Form 8-K

8-K — Arthur J. Gallagher & Co.

Accession: 0001628280-26-051070

Filed: 2026-07-30

Period: 2026-07-30

CIK: 0000354190

SIC: 6411 (INSURANCE AGENTS BROKERS & SERVICES)

Item: Results of Operations and Financial Condition

Item: Regulation FD Disclosure

Documents

8-K — ajg-20260730.htm (Primary)

EX-99.1 (a2ndquarter2026earningsrel.htm)

GRAPHIC (image.jpg)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: ajg-20260730.htm · Sequence: 1

ajg-20260730

0000354190false00003541902026-07-302026-07-30

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

__________________________

Form 8-K

__________________________

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

July 30, 2026

Date of Report: (Date of earliest event reported)

__________________________

ARTHUR J. GALLAGHER & CO.

(Exact name of registrant as specified in its charter)

__________________________

Delaware 1-09761 36-2151613

(State or other jurisdiction of

incorporation or organization) (Commission

File Number) (I.R.S. Employer

Identification Number)

2850 Golf Road, Rolling Meadows, Illinois 60008, (630) 773-3800

(Address, including zip code and telephone number, including area code, of registrant’s principal executive offices)

Not Applicable

(Former name or former address, if changed since last report)

__________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading

Symbol(s) Name of each exchange

on which registered

Common Stock, $1.00 par value AJG New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition

On July 30, 2026, Arthur J. Gallagher & Co. (the Company) issued a press release setting forth the Company’s financial results for the quarter ended June 30, 2026 (the Earnings Release). A copy of the Earnings Release is attached hereto as Exhibit 99.1.

Item 7.01. Regulation FD Disclosure

In connection with the filing of the Earnings Release, the Company made materials entitled “Supplemental Quarterly Data” and “CFO Commentary” available through the investor relations page of its website. The CFO Commentary includes certain estimates relating to 2026 and other future results.

Item 9.01. Financial Statements and Exhibits

99.1

Press release, dated July 30, 2026, issued by Arthur J. Gallagher & Co.

104 The cover page from this Current Report on Form 8-K, formatted in Inline XBRL.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

ARTHUR J. GALLAGHER & CO.

Date: July 30, 2026 By:

/s/ Douglas K. Howell

Douglas K. Howell

Vice President and Chief Financial Officer

EX-99.1

Filename: a2ndquarter2026earningsrel.htm · Sequence: 2

Document

Exhibit 99.1

NEWS RELEASE

ARTHUR J. GALLAGHER & CO. ANNOUNCES

SECOND QUARTER 2026 FINANCIAL RESULTS

ROLLING MEADOWS, IL, July 30, 2026 — Arthur J. Gallagher & Co. (NYSE: AJG) today reported its financial results for the quarter ended June 30, 2026. Management will host a webcast conference call to discuss these results on Thursday, July 30, 2026 at 5:15 p.m. ET/4:15 p.m. CT. To listen to the call, and for printer-friendly formats of this release, the “CFO Commentary” and “Supplemental Quarterly Data,” which may also be referenced during the call, please visit ajg.com/IR. These documents contain both GAAP and non-GAAP measures. Investors and other users of this information should read carefully the section entitled “Information Regarding Non-GAAP Measures” beginning on page 9.

Summary of Financial Results - Second Quarter

Revenues Before

Reimbursements

Net Earnings (Loss) EBITDAC

Diluted Net Earnings

(Loss) Per Share

Segment

2nd Q 26 2nd Q 25 2nd Q 26 2nd Q 25 2nd Q 26 2nd Q 25 2nd Q 26 2nd Q 25

(in millions) (in millions) (in millions)

Brokerage, as reported $ 3,502 $ 2,787 $ 450 $ 510 $ 948 $ 892 $ 1.74 $ 1.95

Net (gains) on divestitures

(8) (6) (6) (5) (8) (6) (0.02) (0.02)

Acquisition integration

— — 84 30 113 41 0.33 0.12

Workforce and lease termination

— — 30 28 40 37 0.11 0.11

Acquisition related adjustments

— — 49 25 70 50 0.19 0.09

Amortization of intangible assets

— — 218 130 — — 0.84 0.50

Levelized foreign currency translation

– 1 — (7) — (9) — (0.03)

Brokerage, as adjusted 3,494 2,782 825 711 1,163 1,005 3.19 2.72

Risk Management, as reported

453 392 57 43 96 75 0.22 0.16

Acquisition integration

— — 1 1 1 2 – 0.01

Workforce and lease termination

— — 1 3 2 4 0.01 0.01

Acquisition related adjustments

— — 2 1 2 1 0.01 —

Amortization of intangible assets

— — 5 5 — — 0.02 0.02

Levelized foreign currency translation

— 5 — 1 — 1 — —

Risk Management, as adjusted

453 397 66 54 101 83 0.26 0.20

Corporate, as reported

— — (183) (185) (98) (111) (0.71) (0.71)

Transaction-related costs

— — 10 24 12 29 0.04 0.09

Legal, tax and benefit plan related

— — 16 — 21 — 0.06 —

Corporate, as adjusted — — (157) (161) (65) (82) (0.61) (0.62)

Total Company, as reported $ 3,955 $ 3,179 $ 324 $ 368 $ 946 $ 856 $ 1.25 $ 1.40

Total Company, as adjusted $ 3,947 $ 3,179 $ 734 $ 604 $ 1,199 $ 1,006 $ 2.84 $ 2.30

Total Brokerage & Risk Management, as reported

$ 3,955 $ 3,179 $ 507 $ 553 $ 1,044 $ 967 $ 1.96 $ 2.11

Total Brokerage & Risk Management, as adjusted

$ 3,947 $ 3,179 $ 891 $ 765 $ 1,264 $ 1,088 $ 3.45 $ 2.92

For second quarter 2025, reported and adjusted amounts for the Brokerage Segment include approximately $144 million of incremental interest income, or approximately 42 cents after-tax, earned on the cash proceeds associated with the AssuredPartners Financing in December 2024.

For second quarter 2026, the pretax impact of adjustments for the Brokerage, Risk Management, and Corporate Segments totals $505 million, $12 million and $33 million, respectively, and corresponding adjustment to the provision (benefit) for income taxes was $130 million, $3 million and ($7) million, respectively, relating to these adjustments. A detailed reconciliation is shown on page 17.

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“We delivered an excellent second quarter!” said J. Patrick Gallagher, Jr., Chairman and CEO. “Our combined Brokerage and Risk Management segments delivered revenue growth of 24%, including organic growth of 6%. Our growth reflects the strength and diversity of our model, the continued power of our two-pronged growth strategy, and our culture of client-first execution. Client retention remains strong, new business generation continues to be outstanding and clients continue to seek broader solutions across our platform.

“In an increasingly complex risk environment, client demand for our advice, analytics, market access, specialty expertise and claims advocacy remains robust. Looking ahead, we remain confident in our ability to build on our momentum and continue creating long-term value for our clients, colleagues and shareholders.”

Summary of Financial Results - Six-Months ended June 30

Revenues Before

Reimbursements

Net Earnings (Loss) EBITDAC

Diluted Net Earnings

(Loss) Per Share

Segment

6 Mths 26 6 Mths 25 6 Mths 26 6 Mths 25 6 Mths 26 6 Mths 25 6 Mths 26 6 Mths 25

(in millions)

Brokerage, as reported

$ 7,795 $ 6,101 $ 1,363 $ 1,326 $ 2,510 $ 948 $ 2,243 $ 5.25 $ 5.08

Net (gains) on divestitures

(15) (12) (11) (9) (15) (12) (0.04) (0.04)

Acquisition integration

— — 149 63 200 85 0.57 0.24

Workforce and lease termination

— — 50 42 67 55 0.19 0.16

Acquisition related adjustments

— — 88 50 120 80 0.34 0.19

Amortization of intangible assets

— — 419 282 — — 1.62 1.09

Effective income tax rate impact

— — — 1 — — — —

Levelized foreign currency translation

— 58 — 6 — 10 — 0.03

Brokerage, as adjusted

7,780 6,147 2,058 1,761 2,882 2,461 7.93 6.75

Risk Management, as reported

881 766 107 84 182 147 0.41 0.32

Acquisition integration

— — 2 2 2 4 0.01 0.01

Workforce and lease termination

— — 2 6 3 7 0.01 0.02

Acquisition related adjustments

— — 6 1 8 1 0.02 —

Amortization of intangible assets

— — 10 9 — — 0.04 0.04

Levelized foreign currency translation

— 12 — 2 — 2 — 0.01

Risk Management, as adjusted

881 778 127 104 195 161 0.49 0.40

Corporate, as reported

(5) — (323) (333) (189) (233) (1.25) (1.28)

Transaction-related costs

— — 16 44 19 52 0.06 0.17

Legal, tax and benefit plan related

— — 17 — 39 — 0.07 —

Clean energy-related 5 — 3 — 5 — 0.01 —

Corporate, as adjusted

— — (287) (289) (126) (181) (1.11) (1.11)

Total Company, as reported

$ 8,671 $ 6,867 $ 1,147 $ 1,077 $ 2,503 $ 2,157 $ 4.41 $ 4.12

Total Company, as adjusted

$ 8,661 $ 6,925 $ 1,898 $ 1,576 $ 2,951 $ 2,441 $ 7.31 $ 6.04

Total Brokerage & Risk Management, as reported

$ 8,676 $ 6,867 $ 1,470 $ 1,410 $ 2,692 $ 2,390 $ 5.66 $ 5.40

Total Brokerage & Risk Management, as adjusted

$ 8,661 $ 6,925 $ 2,185 $ 1,865 $ 3,077 $ 2,622 $ 8.42 $ 7.15

For the six-month period ended June 30, 2026, the pretax impact of adjustments for the Brokerage, Risk Management, and Corporate Segments totals $936 million, $27 million and $63 million, respectively, and corresponding adjustment to the provision (benefit) for income taxes was $241 million, $7 million and ($27) million, respectively, relating to these adjustments. A detailed reconciliation is shown on page 19.

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Brokerage Segment Reported GAAP to Adjusted Non-GAAP Reconciliations (dollars in millions):

See “Information Regarding Non-GAAP Measures” beginning on page 9 of 20.

Organic Revenues (Non-GAAP)

2nd Q 26 2nd Q 25 6 Mths 26 6 Mths 25

Base Commissions and Fees

Commissions and fees, as reported

$ 3,180 $ 2,387 $ 7,095 $ 5,256

Less commissions and fees from acquisitions, divested operations and other

(775) (80) (1,712) (144)

Levelized foreign currency translation

— (1) — 51

Organic base commissions and fees

$ 2,405 $ 2,306 $ 5,383 $ 5,163

Organic change in base commissions and fees

4 % 4 %

Supplemental Revenues

Supplemental revenues, as reported

$ 141 $ 103 $ 321 $ 217

Less supplemental revenues from acquisitions, divested operations and other

(17) — (63) —

Levelized foreign currency translation

— — — 2

Organic supplemental revenues

$ 124 $ 103 $ 258 $ 219

Organic change in supplemental revenues

20 % 18 %

Contingent Revenues

Contingent revenues, as reported

$ 91 $ 73 $ 206 $ 166

Less contingent revenues from acquisitions, divested operations and other

(24) — (43) —

Levelized foreign currency translation

— — — 1

Organic contingent revenues

$ 67 $ 73 $ 163 $ 167

Organic change in contingent revenues

(8 %) (2 %)

Total reported commissions, fees, supplemental

revenues and contingent revenues

$ 3,412 $ 2,563 $ 7,622 $ 5,639

Less commissions, fees, supplemental revenues and contingent revenues from acquisitions, divested operations and other

(816) (80) (1,818) (144)

Levelized foreign currency translation

— (1) — 54

Total organic commissions, fees, supplemental revenues and contingent revenues

$ 2,596 $ 2,482 $ 5,804 $ 5,549

Total organic change

5 % 5 %

Acquisition Activity

2nd Q 26 2nd Q 25 6 Mths 26 6 Mths 25

Number of acquisitions closed *

6 9 14 19

Estimated annualized revenues acquired (in millions)

$ 58 $ 291 $ 107 $ 354

* In the second quarter of 2026 and 2025, no shares of Gallagher common stock were issued directly to sellers in connection with tax-free exchange acquisitions.

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Brokerage Segment Reported GAAP to Adjusted Non-GAAP Reconciliations (continued) (dollars in millions):

See “Information Regarding Non-GAAP Measures” beginning on page 9 of 20.

Compensation Expense and Ratios 2nd Q 26 2nd Q 25 6 Mths 26 6 Mths 25

Compensation expense, as reported $ 2,017 $ 1,526 $ 4,228 $ 3,143

Acquisition integration (53) (20) (90) (48)

Workforce and lease termination related charges (29) (36) (53) (52)

Acquisition related adjustments (70) (50) (120) (80)

Levelized foreign currency translation — 8 — 37

Compensation expense, as adjusted $ 1,865 $ 1,428 $ 3,965 $ 3,000

Reported compensation expense ratios using reported revenues on pages 1 and 2

57.6 % 54.8 % 54.2 % 51.5 %

Adjusted compensation expense ratios using adjusted revenues on pages 1 and 2

53.4 % 51.3 % 51.0 % 48.8 %

* Reported second quarter 2026 compensation expense ratio was 2.8 pts higher than second quarter 2025. This ratio was primarily impacted by lower interest income revenues in the quarter, as second quarter 2025 included interest income earned on cash proceeds associated with the AssuredPartners Financing in December 2024. This ratio was also impacted by higher integration costs, partially offset by lower workforce termination costs and savings from headcount controls.

** Adjusted second quarter 2026 compensation expense ratio was 2.1 pts higher than second quarter 2025. This ratio was primarily impacted by lower interest income revenues in the quarter, as second quarter 2025 included interest income earned on cash proceeds associated with the AssuredPartners Financing in December 2024. This ratio also benefited from savings from headcount controls.

Operating Expense and Ratios

2nd Q 26 2nd Q 25 6 Mths 26 6 Mths 25

Operating expense, as reported

$ 537 $ 369 $ 1,057 $ 715

Acquisition integration

(60) (21) (110) (37)

Workforce and lease termination related charges

(11) (1) (14) (3)

Levelized foreign currency translation

— 2 — 11

Operating expense, as adjusted

$ 466 $ 349 $ 933 $ 686

Reported operating expense ratios using reported revenues on pages 1 and 2

15.3 % 13.2 % 13.6 % 11.7 %

Adjusted operating expense ratios using adjusted revenues on pages 1 and 2

13.3 % 12.5 % 12.0 % 11.2 %

* Reported second quarter 2026 operating expense ratio was 2.1 pts higher than second quarter 2025. This ratio was primarily impacted by higher integration and technology costs. This ratio was also impacted by lower interest income revenues in the quarter, as second quarter 2025 included interest income earned on cash proceeds associated with the AssuredPartners Financing in December 2024.

** Adjusted second quarter 2026 operating expense ratio was 0.8 pts higher than second quarter 2025. This ratio was primarily impacted by lower interest income revenues in the quarter, as second quarter 2025 included interest income earned on cash proceeds associated with the AssuredPartners Financing in December 2024. This ratio was also impacted by higher technology costs.

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Brokerage Segment Reported GAAP to Adjusted Non-GAAP Reconciliations (continued) (dollars in millions):

See “Information Regarding Non-GAAP Measures” beginning on page 9 of 20.

Net Earnings to Adjusted EBITDAC (Non-GAAP) 2nd Q 26 2nd Q 25 6 Mths 26 6 Mths 25

Net earnings, as reported $ 450 $ 510 $ 1,363 $ 1,326

Provision for income taxes 154 176 467 459

Depreciation 45 38 94 71

Amortization 294 174 565 378

Change in estimated acquisition earnout payables 5 (6) 21 9

EBITDAC 948 892 2,510 2,243

Net (gains) on divestitures (8) (6) (15) (12)

Acquisition integration 113 41 200 85

Workforce and lease termination related charges 40 37 67 55

Acquisition related adjustments 70 50 120 80

Levelized foreign currency translation — (9) — 10

EBITDAC, as adjusted $ 1,163 $ 1,005 $ 2,882 $ 2,461

Net earnings margin, as reported using reported revenues on pages 1 and 2

12.9 % 18.3 % 17.5 % 21.7 %

EBITDAC margin, as adjusted using adjusted revenues on pages 1 and 2

33.3 % 36.1 %

37.0 % 40.0 %

* Second quarter 2025 adjusted EBITDAC includes approximately $144 million of interest income revenues earned on the cash proceeds associated with the AssuredPartners Financing in December 2024. The interest income in the prior period, as well as the seasonality of AssuredPartners and the roll-in of tuck-in acquisitions, unfavorably impacted the year over year change in second quarter adjusted EBITDAC margin by approximately 3.9%.

** Adjusted EBITDAC for the six-month period ended June 30, 2025 includes approximately $287 million of interest income revenues earned on the cash proceeds associated with the AssuredPartners Financing in December 2024. The interest income in the prior year, as well as the seasonality of AssuredPartners and the roll-in of tuck-in acquisitions, unfavorably impacted the year over year change in adjusted EBITDAC margin for the six-month period ended June 30, by approximately 3.4%.

Risk Management Segment Reported GAAP to Adjusted Non-GAAP Reconciliations (dollars in millions):

See “Information Regarding Non-GAAP Measures” beginning on page 9 of 20.

Organic Revenues (Non-GAAP)

2nd Q 26 2nd Q 25 6 Mths 26 6 Mths 25

Fees

$ 438 $ 382 $ 853 $ 745

International performance bonus fees

7 1 12 3

Fees as reported

445 383 865 748

Less fees from acquisitions, divestitures and other

(11) (1) (24) (2)

Levelized foreign currency translation

— 5 — 12

Organic fees

$ 434 $ 387 $ 841 $ 758

Organic change in fees

12 % 11 %

Acquisition Activity

2nd Q 26 2nd Q 25 6 Mths 26 6 Mths 25

Number of acquisitions closed

1 — 2 1

Estimated annualized revenues acquired (in millions)

$ 5 $ — $ 15 $ 38

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Risk Management Segment Reported GAAP to Adjusted Non-GAAP Reconciliations (continued) (dollars in millions):

See “Information Regarding Non-GAAP Measures” beginning on page 9 of 20.

Compensation Expense and Ratios

2nd Q 26 2nd Q 25 6 Mths 26 6 Mths 25

Compensation expense, as reported

$ 274 $ 244 $ 538 $ 475

Acquisition integration

— (1) — (2)

Workforce and lease termination related charges

(2) (3) (3) (6)

Acquisition related adjustments

(2) (1) (8) (1)

Levelized foreign currency translation

— 4 — 9

Compensation expense, as adjusted

$ 270 $ 243 $ 527 $ 475

Reported compensation expense ratios using reported revenues (before reimbursements) on pages 1 and 2

60.5 % 62.2 % 61.1 % 62.0 %

Adjusted compensation expense ratios using adjusted revenues (before reimbursements) on pages 1 and 2

59.6 % 61.2 % 59.8 % 61.1 %

* Reported and adjusted second quarter 2026 compensation expense ratios were 1.7 pts and 1.6 pts lower, respectively, than second quarter 2025. Both ratios were primarily impacted by savings related to headcount controls.

Operating Expense and Ratios

2nd Q 26 2nd Q 25 6 Mths 26 6 Mths 25

Operating expense, as reported

$ 83 $ 73 $ 161 $ 144

Acquisition integration

(1) (1) (2) (2)

Workforce and lease termination related charges

— (1) — (1)

Levelized foreign currency translation

— — — 1

Operating expense, as adjusted

$ 82 $ 71 $ 159 $ 142

Reported operating expense ratios using reported revenues (before reimbursements) on pages 1 and 2

18.3 % 18.6 % 18.3 % 18.8 %

Adjusted operating expense ratios using adjusted revenues (before reimbursements) on pages 1 and 2

18.1 % 18.2 % 18.1 % 18.2 %

* Reported and adjusted second quarter 2026 operating expense ratios were 0.3 pts and 0.1 pts lower, respectively, than second quarter 2025. Both ratios were primarily impacted by savings in client-related expenses.

Net Earnings to Adjusted EBITDAC (Non-GAAP)

2nd Q 26 2nd Q 25 6 Mths 26 6 Mths 25

Net earnings, as reported

$ 57

$ 43

$ 107

$ 84

Provision for income taxes

Depreciation

Amortization

Change in estimated acquisition earnout payables

EBITDAC

182

147

Acquisition integration

Workforce and lease termination related charges

Acquisition related adjustments

Levelized foreign currency translation

—

EBITDAC, as adjusted

$ 101

$ 83

$ 195

$ 161

Net earnings margin, as reported using reported revenues (before reimbursements) on pages 1 and 2

12.6 %

11.0 %

12.2 %

11.0 %

EBITDAC margin, as adjusted using adjusted revenues (before reimbursements) on pages 1 and 2

22.3 %

20.9 %

22.1 %

20.7 %

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Corporate Segment Reported GAAP to Adjusted Non-GAAP Reconciliation Information (dollars in millions):

See “Information Regarding Non-GAAP Measures” beginning on page 9 of 20.

2nd Quarter

2026 2025

Pretax

Loss Income

Tax

Benefit Net Earnings

(Loss)

Attributable to

Controlling

Interests Pretax

Loss Income

Tax

Benefit Net Earnings

(Loss)

Attributable to

Controlling

Interests

Components of Corporate Segment, as reported

Interest and banking costs $ (169) $ 44 $ (125) $ (159) $ 41 $ (118)

Clean energy-related (2) 1 (1) (2) — (2)

Acquisition costs (1) (18) 3 (15) (34) 6 (28)

Corporate (2) (79) 37 (42) (76) 39 (37)

Reported 2nd quarter

(268) 85 (183) (271) 86 (185)

Adjustments

Transaction-related costs (1) 12 (2) 10 29 (5) 24

Legal and tax related (4) 13 (3) 10 — — —

Benefit plan related (5) 8 (2) 6 — — —

Components of Corporate Segment, as adjusted

Interest and banking costs (169) 44 (125) (159) 41 (118)

Clean energy-related (2) 1 (1) (2) — (2)

Acquisition costs (6) 1 (5) (5) 1 (4)

Corporate (2) (58) 32 (26) (76) 39 (37)

Adjusted 2nd quarter

$ (235) $ 78 $ (157) $ (242) $ 81 $ (161)

Six Months

Components of Corporate Segment, as reported

Interest and banking costs

$ (327) $ 85 $ (242) $ (318) $ 83 $ (235)

Clean energy-related

(9) 3 (6) (4) 1 (3)

Acquisition costs (1)

(28) 5 (23) (60) 9 (51)

Corporate (2)

(155) 103 (52) (171) 127 (44)

Reported six months

(519) 196 (323) (553) 220 (333)

Adjustments

Clean energy-related (3) 5 (2) 3 — — —

Transaction-related costs (1)

19 (3) 16 52 (8) 44

Legal and tax related (4) 31 (20) 11 — — —

Benefit plan related (5)

8 (2) 6 — — —

Components of Corporate Segment, as adjusted

Interest and banking costs

(327) 85 (242) (318) 83 (235)

Clean energy-related

(4) 1 (3) (4) 1 (3)

Acquisition costs

(9) 2 (7) (8) 1 (7)

Corporate (2)

(116) 81 (35) (171) 127 (44)

Adjusted six months

$ (456) $ 169 $ (287) $ (501) $ 212 $ (289)

(1)Gallagher incurred transaction-related costs, which include legal, consulting, employee compensation and other professional fees associated with completed, future and terminated acquisitions. Adjustments primarily relate to the acquisitions of AssuredPartners and Woodruff Sawyer, which closed in August 2025 and April 2025, respectively.

(2)Corporate pretax loss includes a net unrealized foreign exchange remeasurement loss of $(25) million in second quarter 2025. There was no net impact of unrealized foreign exchange remeasurement in second quarter 2026. Corporate pretax loss includes a net unrealized foreign exchange remeasurement gain of $6 million in the six-month

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period ended June 30, 2026 and a net unrealized foreign exchange remeasurement loss of $(48) million in the six-month period ended June 30, 2025.

(3)Adjustments in the six-month period ended June 30, 2026 include the write-down of a clean energy-related investment.

(4)Adjustments in second quarter 2026 and the six-month period ended June 30, 2026 include costs associated with legal and tax matters.

(5)Adjustments in second quarter 2026 and the six-month period ended June 30, 2026 include costs associated with the termination of the Gallagher US defined pension plan and other benefit plan changes.

Interest, banking costs and debt - At June 30, 2026, Gallagher had $9,550 million of borrowings from public debt, $2,683 million of borrowings from private placements and $1,365 million of borrowings under its line of credit facility. In addition, Gallagher had $134 million outstanding under a revolving loan facility that provides funding for premium finance receivables, which are fully collateralized by the underlying premiums held by insurance carriers, and as such are excluded from its debt covenant computations, as applicable.

Clean energy-related - For 2026, this consists of operating results related to Gallagher’s investments in new clean energy projects, primarily fusion and carbon sequestration projects.

Acquisition costs - Consists mostly of external professional fees and other due diligence costs related to acquisitions. On occasion, Gallagher enters into forward currency hedges for the purchase price of committed, but not yet funded, acquisitions with funding requirements in currencies other than the U.S. dollar. The gains or losses, if any, associated with these hedge transactions are also included in acquisition costs.

Corporate - Consists of overhead allocations mostly related to corporate staff compensation, other corporate level activities, and net unrealized foreign exchange remeasurement. In addition, it includes the tax expense related to the partial taxation of foreign earnings, nondeductible executive compensation and entertainment expenses, the tax benefit from the vesting of employee equity awards, as well as other permanent or discrete tax items not reflected in the provision for income taxes in the Brokerage and Risk Management segments.

Income Taxes - Gallagher allocates the provision for income taxes to its Brokerage and Risk Management segments using the local country statutory rates. Gallagher’s consolidated effective tax rates for the quarters ended June 30, 2026 and 2025 were 21.7% and 22.3%, respectively.

AssuredPartners - In fourth quarter 2024 and first quarter 2025, we raised a total of approximately $14 billion of cash via a follow-on common stock offering and senior notes issuance to fund the AssuredPartners acquisition (collectively, the AssuredPartners Financing), which was completed in third quarter 2025 for approximately $14 billion.

Share Repurchases - In the second quarter of 2026, Gallagher repurchased approximately 0.9 million shares of its common stock for approximately $170 million.

Webcast Conference Call - Gallagher will host a webcast conference call on Thursday, July 30, 2026 at 5:15 p.m. ET/4:15 p.m. CT. To listen to this call, please go to Arthur J. Gallagher & Co. - Events & Presentations (ajg.com). The call will be available for replay at such website for at least 90 days.

About Arthur J. Gallagher & Co.

Arthur J. Gallagher & Co., a global insurance brokerage, risk management and consulting services firm, is headquartered in Rolling Meadows, Illinois. Gallagher provides these services in approximately 130 countries around the world through its owned operations and a network of correspondent brokers and consultants.

Information Concerning Forward-Looking Statements

This press release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. When used in this press release, the words “anticipates,” “believes,” “contemplates,” “see,” “should,” “could,” “will,” “estimates,” “expects,” “intends,” “plans” and variations thereof and similar expressions, are intended to identify forward-looking statements. Examples of forward-looking statements include, but are not limited to, anticipated future results or performance of any segment or Gallagher as a whole; acquisition rollover revenues; statements regarding changes in its expenses in the next several quarters; future capital structure changes, including debt levels from time to time; the impact of foreign currency on its results; integration costs; workforce and lease termination costs; amortization of intangibles; depreciation; change in estimated earnout payables; effective tax rate; earnings from continuing operations attributable to noncontrolling interests; the premium rate environment and the state of insurance markets; and the economic environment.

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Gallagher’s actual results may differ materially from those contemplated by the forward-looking statements. Readers are therefore cautioned against relying on any of the forward-looking statements, which are neither statements of historical fact nor guarantees or assurances of future performance.

Important factors that could cause actual results to differ materially from those in the forward-looking statements include global economic and geopolitical events, including, among others, fluctuations in interest and inflation rates; protectionism such as tariffs and trade disruptions; a recession or economic downturn; a U.S. government shutdown; political instability, such as global armed conflicts; its actual acquisition opportunities, including closing risks related to pending acquisitions; risks with respect to larger acquisitions such as AssuredPartners, the largest acquisition in its history, including risks related to its ability to successfully integrate operations and the possibility that its assumptions may be inaccurate resulting in unforeseen obligations or liabilities and failure to realize expected benefits of such acquisitions; damage to its reputation due to its failure to uphold its culture or negative perceptions or publicity, including as a result of amplifying effects that the Internet and social media may have on such perceptions; reputational issues related to its sustainability-related activities, including potential backlash against such activities, and compliance with increasingly complex climate- and other sustainability-related regulations, such as risks related to “greenwashing” and “greenhushing”; cybersecurity-related risks; its ability to apply technology, data analytics and artificial intelligence effectively to its business and potential increased costs resulting from such activities; risks associated with the use of artificial intelligence in its business operations, including regulatory, data privacy, cybersecurity, errors and omissions, intellectual property and competition risks; risks related to “AI-washing”; heightened competition for talent and increased compensation costs; disasters or other business interruptions, including with respect to its operations in India; risks related to its international operations, such as those related to regulatory, tax, sustainability, sanctions and anti-corruption compliance and increased scrutiny of the use of off-shore centers of excellence such as those we operate in India and elsewhere; changes to data privacy and protection laws and regulations; foreign exchange rates; changes in accounting standards; changes in premium rates and in insurance markets generally, including the impact of large natural or man-made events; tax, environmental or other compliance risks related to its legacy clean energy investments; its inability to receive dividends or other distributions from subsidiaries; and changes in the insurance brokerage industry’s competitive landscape.

Please refer to Gallagher’s filings with the Securities and Exchange Commission, including Item 1A, “Risk Factors,” of its Annual Report on Form 10-K for the fiscal year ended December 31, 2025 and its subsequently filed Quarterly Reports on Form 10-Q for a more detailed discussion of these and other factors that could impact its forward-looking statements. Any forward-looking statement made by Gallagher in this press release speaks only as of the date on which it is made. Except as required by applicable law, Gallagher does not undertake to update the information included herein or the corresponding earnings release posted on Gallagher’s website.

Information Regarding Non-GAAP Measures

In addition to reporting financial results in accordance with GAAP, this press release provides information regarding EBITDAC, EBITDAC margin, adjusted EBITDAC, adjusted EBITDAC margin, diluted net earnings per share, as adjusted (adjusted EPS), adjusted revenue, adjusted compensation and operating expenses, adjusted compensation expense ratio, adjusted operating expense ratio and organic revenue. These measures are not in accordance with, or an alternative to, the GAAP information provided in this press release. Gallagher’s management believes that these presentations provide useful information to management, analysts and investors regarding financial and business trends relating to Gallagher’s results of operations and financial condition or because they provide investors with measures that its chief operating decision maker uses when reviewing Gallagher’s performance. See further below for definitions and additional reasons each of these measures is useful to investors. Gallagher’s industry peers may provide similar supplemental non-GAAP information with respect to one or more of these measures, although they may not use the same or comparable terminology and may not make identical adjustments. The non-GAAP information provided by Gallagher should be used in addition to, but not as a substitute for, the GAAP information provided. As disclosed in its most recent Proxy Statement, Gallagher makes determinations regarding certain elements of executive officer incentive compensation, performance share awards and annual cash incentive awards, partly on the basis of measures related to adjusted EBITDAC.

Adjusted Non-GAAP presentation - Gallagher believes that the adjusted non-GAAP presentations of the current and prior period information presented in this earnings release provide stockholders and other interested persons with useful information regarding certain financial metrics of Gallagher that may assist such persons in analyzing Gallagher’s operating results as they develop a future earnings outlook for Gallagher. The after-tax amounts related to the adjustments were computed using the normalized effective tax rate for each respective period. See pages 17, 18, 19 and 20 for a reconciliation of the adjustments made to income taxes.

Adjusted measures - Revenues (for the Brokerage segment), revenues before reimbursements (for the Risk Management segment), net earnings, compensation expense and operating expense, respectively, each adjusted to exclude the following, as applicable:

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•Net gains (losses) on divestitures, which are primarily net proceeds received related to sales of books of business and other divestiture transactions, such as the disposal of a business through sale or closure.

•Acquisition integration costs, which include costs related to certain large acquisitions (including the acquisitions of the Willis Towers Watson treaty reinsurance brokerage operations, Buck, Cadence Insurance, Eastern Insurance Group, My Plan Manager, Woodruff Sawyer and AssuredPartners), outside the scope of the usual tuck-in strategy, not expected to occur on an ongoing basis in the future once Gallagher fully assimilates the applicable acquisition. These costs are typically associated with redundant workforce, compensation expense related to amortization of certain retention bonus arrangements, extra lease space, duplicate services and external costs incurred to assimilate the acquisition into its IT related systems.

•Transaction-related costs, which are associated with completed, future and terminated acquisitions. Costs primarily relate to the acquisitions of AssuredPartners and Woodruff Sawyer, which closed in August 2025 and April 2025, respectively. These include costs related to regulatory filings, legal and accounting services, insurance and incentive compensation.

•Workforce related charges, which primarily include severance costs (either accrued or paid) related to employee terminations and other costs associated with redundant workforce.

•Lease termination related charges, which primarily include costs related to terminations of real estate leases and abandonment of leased space.

•Acquisition related adjustments principally relate to changes in estimated acquisition earnout payables adjustments and acquisition related compensation charges. In addition, from time to time we may include changes in balance sheet estimates arising from conforming accounting principles, purchase-related true-ups and other balance sheet adjustments made after the closing date.

•Amortization of intangible assets, which reflects the amortization of customer/expiration lists, non-compete agreements, trade names and other intangible assets acquired through Gallagher’s merger and acquisition strategy, the impact to amortization expense of acquisition valuation adjustments to these assets as well as non-cash impairment charges.

•The impact of foreign currency translation, as applicable. The amounts excluded with respect to foreign currency translation are calculated by applying current year foreign exchange rates to the same period in the prior year.

•Effective income tax rate impact, which levelized the prior year for the change in current year tax rates.

•Clean energy-related, which represents the impact of adjustments in first quarter 2026 related to the write-down of a clean energy-related investment.

•Legal and tax related, which represents the impact of adjustments in second quarter 2026 related to costs associated with legal and tax matters.

•Benefit plan related, which represents the impact of adjustments in second quarter 2026 related to costs associated with the termination of the Gallagher US defined pension plan and other benefit plan changes.

Adjusted ratios - Adjusted compensation expense and adjusted operating expense, respectively, each divided by adjusted revenues.

Non-GAAP Earnings Measures

•EBITDAC and EBITDAC margin - EBITDAC is net earnings before interest, income taxes, depreciation, amortization and the change in estimated acquisition earnout payables and EBITDAC margin is EBITDAC divided by total revenues (for the Brokerage segment) and revenues before reimbursements (for the Risk Management segment). These measures for the Brokerage and Risk Management segments provide a meaningful representation of Gallagher’s operating performance for the overall business and provide a meaningful way to measure its financial performance on an ongoing basis.

•EBITDAC, as Adjusted and EBITDAC Margin, as Adjusted - Adjusted EBITDAC is EBITDAC adjusted to exclude net gains on divestitures, acquisition integration costs, workforce related charges, lease termination related charges, acquisition related adjustments, transaction related costs, and the period-over-period impact of foreign currency translation, as applicable, (and for the Corporate segment, the clean energy related adjustments described above) and Adjusted EBITDAC margin is Adjusted EBITDAC divided by total adjusted revenues (defined above). These measures for the Brokerage and Risk Management segments provide a meaningful representation of Gallagher’s operating performance and are also presented to improve the comparability of its results between periods by eliminating the impact of the items that have a high degree of variability.

•EPS, as Adjusted and Net Earnings, as Adjusted - Adjusted net earnings have been adjusted to exclude the after-tax impact of net gains on divestitures, acquisition integration costs, the impact of foreign currency translation, workforce related charges, lease termination related charges, acquisition related adjustments, transaction related costs, amortization of intangible assets, and effective income tax rate impact, as applicable. Adjusted EPS is Adjusted Net

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Earnings divided by diluted weighted average shares outstanding. This measure provides a meaningful representation of Gallagher’s operating performance (and as such should not be used as a measure of Gallagher’s liquidity), and for the overall business is also presented to improve the comparability of its results between periods by eliminating the impact of the items that have a high degree of variability.

Organic Revenues (a non-GAAP measure) - Organic revenue change measures the year-over-year percentage change in organic revenue. For the Brokerage segment, organic revenue consists of base commission and fee revenues, supplemental revenues and contingent revenues, excluding the first twelve months of such revenues generated from acquisitions and such revenues related to divested operations, which include disposals of a business through sale or closure, estimate changes, run-off of a business and the restructuring and/or repricing of programs and products, in each year presented. Such revenues are excluded from organic revenues in order to help interested persons analyze the revenue growth associated with the operations that were a part of Gallagher in both the current and prior period. In order to improve the comparability of Gallagher’s results between periods, we further exclude the period-over-period impact of foreign currency translation; revenue from certain large life product sales within Gallagher’s Executive Life and Benefits practice group (which are typically large singular transactions with a high degree of variability in amount and timing); and revenue attributable to changes in assumptions used to calculate estimated deferred revenues, which impact the quarterly timing of revenues during the annual contract period. For the Risk Management segment, organic revenue consists of fee revenues excluding the first twelve months of such revenues generated from acquisitions and such revenues related to divested operations in each period presented. In order to improve the comparability of Gallagher’s results between periods, we further exclude the period-over-period impact of foreign currency translation.

These revenue items are excluded from organic revenues in order to determine a comparable, but non-GAAP, measurement of revenue growth that is associated with the revenue sources that are expected to continue in the current year and beyond, as well as eliminating the impact of the items that have a high degree of variability. Gallagher has historically viewed organic revenue growth as an important indicator when assessing and evaluating the performance of its Brokerage and Risk Management segments. Gallagher also believes that using this non-GAAP measure allows readers of its financial statements to measure, analyze and compare the growth from its Brokerage and Risk Management segments in a meaningful and consistent manner.

Reconciliation of Non-GAAP Information Presented to GAAP Measures - This press release includes tabular reconciliations to the most comparable GAAP measures, as follows: for EBITDAC (on pages 5 and 6), for adjusted revenues, adjusted EBITDAC and adjusted diluted net earnings per share (on pages 1 and 2), for organic revenue measures (on pages 3 and 5, respectively, for the Brokerage and Risk Management segments), for adjusted compensation and operating expenses and adjusted EBITDAC margin (on pages 4, 5 and 6 respectively, for the Brokerage and Risk Management segments).

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Arthur J. Gallagher & Co.

Reported Statement of Earnings and EBITDAC - 2nd Quarter June 30,

(Unaudited - in millions except per share, percentage and workforce data)

Brokerage Segment 2nd Q Ended

June 30, 2026 2nd Q Ended

June 30, 2025 6 Mths Ended

June 30, 2026 6 Mths Ended

June 30, 2025

Commissions $ 2,442 $ 1,808 $ 5,565 $ 4,057

Fees 738 579 1,530 1,199

Supplemental revenues 141 103 321 217

Contingent revenues 91 73 206 166

Interest income, premium finance revenues and other income 90 224 173 462

Total revenues 3,502 2,787 7,795 6,101

Compensation 2,017 1,526 4,228 3,143

Operating 537 369 1,057 715

Depreciation 45 38 94 71

Amortization 294 174 565 378

Change in estimated acquisition earnout payables 5 (6) 21 9

Expenses 2,898 2,101 5,965 4,316

Earnings before income taxes 604 686 1,830 1,785

Provision for income taxes 154 176 467 459

Net earnings 450 510 1,363 1,326

Net earnings attributable to noncontrolling interests — — 1 5

Net earnings attributable to controlling interests $ 450 $ 510 $ 1,362 $ 1,321

EBITDAC

Net earnings $ 450 $ 510 $ 1,363 $ 1,326

Provision for income taxes 154 176 467 459

Depreciation 45 38 94 71

Amortization 294 174 565 378

Change in estimated acquisition earnout payables 5 (6) 21 9

EBITDAC $ 948 $ 892 $ 2,510 $ 2,243

See "Information Regarding Non-GAAP Measures" beginning on page 9 of 20.

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Arthur J. Gallagher & Co.

Reported Statement of Earnings and EBITDAC - 2nd Quarter June 30,

(Unaudited - in millions except per share, percentage and workforce data)

Risk Management Segment 2nd Q Ended

June 30, 2026 2nd Q Ended

June 30, 2025 6 Mths Ended

June 30, 2026 6 Mths Ended

June 30, 2025

Fees $ 445 $ 383 $ 865 $ 748

Interest income and other income 8 9 16 18

Revenues before reimbursements 453 392 881 766

Reimbursements 48 43 90 82

Total revenues 501 435 971 848

Compensation 274 244 538 475

Operating 83 73 161 144

Reimbursements 48 43 90 82

Depreciation 10 10 20 20

Amortization 7 6 14 12

Change in estimated acquisition earnout payables 1 1 2 1

Expenses 423 377 825 734

Earnings before income taxes 78 58 146 114

Provision for income taxes 21 15 39 30

Net earnings 57 43 107 84

Net earnings attributable to noncontrolling interests — — — —

Net earnings attributable to controlling interests $ 57 $ 43 $ 107 $ 84

EBITDAC

Net earnings $ 57 $ 43 $ 107 $ 84

Provision for income taxes 21 15 39 30

Depreciation 10 10 20 20

Amortization 7 6 14 12

Change in estimated acquisition earnout payables 1 1 2 1

EBITDAC $ 96 $ 75 $ 182 $ 147

See "Information Regarding Non-GAAP Measures" beginning on page 9 of 20.

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Arthur J. Gallagher & Co.

Reported Statement of Earnings and EBITDAC - 2nd Quarter June 30,

(Unaudited - in millions except share and per share data)

Corporate Segment 2nd Q Ended

June 30, 2026 2nd Q Ended

June 30, 2025 6 Mths Ended

June 30, 2026 6 Mths Ended

June 30, 2025

Other loss $ — $ — $ (5) $ —

Total revenues — — (5) —

Compensation 39 34 80 83

Operating 59 77 104 150

Interest 168 158 326 316

Depreciation 2 2 4 4

Expenses 268 271 514 553

Loss before income taxes (268) (271) (519) (553)

Benefit for income taxes (85) (86) (196) (220)

Net loss (183) (185) (323) (333)

Net loss attributable to noncontrolling interests — — — —

Net loss attributable to controlling interests $ (183) $ (185) $ (323) $ (333)

EBITDAC

Net loss $ (183) $ (185) $ (323) $ (333)

Benefit for income taxes (85) (86) (196) (220)

Interest 168 158 326 316

Depreciation 2 2 4 4

EBITDAC $ (98) $ (111) $ (189) $ (233)

See "Information Regarding Non-GAAP Measures" beginning on page 9 of 20.

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Arthur J. Gallagher & Co.

Reported Statement of Earnings and EBITDAC - 2nd Quarter June 30,

(Unaudited - in millions except share and per share data)

Total Company 2nd Q Ended

June 30, 2026 2nd Q Ended

June 30, 2025 6 Mths Ended

June 30, 2026 6 Mths Ended

June 30, 2025

Commissions $ 2,442 $ 1,808 $ 5,565 $ 4,057

Fees 1,183 962 2,395 1,947

Supplemental revenues 141 103 321 217

Contingent revenues 91 73 206 166

Interest income, premium finance revenues and other income 98 233 184 480

Revenues before reimbursements 3,955 3,179 8,671 6,867

Reimbursements 48 43 90 82

Total revenues 4,003 3,222 8,761 6,949

Compensation 2,330 1,804 4,846 3,701

Operating 679 519 1,322 1,009

Reimbursements 48 43 90 82

Interest 168 158 326 316

Depreciation 57 50 118 95

Amortization 301 180 579 390

Change in estimated acquisition earnout payables 6 (5) 23 10

Expenses 3,589 2,749 7,304 5,603

Earnings before income taxes 414 473 1,457 1,346

Provision for income taxes 90 105 310 269

Net earnings 324 368 1,147 1,077

Net earnings attributable to noncontrolling interests — — 1 5

Net earnings attributable to controlling interests $ 324 $ 368 $ 1,146 $ 1,072

Diluted net earnings per share $ 1.25 $ 1.40 $ 4.41 $ 4.12

Dividends declared per share $ 0.70 $ 0.65 $ 1.40 $ 1.30

EBITDAC

Net earnings $ 324 $ 368 $ 1,147 $ 1,077

Provision for income taxes 90 105 310 269

Interest 168 158 326 316

Depreciation 57 50 118 95

Amortization 301 180 579 390

Change in estimated acquisition earnout payables 6 (5) 23 10

EBITDAC $ 946 $ 856 $ 2,503 $ 2,157

See "Information Regarding Non-GAAP Measures" beginning on page 9 of 20.

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Arthur J. Gallagher & Co.

Consolidated Balance Sheet

(Unaudited - in millions except per share data)

June 30, 2026 Dec 31, 2025

Cash and cash equivalents $ 1,386 $ 1,396

Fiduciary assets (includes fiduciary cash of $7,947 in 2026 and $7,142 in 2025) 37,183 26,899

Accounts receivable, net 6,076 5,175

Other current assets 807 886

Total current assets 45,452 34,356

Fixed assets - net 765 789

Deferred income taxes 43 43

Other noncurrent assets 1,732 1,602

Right-of-use assets 578 598

Goodwill 23,026 22,593

Amortizable intangible assets - net 10,212 10,684

Total assets $ 81,808 $ 70,665

Fiduciary liabilities $ 37,183 $ 26,899

Accrued compensation and other current liabilities 3,548 4,017

Deferred revenue - current 788 737

Premium financing debt 134 226

Corporate related borrowings - current 1,520 640

Total current liabilities 43,173 32,519

Corporate related borrowings - noncurrent 11,955 12,104

Deferred revenue - noncurrent 177 155

Lease liabilities - noncurrent 497 515

Other noncurrent liabilities (includes tax credit carryforwards of $628 in 2026 and $713 in 2025) 2,259 2,025

Total liabilities 58,061 47,318

Stockholders' equity:

Common stock - issued and outstanding 256 257

Capital in excess of par value 17,567 17,783

Retained earnings 6,588 5,806

Accumulated other comprehensive loss (694) (525)

Total controlling interests stockholders' equity 23,717 23,321

Noncontrolling interests 30 26

Total stockholders' equity 23,747 23,347

Total liabilities and stockholders' equity $ 81,808 $ 70,665

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Arthur J. Gallagher & Co.

Other Information

(Unaudited - data is rounded where indicated)

OTHER INFORMATION 2nd Q Ended

June 30, 2026 2nd Q Ended

June 30, 2025 6 Mths Ended

June 30, 2026 6 Mths Ended

June 30, 2025

Basic weighted average shares outstanding (000s) 256,649 256,260 256,884 255,540

Diluted weighted average shares outstanding (000s) 258,685 260,435 259,260 259,929

Number of common shares outstanding at end of period (000s) 256,341 256,363

Workforce at end of period (includes acquisitions):

Brokerage 56,202 * 44,909

Risk Management 11,254 10,584

Total Company 73,329 * 59,291

* The acquisition of AssuredPartners added approximately 10,900 employees in August 2025.

Reconciliation of Non-GAAP Measures - Pre-tax Earnings and Diluted Net Earnings per Share (Unaudited)

(Unaudited - in millions except share and per share data)

Earnings

(Loss)

Before Income

Taxes Provision

(Benefit)

for Income

Taxes Net Earnings

(Loss) Net Earnings

(Loss)

Attributable to

Noncontrolling

Interests Net Earnings

(Loss)

Attributable to

Controlling

Interests Diluted Net

Earnings

(Loss)

per Share

2nd Q Ended June 30, 2026

Brokerage, as reported $ 604 $ 154 $ 450 $ — $ 450 $ 1.74

Net (gains) on divestitures (8) (2) (6) — (6) (0.02)

Acquisition integration 113 29 84 — 84 0.33

Workforce and lease termination 40 10 30 — 30 0.11

Acquisition related adjustments 66 17 49 — 49 0.19

Amortization of intangible assets 294 76 218 — 218 0.84

Brokerage, as adjusted $ 1,109 $ 284 $ 825 $ — $ 825 $ 3.19

Risk Management, as reported $ 78 $ 21 $ 57 $ — $ 57 $ 0.22

Acquisition integration 1 — 1 — 1 –

Workforce and lease termination 2 1 1 — 1 0.01

Acquisition related adjustments 2 — 2 — 2 0.01

Amortization of intangible assets 7 2 5 — 5 0.02

Risk Management, as adjusted $ 90 $ 24 $ 66 $ — $ 66 $ 0.26

Corporate, as reported $ (268) $ (85) $ (183) $ — $ (183) $ (0.71)

Transaction-related costs 12 2 10 — 10 0.04

Legal, tax and benefit plan related 21 5 16 — 16 0.06

Corporate, as adjusted $ (235) $ (78) $ (157) $ — $ (157) $ (0.61)

See "Information Regarding Non-GAAP Measures" beginning on page 9 of 20.

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Reconciliation of Non-GAAP Measures - Pre-tax Earnings and Diluted Net Earnings per Share (Unaudited) - Continued

(Unaudited - in millions except share and per share data)

Earnings

(Loss)

Before Income

Taxes Provision

(Benefit)

for Income

Taxes Net Earnings

(Loss) Net Earnings

(Loss)

Attributable to

Noncontrolling

Interests Net Earnings

(Loss)

Attributable to

Controlling

Interests Diluted Net

Earnings

(Loss)

per Share

2nd Q Ended June 30, 2025

Brokerage, as reported $ 686 $ 176 $ 510 $ — $ 510 $ 1.95

Net (gains) on divestitures (6) (1) (5) — (5) (0.02)

Acquisition integration 41 11 30 — 30 0.12

Workforce and lease termination 37 9 28 — 28 0.11

Acquisition related adjustments 33 8 25 — 25 0.09

Amortization of intangible assets 174 44 130 — 130 0.50

Levelized foreign currency translation (10) (3) (7) — (7) (0.03)

Brokerage, as adjusted $ 955 $ 244 $ 711 $ — $ 711 $ 2.72

Risk Management, as reported $ 58 $ 15 $ 43 $ — $ 43 $ 0.16

Acquisition integration 2 1 1 — 1 0.01

Workforce and lease termination 4 1 3 — 3 0.01

Acquisition related adjustments 1 – 1 — 1 —

Amortization of intangible assets 6 1 5 — 5 0.02

Levelized foreign currency translation 1 — 1 — 1 —

Risk Management, as adjusted $ 72 $ 18 $ 54 $ – $ 54 $ 0.20

Corporate, as reported $ (271) $ (86) $ (185) $ — $ (185) $ (0.71)

Transaction-related costs 29 5 24 — 24 0.09

Corporate, as adjusted $ (242) $ (81) $ (161) $ – $ (161) $ (0.62)

See "Information Regarding Non-GAAP Measures" beginning on page 9 of 20.

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Reconciliation of Non-GAAP Measures - Pre-tax Earnings and Diluted Net Earnings per Share (Unaudited) - Continued

(Unaudited - in millions except share and per share data)

Earnings

(Loss)

Before Income

Taxes Provision

(Benefit)

for Income

Taxes Net Earnings

(Loss) Net Earnings

(Loss)

Attributable to

Noncontrolling

Interests Net Earnings

(Loss)

Attributable to

Controlling

Interests Diluted Net

Earnings

(Loss)

per Share

6 Mths Ended June 30, 2026

Brokerage, as reported $ 1,830 $ 467 $ 1,363 $ 1 $ 1,362 $ 5.25

Net (gains) on divestitures (15) (4) (11) — (11) (0.04)

Acquisition integration 200 51 149 — 149 0.57

Workforce and lease termination 67 17 50 — 50 0.19

Acquisition related adjustments 119 31 88 — 88 0.34

Amortization of intangible assets 565 146 419 — 419 1.62

Brokerage, as adjusted $ 2,766 $ 708 $ 2,058 $ 1 $ 2,057 $ 7.93

Risk Management, as reported $ 146 $ 39 $ 107 $ — $ 107 $ 0.41

Acquisition integration 2 — 2 — 2 0.01

Workforce and lease termination 3 1 2 — 2 0.01

Acquisition related adjustments 8 2 6 — 6 0.02

Amortization of intangible assets 14 4 10 — 10 0.04

Risk Management, as adjusted $ 173 $ 46 $ 127 $ — $ 127 $ 0.49

Corporate, as reported $ (519) $ (196) $ (323) $ — $ (323) $ (1.25)

Transaction-related costs 19 3 16 — 16 0.06

Legal, tax and benefit plan related 39 22 17 — 17 0.07

Clean energy-related 5 2 3 — 3 0.01

Corporate, as adjusted $ (456) $ (169) $ (287) $ — $ (287) $ (1.11)

See "Information Regarding Non-GAAP Measures" beginning on page 9 of 20.

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Reconciliation of Non-GAAP Measures - Pre-tax Earnings and Diluted Net Earnings per Share (Unaudited) - Continued

(Unaudited - in millions except share and per share data)

Earnings

(Loss)

Before Income

Taxes Provision

(Benefit)

for Income

Taxes Net Earnings

(Loss) Net Earnings

(Loss)

Attributable to

Noncontrolling

Interests Net Earnings

(Loss)

Attributable to

Controlling

Interests Diluted Net

Earnings

(Loss)

per Share

6 Mths Ended June 30, 2025

Brokerage, as reported

$ 1,785 $ 459 $ 1,326 $ 5 $ 1,321 $ 5.08

Net (gains) on divestitures

(12) (3) (9) — (9) (0.04)

Acquisition integration

85 22 63 — 63 0.24

Workforce and lease termination

55 13 42 — 42 0.16

Acquisition related adjustments

66 16 50 — 50 0.19

Amortization of intangible assets

378 96 282 — 282 1.09

Effective income tax impact

— (1) 1 — 1 —

Levelized foreign currency translation

7 1 6 — 6 0.03

Brokerage, as adjusted

$ 2,364 $ 603 $ 1,761 $ 5 $ 1,756 $ 6.75

Risk Management, as reported

$ 114 $ 30 $ 84 $ — $ 84 $ 0.32

Acquisition integration

4 2 2 — 2 0.01

Workforce and lease termination

7 1 6 — 6 0.02

Acquisition related adjustments

1 — 1 — 1 —

Amortization of intangible assets

12 3 9 — 9 0.04

Levelized foreign currency translation

2 — 2 — 2 0.01

Risk Management, as adjusted

$ 140 $ 36 $ 104 $ — $ 104 $ 0.40

Corporate, as reported

$ (553) $ (220) $ (333) $ — $ (333) $ (1.28)

Transaction-related costs

52 8 44 — 44 0.17

Corporate, as adjusted

$ (501) $ (212) $ (289) $ — $ (289) $ (1.11)

See "Information Regarding Non-GAAP Measures" on page 9 of 20.

Contact:

Sara Walsh

630-285-3593 or sara_walsh@ajg.com

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Entity Incorporation State Country Code

Entity File Number

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duration

- Definition

Area code of city

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No definition available.

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xbrli:normalizedStringItemType

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- Definition

Cover page.

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No definition available.

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- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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No definition available.

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dei_DocumentPeriodEndDate

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xbrli:dateItemType

Balance Type:

Period Type:

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- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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No definition available.

+ Details

Name:

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Balance Type:

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- Definition

Address Line 1 such as Attn, Building Name, Street Name

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No definition available.

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- Definition

Name of the City or Town

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No definition available.

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Namespace Prefix:

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Balance Type:

Period Type:

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- Definition

Code for the postal or zip code

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No definition available.

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Namespace Prefix:

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- Definition

Name of the state or province.

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No definition available.

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Name:

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- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Name:

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- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

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- Definition

Two-character EDGAR code representing the state or country of incorporation.

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No definition available.

+ Details

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- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Name:

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- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

Local phone number for entity.

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No definition available.

+ Details

Name:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

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Name:

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Namespace Prefix:

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Balance Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

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Name:

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Namespace Prefix:

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Data Type:

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Balance Type:

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- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

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Name:

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Data Type:

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Balance Type:

Period Type:

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- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

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Name:

dei_SecurityExchangeName

Namespace Prefix:

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Data Type:

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Balance Type:

Period Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

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Name:

dei_SolicitingMaterial

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Data Type:

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- Definition

Trading symbol of an instrument as listed on an exchange.

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No definition available.

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

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