EX-32.1 4 nssc-20250930xex32d1.htm EX-32.1

EXHIBIT 32.1

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CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

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In connection with the Quarterly Report of Napco Security Technologies, Inc. (the “Company”) on Form 10-Q for the period ending September 30, 2025, filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, RICHARD L. SOLOWAY, Chief Executive Officer of the Company, certify, that to the best of my knowledge, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

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Dated: November 3, 2025

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/s/RICHARD L. SOLOWAY | ​
Richard L. Soloway, Chief Executive Officer | ​

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This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

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CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

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In connection with the Quarterly Report of Napco Security Technologies, Inc. (the “Company”) on Form 10-Q for the period ending September 30, 2025, filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, ANDREW J. VUONO, Chief Financial Officer of the Company, certify, that to the best of my knowledge, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

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Dated: November 3, 2025

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/s/ANDREW J. VUONO | ​
Andrew J. Vuono, Chief Financial Officer & Chief Accounting Officer | ​

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This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

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A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.