X0609 4 2026-09-10 0001082324 VirnetX Holding Corp VHC 0001404771 Larsen Kendall false C/O 308 DORLA COURT ZEPHYR COVE NV 89448 true true true false President & CEO 1 Common Stock 2026-09-10 4 S 0 8000 11.483 D 352058 D Common Stock 2026-09-11 4 S 0 8000 11.373 D 344058 D Common Stock 2026-09-14 4 S 0 4425 11.174 D 339633 D Common Stock 74649 I By: Spouse Common Stock 30676 I By: The Kathleen Sheehan Revocable Trust dtd 2/5/2009 Common Stock 15000 I By: The K2 Investment Fund LLC 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 $11.06 to $11.99 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 $11.16 to $11.62 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 $10.71 to $11.60 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 2026-09-14