Arthur J Gallagher & Co
Ownership
Ownership Structure
Who owns Arthur J Gallagher & Co (AJG)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.9% of the shares are freely tradable; institutional investors hold 94.4%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 7.73 | 19,822,870 | +2.7 | 06/30/2026 |
| FMR Inc | 7.27 | 18,645,620 | +27.5 | 06/30/2026 |
| Vanguard Capital Management, LLC | 6.54 | 16,777,183 | +0.5 | 06/30/2026 |
| JPMorgan Chase & Co | 5.60 | 14,356,764 | -26.6 | 06/30/2026 |
| Capital World Investors | 4.88 | 12,511,991 | -9.4 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.86 | 12,454,725 | +0.3 | 06/30/2026 |
| State Street Corp | 4.41 | 11,303,790 | +3.0 | 06/30/2026 |
| Dodge & Cox | 3.65 | 9,363,634 | +27.3 | 06/30/2026 |
| NORGES BANK | 2.63 | 6,733,790 | -9.5 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.18 | 8,141,131 | -0.3 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Gallagher Patrick Murphy | Chief Operating Officer | 201,355 | 55,594,185 $ | Aug 5, 2026 | indirect |
| Hudson Scott R | Vice President | 90,262 | 24,921,338 $ | Sep 2, 2026 | direct |
| Bay Walter D. | General Counsel | 71,292 | 19,683,747 $ | Aug 24, 2026 | direct |
| Cary Richard C | Controller, CAO | 46,819 | 12,926,860 $ | Sep 15, 2026 | direct |
| Mead Christopher E | VICE PRESIDENT | 22,223 | 6,135,883 $ | Aug 19, 2026 | direct |
| Miskel Christopher C. | Director | 10,826 | 2,989,180 $ | Sep 1, 2026 | direct |
| Bloom Mark H. | Vice President | 4,417 | 1,219,443 $ | Aug 16, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 15, 2026 | Cary Richard C | Controller, CAO | Sell | 1,000 | 252.86 | 252,858 |
| Sep 8, 2026 | Gallagher Patrick Murphy | Chief Operating Officer | Other | 49,988 | 0.00 | – |
| Sep 8, 2026 | Gallagher J Patrick Jr | CEO | Other | 49,988 | 0.00 | – |
| Sep 2, 2026 | Hudson Scott R | Vice President | Sell | 12,000 | 264.13 | 3,169,596 |
| Sep 2, 2026 | Hudson Scott R | Vice President | Other | 12,000 | 86.17 | 1,034,040 |
| Sep 1, 2026 | Miskel Christopher C. | Director | Other | 153 | 262.00 | 40,086 |
| Aug 24, 2026 | Bay Walter D. | General Counsel | Sell | 12,000 | 270.08 | 3,240,972 |
| Aug 19, 2026 | Mead Christopher E | VICE PRESIDENT | Sell | 3,500 | 257.03 | 899,588 |
| Aug 19, 2026 | Mead Christopher E | VICE PRESIDENT | Other | 3,500 | 86.17 | 301,595 |
| Aug 16, 2026 | Bloom Mark H. | Vice President | Other | 607 | 251.21 | 152,484 |
| Aug 16, 2026 | Bloom Mark H. | Vice President | Other | 1,280 | 0.00 | – |
| Aug 5, 2026 | Gallagher Patrick Murphy | Chief Operating Officer | Other | 23,800 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.