ATN International 10% Owner Cornelius B. Prior Jr. Gift Transaction

This SEC Form 4 filing reports a gift transaction by Cornelius B. Prior Jr., a greater than 10% owner of ATN International, Inc. On April 17, 2026, Prior gifted 1,700 shares of ATN International common stock at $0 per share, reducing his direct holdings to 4,174,303 shares. The transaction was coded as a gift (transaction code "G"). The filing also discloses Prior's indirect holdings through various entities: 500 shares held by his wife, 8,227 shares held by Tropical Aircraft Co., and 363,424 shares held as trustee of a revocable trust. Following this gift transaction, Prior's total beneficial ownership position in ATN International remains substantial, with both direct and indirect holdings totaling approximately 4,546,454 shares.