Stock-Based Compensation	3 Months Ended
Stock-Based Compensation	Mar. 31, 2025
Stock-Based Compensation [Abstract]
Stock-Based Compensation	Note 5 — Stock-Based Compensation Our stockholders approved the Amended and Restated Equity Incentive Plan (the “A&R Plan”) at our annual shareholders’ meeting in June 2024, which added 1,000,000 shares to the plan. Our prior plan expired March 29, 2023; no further awards will be made under the prior plan, and the A&R Plan will govern awards granted under the prior plan. The A&R Plan provides for the granting of stock options, restricted stock units (“RSUs”) and restricted stock. Options granted under the A&R Plan are granted with an exercise price equal to the fair value of the of our stock on the date of grant. RSUs and restricted stock are granted at the fair value of our stock on the date of grant because they have no exercise price. The fair value of options, RSUs and restricted stock are expensed over the vesting periods. All options, RSUs and restricted stock are subject to forfeiture if service terminates prior to the shares vesting. At March 31, 2025, there were 576,305 shares available for grant under the A&R Plan. Stock-based compensation expense included in general and administrative expense was $190 and $230, and in research and development expense was $242 and $258, for the three months ended March 31, 2025 and 2024, respectively. No awards were granted during the three months ended March 31, 2025. During the three months ended March 31, 2024, we granted 71,000 shares of restricted stock with a weighted average grant date fair value of $6.80 per share, and paid $3 in withholding taxes, which is reflected as financing costs in the accompanying statement of cash flows; the grantees surrendered shares equal to the value of witholding taxes due, and those surrendered shares were cancelled. As of March 31, 2025 and 2024, the unrecognized stock-based compensation expense related to unvested awards (including stock options, RSUs, and restricted stock) was $3,999 and $2,757, respectively, which will be amortized over an estimated weighted average period of approximately 3.26 years and 2.63 years, respectively. During the three months ended March 31, 2025, we returned 1,250 options to the plan due to cancellation of unexercised options.

VirnetX Holding Corp 10-Q