5. SHARE CAPITAL

Common shares

Common shares: 900,000,000 authorized; $0.001 par value. As of June 30, 2021 and December 31, 2020, there were 58,692,701 and 56,378,939 common shares issued and outstanding (“Common Shares”), respectively.

Acquisition shares

In connection with the acquisition of the Sentry Neuromonitoring, LLC (the “Seller”) assets, we issued to Seller or the Principals, as elected by Seller, shares of common stock of the Registrant with a value of $1,625,000, determined on the Effective Date, as quoted on the TSX Venture Exchange (1,186,129 shares of common stock).  In addition, the Registrant agreed to escrow, no event later than May 14, 2021, with an escrow agent, mutually selected by Purchaser and Seller, common stock of the Registrant with a value of $650,000 (474,452 shares of common stock).  The common stock is subject to a 12-month lock up beginning on the date actually delivered to Seller or the Principals. See Note 7 for a complete discussion.

Share issuance

In connection with common share purchase agreements, during June 2020, the Company issued 780,162 shares of common stock at a deemed value of $0.80 per share to certain employees, directors and third parties.

Convertible debt

During the second quarter of 2021, a holder of the convertible debenture exercised the right to convert the outstanding principal into common shares at an exercise price of $1.40, resulting in the issuance of 52,633 common shares.  

Stock options

On December 10, 2020, our shareholders approved amendments to the Company’s stock option plan, which amended the plan previously approved on November 20, 2019 (the “Amended Stock Option Plan”). As of June 30, 2021, an aggregate of 5,659,878 shares of common stock (10% of the issued and outstanding shares of common stock) were available for issuance under the Amended Stock Option Plan. Of this amount, stock options in respect of 5,120,500 common shares have been issued.

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Options under the Plan are granted from time to time at the discretion of the Board of Directors, with vesting periods and other terms as determined by the Board of Directors.

A summary of the stock option activity is presented below:

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The following table summarizes information about stock options outstanding and exercisable under the Company’s Stock Option Plan at June 30, 2021:

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The Company uses the Black-Scholes option pricing model to determine the estimated fair value of options. The fair value of each option grant is determined on the date of grant and the expense is recorded on a straight-line basis and is included as a component of general and administrative expense in the consolidated statements of operations. The assumptions used in the model include expected life, volatility, risk-free interest rate, dividend yield and forfeiture rate. The Company’s determination of these assumptions are outlined below.

Expected life — The expected life assumption is based on an analysis of the Company’s historical employee exercise patterns.

Volatility — Volatility is calculated using the historical volatility of the Company’s common stock for a term consistent with the expected life.

Risk-free interest rate — The risk-free interest rate assumption is based on the U.S. Treasury rate for issues with remaining terms similar to the expected life of the options.

Dividend yield — Expected dividend yield is calculated based on cash dividends declared by the Board for the previous four quarters and dividing that result by the average closing price of the Company’s common stock for the quarter. The Company has not declared a dividend to date.

Forfeiture rate — The Company does not estimate a forfeiture rate at the time of the grant due to the limited number of historical forfeitures. As a result, the forfeitures are recorded at the time the grant is forfeited.

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There were no stock option grants during the three and six months ended June 30, 2020.The following assumptions were used to value the awards granted during the three and six months ended June 30, 2021:

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Stock-based compensation expense recognized in our consolidated financial statements for the three months ended June 30, 2021 and 2020 was $163 thousand and $327 thousand, respectively, and $607 and $368 for the six months ended June 30, 2021 and 2020, respectively. As of June 30, 2021, there was approximately $947 thousand of total unrecognized compensation cost related to 2,251,333 unvested stock options that is expected to be recognized over a weighted-average remaining vesting period of 2.4 years.

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Warrants

As of June 30, 2021 and December 31, 2020, there were 19,700,028 and 18,325,028 warrants outstanding, respectively.

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