Screener / SEC EDGAR /CIK 0000944695 /10-K filed Feb 20, 2026, compared with Feb 24, 2025 /Numbers from the XBRL of the 10-Ks
NYSE Financials · Property & Casualty Insurance

Hanover Insurance Group, Inc. THG

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New in the 10-K 13 paragraphs with nothing like them in the 10-K filed Feb 24, 2025 New in the 10-Q 7 paragraphs not in the 10-Q filed Jul 29, 2026 10-Q against the 10-K 18 risk factor paragraphs and sentences added or reworded

New risk paragraphs, branching off last year

Each branch is a paragraph in Risk Factors with nothing like it in the 10-K filed Feb 24, 2025. A box jumps to the paragraph as filed, below.

13 new

Paragraphs with nothing like them in last year's 10-K

Quoted exactly

13 paragraphs in Risk Factors of the 10-K filed Feb 20, 2026 with nothing like them in the 10-K filed Feb 24, 2025. Quoted exactly. Paragraphs that were only edited are under 10-K change.

Risks Related to Technology, Information Security, Privacy and Third-Party Suppliers

If we or our suppliers experience unforeseen interruptions or difficulties in the operation of the information technology systems that support our business, our operations, reputation, and financial results could be negatively affected.

We and certain third-party partners rely on the continuous availability and proper functioning of our information technology systems and those of our third-party vendors to process, store, retrieve, evaluate, and use internal and external data and to perform necessary insurance functions. These functions include providing insurance quotations, processing premium payments, servicing, and modifying existing policies, filing and paying claims, supporting agents, brokers, and policyholders, and managing our investment portfolios. Our systems, and those of our suppliers, may be subject to interruptions, failures, or degradation due to technological or human errors, software or hardware defects, vulnerabilities, system capacity limitations, computer or communications failures, power outages, disruptions during system upgrades or replacements, adverse weather, or natural disasters, cyberattacks, or other unexpected events.

If these systems are disrupted or become inaccessible to our employees, agents, brokers, or policyholders for an extended period, and if our disaster recovery or business continuity plans or those of our suppliers are inadequate or do not function as intended, our ability to conduct business could be impaired. Prolonged or severe disruptions could result in the loss of critical data, harm to policyholder, agent, and partner relationships, increased claims or operating costs, reputational damage, and adverse impacts on our operations and financial results.

Our inability to adapt to or implement new technologies, including artificial intelligence, could adversely affect our business and results of operations, and the use of new technologies may create unforeseen exposure or coverage issues.

We rely on a broad range of advanced technologies, including AI, to support our operations. As these technologies continue to rapidly evolve, our business could be adversely affected if we are unable to effectively adopt, update, integrate, or scale new capabilities in a timely or cost-effective manner. Competitors with greater technology investments or faster innovation cycles may introduce enhanced AI enabled tools, digital experiences, or analytic capabilities that improve efficiency, the customer or agent experience, and business outcomes. If we fail to keep pace with such developments, we may face disadvantages in attracting and retaining policyholders, supporting our distribution partners, or achieving operational efficiency, which could adversely affect our business and results of operations. New or evolving technologies, including AI, may also create unforeseen exposures or coverage issues under the policies we write or introduce new forms of claims fraud or cybercrime. In addition, regulatory standards relating to the use of AI in the states where we do business are also evolving and may increase the complexity of our compliance and reporting obligations, as well as the regulatory risks associated with our use of this technology.

Our operations, financial performance and reputation could be adversely affected, and we could be subject to legal liability or regulatory enforcement actions, if we, or our suppliers, are unable to protect against, or effectively respond to, cyberattacks or other cyber incidents.

We rely extensively on the security, integrity, and availability of our information technology systems and those of our agents, brokers, third-party administrators, claims vendors, catastrophe response partners, and other service providers to underwrite policies, price risk, service policyholders, adjust and pay claims, manage reinsurance arrangements, and store and process large volumes of sensitive personal and commercial information. These systems are exposed to continuously evolving cybersecurity threats, including unauthorized access, malware, ransomware, distributed denial of service attacks, phishing and other social engineering schemes,

insider threats, software vulnerabilities, and operational or system failures. A cybersecurity attack or other security incident affecting us or a third-party service provider could disrupt our ability to quote, bind, issue, or service policies, impede claims intake, investigation, or settlement, compromise or misappropriate confidential agent, policyholder, claimant, or commercial customer information, affect our catastrophe response capabilities, or interfere with the operation of telematics, Internet of Things devices, or other data collection tools used in underwriting or claims processing. Such events could also expose us to regulatory investigations or enforcement actions by state insurance departments, litigation, contractual liabilities to distribution partners, remediation costs, operational delays, reputational harm, and adverse impacts on our financial condition or results of operations. Although we maintain a cybersecurity program designed to prevent, detect, and respond to security threats and continually enhance our defenses, no control environment can eliminate all risk. Like many companies in the property and casualty insurance industry, we and our third-party service providers have experienced, and are likely to continue to experience, cybersecurity events and attempts to compromise systems. To date, these events have not had a material adverse effect on our business, but there is no assurance that future incidents will not be material. Cybersecurity threats continue to grow in frequency and complexity, including due to the rapid advancement and use of AI by threat actors. As a result, we may be required to devote additional financial, technological, and personnel resources to monitor, detect, investigate, contain, mitigate, remediate, or defend against such threats. These efforts may increase costs and divert resources from other operational or strategic priorities.

We also rely on numerous third parties, including agents, brokers, claims adjusters, contractors, independent appraisers, managed repair networks, cloud providers, and other vendors, all of whom face similar cybersecurity risks. A cybersecurity incident affecting one of these third parties could compromise our data or systems, disrupt our business processes, or increase our exposure to regulatory, operational, or financial risks through the interconnected nature of our business relationships. While we employ oversight and protective measures intended to reduce these risks, we cannot guarantee that our controls or those of our third parties will prevent all cybersecurity incidents.

For more information on how we handle cybersecurity, see Item 1C. Cybersecurity.

Read in the 10-K

If we fail to effectively manage our third-party suppliers, or if their ability to perform were negatively impacted, our business, financial performance and reputation could be adversely affected.

Read in the 10-K

Inflationary pressures in the U.S. may negatively impact the results of our operations and the adequacy of our prior reserves through increased costs associated with paying claims and operational expenses. Given the breath of our underwriting portfolio, inflation impacts could vary based on coverage and market conditions, ranging from the cost of construction or automobile parts to the cost of health care and medical procedures, to the rise of litigation trends and awards.

Read in the 10-K

Paragraphs in the 10-Q filed Oct 29, 2026 that were not in the one before

New in the latest 10-Q

7 paragraphs in the 10-Q filed Oct 29, 2026 with nothing like them in the 10-Q filed Jul 29, 2026 (at least half the words must differ; new numbers alone do not count). Quoted exactly, grouped by the item heading above them. This is text that changed, not a judgement of how serious it is.

Financial statements and notes

Included in other comprehensive income (loss) - changes (0.1) (0.1) (0.2) - (0.2)

Read in the 10-Q

Included in other comprehensive income (loss) - changes (0.1) (0.1) (0.2) - (0.2)

Read in the 10-Q

MD&A

Three Months Ended September 30, 2026 Compared to Three Months Ended September 30, 2025

Read in the 10-Q

Nine Months Ended September 30, 2026 Compared to Nine Months Ended September 30, 2025

Read in the 10-Q

would be recognized as a realized loss. Although unrealized losses on fixed maturities are not reflected in the results of financial operations until they are realized, the fair value of the underlying investment, which does reflect the unrealized loss, is reflected in our Consolidated Balance Sheets.

Read in the 10-Q
Show the other 2

Three Months Ended September 30, 2026 Compared to Three Months Ended September 30, 2025

Read in the 10-Q

Nine Months Ended September 30, 2026 Compared to Nine Months Ended September 30, 2025

Read in the 10-Q

The 10-Q's risk factors against the 10-K

Item 1A of the 10-Q filed Oct 29, 2026 against Item 1A of the 10-K filed Feb 20, 2026. A 10-Q repeats only the risks that changed, so a 10-K paragraph that is missing from it is not counted as removed. Added is a paragraph with nothing like it in the 10-K, Reworded a sentence that is in both with several words changed, Quiet changes a sentence in both where one to four words changed and one is a hedge or a modal (cut words struck through, new words highlighted). Text on the page, not a score; each links to the filing at sec.gov.

What the 10-Q itself says about its risk factors:There have been no material changes to the risk factors described under "Risk Factors" in Part I - Item 1A of our 2025 Form 10-K.

Read in the 10-Q

What the 10-Q itself says about its risk factors:For a more detailed discussion of our risks and uncertainties, see Part I - Item 1A - “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2025.

Read in the 10-Q
Added10-Q Oct 29, 2026 vs 10-K Feb 20, 2026
This document contains certain “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements may address, among other things, our growth strategy; expected developments in our business, including losses and loss reserves; the impact of our routine reserve reviews; our expectations regarding our investment activities or results; our proposed actions in response to trends in our business; as well as our expectations, intentions and other statements that are not historical facts. Words such as: “believes,” “anticipates,” “expects,” “may,” “projections,” “outlook,” “intends,” “should,” “could,” “will,” “plan,” “goal,” “guidance,” “likely,” “on track to,” “potential,” “continue,” “targeted,” “designed,” “positioned,” and similar expressions are intended to identify forward-looking statements. Forward-looking statements by their nature address matters that are, to different degrees, uncertain. We caution readers that accuracy with respect to forward-looking projections is difficult and subject to risks and uncertainties. Those risks and uncertainties, in some cases, have affected, and in the future could affect, our actual results and could cause our actual results for the remainder of 2026 and beyond to differ materially from historical results and from those expressed in any of our forward-looking statements. We operate in a business environment that is continually changing, and as such, new risk factors may emerge over time. We cannot predict these new risk factors, nor can we assess the impact, if any, that they may have on our business in the future.

Read it in the 10-Q at sec.gov

Added10-Q Oct 29, 2026 vs 10-K Feb 20, 2026
• risks and uncertainties related to our growth and operating strategies, including our ability to attract, grow and retain profitable policies in force, to increase rates commensurate with, or in excess of, loss trends, and to manage expenses and execute strategic initiatives effectively;

Read it in the 10-Q at sec.gov

Added10-Q Oct 29, 2026 vs 10-K Feb 20, 2026
• adverse claims experience or changes in our estimates of loss and loss adjustment expense reserves, including those arising from catastrophes, inflationary pressures or global unrest, which may result in lower current year underwriting results or adverse loss development, and which could negatively impact our carried reserves;

Read it in the 10-Q at sec.gov

Added10-Q Oct 29, 2026 vs 10-K Feb 20, 2026
• uncertainties with respect to the long-term profitability of our products, including with respect to newer products, or longer-tail products covering casualty losses;

Read it in the 10-Q at sec.gov

Show the other 7
Added10-Q Oct 29, 2026 vs 10-K Feb 20, 2026
• disruption in our distribution channels, including the loss or disruption of our independent agency channel, and the impact of competition and consolidation in the industry and among agents and brokers;

Read it in the 10-Q at sec.gov

Added10-Q Oct 29, 2026 vs 10-K Feb 20, 2026
• changes in regulatory, legislative, economic, market and political conditions, particularly with respect to rates, policy terms and conditions, the use of artificial intelligence (“AI”) and other technologies, privacy and data security, payment flexibility, and regions where we have geographical concentration;

Read it in the 10-Q at sec.gov

Added10-Q Oct 29, 2026 vs 10-K Feb 20, 2026
• volatile and unpredictable developments, including severe weather (whether arising from changing climate conditions or weather patterns, or otherwise) and other natural physical events, catastrophes, pandemics, civil unrest, war, global conflicts, and terrorist actions, and the uncertainty in estimating the resulting losses;

Read it in the 10-Q at sec.gov

Added10-Q Oct 29, 2026 vs 10-K Feb 20, 2026
• limitations on the ability to adjust claims or the availability of sufficient information to accurately estimate a loss at a point in time and the limitations and assumptions used to model property and casualty losses in general;

Read it in the 10-Q at sec.gov

Added10-Q Oct 29, 2026 vs 10-K Feb 20, 2026
• risks related to our business being conducted in competitive markets, exposing us to increased risk from competitive pressures, including actions by competitors that may be larger or have greater financial resources than we do;

Read it in the 10-Q at sec.gov

Added10-Q Oct 29, 2026 vs 10-K Feb 20, 2026
• risks and uncertainties with respect to our ability to collect all amounts due from reinsurers and to maintain current levels of reinsurance in the future at commercially reasonable rates, or at all, particularly following large catastrophe events or disruptions in reinsurance markets;

Read it in the 10-Q at sec.gov

The first 12 of 18 are shown (at most 12 of each type).

Phrases used for the first time

Two-word phrases in Risk Factors of the 10-K filed Feb 20, 2026 that are in none of the 1 earlier 10-Ks stored, back to Feb 24, 2025

agents brokers ×4third-party suppliers ×2reputational damage ×2create unforeseen ×2coverage issues ×2distribution partners ×2catastrophe response ×2cybersecurity threats ×2incident affecting ×2third-party service ×2effectively manage ×2large-scale data ×2
Where each one is used
  • agents brokers: We and certain third-party partners rely on the continuous availability and proper functioning of our information technology systems and those of our third-party vendors to process, store, retrieve, evaluate, and use internal and external data and to perform necessary insurance functions. These functions include...
  • third-party suppliers: Risks Related to Technology, Information Security, Privacy and Third-Party Suppliers
  • reputational damage: If these systems are disrupted or become inaccessible to our employees, agents, brokers, or policyholders for an extended period, and if our disaster recovery or business continuity plans or those of our suppliers are inadequate or do not function as intended, our ability to conduct business could be impaired....
  • create unforeseen: Our inability to adapt to or implement new technologies, including artificial intelligence, could adversely affect our business and results of operations, and the use of new technologies may create unforeseen exposure or coverage issues.
  • coverage issues: Our inability to adapt to or implement new technologies, including artificial intelligence, could adversely affect our business and results of operations, and the use of new technologies may create unforeseen exposure or coverage issues.
  • distribution partners: We rely on a broad range of advanced technologies, including AI, to support our operations. As these technologies continue to rapidly evolve, our business could be adversely affected if we are unable to effectively adopt, update, integrate, or scale new capabilities in a timely or cost-effective manner. Competitors...
  • catastrophe response: We rely extensively on the security, integrity, and availability of our information technology systems and those of our agents, brokers, third-party administrators, claims vendors, catastrophe response partners, and other service providers to underwrite policies, price risk, service policyholders, adjust and pay...
  • cybersecurity threats: We rely extensively on the security, integrity, and availability of our information technology systems and those of our agents, brokers, third-party administrators, claims vendors, catastrophe response partners, and other service providers to underwrite policies, price risk, service policyholders, adjust and pay...

The 10-K at sec.gov

Used at least twice, small words left out. Counted, not picked: a phrase can be new because the company renamed something.

What was taken out

10 paragraphs of last year's Risk Factors with nothing like them now. The longest are quoted.

Across all companies
Our systems and the systems that we rely on, like others in the financial services industry, are vulnerable to cybersecurity risks, and we are subject to disruption and other adverse effects caused by such activities. Large corporations such as ours are subject to daily attacks on their systems and other vulnerabilities to data security incidents. These attacks and incidents have included, or may in the future include: unauthorized access, viruses, malware or other malicious code, ransomware, deceptive social engineering campaigns (also known as “phishing” or “spoofing”), loss or theft of...
In the 10-K filed Feb 24, 2025
We use technology systems to store, retrieve, evaluate and utilize customer and company data and information. Our internal and external information technology and telecommunications systems, in turn, interface with and rely upon third-party systems, including cloud-based data storage. Our business is highly dependent on our ability and the ability of certain third parties, to access these systems to perform necessary business functions, including, without limitation, providing insurance quotes, processing premium payments, making changes to existing policies, filing and paying claims,...
In the 10-K filed Feb 24, 2025
In addition, we may be adversely affected by liabilities resulting from our previous participation in certain voluntary property and casualty assumed reinsurance pools. We have terminated our participation in virtually all property and casualty voluntary pools, but we remain subject to claims related to the periods when we participated. The property and casualty industry’s assumed reinsurance businesses have suffered substantial losses during the past several years, particularly related to environmental and asbestos exposure for property and casualty coverages, in some cases resulting from...
In the 10-K filed Feb 24, 2025
The third parties with whom we work are also subject to these same risks, and we are vulnerable if a cybersecurity attack or other data security incident impacts a third-party vendor or service provider. Such an event could threaten to disrupt our business if the third party’s operations are compromised, or provide attackers an opportunity to exploit that compromise to pivot and attack our systems through the technical and operational relationships that we have with our trusted business partners. While we implement measures to protect against such events (e.g., utilizing secure...
In the 10-K filed Feb 24, 2025

Sources

Item 1A of each 10-K and 10-Q on EDGAR, quoted exactly. Each paragraph links to the filing at sec.gov.

Also

10-K change: what was reworded or cut, section by section.

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