X0609 4 2026-08-31 0001082324 VirnetX Holding Corp VHC 0001608933 Feiner Gary false C/O 308 DORLA COURT, SUITE 206 ZEPHYR COVE NV 89448 true false false false 1 Common Stock 2026-08-31 4 S 0 3749 11.172 D 20625 D Common Stock 2026-08-31 4 S 0 1 12.03 D 20624 D Common Stock 2026-09-01 4 S 0 3750 11.001 D 16874 D The sales reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on May 29, 2026. This sale price represents the weighted average sale price of the shares sold ranging from $11.00 to $11.615 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4. This sale price represents the weighted average sale price of the shares sold ranging from $10.63 to $11.545 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4. /s/ Kendall Larsen, Attorney-in-fact for Gary Feiner 2026-09-02