• Donegal Mutual Insurance Co boosted its stake in Donegal Group, buying 17,000 Class A common shares at prices ranging from $16.98 to $17.18.
• Class A common shares held rose to 13,988,281.
• Holding in Class B common stock stood at 4,751,974 shares.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Donegal Group Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0000935596-26-000006), on May 13, 2026, and is solely responsible for the information contained therein.