EX-32.1 12 ef20060835_ex32-1.htm EXHIBIT 32.1

EXHIBIT 32.1
CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Annual Report of VirnetX Holding Corporation (the “Company”) on Form 10-K for the fiscal year ended December 31, 2025 as filed with the Securities and Exchange Commission on March 24, 2026 (the “Report”), I, Kendall Larsen, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

| (1) | The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

| (2) | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

| /s/ Kendall Larsen
| Kendall Larsen
| President and Chief Executive Officer
| (Principal Executive Officer)
Date: March 24, 2026 |