Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from: to . Commission file number: 1-13754 THE HANOVER INSURANCE GROUP, INC. (Exact name of registrant as specified in its charter) Delaware 04-3263626 (State or ...

Financial Data and Key Metrics Changes - The company reported operating income per share of $5.53 and an operating return on equity of 6.7% for the full year, reflecting the inflationary economic environment and significant catastrophe activity in Q4 [13][35] - The full year combined ratio, excluding catastrophes, was 92.1%, towards the lower end of the guidance provided in the previous quarter [14][35] - The expense ratio improved to 30.8% for the full year, a 50 basis point improvement from 2021, driven by fixed cost leverage from growth and lower-than-expected variable compensation [36][35] Business Line Data and Key Metrics Changes - Personal Lines achieved a pricing increase of 10% in Q4, with retention solidly above 86% [21][22] - Core Commercial pricing increased by 11% in Q4, with expectations for even higher increases in 2023 [23][49] - Specialty Lines delivered a combined ratio of 89.3% for the full year, with an 11% increase in annual premiums [29][52] Market Data and Key Metrics Changes - The company experienced catastrophe losses of $190 million in Q4, with winter storm Elliott accounting for approximately $165 million [43] - The underlying loss ratio increased to 63.3% in Q4, reflecting higher loss costs due to inflation and property large losses [45] - The company expects net written premium growth in the mid-single digits for 2023, driven by growth in profitable businesses [68] Company Strategy and Development Direction - The company is focused on regaining top-tier margins in Personal and Core Commercial property lines through enhanced pricing, insurance-to-value adjustments, and targeted underwriting measures [20][27] - The strategic priorities for 2022 included expanding the specialty business, investing in technology, and deepening agency partnerships [28] - The company aims to leverage innovative technology for risk solutions and mitigation, enhancing underwriting decisions and preventing claims [17][19] Management's Comments on Operating Environment and Future Outlook - Management acknowledged the challenges posed by inflation, supply chain disruptions, and changing weather patterns, emphasizing the need for disciplined underwriting and pricing strategies [12][16] - The outlook for 2023 includes expectations for solid operating performance and meaningful improvement from 2022, with a focus on margin growth [72] - Management expressed confidence in the company's ability to navigate the dynamic environment and deliver long-term value for stakeholders [33][72] Other Important Information - The company completed its multi-line casualty reinsurance renewals with limited changes and at acceptable prices [61][129] - The Board of Directors approved an 8% increase in the company's quarterly dividend, reinforcing commitment to shareholder value [67] Q&A Session Summary Question: Update on loss cost inflation - Management noted no material lift in medical inflation but is monitoring liability trends closely, incorporating increased lawyer involvement and medical procedure costs into their expectations for 2023 [75][77] Question: Changes in property inflation - Management indicated that there has not been a material step down in property inflation and is watching for any potential changes [78] Question: Guidance on catastrophe loss ratio - The company is comfortable with the 5.1% catastrophe load for 2023, attributing it to actions taken to reduce volatility [97] Question: Premium growth expectations - Management expects slower growth in Personal Lines due to pricing changes but remains optimistic about Specialty Lines and Small Commercial [99][101] Question: Retention metrics in Personal Lines - Management emphasized the importance of monitoring retention metrics closely and adjusting pricing as necessary to maintain stability [105][106] Question: New money rates - Management estimated new money rates to be in the range of 4.75% to 5% [107] Question: Outlook for umbrella loss cost trends - Management has not observed significant changes in umbrella loss costs but is monitoring the implications of social inflation [131]

(1) Combined ratio, excluding catastrophes, and current accident year combined ratio, excluding catastrophes, are non-GAAP measures. The combined ratio (which includes catastrophe losses and prior-year loss reserve development) is the most directly comparable GAAP measure. This and other non-GAAP measures are used throughout this document. See the disclosure on the use of this and other non-GAAP measures under the heading "Forward-Looking Statements and Non-GAAP Financial Measures." A reconciliation of the ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-13754 THE HANOVER INSURANCE GROUP, INC. (Exact name of registrant as specified in its charter) Delaware 04-3 ...

Financial Data and Key Metrics Changes - For Q3 2022, after-tax operating income was $35.7 million or $0.99 per share, with a combined ratio of 101% reflecting higher than expected inflation and supply chain pressures [22][40] - The combined ratio excluding catastrophes was 94.2%, with catastrophe losses of $90 million impacting net earned premium [22][40] - The company achieved a return on equity (ROE) of 10.5% year-to-date, with net written premium growth of 9.5% in the quarter [14][22] Business Line Data and Key Metrics Changes - Core commercial business grew by 5.9%, driven by renewable price increases of 11.2% [14][25] - Specialty segment achieved growth of 12.6%, with robust rate increases of 8% across its portfolio [15][29] - Personal Lines grew net written premiums by 11.3%, with an average renewal pricing increase of 7.3% [16][30] Market Data and Key Metrics Changes - The company noted that inflation and supply chain issues were pervasive, impacting all primary insurers [20][22] - The market for Personal Lines is experiencing one of the hardest conditions in history, with expectations for continued firming [20][22] Company Strategy and Development Direction - The company is focused on restoring underwriting margins to target levels and achieving long-term financial targets [41][40] - Strategic actions include aggressive pricing increases, insurance to value adjustments, and targeted underwriting measures to address current market challenges [18][19][20] - The company aims to leverage its strong agent partnerships and diversified portfolio to enhance profitability [15][20] Management's Comments on Operating Environment and Future Outlook - Management acknowledged the impact of Hurricane Ian and ongoing macroeconomic challenges, including inflation and supply chain disruptions [11][12] - The company remains confident in its ability to manage risks and achieve long-term profitability despite short-term challenges [13][21] - Future expectations include a combined ratio excluding catastrophes in the range of 92% to 92.5% for the full year 2022 [40] Other Important Information - The company reported net investment income of $73 million for the quarter, benefiting from higher new money yields [36][39] - Statutory capital remained relatively unchanged at $2.7 billion, with a disciplined approach to capital management [39] Q&A Session Summary Question: Can you expand on the improvement in the expense ratio? - The improvement was driven by earned premium growth and reduced incentives, with some elements being sustainable and others potentially one-time [46][48] Question: Update on the Specialty business and cross-selling opportunities? - Success in Specialty comes from both existing and new customers, with significant cross-selling opportunities being realized [49][51] Question: Clarification on inflationary pressures and their impact? - Inflation assumptions were revised, particularly in auto and home segments, leading to higher loss ratios [54][55] Question: Expectations for claims inflation moderation? - The company is cautious but optimistic about managing claims inflation through pricing and underwriting actions [57][60] Question: Risks in the Specialty segment due to inflation? - The diversified nature of the Specialty portfolio helps mitigate risks associated with inflationary pressures [68][69] Question: Core commercial lines pricing acceleration? - The company is seeing good pricing across property coverages, with a focus on maintaining strong rates [76][78] Question: Specialty retention trends? - Retention remains robust, though there may be slight quarter-over-quarter variances due to the nature of the products [86][87] Question: Barriers to taking rate in difficult states? - The company feels confident in its ability to take rate in various states without significant barriers [88][89]

The Hanover Insurance Group, Inc. Third Quarter 2022 Results November 2, 2022 To be read in conjunction with the press release dated November 1, 2022, and conference call scheduled for November 2, 2022 Third Quarter 2022 Operating Highlights • Combined ratio of 101.0%; combined ratio, excluding catastrophes(1), of 94.2% • Catastrophe losses of $90.1 million, or 6.8 points of the combined ratio, including the impact from Hurricane Ian of $28.0 million • Net premiums written increase of 9.5%*, with contributi ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-13754 THE HANOVER INSURANCE GROUP, INC. (Exact name of registrant as specified in its charter) Delaware 04-326362 ...

The Hanover Insurance Group, Inc. Second Quarter 2022 Results August 3, 2022 To be read in conjunction with the press release dated August 2, 2022, and conference call scheduled for August 3, 2022 Second Quarter Operating Highlights The Hanover Reports Second Quarter Net Income and Operating Income(1) of $0.63 and $2.32 per Diluted Share, Respectively; Combined Ratio of 96.2%; Combined Ratio, Excluding Catastrophes(2), of 90.2% • Net premiums written increase of 10.4%*, with strong growth from each segment ...

The Hanover Insurance Group, Inc. (NYSE:THG) Q2 2022 Earnings Conference Call August 3, 2022 10:00 AM ET Company Participants Oksana Lukasheva - VP, IR & Financial Planning John Roche - President and Chief Executive Officer Jeffrey Farber - Executive Vice President and Chief Financial Officer Bryan Salvatore - Executive Vice President and President of Specialty Richard Lavey - Executive Vice President and President, Hanover Agency Markets Conference Call Participants Matt Carletti - JMP Securities Meyer Shi ...

Hanover Insurance Group, Inc. (NYSE:THG) Q1 2022 Earnings Conference Call May 4, 2022 10:00 AM ET Company Participants Oksana Lukasheva - VP, IR & Financial Planning John Roche - President, CEO & Director Jeffrey Farber - EVP & CFO Richard Lavey - EVP & President, Hanover Agency Markets Bryan Salvatore - EVP & President of Specialty Conference Call Participants Matthew Carletti - JMP Securities Meyer Shields - KBW Grace Carter - Bank of America Merrill Lynch Bob Farnam - Boenning and Scattergood Operator Go ...