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Capital Structure | 12 Months Ended
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Dec. 31, 2021
Stockholders' Equity Note [Abstract] |
Capital Structure | Note 17 — Capital Structure On January 9, 2020, the Company increased its authorized number of shares to 53,000,000, consisting of: 50,000,000 shares of common stock, par value $0.001 per share, and 3,000,000 shares of preferred stock, par value $0.001 per share. At that time, it also designated 100,000 shares of the 3,000,000 authorized shares of preferred stock, par value $0.001 per share, as Series A Convertible Preferred Stock (“Series A Preferred Stock”). Series A Convertible Preferred Stock Beginning in the first quarter of 2020, the Company issued an aggregate of 60,000 shares of Series A Preferred Stock, for an aggregate purchase price of $6.0 million. In May 2020, the Company completed an offering of Series A Preferred Stock with the issuance of an additional 40,000 shares of Series A Preferred Stock for an aggregate purchase price of $4.0 million. Amendment of Conversion Formulas On January 11, 2021, the Company’s Board of Directors approved the amendment to the conversion formula of the Series A Preferred Stock and Notes. After the amendment:
| 1. | the Series A Preferred Stock is convertible, at any time after issuance or immediately prior to the closing of a public transaction, into common stock in an amount of shares equal to (i) the product of the Series A Preferred Stock original price plus accrued but unpaid dividends on the shares being converted, multiplied by the number of shares of Series A Preferred Stock being converted, divided by (ii) a conversion price of $7.72 per share (after the reverse split taking effect); and
| 2. | immediately prior to the consummation of a public transaction, the outstanding principal amount of the Notes together with all accrued and unpaid interest shall convert into a number of fully paid and non-assessable shares of common stock equal to the quotient of (i) the outstanding principal amount of the Notes together with all accrued and unpaid interest thereunder immediately prior to such public transaction divided by (ii) a conversion price of $7.72 (after the reverse split taking effect).
On January 11, 2021, the Company’s shareholders approved the amendment to the Series A Preferred Stock. Initial Public Offering On February 1, 2021, the Company completed an initial public offering (“IPO”) for the sale of 5,400,000 shares of common stock at a price of $10.00 per share. The Company also granted the underwriters: (a) a 45-day option to purchase up to 810,000 additional shares of common stock on the same terms and conditions for the purpose of covering any over-allotments in connection with the IPO, and (b) warrants to purchase 162,000 shares of common stock (equal to 3% of the aggregate number of shares of common stock issued in the IPO) at an exercise price of $12.50 per share (which is equal to 125% of the IPO price). Subsequently, the underwriters exercised the over-allotment option, and on February 4, 2021, the Company closed on the sale of an additional 810,000 shares of common stock for a price of $10.00 per share and granted to the underwriters warrants to purchase 24,300 additional shares of common stock (equal to 3% of the amount of shares issued as part of the exercised of the over-allotment option) at an exercise price of $12.50 per share. The exercise of the over-allotment option brought the total number of shares of common stock sold by the Company in connection with the IPO to 6,210,000 shares and the total net proceeds received in connection with the IPO to approximately $57.0 million, after deducting underwriting discounts and estimated offering expenses. Immediately prior to the closing of the Company’s IPO, all outstanding shares of Series A Preferred Stock and Notes were converted into 1,373,038 shares of common stock and 1,697,075 shares of common stock, respectively, at a conversion price of $7.72 per share. Subsequent Public Offering On February 19, 2021, the Company consummated a secondary public offering (the “February Offering”) for the sale of 5,555,555 shares of common stock for a price of $13.50 per share. The Company also granted the underwriters: (a) a 45-day option to purchase up to 833,333 additional shares of common stock on the same terms and conditions for the purpose of covering any over-allotments in connection with the February Offering, and (b) warrants to purchase 166,667 shares of common stock (equal to 3% of the aggregate number of shares of common stock issued in the February Offering) at an exercise price of $16.875 per share (which is equal to 125% of the February Offering). Subsequently, the underwriters exercised the over-allotment option, and on March 22, 2021, the Company closed on the sale of an additional 833,333 shares of common stock for a price of $13.50 per share and granted to the underwriters warrants to purchase 25,000 additional shares of common stock (equal to 3% of the amount of shares issued as part of the exercised of the over-allotment option) at an exercise price of $16.875 per share. The exercise of the over-allotment option brought the total number of shares of common stock sold by the Company in connection with the February Offering to 6,388,888 shares and the total net proceeds received in connection with the February Offering to approximately $80 million, after deducting underwriting discounts and estimated offering expenses. Underwriter Termination On September 14, 2021, the Company entered into a letter agreement and waiver (the “Letter Agreement”), to amend the terms of its underwriting agreement with the representative of the underwriters in the IPO. Pursuant to the Letter Agreement, the representative agreed to waive the right of first refusal included in the underwriting agreement in consideration of (i) a cash payment to the representative of $2.4 million and (ii) the right to participate as a co-manager with ten percent (10%) of the economics with respect to the Company’s next public offering of securities, payable in cash upon the closing of such offering. Stock Subscriptions Receivable The outstanding balance of the stock subscription was paid in January 2020. Issuance of Common Stock in Connection with Acquisitions On September 20, 2021, as part of the acquisition of HMH, the Company issued an aggregate of 8,000 shares of common stock to an executive of HMH for achieving certain milestones from the acquisition date through March 31, 2021. The common shares were valued at $176 thousand based on the Company’s closing stock price on September 20, 2021. The value of the shares is included in research and development in the condensed consolidated statements of operations. Refer to Note 13 – Business Combinations included elsewhere in the notes to the consolidated financial statements. On October 1, 2021, the Company issued an aggregate of 666,403 shares of its common stock to the Precision and Cascade shareholders in connection with the Company’s acquisition of Precision and Cascade. Refer to Note 13 – Business Combinations included elsewhere in the notes to the consolidated financial statements. On December 31, 2021, the Company issued an aggregate of 240,301 shares of its common stock to the PurePressure shareholders in connection with the Company’s acquisition of PurePressure. Refer to Note 13 – Business Combinations included elsewhere in the notes to the consolidated financial statements. Stock Option Plan On September 4, 2019, the Company adopted and approved the 2019 Stock Option Plan (the “2019 Plan”) which provided for the issuance of 1,743,744 shares of its common stock. On August 10, 2020 and October 8, 2020, the Company’s board of directors and stockholders, respectively, approved an increase to the maximum number of shares of common stock authorized for issuance over the term of the 2019 Plan from 1,743,744 shares to 3,355,083 shares. As of December 31, 2021, there are no shares available to be granted under the 2019 Plan. Prior to the consummation of the Company’s IPO, the Company cancelled the 2019 Plan and converted the outstanding stock options to the 2020 Plan, as more fully described below. Under the 2019 Plan, the standard vesting schedule provided that 25% of the options vest 12 months following issuance and the balance vests in 36 equal monthly installments thereafter. However, the Company’s board of directors was permitted to provide for alternative or accelerated vesting schedules in approving each stock option grant. In many cases, the Company’s Board of Directors included an accelerated vesting schedule under which 50% of the stock options granted vest immediately prior to a change of control transaction or the Company’s first underwritten public offering. 2020 Omnibus Equity Incentive Plan On December 18, 2020, the Company’s Board of Directors, and on January 11, 2021, the Company’s stockholders, adopted and approved the 2020 Omnibus Equity Incentive Plan (the “2020 Plan”), which replaced the 2019 Plan. The 2020 Plan provides for the grant of stock options, SARs, performance share awards, performance unit awards, distribution equivalent right awards, restricted stock awards, restricted stock unit awards and unrestricted stock awards to non-employee directors, officers, employees and non-employee consultants of the Company or its affiliates. The aggregate number of shares of common stock that may be reserved and available for grant and issuance under the 2020 Plan is 4,533,732 shares. Shares will be deemed to have been issued under the 2020 Plan solely to the extent actually issued and delivered pursuant to an award. If any award granted under the 2019 Plan or the 2020 Plan expires, is cancelled, or terminates unexercised or is forfeited, the number of shares subject thereto is again available for grant under the 2020 Plan. The 2020 Plan shall continue in effect, unless sooner terminated, until the tenth (10th) anniversary of the date on which it is adopted by the Board of Directors. Stock-based Compensation The Company’s stock option compensation expense was $5.6 million and $1.9 million for the years ended December 31, 2021 and 2020, respectively, and there was $3.7 million of total unrecognized compensation cost related to unvested options granted under the Company’s options plans as of December 31, 2021. This stock option expense will be recognized through 2025. The fair value of each option is estimated on the date of grant using the Black-Scholes option-pricing model. This model incorporates certain assumptions for inputs including a risk-free market interest rate, expected dividend yield of the underlying common stock, expected option life, and expected volatility in the market value of the underlying common stock. The following table summarizes the Company’s assumptions used in the valuation of options granted during the year ended December 31, 2021:
Volatility |  | 40%
Risk-free interest rate |  | 1.10% – 1.63%
Dividend yield |  | 0.00%
0% Expected life (years) |  | 10
Forfeiture rate |  | 0.00%
The following table summarizes the Company’s assumptions used in the valuation of options granted during the year ended December 31, 2020:
Volatility |  |  | 40% – 60% |
Risk-free interest rate |  |  | 0.37% – 0.78% |
Dividend yield |  |  | 0.00% |
0% Expected life (years) |  |  | 5 – 10 |
Forfeiture rate |  |  | 0.00% |
The Black-Scholes option-pricing model was developed for use in estimating the fair value of traded options, which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility. Because the Company’s stock options and warrants have characteristics different from those of its traded stock, and because changes in the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the existing models do not necessarily provide a reliable single measure of the fair value of such stock options. The risk-free interest rate is based upon quoted market yields for United States Treasury debt securities with a term similar to the expected term. The expected dividend yield is based upon the Company’s history of having never issued a dividend and management’s current expectation of future action surrounding dividends. The Company calculates the expected volatility of the stock price based on the corresponding volatility of the Company’s peer group stock price for a period consistent with the underlying instrument’s expected term. The expected lives for such grants were based on the simplified method for employees and directors. In arriving at stock-based compensation expense, the Company estimates the number of stock-based awards that will be forfeited due to employee turnover. The Company’s forfeiture assumption is based primarily on its turn-over historical experience. If the actual forfeiture rate is higher than the estimated forfeiture rate, then an adjustment will be made to increase the estimated forfeiture rate, which will result in a decrease to the expense recognized in the Company’s financial statements. If the actual forfeiture rate is lower than the estimated forfeiture rate, then an adjustment will be made to lower the estimated forfeiture rate, which will result in an increase to expense recognized in the Company’s financial statements. The expense the Company recognizes in future periods will be affected by changes in the estimated forfeiture rate and may differ significantly from amounts recognized in the current period. Stock Option Activity As of December 31, 2021, there were 311,823 shares available to be granted under the Company’s 2020 Plan. The following table presents option activity under the Company’s stock option plans for the years ended December 31, 2020 and 2021:
(Dollar Amounts, Excluding Exercise Price, in Thousands) |  | Number of Options |  |  | Weighted Average Exercise Price |  |  | Aggregate Intrinsic Value |
Options outstanding at December 31, 2019 |  |  | 493,102 |  |  | $ | 3.16 |  |  | $ | — |
Granted |  |  | 3,433,941 |  |  |  | 3.49 |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |
Forfeited/Expired/Cancelled |  |  | (793,934 | ) |  |  | 3.20 |  |  |  |  |
Options outstanding at December 31, 2020 |  |  | 3,133,109 |  |  | $ | 3.51 |  |  | $ | — |
Granted |  |  | 1,520,017 |  |  |  | 12.13 |  |  |  |  |
Exercised |  |  | (657,620 | ) |  |  | 3.23 |  |  |  |  |
Forfeited/Expired/Cancelled |  |  | (431,217 | ) |  |  | 3.98 |  |  |  |  |
Options outstanding at December 31, 2021 |  |  | 3,564,289 |  |  | $ | 7.18 |  |  | $ | 12,527 |
Options vested and exercisable as of December 31, 2021 |  |  | 1,841,558 |  |  | $ | 5.20 |  |  |  |  |
Options vested and expected to vest as of December 31, 2021 |  |  | 3,340,131 |  |  | $ | 7.04 |  |  |  |  |
The following table summarizes information about options vested and exercisable at December 31, 2021:
|  |  | Options Vested and Exercisable |
Price ($) |  |  | Number of Options |  |  | Weighted Average Remaining Contractual Life (Years) |  |  | Weighted Average Exercise Price |
$ | 2.28 |  |  |  | 790,497 |  |  |  | 8.39 |  |  | $ | 2.28 |
$ | 4.86 |  |  |  | 755,402 |  |  |  | 8.81 |  |  | $ | 4.86 |
$ | 13.84-$14.49 |  |  |  | 295,659 |  |  |  | 9.14 |  |  | $ | 13.86 |
The following table summarizes information about options expected to vest after December 31, 2021:
|  |  | Options Vested to Expected to Vest |
Price ($) |  |  | Number of Options |  |  | Weighted Average Remaining Contractual Life (Years) |  |  | Weighted Average Exercise Price |
$ | 2.28 |  |  |  | 1,023,122 |  |  |  | 8.39 |  |  | $ | 2.28 |
$ | 4.86 |  |  |  | 1,084,119 |  |  |  | 8.82 |  |  | $ | 4.86 |
$ | 7.68-$9.20 |  |  |  | 234,070 |  |  |  | 9.35 |  |  | $ | 7.96 |
$ | 13.84-$18.61 |  |  |  | 998,820 |  |  |  | 9.16 |  |  | $ | 14.05 |
Warrants As of December 31, 2021, warrants to purchase 271,844 shares of common stock were outstanding. The following table presents the Company’s warrant activity for the years ended December 31, 2021 and 2020:
|  | Number of Warrants |  |  | Weighted Average Exercise Price |
Warrants outstanding at December 31, 2019 |  |  | — |  |  | $ | — |
Granted |  |  | 828,171 |  |  |  | 0.02 |
Exercised |  |  | — |  |  |  | — |
Warrants outstanding at December 31, 2020 |  |  | 828,171 |  |  | $ | 0.02 |
Granted |  |  | 377,968 |  |  |  | 0.02 |
Exercised |  |  | (934,295 | ) |  |  | 0.02 |
Warrants outstanding at December 31, 2021 |  |  | 271,844 |  |  | $ | 0.02 |
The Company received proceeds from the exercise of warrants of $8 thousand during the year ended December 31, 2021. No warrants were exercised during the year ended December 31, 2020. Subsequent to December 31, 2021, the Company completed a private placement of our common stock and entered into a securities purchase agreement. Both of these arrangements include warrant issuance provisions. On January 25, 2022, the Company issued a total of 4,586,389 warrants in connection with the private placement entered into with an institutional investor and other accredited investors. The warrant issuance included 1,570,644 pre-funded warrants, with an exercise price of $0.001, and 3,015,745 warrants with exercise prices ranging between $6.80 and $6.90. On March 23, 2022, the Company issued a total of 6,881,108 warrants in connection with its entrance into a securities purchase agreement with an accredited investor. The warrants issued have an exercise price of $6.75. Refer to Note 23 – Subsequent Events included elsewhere in the notes to the consolidated financial statements.

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