Supply Chain Intelligence

Marsh & McLennan Companies, Inc. Supply Chain

MRSH supply chain intelligence for Marsh & McLennan Companies, Inc.: verified suppliers, customers, debt relationships, acquisitions, and ownership data.

MRSH ·Last updated 2026-09-13 · Interactive map →

Data compiled by Redley Lamar · ChainSifter Intelligence

6Suppliers
25Customers
1Debt Items
20Related Chains

Source-Backed Evidence Depth

Marsh & McLennan Companies, Inc. (MRSH) is shown with relationship data already present in ChainSifter's database. Counts below come from stored supply-chain records and filing/source URLs where available; missing source URLs are not filled in or estimated.

33Total relationships
1Distinct source URLs
11High confidence
0.718Average confidence
2026-09-13Latest database update
ChainSifter does not infer unreported suppliers, customers, ownership, acquisitions, debt exposure, revenue dependency, or future supply-chain events on this public page.

Marsh & McLennan Companies, Inc. Suppliers

TickerNameConfidenceEvidence
FIHL Pelagos Insurance Capital Limited 90% Reciprocal relationship from FIHL graph: Reciprocal relationship from MRSH graph: Reciprocal relationship from FIHL graph: Reciprocal relationship from MRSH graph: Reciprocal relationship from FIHL g…
TIRX Tian Ruixiang Holdings Ltd. 85% Reciprocal relationship from TIRX graph: Reciprocal relationship from MRSH graph: Reciprocal relationship from TIRX graph: Reciprocal relationship from MRSH graph: Reciprocal relationship from TIRX g…
AXS AXIS Capital Holdings Limited 72% Reciprocal relationship from AXS graph: surance Company S.A., and consequently AXIS Managing Agency. This would potentially limit AXIS' ability to access the EEA market through the Lloyd's platform. …
GSHD Goosehead Insurance, Inc. 72% Reciprocal relationship from GSHD graph: . Independent agencies are “independent” of any one Carrier and can offer insurance products from multiple Carriers to their clients. There are approximately …
RNR RenaissanceRe Holdings Ltd. 72% Reciprocal relationship from RNR graph: NOTE 14. RELATED PARTY TRANSACTIONS AND MAJOR CUSTOMERS Tower Hill The Company has equity investments in Tower Hill Holdings Inc. (“Tower Hill”) and certain of…
WTM White Mountains Insurance Group, Ltd. 72% Reciprocal relationship from WTM graph: nal and excess of loss basis. Nuclear Nuclear insurance covers country specific nuclear pools and companies and institutions with nuclear exposure excluded fro…

Marsh & McLennan Companies, Inc. Customers

TickerNameConfidenceEvidence
GUY-CARPENTER GUY-CARPENTER 90% 4 % Guy Carpenter 1,240 1,206 3 % 1,214 1,194 2 % Subtotal 4,966 4,659 7 % 4,796 4,629 4 % Fiduciary interest income 85 103 84 103 Total Risk and Insurance Services 5,051 4,762 6 % 4,880 4,732 3 %
MARSH-MANAGEMENT-CONSULTING MARSH-MANAGEMENT-CONSULTING 90% Consulting Mercer 1,661 1,496 11 % 1,562 1,494 5 % Marsh Management Consulting 897 818 10 % 870 818 6 % Total Consulting 2,558 2,314 11 % 2,432 2,312 5 %
MERCER MERCER 90% Consulting Mercer 1,661 1,496 11 % 1,562 1,494 5 % Marsh Management Consulting 897 818 10 % 870 818 6 % Total Consulting 2,558 2,314 11 % 2,432 2,312 5 %
ARTHUR-C-HALL-INSURANCE-INC ARTHUR-C-HALL-INSURANCE-INC 85% ased insurance broker that specializes in life sciences, start-up and professional services businesses. 20 • April – MMA acquired Arthur C. Hall Insurance, Inc., a Pennsylvania-based insurance broker…
EXCEL-INSURANCE-LLC EXCEL-INSURANCE-LLC 85% ased insurance broker that specializes in life sciences, start-up and professional services businesses. 20 • April – MMA acquired Arthur C. Hall Insurance, Inc., a Pennsylvania-based insurance broker…
ROBINS-INSURANCE-AGENCY-INC ROBINS-INSURANCE-AGENCY-INC 85% d S. Barberie Insurance Agency, Inc. (d/b/a Olympic Insurance Agency), a California-based insurance broker that provides business insurance, employee benefits, and personal asset protection expertise…
THORNTON-HARVEY-GROUP-LLC THORNTON-HARVEY-GROUP-LLC 85% ased insurance broker that specializes in life sciences, start-up and professional services businesses. 20 • April – MMA acquired Arthur C. Hall Insurance, Inc., a Pennsylvania-based insurance broker…
ATLAS-INSURANCE-AGENCY-INC-PYRAMID-INSURANCE-CEN ATLAS-INSURANCE-AGENCY-INC-PYRAMID-INSURANCE-CEN 62% d S. Barberie Insurance Agency, Inc. (d/b/a Olympic Insurance Agency), a California-based insurance broker that provides business insurance, employee benefits, and personal asset protection expertise…
CARPENTER-TURNER-CYPRUS-LTD CARPENTER-TURNER-CYPRUS-LTD 62% ted expenses are included in compensation and benefits or other operating expenses in the Company's consolidated statements of income, depending on the nature of the items. Prior year acquisitions Th…
CEREBRUS-CONSULTANTS-PRIVATE-LIMITED CEREBRUS-CONSULTANTS-PRIVATE-LIMITED 62% ased insurance brokers offering insurance solutions to businesses and individuals throughout Hawaii with a niche industry specialization in municipality, transportation and hospitality; and Marsh Ris…
DONALD-S-BARBERIE-INSURANCE-AGENCY-INC DONALD-S-BARBERIE-INSURANCE-AGENCY-INC 62% ased insurance broker that provides property and casualty insurance solutions to small businesses and individuals in South Florida, with specialties in watercraft and motor vehicle protection; and Do…
FUNDHOUSE-BESPOKE-LIMITED FUNDHOUSE-BESPOKE-LIMITED 62% ased insurance brokers offering insurance solutions to businesses and individuals throughout Hawaii with a niche industry specialization in municipality, transportation and hospitality; and Marsh Ris…
FUNDHOUSE-LIMITED FUNDHOUSE-LIMITED 62% ased insurance brokers offering insurance solutions to businesses and individuals throughout Hawaii with a niche industry specialization in municipality, transportation and hospitality; and Marsh Ris…
GREENSILL-BANK-AG GREENSILL-BANK-AG 62% the three months ended March 31, 2025, the Company repurchased 1.3 million shares of its common stock for $ 300 million. The Company issued approximately 1.5 million and 2.6 million shares related to…
HUMAN-RESOURCES-MANAGEMENT-GMBH HUMAN-RESOURCES-MANAGEMENT-GMBH 62% 402 $ ( 9 ) $ 411 Pension/post-retirement plans: Amortization of losses (gains) included in net benefit (credit) cost: Net actuarial losses (a) 23 6 17 10 3 7 Subtotal 23 6 17 10 3 7 Foreign currency…
MARSH-PTY-LTD MARSH-PTY-LTD 62% the three months ended March 31, 2025, the Company repurchased 1.3 million shares of its common stock for $ 300 million. The Company issued approximately 1.5 million and 2.6 million shares related to…
MCLENNAN-COMPANIES-INC MCLENNAN-COMPANIES-INC 62% ew standard effective December 31, 2025, on a prospective basis, which impacted disclosures only, with no impact to results of operations, cash flows, or financial condition. 37 Item 2. Management’s …
MITSUBISHI-ELECTRIC-INSURANCE-SERVICE-CO-LTD MITSUBISHI-ELECTRIC-INSURANCE-SERVICE-CO-LTD 62% d S. Barberie Insurance Agency, Inc. (d/b/a Olympic Insurance Agency), a California-based insurance broker that provides business insurance, employee benefits, and personal asset protection expertise…
NMF-INSURANCE-INC NMF-INSURANCE-INC 62% d S. Barberie Insurance Agency, Inc. (d/b/a Olympic Insurance Agency), a California-based insurance broker that provides business insurance, employee benefits, and personal asset protection expertise…
OLIVER-WYMAN-GROUP OLIVER-WYMAN-GROUP 62% ew standard effective December 31, 2025, on a prospective basis, which impacted disclosures only, with no impact to results of operations, cash flows, or financial condition. 37 Item 2. Management’s …
S-BARBERIE-INSURANCE-AGENCY-INC S-BARBERIE-INSURANCE-AGENCY-INC 62% d S. Barberie Insurance Agency, Inc. (d/b/a Olympic Insurance Agency), a California-based insurance broker that provides business insurance, employee benefits, and personal asset protection expertise…
SON-LLC SON-LLC 62% 402 $ ( 9 ) $ 411 Pension/post-retirement plans: Amortization of losses (gains) included in net benefit (credit) cost: Net actuarial losses (a) 23 6 17 10 3 7 Subtotal 23 6 17 10 3 7 Foreign currency…
U-K-BASED-SEDGWICK-GROUP U-K-BASED-SEDGWICK-GROUP 62% the three months ended March 31, 2025, the Company repurchased 1.3 million shares of its common stock for $ 300 million. The Company issued approximately 1.5 million and 2.6 million shares related to…
UK-LIMITED UK-LIMITED 62% the three months ended March 31, 2025, the Company repurchased 1.3 million shares of its common stock for $ 300 million. The Company issued approximately 1.5 million and 2.6 million shares related to…
VALIDATE-HEALTH-INC VALIDATE-HEALTH-INC 62% ased insurance brokers offering insurance solutions to businesses and individuals throughout Hawaii with a niche industry specialization in municipality, transportation and hospitality; and Marsh Ris…

Marsh & McLennan Companies, Inc. Debt Obligations

InstrumentDescriptionConfidenceEvidence
MRSH-DEBT Debt stack $20.6B 90% Market cache reports total debt of $20.6B.

Marsh & McLennan Companies, Inc. Acquisitions

No acquisitions on recordNo completed or pending acquisitions found in our database for Marsh & McLennan Companies, Inc..

Marsh & McLennan Companies, Inc. Ownership

HolderNameConfidenceEvidence
MRSH-OWNER-VANGUARD-CAPITAL-MANAGEMENT-LLC VANGUARD CAPITAL MANAGEMENT LLC 90% 13F overlay lists VANGUARD CAPITAL MANAGEMENT LLC as top holder; 1545 tracked holders.

Marsh & McLennan Companies, Inc. Extended Supply Chain Network

TickerNameChain IndexHopsRelationship Types
AJG Arthur J. Gallagher & Co. 100.00 2
WTM White Mountains Insurance Group, Ltd. 100.00 1 ['supplier']
RNR RenaissanceRe Holdings Ltd. 100.00 1 ['supplier']
GSHD Goosehead Insurance, Inc. 100.00 1 ['supplier']
FIHL Pelagos Insurance Capital Limited 100.00 1 ['supplier']
FMCKI Federal Home Loan Mortgage Corporation 100.00 2
FNMAS Federal National Mortgage Association 100.00 2
HUIZ Huize Holding Limited 100.00 2
AON Aon plc 100.00 2
MERCER MERCER 60.75 1 ['receiving']
PLGO Pelagos Insurance Capital Limit 50.00 2
SBS Companhia de Saneamento Básico do Estado de São Paulo - SABESP 50.00 2
BHAT Blue Hat Interactive Entertainment Technology 50.00 2
FRO Frontline plc 50.00 2
CRS Carpenter Technology Corporation 50.00 2
XYF X Financial 50.00 2
BX Blackstone Inc. 50.00 2
GL Globe Life Inc. 50.00 2
MAX MediaAlpha, Inc. 50.00 2
RNR-PF RenaissanceRe Holdings Ltd. 50.00 2
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MRSH
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Verified relationships include:
FIHLPelagos Insurance Capital…Supplier90%
TIRXTian Ruixiang Holdings Ltd.Supplier85%
GUY-CARPENTERGUY-CARPENTERCustomer90%
MARSH-MANAGEMENT-CONSULTINGMARSH-MANAGEMENT-CONSULTINGCustomer90%
+29 more relationships locked
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