holders
▲ 2 vs Q2
$1.88B
Total Inst. Value
▲ $129.39M vs Q2
29.66M
Shares Outstanding
freeFloat 98.57%
29.95M
13F Shares Held
▲ 276,205 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ROCK largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. steel works, blast furnaces & rolling & finishing mills | 5.23M | 17.61% | 17.61% | $328.60B | Nov 12, 2025 | ▼ 40.7K |
FMR LLC steel works, blast furnaces & rolling & finishing mills | 3.12M | 10.48% | 10.48% | $195.63B | Nov 13, 2025 | ▲ 417.7K |
VANGUARD GROUP INC steel works, blast furnaces & rolling & finishing mills | 2.90M | 9.76% | 9.76% | $182.13B | Nov 7, 2025 | ▼ 5.7K |
DIMENSIONAL FUND ADVISORS LP steel works, blast furnaces & rolling & finishing mills | 1.69M | 5.67% | 5.67% | $105.84B | Nov 12, 2025 | ▼ 4.3K |
STATE STREET CORP steel works, blast furnaces & rolling & finishing mills | 1.29M | 4.34% | 4.34% | $80.93B | Nov 14, 2025 | ▲ 915 |
BARROW HANLEY MEWHINNEY & STRAUSS LLC steel works, blast furnaces & rolling & finishing mills | 953.6K | 3.21% | 3.21% | $59.88B | Nov 13, 2025 | ▲ 38.1K |
VICTORY CAPITAL MANAGEMENT INC steel works, blast furnaces & rolling & finishing mills | 902.6K | 3.04% | 3.04% | $56.68B | Nov 12, 2025 | ▼ 210.0K |
GEODE CAPITAL MANAGEMENT, LLC steel works, blast furnaces & rolling & finishing mills | 736.8K | 2.48% | 2.48% | $46.28B | Nov 12, 2025 | ▼ 127.2K |
SILVERCREST ASSET MANAGEMENT GROUP LLC steel works, blast furnaces & rolling & finishing mills | 684.2K | 2.30% | 2.30% | $42.97B | Nov 14, 2025 | ▼ 22.9K |
ALLIANCEBERNSTEIN L.P. steel works, blast furnaces & rolling & finishing mills | 536.7K | 1.81% | 1.81% | $33.70B | Nov 14, 2025 | ▲ 469.1K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
20
Increased
+1.20M shares4
New Positions
first time holders22
Decreased
−1.24M shares0
Sold Out
fully exitedNet shares change (top 50)
36.9K
+1.20M / −1.24M
Net new holders
+2
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ROCK insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
12
Buy transactions
1
Sell transactions
12.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Bosway William T President and CEO | May 26, 2026 | Purchase | 19,735 | $37.44 | $738.8K | 250.3K | Form 4 ↗ |
Bolanowski Katherine General Counsel, VP, Secretary | May 21, 2026 | Purchase | 144 | $35.66 | $5.1K | 17.4K | Form 4 ↗ |
Bolanowski Katherine General Counsel, VP, Secretary | May 21, 2026 | Purchase | 1,256 | $35.63 | $44.8K | 17.2K | Form 4 ↗ |
Lovechio Joseph A VP and CFO | May 20, 2026 | Purchase | 1,000 | $34.62 | $34.6K | 13.4K | Form 4 ↗ |
Mizell Gwendolyn G director | May 7, 2026 | Award | 3,059 | $37.59 | $115.0K | 12.7K | Form 4 ↗ |
Nish James B director | May 7, 2026 | Award | 3,059 | $37.59 | $115.0K | 15.0K | Form 4 ↗ |
Myers Linda Kristine director | May 7, 2026 | Award | 3,059 | $37.59 | $115.0K | 21.7K | Form 4 ↗ |
Pope Atlee Valentine director | May 7, 2026 | Award | 3,059 | $37.59 | $115.0K | 14.8K | Form 4 ↗ |
Shah Manish H director | May 7, 2026 | Award | 3,059 | $37.59 | $115.0K | 12.7K | Form 4 ↗ |
METCALF JAMES S director | May 7, 2026 | Award | 3,059 | $37.59 | $115.0K | 18.6K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Gibraltar Industries, Inc. (ROCK) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 1.43%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Gibraltar Industries, Inc. is BLACKROCK, INC., holding approximately 5.23 million shares — equal to 17.61% of outstanding shares — as of September 30, 2025.
A total of 271 institutional investors currently hold ROCK stock, with a combined institutional value of approximately $1.88 billion as of the most recent 13F filing period.
Frequently asked questions
ROCK ownershipGibraltar Industries, Inc. (ROCK) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is BLACKROCK, INC. with a 17.61% stake. Company insiders hold 1.43%. Data sourced from SEC Form 13F as of September 30, 2025.