Donegal Mutual Insurance Company (“Donegal Mutual”) organized us as an insurance holding company on August 26, 1986. Our insurance subsidiaries are Atlantic States Insurance Company (“Atlantic States”), Michigan Insurance Company (“MICO”), the Peninsula Insurance Group (“Peninsula”), which consists of The Peninsula Insurance Company and its wholly owned subsidiary Peninsula Indemnity Company, and Southern Insurance Company of Virginia (“Southern”). Our insurance subsidiaries and their affiliates write property and casualty insurance exclusively through a network of independent insurance agents in certain Mid-Atlantic, Midwestern, Southern and Southwestern states.

At June 30, 2026, we had three segments: our investment function, our commercial lines of insurance and our personal lines of insurance. The commercial lines products of our insurance subsidiaries consist primarily of commercial automobile, commercial multi-peril and workers’ compensation policies. The personal lines products of our insurance subsidiaries consist primarily of homeowners and private passenger automobile policies.

At June 30, 2026, Donegal Mutual held approximately 45% of our outstanding Class A common stock and approximately 85% of our outstanding Class B common stock. This ownership provides Donegal Mutual with approximately 71% of the total voting power of our common stock. Our insurance subsidiaries and Donegal Mutual have interrelated operations due to a pooling agreement and other intercompany agreements and transactions. While each company maintains its separate corporate existence, our insurance subsidiaries and Donegal Mutual conduct business together as the Donegal Insurance Group. As such, Donegal Mutual and our insurance subsidiaries share the same business philosophy, the same management, the same employees and the same facilities and offer the same types of insurance products.

Atlantic States, our largest subsidiary, participates in a proportional reinsurance agreement (the “pooling agreement”) with Donegal Mutual. Under the pooling agreement, Donegal Mutual and Atlantic States contribute substantially all of their respective premiums, losses and loss expenses to the underwriting pool, and the underwriting pool, acting through Donegal Mutual, then allocates 80% of the pooled business to Atlantic States. Thus, Donegal Mutual and Atlantic States share the underwriting results of the pooled business in proportion to their respective participation in the underwriting pool.

In addition, Donegal Mutual has 100% quota-share reinsurance agreements with Mountain States Commercial Insurance Company, Mountain States Indemnity Company and Southern Mutual Insurance Company. Donegal Mutual places its assumed business from these companies into the underwriting pool.

The same executive management and underwriting personnel administer products, classes of business underwritten, pricing practices and underwriting standards of Donegal Mutual and our insurance subsidiaries. In addition, as the Donegal Insurance Group, Donegal Mutual and our insurance subsidiaries share a combined business plan to achieve market penetration and underwriting profitability objectives. The products our insurance subsidiaries and Donegal Mutual market are generally complementary, thereby allowing the Donegal Insurance Group to offer a broader range of products to a given market and to expand the Donegal Insurance Group’s ability to service an entire personal lines or commercial lines account. Distinctions within the products of Donegal Mutual and our insurance subsidiaries generally allow the individual companies to manage certain risk segments through variations in coverage, terms and pricing. Therefore, the underwriting profitability of the business the individual companies write directly will vary. However, the underwriting pool homogenizes the risk characteristics of all business that Donegal Mutual and Atlantic States write directly. The business Atlantic States derives from the underwriting pool represents a significant percentage of our total consolidated revenues.

In September 2025, Donegal Mutual and Southern entered into a renewal rights agreement with an affiliate of a farm-focused Pennsylvania-based mutual insurance group to provide a continuation option for their farm policyholders when they began to non-renew all farm policies as they started to expire beginning in the second quarter of 2026. Donegal Mutual and Southern determined that the costs required to modernize their legacy farm product and systems were higher than the projected return on investment for this non-core line of business that represents approximately $6 million in annual premiums. None of our other insurance subsidiaries offered farm policies. We currently include farm policies within other commercial lines in our line of business reporting.