Who are The Hanover Insurance Group, Inc.'s main suppliers?

The Hanover Insurance Group, Inc. (THG) key suppliers include: MCCA, CLOUD-BASED-DATA-STORAGE, HIGH-QUALITY-VALUE-ORIENTED-AGENCIES, THIRD-PARTY-SYSTEMS, CRITICAL-THIRD-PARTY-VENDORS. View the full supplier network at chainsifter.com/chain/THG.

Who are The Hanover Insurance Group, Inc.'s major customers?

The Hanover Insurance Group, Inc. (THG) key customers include: FIRST-ALLMERICA-FINANCIAL-LIFE-INSURANCE-COMPANY, Berkshire Hathaway Inc., Berkshire Hathaway Inc., Chubb Limited, Chubb Limited and 10 more. View the full customer network at chainsifter.com/chain/THG.

What sector is The Hanover Insurance Group, Inc. in?

The Hanover Insurance Group, Inc. (THG) operates in the general sector. ChainSifter tracks its verified supply chain relationships including suppliers, customers, and strategic partners.

The Hanover Insurance Group, Inc. Supplier List (THG): 5 Verified Suppliers

5Suppliers

15Customers

1Debt Items

20Related Chains

Source-Backed Evidence Depth

The Hanover Insurance Group, Inc. (THG) 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.

22Total relationships

3Distinct source URLs

8High confidence

0.736Average 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.

The Hanover Insurance Group, Inc. Suppliers

Ticker	Name	Confidence	Evidence
MCCA	MCCA	92%	Funding for the MCCA comes from assessments against automobile insurers based upon their share of insured automobiles in the state for which the policyholders have elected unlimited PIP benefits.
CLOUD-BASED-DATA-STORAGE	CLOUD-BASED-DATA-STORAGE	90%	Our internal and external information technology and telecommunications systems, in turn, interface with and rely upon third-party systems, including cloud-based data storage.
HIGH-QUALITY-VALUE-ORIENTED-AGENCIES	HIGH-QUALITY-VALUE-ORIENTED-AGENCIES	90%	Personal Lines focuses on working with high quality, value-oriented agencies that deliver consultative selling to customers
THIRD-PARTY-SYSTEMS	THIRD-PARTY-SYSTEMS	90%	Our internal and external information technology and telecommunications systems, in turn, interface with and rely upon third-party systems, including cloud-based data storage.
CRITICAL-THIRD-PARTY-VENDORS	CRITICAL-THIRD-PARTY-VENDORS	85%	These same risks are ones that our critical third-party vendors may face, and if those vendors are adversely impacted, then our operations could be harmed.

The Hanover Insurance Group, Inc. Customers

Ticker	Name	Confidence	Evidence
FIRST-ALLMERICA-FINANCIAL-LIFE-INSURANCE-COMPANY	FIRST-ALLMERICA-FINANCIAL-LIFE-INSURANCE-COMPANY	85%	7,012.6 Reserves for discontinued accident and health business of our insurance subsidiaries are included in liabilities of discontinued operations for GAAP and loss and loss adjustment expenses for …
BRK-B	Berkshire Hathaway Inc.	72%	de insurance coverages to individuals or other entities that are otherwise unable to purchase such coverage voluntarily or at rates deemed reasonable. These market mechanisms, facilities, and pooling…
BRK-B	Berkshire Hathaway Inc.	72%	Reciprocal relationship from BRK-B graph: Reciprocal relationship from THG graph: de insurance coverages to individuals or other entities that are otherwise unable to purchase such coverage voluntari…
CB	Chubb Limited	72%	Reciprocal relationship from CB graph: Reciprocal relationship from THG graph: Reciprocal relationship from CB graph: Reciprocal relationship from THG graph: de insurance coverages to individuals or …
CB	Chubb Limited	72%	de insurance coverages to individuals or other entities that are otherwise unable to purchase such coverage voluntarily or at rates deemed reasonable. These market mechanisms, facilities, and pooling…
CITIZENS-INSURANCE-COMPANY	CITIZENS-INSURANCE-COMPANY	62%	Our consolidated financial statements include the accounts of THG; The Hanover Insurance Company (“Hanover Insurance”) and Citizens Insurance Company of America (“Citizens”), which are our principal …
COMMONWEALTH-RE-LTD	COMMONWEALTH-RE-LTD	62%	einsurer with no material change in terms. Catastrophe Bonds We have catastrophe protection through two per occurrence excess of loss reinsurance agreements with Commonwealth Re Ltd. (“Commonwealth R…
GENERAL-REINSURANCE-CORP	GENERAL-REINSURANCE-CORP	62%	de insurance coverages to individuals or other entities that are otherwise unable to purchase such coverage voluntarily or at rates deemed reasonable. These market mechanisms, facilities, and pooling…
HANNOVER-RUCKVERSICHERUNGS-AG	HANNOVER-RUCKVERSICHERUNGS-AG	62%	de insurance coverages to individuals or other entities that are otherwise unable to purchase such coverage voluntarily or at rates deemed reasonable. These market mechanisms, facilities, and pooling…
HDI-GROUP	HDI-GROUP	62%	de insurance coverages to individuals or other entities that are otherwise unable to purchase such coverage voluntarily or at rates deemed reasonable. These market mechanisms, facilities, and pooling…
LIFE-INSURANCE-COMPANY	LIFE-INSURANCE-COMPANY	62%	dustry. Many policyholders, particularly larger commercial customers, will not purchase, and many agents will not distribute, products of insurers that do not meet certain financial strength ratings.…
OPUS-INVESTMENT-MANAGEMENT-INC	OPUS-INVESTMENT-MANAGEMENT-INC	62%	Operating income before interest expense and income taxes increased in 2024, primarily due to lower current accident year losses, relative to earned premiums, higher net investment income, and earned…
PARTNER-REINSURANCE-COMPANY	PARTNER-REINSURANCE-COMPANY	62%	de insurance coverages to individuals or other entities that are otherwise unable to purchase such coverage voluntarily or at rates deemed reasonable. These market mechanisms, facilities, and pooling…
TOA-REINSURANCE-COMPANY-LTD	TOA-REINSURANCE-COMPANY-LTD	62%	de insurance coverages to individuals or other entities that are otherwise unable to purchase such coverage voluntarily or at rates deemed reasonable. These market mechanisms, facilities, and pooling…
TRANSATLANTIC-REINSURANCE-CO	TRANSATLANTIC-REINSURANCE-CO	62%	de insurance coverages to individuals or other entities that are otherwise unable to purchase such coverage voluntarily or at rates deemed reasonable. These market mechanisms, facilities, and pooling…

The Hanover Insurance Group, Inc. Debt Obligations

Instrument	Description	Confidence	Evidence
THG-DEBT	Debt stack $844.0M	90%	Market cache reports total debt of $844.0M.

The Hanover Insurance Group, Inc. Acquisitions

No acquisitions on recordNo completed or pending acquisitions found in our database for The Hanover Insurance Group, Inc..

The Hanover Insurance Group, Inc. Ownership

Holder	Name	Confidence	Evidence
THG-OWNER-BLACKROCK-INC	BlackRock, Inc.	90%	13F overlay lists BlackRock, Inc. as top holder; 506 tracked holders.

The Hanover Insurance Group, Inc. Extended Supply Chain Network

Ticker	Name	Chain Index	Hops	Relationship Types
BCH	Banco de Chile	100.00	2
BRK-B	Berkshire Hathaway Inc.	100.00	1	['customer']
HIG	The Hartford Insurance Group, Inc.	50.00	2
CORT	Corcept Therapeutics Incorporated	50.00	2
RYAN	Ryan Specialty Holdings, Inc.	50.00	2
BHE	Benchmark Electronics, Inc.	50.00	2
ADP	Automatic Data Processing, Inc.	50.00	2
DJCO	Daily Journal Corporation	50.00	2
AXP	American Express Company	50.00	2
AA	Alcoa Corporation	50.00	2
BRIA	BrilliA Inc	50.00	2
OXY	Occidental Petroleum Corporation	50.00	2
NU	Nu Holdings Ltd.	50.00	2
POR	Portland General Electric Company	50.00	2
PRI	Primerica, Inc.	50.00	2
L	Loews Corporation	50.00	2
JPM-PD	JPMorgan Chase & Co.	50.00	2
SSP	The E.W. Scripps Company	50.00	2
MS-PE	Morgan Stanley	50.00	2
ORI	Old Republic International Corporation	50.00	2

The Hanover Insurance Group, Inc. Supply Chain