X0508 4/A 2026-02-19 2026-02-20 0 0000069633 NAPCO SECURITY TECHNOLOGIES, INC NSSC 0001253873 BUCHEL KEVIN S 333 BAYVIEW AVE AMITYVILLE NY 11701 1 1 0 0 President & COO 0 Common Stock 2026-02-19 4 M 0 50000 22.495 A 112739 D Common Stock 2026-02-19 4 F 0 33560 44.98 D 79179 D Employee Stock Option (Right to Buy) 22.495 2026-02-19 4 M 0 50000 22.495 D 2021-10-19 2031-10-19 Common Stock 50000 47584 D Employee Stock Option (Right to Buy) 26.94 2032-08-25 Common Stock 10000 10000 D Employee Stock Option (Right to Buy) 41.75 2034-05-02 Common Stock 50000 50000 D Represents the number of shares withheld by the Reporting Person as a result of the cashless exercise of stock options, and used to pay the exercise price and required tax withholdings in accordance with the 2012 Employee Stock Option Plan and stock option grant. Reflects a net increase of 16,440 shares resulting from the cashless exercise of 50,000 stock options as reflected in this Form. Exercisable with respect to 8,000 shares until August 24, 2032 and with respect to 2,000 shares from August 25, 2026 from August 25, 2026 until August 25, 2032. Exercisable, cumulatively, at 20% per year commencing May 2, 2024. This Form 4A is only to amend the disclosure related to the cashless exercise of stock options performed by the reporting person on February 19, 2026. The original Form 4 disclosed within Section 4 of Table 1 that 33,560 shares was indicated as (A) and was corrected to (D). Kevin Buchel 2026-02-20