RLI CORP

This Proxy Statement Summary (“Summary”) highlights information contained in this Proxy Statement, the Annual Report on Form 10-K, or on our website at www.rlicorp.com. This Summary does not contain all the information you should consider, so please read the entire Proxy Statement carefully before voting. For more information regarding our 2025 performance, please review the Annual Report on Form 10-K for the year ended December 31, 2025, a copy of which is available at the Investors section of our website at www.rlicorp.com.

MATTERS TO BE VOTED ON:

The following is a summary of the proposals to be voted on at the Annual Meeting and the Board’s voting recommendations with respect to each proposal:

CORPORATE GOVERNANCE HIGHLIGHTS:

BOARD COMPOSITION & EXPERIENCE:

Our Directors bring a balance of skills, qualifications, and experience to their oversight of our Company. The matrix on the following page identifies certain skills, qualifications, and experience of Directors that the Board believes are relevant to our business; support sound governance; and are aligned with the Company’s strategic plans. These skills, qualifications, and experience may have been gained through job experience, other board service, education or otherwise and do not necessarily indicate a given Director is a subject matter expert where indicated. A Director may possess other skills, qualifications, and experience not indicated in the matrix that may be relevant and valuable to their service on our Board.

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COMPANY HIGHLIGHTS

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2025 FINANCIAL PERFORMANCE

FINANCIAL RESULTS:

As a result of the efforts of our associates, we achieved outstanding financial results in 2025. These results included posting an 83.6 combined ratio, which marked our 30th consecutive year of underwriting profit; delivering return on equity of 23.7 percent, a testament to our sustained profitability; growing book value per share by 33 percent during the year, inclusive of dividends; and continuing to reward shareholders through regular dividends and a $2.00 per share special dividend which resulted in returning $184 million to shareholders in 2025 and paying more than $1.6 billion in dividends over the last 10 years.

FINANCIAL STRENGTH:

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SUSTAINABLE BUSINESS PRACTICES

The Company is a specialty underwriting company and our financial performance starts with our entrepreneurial and ownership culture. We are steadfast in our belief that to deliver strong returns for our shareholders, we must also remain a sustainable organization. Our approach to sustainability reflects our focus on doing the right thing – for our customers, our employees, our communities, and the environment. With that philosophy guiding our efforts, we are committed to continue integrating sound and relevant sustainable business practices into our business. Additional detail on how we are integrating these principles into our work can be found in our Sustainability Report which can be viewed at www.rlicorp.com/sustainability.

Ethical Business Conduct:

Our Code of Conduct, which applies to all employees and Directors, provides guidance on ethical business behavior to support our strong reputation as a leading specialty property and casualty insurance company. Annually, employees and Directors are asked to read, understand, agree to comply with the Code and other Company policies, and confirm they have complied with the Code in the last year. No waiver of the Code was made in 2025 for any executive or Director. We also maintain a Third-Party Code of Conduct for our suppliers, vendors, consultants, and business partners to communicate ethical business standards under which third-parties are expected to operate when providing goods and services to the Company.

Talented Workforce:

The Company strives to cultivate a talented workforce to perpetuate our ownership culture, deliver excellent customer service and continue to achieve superior business results. Our goal is to attract, develop and retain the best talent with a variety of experiences, perspectives and skillsets, while promoting a culture where different viewpoints are valued and individuals feel respected, are treated fairly and have an opportunity to excel in their chosen careers. Our Total Rewards program is designed to attract the best talent in the industry and we strive to help all employees realize their potential through training, mentoring and professional development.

The Company believes in fostering an open and collaborative workplace that encourages employees to take ownership of their performance and development. We consistently track employee engagement and satisfaction metrics, along with other workforce data and insights, to assess the health of our workforce culture on an ongoing basis and make improvements based on employee feedback. Every two years, we conduct an employee engagement survey. Results from RLI’s last employee engagement survey reflected strong employee engagement scores exceeding a finance and insurance benchmark.

Environmental Stewardship:

Information on the Company’s environmental stewardship and climate change-related risk management can be found at www.rlicorp.com/environment.

The Company has demonstrated its commitment to a renewable future through its $5 million investment in a 1.8-megawatt solar field on our corporate campus in Peoria, Illinois. Located on six and a half acres, the 4,752-panel solar field is capable of producing annual electrical power equal to or exceeding annual electrical usage for our office buildings in Peoria, which house approximately 40% of our workforce.

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RLI Corp. | 9025 N. Lindbergh Drive | Peoria, Illinois 61615

PROXY STATEMENT

Annual Meeting of Shareholders to be held May 14, 2026