Form 4 Filing for Diamond Hill Investment Group Inc.

This Form 4 filing details a transaction by Hawley Austin, a director at Diamond Hill Investment Group Inc. On April 1, 2026, Mr. Austin disposed of 1,181 shares of common stock at a price of $172.10 per share. This disposal was made to cover taxes associated with the vesting of restricted stock awards. Following this transaction, Mr. Austin holds 77,469 shares of common stock. The filing was signed on April 6, 2026, by Carlotta D. King under power of attorney.