X0609 4/A 2026-09-08 2026-09-08 0 0001304492 Anterix Inc. ATEX 0001669943 Ashe Gena L false 3 GARRET MOUNTAIN PLAZA SUITE 401 WOODLAND PARK NJ 07424 0 1 0 0 Chief Legal Officer & Corp Sec 0 Common Stock 2026-09-08 4 S 0 293 85.44 D 9238 D Common Stock 2026-09-08 4 M 0 6833 34.96 A 16071 D Common Stock 2026-09-08 4 F 0 2769 86.27 D 13302 D Common Stock 2026-09-08 4 S 0 4064 85.44 D 9238 D Stock Option (Right to Buy) 34.96 2026-09-08 4 M 0 6833 0 D 2035-05-20 Common Stock 6833 35658 D The Reporting Person exercised a stock option to purchase 6,833 shares of the Issuer's Common Stock for $34.96 per share and paid the exercise price on a cashless basis, resulting in the Issuer withholding an aggregate of 2,769 shares of the Issuer's Common Stock subject to the stock option to pay the exercise price and to satisfy its income tax withholding and remittance obligations in connection with the exercise of the stock option. The withholding of shares referenced here does not involve an open market sale of stock. The option shares subject to this option shall vest and become exercisable in three equal annual installments, with 1/3 of the option shares vesting and becoming exercisable on May 20, 2026, and with the remaining option shares vesting and becoming exercisable in 2 equal annual installments thereafter. /s/ Gena L. Ashe 2026-09-09