Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionCIBC Private Wealth Group, LLC
Latest Disclosed Ownership104,629 shares
Latest Disclosed Value $ 27,076,888
CIBC Private Wealth Group, LLC reports 61.77% decrease in ownership of AJG / Arthur J. Gallagher & Co.

On February 12, 2026 - CIBC Private Wealth Group, LLC filed a 13F-HR form disclosing ownership of 104,629 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $27,076,888 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 24, 2025 disclosing 273,659 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -61.77% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-02-12 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 104,629 -169,030 -61.77 27,077 -68.06 0.0458
2025-11-24 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 273,659 -34,013 -11.05 84,763 -13.94 0.1451
2025-08-12 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 307,672 2,472 0.81 98,492 3.59 0.1759
2025-05-14 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 305,200 186,209 156.49 95,079 179.87 0.2008
2025-02-12 2024-12-31 13F Arthur J Gallagher COM 363576109 118,991 -2,424 -2.00 33,972 -0.56 0.0616
2024-11-13 2024-09-30 13F Arthur J Gallagher COM 363576109 121,415 109,243 897.49 34,162 961.26 0.0612
2024-08-09 2024-06-30 13F Arthur J Gallagher COM 363576109 12,172 181 1.51 3,220 8.64 0.0060
2024-05-10 2024-03-31 13F Arthur J Gallagher COM 363576109 11,991 90 0.76 2,964 10.72 0.0058
2024-02-13 2023-12-31 13F GALLAGHER ARTHUR J & CO COM COM 363576109 11,901 702 6.27 2,676 4.86 0.0057
2023-11-13 2023-09-30 13F GALLAGHER ARTHUR J & CO COM COM 363576109 11,199 8,931 393.78 2,553 413.48 0.0060
2023-11-21 2023-06-30 13F/A-1 GALLAGHER ARTHUR J & CO COM COM 363576109 2,268 -32 -1.39 498 12.95 0.0011
2023-08-10 2023-06-30 13F GALLAGHER ARTHUR J & CO COM COM 363576109 2,268 -32 498 0.0011
2023-11-21 2023-03-31 13F/A-1 ARTHUR J GALLAGHER COM 363576109 2,300 757 49.06 440 51.72 0.0010
2023-05-12 2023-03-31 13F ARTHUR J GALLAGHER COM 363576109 2,300 757 440 0.0010
2023-02-14 2022-12-31 13F/A-1 GALLAGHER ARTHUR J & CO COM COM 363576109 1,543 0 0.00 291 9.85 0.0007
2023-02-13 2022-12-31 13F GALLAGHER ARTHUR J & CO COM COM 363576109 1,543 0 291 0.0000
2022-11-15 2022-09-30 13F GALLAGHER ARTHUR J & CO COM COM 363576109 1,543 -1,312 -45.95 264 -43.23 0.0007
2022-08-03 2022-06-30 13F GALLAGHER ARTHUR J COM 363576109 2,855 26 0.92 465 -5.87 0.0012
2022-05-16 2022-03-31 13F GALLAGHER ARTHUR J COM 363576109 2,829 42 1.51 494 4.44 0.0011
2022-04-04 2021-12-31 13F/A-1 GALLAGHER ARTHUR J COM 363576109 2,787 2,787 473 0.0010
2022-02-08 2021-12-31 13F GALLAGHER ARTHUR J COM 363576109 2,787 2,787 473 0.0010
2021-11-12 2021-09-30 13F GALLAGHER ARTHUR J COM 363576109 0 -1,500 -100.00 0 -100.00
2021-08-16 2021-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,500 -500 -25.00 210 -16.00 0.0005
2021-05-12 2021-03-31 13F GALLAGHER ARTHUR J COM 363576109 2,000 0 0.00 250 1.21 0.0006
2021-02-12 2020-12-31 13F GALLAGHER ARTHUR J COM 363576109 2,000 0 0.00 247 17.06 0.0007
2020-10-29 2020-09-30 13F GALLAGHER ARTHUR J. COMMON STOCK, R 363576109 2,000 2,000 211 0.0382
2018-11-14 2018-09-30 13F GALLAGHER ARTHUR J COM 363576109 0 -591 -100.00 0 -100.00
2018-08-02 2018-06-30 13F GALLAGHER ARTHUR J COM 363576109 591 -533 -47.42 39 -49.35 0.0002
2018-05-17 2018-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,124 527 88.27 77 102.63 0.0003
2018-02-12 2017-12-31 13F GALLAGHER ARTHUR J COM 363576109 597 597 38 0.0002
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.