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Equity | 6 Months Ended
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Jun. 30, 2021
Equity |
Equity | Note 6 – Equity Common Stock and Preferred Stock The Company is authorized to issue 62,500,000 shares of common stock and 2,000,000 shares of preferred stock. Preferences, limitations, voting powers and relative rights of any preferred stock to be issued may be determined by the Company’s Board of Directors. The Company has not issued any shares of preferred stock. During the six months ended June 30, 2021, the Company issued common stock pursuant to our At-The-Market Offering Sales Agreement, dated December 23, 2020, with Virtu Americas LLC, as sales agent pursuant to which it may sell shares of common stock with an aggregate offering price of up to $15,000,000 (the “ATM”). As of June 30, 2021, the Company had sold 1,092,570 shares of our common stock under the ATM program, at an average price of $5.03 per share. Gross proceeds totaled approximately $5.5 million and net cash proceed was approximately $5.3 million. Equity Incentive Plan On June 17, 2021 the Company’s shareholders approved and the Company adopted the ClearSign Technologies Corporation 2021 Equity Incentive Plan (the “Plan”) which permits the Company to grant to eligible participants, including officers, employees, directors, consultants and advisors, options to purchase shares of common stock, stock awards and stock bonuses. The Compensation Committee of the Board of Directors is authorized to administer the Plan and establish the grant terms, including the grant price, vesting period and exercise date. As of June 30, 2021 the number of shares of common stock reserved for issuance under the Plan totaled 3,125,466 plus 3,381,369 shares of common stock subject to issued and outstanding awards under the 2011 Equity Incentive Plan (“2011 Plan”), which expired in January 2021. During the six months ended June 30, 2021, the Company granted stock options for the purchase of an aggregate 885,000 shares of common stock to employees from the 2011 Plan. 80,000 of these options were awarded for 2020 bonuses in lieu of cash and the expense of $192,000 was recorded during the year ended December 31, 2020. The remaining 805,000 options were awarded during the six months ended June 30, 2021 with vesting dependent on the achievement of certain performance objectives. The fair values of these options totaled $1.9 million. The following weighted-average assumptions were utilized in the calculation of the fair value of the stock options: ​
​ | ​ | ​ | ​
2021 Employee Awards |  | 2021 | ​
Expected life |  | 5.75 | years
Weighted average volatility |  | 94 | %
Forfeiture rate |  | 0 | %
Weighted average risk-free interest rate |  | 0.47 | %
Expected dividend rate |  | 0 | %
​ Outstanding stock option awards at June 30, 2021 and December 31, 2020 totaled 3,309,651 shares and 2,697,119 shares, respectively, with the right to purchase 2,518,403 shares and 2,379,752 shares being vested and exercisable at June 30, 2021 and December 31, 2020, respectively. The recognized compensation expense associated with stock option awards for the three and six months ended June 30, 2021 and 2020 totaled $19,000 and $429,000 and $48,000 and $115,000 respectively. At June 30, 2021, there was $182,000 of total unrecognized compensation cost related to performance incentive awards that are probable of vesting and another $1.3 million in performance incentive awards that are currently deemed as not probable of vesting related to share based compensation arrangements awarded under the prior Plan. The cost of the awards in which vesting was assessed as probable is expected to be recognized over a weighted average period of 1 year. Awards for which vesting was assessed as not probable will be reassessed at the end of each reporting period. The intrinsic value of outstanding stock options was $8.1 million at June 30, 2021. The Company’s directors are compensated solely in stock option awards for services rendered in the first quarter of 2021. In addition to being compensated for their services as directors, individual directors are also compensated for committee membership, for services as a committee chair and for services as a lead director. On January 22, 2021 and July 28, 2021, the Company awarded from the Plan to certain directors’ stock options for the purchase of 79,500 shares of common stock as payment for services rendered to the Company in the first quarter of 2021. The stock options have an exercise price based on the grant date fair value, which was $3.97 for 62,500 shares and $4.15 for 17,000 shares. All of the options have a contractual life of 10 years. The recognized compensation expense associated with director stock option awards for the three and six months ended June 30, 2021 and 2020 totaled $52,000 and $262,000 and $34,000 and $87,000, respectively. The following weighted-average assumptions were utilized in the calculation of the fair value of the stock options: ​
​ | ​ | ​ | ​
2021 Director Awards | ​ | 2021 | ​
Weighted average expected life | ​ | 8.93 | years
Weighted average volatility | ​ | 90 | %
Forfeiture rate | ​ | 0 | %
Weighted average risk-free interest rate | ​ | 1.02 | %
Expected dividend rate | ​ | 0 | %
​ Restricted Stock Units On July 28, 2021, the Company approved compensation for board service to be paid to its independent directors in restricted stock units (“RSUs”) that will be awarded from the 2021 Plan. Such compensation will be on a quarterly basis beginning in the second quarter of 2021 through the end of 2021. For second quarter services, the fair value of the RSUs aggregated to $84,000, which was recorded in general and administrative expense and accounts payable and accrued liabilities as of and for the three months ended June 30, 2021. The quantity of these RSUs issued will be determined using the closing price of the Company’s common stock two days after its second quarter 10-Q is filed. ​ Stock Grants During the six months ended June 30, 2021, the Company issued 64,439 shares of common stock with a fair value of $3.37 per share to its employees. These shares were issued for payment of 2020 bonuses in lieu of cash and the expense of $217,000 was recorded during the year ended December 31, 2020. Consultant Stock Plan The Company has a Consultant Stock Plan (the Consultant Plan) which provides for the granting of shares of common stock to consultants who provide services related to capital raising, investor relations, and making a market in or promoting the Company’s securities. The Company’s officers, employees, and board members are not entitled to receive awards from the Consultant Plan. The Compensation Committee of the Board of Directors is authorized to administer the Consultant Plan and establish the grant terms. The number of shares reserved for issuance under the Consultant Plan on June 30, 2021 totaled 297,719 with 215,719 of those shares unissued. The Consultant Plan provides for quarterly increases in the available number of authorized shares equal to the lesser of 1% of any new shares issued by the Company during the quarter immediately prior to the adjustment date or such lesser amount as the Board of Directors shall determine. The Company granted 10,000 shares of common stock to a consultant under the Consultant Plan for contracted services performed during the period from August 13, 2019 to August 31, 2020. The fair value of the stock at the time of grant was $1.03 per share for a total value of $10,000, which the Company recognized on a quarterly pro-rated basis as to 2,500 shares in general and administrative expense. The contract was renewed, and the consultant was granted an additional 15,000 shares for services performed from September 1, 2020 through August 31, 2021. The fair value of the stock at the time of grant was $2.33 per share for a total value of $35,000, which the Company is recognizing 3,750 shares in general and administrative expense on a quarterly pro-rated basis. The Consultant Plan expense for the three and six months ended June 30, 2021 and 2020 was $9,000 and $18,000, and $3,000 and $5,000 respectively. Inducement Stock Options Pursuant to the rules of The Nasdaq Stock Market, the Company has the ability to issue equity awards, including stock options, as an inducement to an individual to accept employment with the Company. These awards need not be granted from a plan approved by the Company’s shareholders. In January, 2019 the Company granted options for the purchase of 600,000 shares of common stock to its President and Chief Executive Officer as an inducement to accept the Company’s offer of employment (See Note 7.) The stock options have exercise prices at the award date with fair values ranging from $1.16 to $2.25 per share, contractual lives of 10 years, and that vest over 2 years. Of these options to purchase 600,000 shares of common stock, an option to purchase 258,618 shares of common stock was issued from the Plan and is accounted for with the stock options described above. Non-qualified stock options covering the remaining 341,382 shares of common stock were issued from the Company’s reserve of authorized but unissued shares of common stock. The fair value of the non-qualified stock options estimated on the date of grant using the Black-Scholes option valuation model was $176,000. The recognized compensation expense associated with these awards for each of the three and six months ended June 30, 2021 and 2020 was $0 and $13,000 and $13,000 and $26,000, respectively. There is no remaining unrecognized compensation expense associated with these awards. Warrants During the six months ended June 30, 2021, 37,500 warrants were redeemed at an exercise price of $1.80 per share and 42,500 expired. As of June 30, 2021 the Company had no warrants outstanding for the purchase of shares of common stock.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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