EX-21.0 3 nssc-20250630xex21d0.htm EX-21.0

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EXHIBIT 21.0

Subsidiaries of the Company

The following are the Company’s subsidiaries as of the close of the fiscal year ended June 30, 2025. All beneficial interests are wholly-owned, directly or indirectly, by the Company and are included in the Company’s consolidated financial statements.

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Ayman Island | ​ | ​
Name |  | State or Jurisdiction of Organization
​ | ​ | ​
Alarm Lock Systems, LLC | ​ | Delaware
Continental Instruments, LLC | ​ | New York
Marks USA I LLC | ​ | New York
Napco Americas | ​ | Cayman Islands
Napco DR, S.A.S. | ​ | Dominican Republic
Napco Technologies International, Inc. | ​ | Delaware
Video Alert, LLC | ​ | New York

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