Arthur J. Gallagher & Co.
AJG- Exchange
- NYSE
- Industry
- Insurance Agents, Brokers & Service
- SEC CIK
- 0000354190
In the last 90 days, Arthur J. Gallagher & Co. insiders filed 0 open-market purchases and 4 sales; 1,295 institutions reported holding it in 13F filings for Q2 2026, worth $54.7B in total; no superinvestor holds it.
Holders of 5% or more of AJG
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Arthur J. Gallagher & Co., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| JPMorgan Chase & Co | 13G/A | 7.80%20.2M shares | +1.10 ppfrom 6.70% | Feb 10, 20253 filings | Oct 31, 2025 | SEC |
| BlackRock, Inc. | 13G/A | 6.90%17.7M shares | – | Jul 16, 20251 filing | Jul 16, 2025 | SEC |
| Capital World Investors | 13G | 5.00%13.0M shares | New | Feb 13, 20261 filing | Feb 13, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
6 Schedule 13D and 13G filings on Arthur J. Gallagher & Co., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 26, 20263:44 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 13, 20265:32 PM ET | Capital World Investors | 13G | 5.00%13.0M shares | New | Dec 31, 2025 | SEC |
| Oct 31, 20259:48 AM ET | JPMorgan Chase & Co | 13G/A | 7.80%20.2M shares | +1.10 ppfrom 6.70% | Sep 30, 2025 | SEC |
| Jul 16, 20257:02 PM ET | BlackRock, Inc. | 13G/A | 6.90%17.7M shares | – | Jun 30, 2025 | SEC |
| Apr 22, 202512:01 PM ET | JPMorgan Chase & Co | 13G/A | 6.70%17.1M shares | +1.70 ppfrom 5.00% | Mar 31, 2025 | SEC |
| Feb 10, 202512:09 PM ET | JPMorgan Chase & Co | 13G | 5.00%12.5M shares | New | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Arthur J. Gallagher & Co. shares.
No Form 144 notices for Arthur J. Gallagher & Co. are on file.