The Hanover Insurance Group, Inc.
The Hanover Insurance Group, Inc. (THG) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · THG · as of Sep 30, 2025
Ownership Breakdown
465
Institutional Holders
▲ 30 vs Q2
$5.70B
Total Inst. Value
▲ $212.65M vs Q2
34.99M
Shares Outstanding
freeFloat 99.02%
31.38M
13F Shares Held
▼ 931,667 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
THG largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC fire, marine & casualty insurance | 3.70M | 10.31% | 10.31% | $672.48B | Nov 7, 2025 | ▼ 3.8K |
BLACKROCK, INC. fire, marine & casualty insurance | 3.53M | 9.84% | 9.84% | $641.65B | Nov 12, 2025 | ▼ 78.0K |
PRICE T ROWE ASSOCIATES INC /MD/ fire, marine & casualty insurance | 1.63M | 4.54% | 4.54% | $295.90B | Nov 14, 2025 | ▼ 66.4K |
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ fire, marine & casualty insurance | 1.27M | 3.53% | 3.53% | $229.87B | Oct 29, 2025 | ▼ 29.0K |
ALLIANCEBERNSTEIN L.P. fire, marine & casualty insurance | 1.26M | 3.52% | 3.52% | $229.35B | Nov 14, 2025 | ▼ 17.7K |
STATE STREET CORP fire, marine & casualty insurance | 1.24M | 3.45% | 3.45% | $225.03B | Nov 14, 2025 | ▼ 31.4K |
FULLER & THALER ASSET MANAGEMENT, INC. fire, marine & casualty insurance | 956.5K | 2.66% | 2.66% | $173.72B | Nov 13, 2025 | ▲ 53.8K |
DIMENSIONAL FUND ADVISORS LP fire, marine & casualty insurance | 790.8K | 2.20% | 2.20% | $143.62B | Nov 12, 2025 | ▲ 170 |
AQR CAPITAL MANAGEMENT LLC fire, marine & casualty insurance | 763.4K | 2.13% | 2.13% | $137.97B | Nov 14, 2025 | ▲ 209.6K |
GEODE CAPITAL MANAGEMENT, LLC fire, marine & casualty insurance | 698.1K | 1.94% | 1.94% | $126.82B | Nov 12, 2025 | ▲ 16.6K |
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
18
Increased
+1.14M shares1
New Positions
first time holders29
Decreased
−1.87M shares0
Sold Out
fully exitedNet shares change (top 50)
731.5K
+1.14M / −1.87M
Net new holders
-10
1 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
THG insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
16
Buy transactions
22
Sell transactions
0.73
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 |
|---|---|---|---|---|---|---|---|
Salvatore Bryan J Executive Vice President | Jun 3, 2026 | Sale | 16,394 | $185.76 | $3.05M | 29.1K | Form 4 ↗ |
Aristeguieta Francisco director | May 21, 2026 | Sale | 1,000 | $195.37 | $195.4K | 4.1K | Form 4 ↗ |
Roche John C President and CEO | May 19, 2026 | Tax Withhold | 24,766 | $193.79 | $4.80M | 149.4K | Form 4 ↗ |
Roche John C President and CEO | May 20, 2026 | Sale | 3,152 | $193.21 | $609.0K | 146.2K | Form 4 ↗ |
Roche John C President and CEO | May 20, 2026 | Sale | 5,145 | $194.05 | $998.4K | 141.1K | Form 4 ↗ |
Roche John C President and CEO | May 20, 2026 | Sale | 61 | $194.77 | $11.9K | 141.0K | Form 4 ↗ |
Kerrigan Dennis Francis Executive Vice President | May 20, 2026 | Sale | 6,262 | $192.99 | $1.21M | 12.0K | Form 4 ↗ |
Roche John C President and CEO | May 15, 2026 | Tax Withhold | 12,943 | $194.64 | $2.52M | 146.3K | Form 4 ↗ |
Roche John C President and CEO | May 18, 2026 | Sale | 375 | $196.55 | $73.7K | 145.9K | Form 4 ↗ |
Roche John C President and CEO | May 18, 2026 | Sale | 2,260 | $197.61 | $446.6K | 143.6K | 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
The Hanover Insurance Group, Inc. (THG) is primarily owned by institutional investors, who hold approximately 89.7% of total shares outstanding. Company insiders own approximately 0.98%, while retail and public investors account for the remaining 9.32%.
The largest institutional shareholder of The Hanover Insurance Group, Inc. is VANGUARD GROUP INC, holding approximately 3.70 million shares — equal to 10.31% of outstanding shares — as of September 30, 2025.
A total of 465 institutional investors currently hold THG stock, with a combined institutional value of approximately $5.70 billion as of the most recent 13F filing period.
Frequently asked questions
THG ownershipThe Hanover Insurance Group, Inc. (THG) is primarily owned by institutional investors, who hold approximately 89.7% of shares. The largest shareholder is VANGUARD GROUP INC with a 10.31% stake. Company insiders hold 0.98%. Data sourced from SEC Form 13F as of September 30, 2025.