ATN International 10% Owner Cornelius B. Prior Jr. Sells 5,000 Shares

Cornelius B. Prior Jr., a greater than 10% owner of ATN International, Inc. (ATNI), filed a Form 4 disclosing the sale of 5,000 shares of common stock on June 29, 2026. The sales occurred in five separate transactions at prices ranging from $27.52 to $27.86 per share, totaling approximately $138,000. Following these transactions, Prior maintains significant ownership in ATNI through various entities including direct holdings of 3,994,303 shares, indirect holdings through VI E-Cell Tropical Telecom Ltd (81,436 shares), a revocable trust (363,424 shares), Tropical Aircraft Co. (8,227 shares), and his wife (500 shares). The filing represents routine insider trading activity by a major shareholder.