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Stockholders' Equity | 12 Months Ended
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Dec. 31, 2022
Equity [Abstract] |
Stockholders' Equity | STOCKHOLDERS’ EQUITY June 2022 Private Placement In June 2022, we completed the June 2022 Private Placement with certain institutional investors for the sale of 1,313,462 shares of our common stock at a purchase price of $1.30 per share. We also sold to the same institutional investors (i) June 2022 Pre-Funded Warrants to purchase 1,378,848 shares of common stock at an exercise price of $0.0001 per share and (ii) warrants to purchase up to an aggregate of 2,692,310 shares of common stock at an exercise price of $1.30 per share. In connection with the June 2022 Private Placement, we paid the placement agent commissions of $252 thousand, plus $35 thousand in expenses, and we also paid legal, accounting and other fees of $47 thousand. Total offering costs of $334 thousand have been presented as a reduction of additional paid-in capital and have been netted within equity in the Condensed Consolidated Balance Sheet as of December 31, 2022. Net proceeds to us from the June 2022 Private Placement were approximately $3.2 million. We determined the exercise price of the June 2022 Pre-Funded Warrants to be nominal and, as such, have considered the 1,378,848 shares underlying them to be outstanding effective June 7, 2022, for purposes of calculating net loss per share. In July 2022, all of the June 2022 Pre-Funded Warrants were exercised. As of December 31, 2022, June 2022 Warrants to purchase an aggregate of 2,692,310 shares of common stock remained outstanding, with an exercise price of $1.30 per share. The exercise of the remaining June 2022 Warrants outstanding could provide us with cash proceeds of up to $3.5 million in the aggregate. December 2021 Private Placement In December 2021, we completed the December 2021 Private Placement with certain institutional investors for the sale of 1,193,185 shares of our common stock at a purchase price of $3.52 per share. We also sold to the same institutional investors (i) December 2021 Pre-Funded Warrants to purchase 85,228 shares of common stock at an exercise price of $0.0001 per share and (ii) warrants (collectively with the December 2021 Pre-Funded Warrants, the “December 2021 Warrants”) to purchase up to an aggregate of 1,278,413 shares of common stock at an exercise price of $3.52 per share. We paid the placement agent commission of $360 thousand plus $42 thousand in expenses in connection with the December 2021 Private Placement and we also paid legal, accounting and other fees of $97 thousand related to the December 2021 Private Placement. Total offering costs of $499 thousand have been presented as a reduction of additional paid-in capital and have been netted within equity in the Consolidated Balance Sheet as of December 31, 2021. Net proceeds from the December 2021 Private Placement were approximately $4.0 million. We determined the exercise price of the December 2021 Pre-Funded Warrants to be nominal and, as such, have considered the 85,228 shares underlying them to be outstanding effective December 16, 2021, for the purposes of calculating basic EPS. In January 2022, all of the December 2021 Pre-Funded Warrants were exercised. As of December 31, 2022, December 2021 Warrants to purchase an aggregate of 1,278,413 shares of common stock remained outstanding, with an exercise price of $3.52 per share. The exercise of the remaining December 2021 Warrants outstanding could provide us with cash proceeds of up to $4.5 million in the aggregate. June 2021 Equity Offering In June 2021, we completed a registered direct offering of 990,100 shares of our common stock to certain institutional investors, at a purchase price of $5.05 per share. We paid the placement agent commissions of $400 thousand, plus $51 thousand in expenses, in connection with the June 2021 Equity Offering and we also paid legal and other fees of $19 thousand related to the offering. Total offering costs of $469 thousand have been presented as a reduction of additional paid-in capital and have been netted within equity in the Condensed Consolidated Balance Sheet as of December 31, 2021. Net proceeds to us from the June 2021 Equity Offering were approximately $4.5 million. January 2020 Equity Offering In January 2020, we completed the January 2020 Equity Offering, pursuant to which we issued the January 2020 Warrants. January 2020 Warrants to purchase an aggregate of 229,414 shares of common stock were outstanding at December 31, 2022 and 2021, with a weighted average exercise price of $3.67 per share. During the year ended December 31, 2022, no January 2020 Warrants issued were exercised and did not result in any proceeds. During the twelve months ended December 31, 2021, 237,892 January 2020 Warrants were exercised, resulting in total proceeds of $801 thousand. The exercise of the remaining January 2020 Warrants outstanding could provide us with cash proceeds of up to $841 thousand in the aggregate. As of December 31, 2022 and 2021, we had the following outstanding January 2020 Warrants to purchase shares of common stock:
| As of December 31, 2022 |  | As of December 31, 2021 |  |  |  |
| Number of Underlying Shares |  | Exercise Price |  | Expiration
Investor Warrants | 187,734 |  | 187,734 |  | $3.3700 |  | January 13, 2025
Placement Agent Warrants | 41,680 |  | 41,680 |  | $4.9940 |  | January 13, 2025
| 229,414 |  | 229,414 |  |  |  |
Preferred Stock On March 29, 2019 we issued $1.7 million aggregate principal amount of subordinated convertible promissory notes (the “Convertible Notes”) to certain investors in a private placement exempt from registration requirements of the Securities Act of 1933, as amended (the “Securities Act”). The Convertible Notes had a maturity date of December 31, 2021 and bore interest at a rate of 5.0% per annum until June 30, 2019 and at a rate of 10.0% thereafter. Pursuant to the terms of the Convertible Notes, on January 16, 2020, following approval by our stockholders of certain amendments to the Certificate of Incorporation, the principal amount of all of the Convertible Notes and the accumulated interest thereon at the date of conversion (totaling $1.8 million) were converted at a conversion price of $0.67 per share into an aggregate of 2,709,018 shares of the Company’s Series A Preferred Stock, which is convertible on a one-for-five basis into shares of our common stock. During the year ended December 31, 2020, 111,548 shares of the Series A Preferred Stock were converted into 22,310 shares of common stock. During the year ended December 31, 2021, 1,721,023 shares of Series A Preferred Stock were converted into 344,205 shares of common stock. The Series A Preferred Stock that was converted in 2021 was held by a Schedule 13D ownership group (under Section 13(d)(3) of the Securities Exchange Act of 1934, as amended, and Rule 13d-5 promulgated thereunder) that includes Fusion Park LLC (“Fusion Park”) and 5 Elements Global Fund L.P. (controlled affiliates of James Tu, the Company's former Executive Chairman and Chief Executive Officer and former member of the Board of Directors), as well as Brilliant Start Enterprise Inc. (“Brilliant Start”) and Jag International Ltd. (controlled affiliates of Gina Huang, a current member of the Company's Board of Directors). Upon conversion of their respective shares of Series A Preferred Stock in 2021, Fusion Park and Brilliant Start received 184,851 and 159,354 shares, respectively, of the Company’s common stock. The Series A Preferred Stock was created by the filing of the Original Series A Certificate of Designation. On January 15, 2020 with prior stockholder approval, the Company amended the Certificate of Incorporation to increase the number of authorized shares of preferred stock to 5,000,000. The Original Series A Certificate of Designation was also amended on January 15, 2020, to increase the number of shares of preferred stock designated as Series A Preferred Stock to 3,300,000 (the Original Series A Certificate of Designation, as so amended, the “Series A Certificate of Designation”). Pursuant to the Series A Certificate of Designation, each holder of outstanding shares of Series A Preferred Stock is entitled to vote with holders of outstanding shares of common stock, voting together as a single class, with respect to any and all matters presented to the stockholders of the Company for their action or consideration, except as provided by law. In any such vote, each share of Series A Preferred Stock shall entitle its holder to a number of votes equal to 11.07% of the number of shares of common stock into which such share of Series A Preferred Stock is convertible. The Series A Preferred Stock (a) has a preference upon liquidation equal to $0.67 per share and then participates on an as-converted basis with the common stock with respect to any additional distributions, (b) shall receive any dividends declared and payable on our common stock on an as-converted basis, and (c) is convertible at the option of the holder into shares of our common stock on a one-for-five basis. On March 29, 2019, the Company also filed a Certificate of Elimination with respect to its authorized, but unissued, Series A Participating Preferred Stock, to return such shares to the status of undesignated preferred stock available for designation as Series A Preferred Stock. The purchase agreement related to the Convertible Notes contained customary representations and warranties and provided for resale registration rights with respect to the shares of our common stock issuable upon conversion of the Series A Preferred Stock. Stock-based compensation On March 18, 2020, our Board of Directors approved the Energy Focus, Inc. 2020 Stock Incentive Plan (the “2020 Plan”). The 2020 Plan was approved by the stockholders at our annual meeting on September 17, 2020, after which no further awards could be issued under the Energy Focus, Inc. 2014 Stock Incentive Plan (the “2014 Plan”). The 2020 Plan initially allows for awards up to 350,000 shares of common stock and expires on September 17, 2030. On June 22, 2022, the stockholders approved an amendment and restatement of the 2020 Plan that increased the shares available for issuance under the 2020 Plan by an additional 300,000 shares. At December 31, 2022, 480,741 shares remain available to grant under the 2020 Plan. Effective September 12, 2022, as a material inducement to our Chief Executive Officer’s acceptance of employment, we granted her an initial stock option award to purchase 150,000 shares of the Company’s common stock (the “Inducement Option Award”), which Inducement Option Award will generally vest over a four-year period, with 25% generally vesting on the first anniversary of the grant date, and the remainder generally vesting in substantially equal monthly installments for 36 months thereafter. The Inducement Option Award, which was intended to be an inducement award under Rule 5635(c)(4) of the Nasdaq Stock Market Listing Rules, was effective on September 12, 2022 and has a per share exercise price equal to the closing price of a share of the Company’s common stock on such date. We have awards outstanding pursuant to the 2014 Plan and one other historical equity-based compensation plan, however no new awards may be granted under these plans. Generally, stock options are granted at fair market value and expire ten years from the grant date. Employee grants generally vest in three or four years, while grants to non-employee directors generally vest in one year. The specific terms of each grant are determined by our Board of Directors. Stock-based compensation expense is attributable to stock options and restricted stock unit awards. For all stock-based awards, we recognize compensation expense using a straight-line amortization method. The following table summarizes stock-based compensation expense and the impact it had on operations for the periods presented (in thousands):
| For the year ended December 31,
| 2022 |  | 2021 |  |
Cost of sales | $ | 2 |  |  | $ | 9 |  |  |
Product development | 15 |  |  | 14 |  |  |
Selling, general, and administrative | 100 |  |  | 406 |  |  |
Total stock-based compensation | $ | 117 |  |  | $ | 429 |  |  |
At December 31, 2022 and 2021, we had unearned stock compensation expense of $0.1 million and $0.3 million, respectively. These costs will be charged to expense and amortized on a straight-line basis in subsequent periods. The remaining weighted average period over which the unearned compensation is expected to be amortized was approximately 2.8 years as of December 31, 2022 and 2.7 years as of December 31, 2021. Stock options The fair value of each stock option is estimated on the date of grant using the Black-Scholes option pricing model. Estimates utilized in the calculation include the expected life of the option, risk-free interest rate, and expected volatility, and are further comparatively detailed as follows:
| 2022 |  | 2021 |  |
Fair value of options issued | $ | 0.77 |  |  | $ | 3.92 |  |  |
Exercise price | $ | 0.95 |  |  | $ | 5.07 |  |  |
Expected life of option (in years) | 6.1 |  | 6.2 |  |
Risk-free interest rate | 3.0 | % |  | 0.9 | % |  |
Expected volatility | 104.0 | % |  | 96.3 | % |  |
Dividend yield | 0.00 | % |  | 0.00 | % |  |
We utilize the simplified method as provided by ASC 718-10 to calculate the expected stock option life. Under ASC 718-10, the expected stock option life is based on the midpoint between the vesting date and the end of the contractual term of the stock option award. The use of this simplified method in place of using the actual historical exercise data is allowed when a stock option award meets all of the following criteria: the exercise price of the stock option equals the stock price on the date of grant; the exercisability of the stock option is only conditional upon completing the service requirement through the vesting date; employees who terminate their service prior to the vesting date forfeit their stock options; employees who terminate their service after vesting are granted a limited time period to exercise their stock options; and the stock options are nontransferable and non-hedgeable. We believe that our stock option awards meet all of these criteria. The estimated expected life of the option is calculated based on contractual life of the option, the vesting life of the option, and historical exercise patterns of vested options. The risk-free interest rate is based on U.S. treasury zero-coupon yield curve on the grant date for a maturity similar to the expected life of the option. The volatility estimates are calculated using historical volatility of our stock price calculated over a period of time representative of the expected life of the option. We have not paid dividends in the past, and do not expect to pay dividends over the corresponding expected term as of the grant date. Options outstanding under all plans at December 31, 2022 have a contractual life of ten years, and vesting periods between one and four years. A summary of option activity under all plans was as follows:
| Number of Options |  | Weighted Average Exercise Price Per Share
Outstanding at December 31, 2020 | 221,450 |  |  | 3.45 |
Granted | 88,240 |  |  | 5.07 |
Cancelled | (36,706) |  |  | 5.35 |
Expired | (1,650) |  |  | 49.18 |
Exercised | (4,225) |  |  | 1.96 |
Outstanding at December 31, 2021 | 267,109 |  |  | $ | 3.46 |
Granted | 226,960 |  |  | 0.95
Cancelled | (160,778) |  |  | 2.99 |
Expired | (2,233) |  |  | 2.78 |
Exercised | (250) |  |  | 1.45 |
Outstanding at December 31, 2022 | 330,808 |  |  | $ | 1.97 |
Vested and expected to vest at December 31, 2022 | 276,267 |  |  | $ | 2.13 |
Exercisable at December 31, 2022 | 117,542 |  |  | $ | 3.13 |
The “Expected to Vest” options are the unvested options that remain after applying the pre-vesting forfeiture rate assumption to total unvested options. 250 options were exercised during 2022 and 4,225 options were exercised during 2021. All outstanding equity awards were out of the money as of December 31, 2022. The options outstanding at December 31, 2022 have been segregated into ranges for additional disclosure as follows:
OPTIONS OUTSTANDING |  | OPTIONS EXERCISABLE
Range of Exercise Prices |  | Number of Shares Outstanding |  | Weighted Average Remaining Contractual Life (in years) |  | Weighted Average Exercise Price |  | Number of Shares Exercisable |  | Weighted Average Remaining Contractual Life (in years) |  | Weighted Average Exercise Price
$0.42 | — | $0.74 |  | 2,640 |  |  | 9.6 |  | $ | 0.72 |  |  | — |  |  | — |  |  | $ | — |
$0.75 | — | $0.78 |  | 150,000 |  |  | 9.7 |  | 0.75 |  |  | — |  |  | — |  |  | — |
$0.79 | — | $1.80 |  | 69,284 |  |  | 7.0 |  | 1.46 |  |  | 32,204 |  |  | 4.8 |  | 1.49 |
$1.81 | — | $2.25 |  | 48,125 |  |  | 5.2 |  | 2.10 |  |  | 48,125 |  |  | 5.2 |  | 2.10 |
$2.26 | — | $27.35 |  | 60,759 |  |  | 6.9 |  | 5.53 |  |  | 37,213 |  |  | 6.1 |  | 5.88 |
|  |  |  | 330,808 |  |  | 8.0 |  | $ | 1.97 |  |  | 117,542 |  |  | 5.4 |  | $ | 3.13 |
Restricted Stock Units In 2015, we began issuing restricted stock units to certain employees and non-employee Directors under the 2014 Plan with vesting periods ranging from one to four years from the grant date. In 2020, we began issuing restricted stock units to certain employees and non-employee Directors under the 2020 Plan with vesting periods ranging from one to four years. The following table shows a summary of restricted stock unit activity:
|  |  | Restricted Stock Units Outstanding |  | Weighted Average Grant Date Fair Value
At December 31, 2020 |  |  | 4,480 |  |  | $ | 8.64 |
Granted |  |  | 50,000 |  |  | 5.26 |
Vested |  |  | (52,080) |  |  | 5.46 |
At December 31, 2021 |  |  | 2,400 |  |  | $ | 7.14 |
Granted |  |  | 50,000 |  |  | 1.26 |
Vested |  |  | (40,800) |  |  | 1.51 |
At December 31, 2022 |  |  | 11,600 |  |  | $ | 1.59 |
Employee stock purchase plans In September 2013, our stockholders approved the 2013 Employee Stock Purchase Plan (the “2013 Plan”) to replace the 1994 prior purchase plan. A total of 100,000 shares of common stock were provided for issuance under the 2013 Plan. The 2013 Plan permits eligible employees to purchase common stock through payroll deductions at a price equal to the lower of 85 percent of the fair market value of our common stock at the beginning or end of the offering period. Employees may end their participation at any time during the offering period, and participation ends automatically upon termination of employment with us. During 2022 and 2021, employees purchased 3,971 and 22,000 shares, respectively. At December 31, 2022, 28,523 shares remained available for purchase under the 2013 Plan.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI https://asc.fasb.org/topic&trid=2208762 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 14 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496171-112644 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 14 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496171-112644 Reference 6: 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 https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496189-112644 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496189-112644 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (h) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 14 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496171-112644 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496189-112644 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 16 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496180-112644 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 15: 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 https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 6 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126731327&loc=SL126733271-114008 + Details
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