Notice of Securities Transaction by Director

Harry J. Harczak Jr., a director at Array Digital Infrastructure, Inc., acquired 1873 Common Shares on May 19, 2026, valued at $50.91 per share. This acquisition was made under a compensation plan for non-employee directors. Following this transaction, Mr. Harczak Jr. now holds 21,247 shares of the company's stock. The filing, documented on Form 4, was signed by John M. Toomey on May 20, 2026, under power of attorney.