Note 7 — Equity Incentive Plan

In May 2013, the Company adopted the 2013 Equity Incentive Plan (as amended and restated, the “Plan”) and reserved shares of common stock for issuance under the Plan, which was last amended in June 2021. The Plan is administered by the Compensation Committee of the Company’s Board of Directors.At March 31, 2022, 412,945 shares of common stock were available for issuance under the Plan.

A summary of the Company’s stock option activity and related information is as follows:

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During the three months ended March 31, 2022, the Company granted 13,096 stock options to Board members and 10,000 stock options to employees under the Plan. The estimated fair value of these stock options, calculated using the Black-Scholes option valuation model, was $185,889, $29,998 of which was recognized during the three months ended March 31, 2022.

In January 2022, the Compensation of the Company’s Board of Directors (the “Board”) approved a modification of stock option grants to David Eisenhaure, the Company’s former Chairman of the Board, whom passed away in Octobor 2021. The modification extended the post-termination exercise period of his vested stock option grants from 12 months to 5 years. During the three months ended March 31, 2022, the Company recognized $49,327 of expense related to this modification.

At December 31, 2021 and March 31, 2022, there were 100,000 unvested restricted stock units (“RSUs”) outstanding. No RSUs were granted, vested or forfeited during the three months ended March 31, 2022.

At March 31, 2022, there was $1,650,209 of unrecognized compensation cost related to non-vested equity awards granted under the Plan. That cost is expected to be recognized over a weighted average period of 1.3 years.