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Stockholders' Equity | 12 Months Ended
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May 31, 2024
Equity [Abstract] |
Stockholders' Equity | Stockholders' Equity Equity Plans On October 9, 2021, the Company’s board of directors approved two equity incentive plans, which the Company’s stockholders approved on January 20, 2022. The two plans consist of the 2022 Incentive Plan, previously referred to in the Company’s SEC filings as the 2021 Incentive Plan, which provides for grants of various equity awards to the Company’s employees and consultants, and the 2022 Non-Employee Director Stock Plan previously referred to in the Company’s SEC filings as the 2021 Non-Employee Director Stock Plan (together with the Incentive Plan, the “Plans”), which provides for grants of restricted stock to non-employee directors and for deferral of cash and stock compensation if such deferral provisions are activated at a future date. As of May 31, 2024, the Company had issued awards for approximately 16.1 million shares of common stock of the Company under the plans. During the fiscal years ended May 31, 2024 and 2023, the Company recognized $17.3 million and $32.1 million in stock-based compensation, respectively. Restricted Stock Awards The following is a summary of the activity and balances for unvested restricted stock awards granted for the fiscal year ended May 31, 2024:
| Number of Shares |  | Weighted Average Grant Date Fair Value Per Share
Outstanding as of May 31, 2023 | 380,955 |  |  | $ | 2.22 |
Granted | 716,726 |  |  | 4.09 |
Vested | (391,416) |  |  | 2.30 |
Forfeited | (67,370) |  |  | 4.75 |
Outstanding as of May 31, 2024 | 638,895 |  |  | $ | 4.01 |
As of May 31, 2024, total remaining expense to be recognized related to these awards was $2.1 million and the weighted average remaining recognition period for the unvested awards was 2.1 years. Restricted Stock Units The following is a summary of the activity and balances for unvested restricted stock units granted for the fiscal year ended May 31, 2024:
| Number of Shares |  | Weighted Average Grant Date Fair Value Per Share
Outstanding as of May 31, 2023 | 12,465,935 |  |  | $ | 2.53 |
Granted | 2,890,900 |  |  | 6.02 |
Vested | (6,361,996) |  |  | 2.67 |
Forfeited | (639,759) |  |  | 3.77 |
Outstanding as of May 31, 2024 | 8,355,080 |  |  | $ | 3.59 |
As of May 31, 2024, total remaining expense to be recognized related to these awards was $26.4 million and the weighted average remaining recognition period for the unvested awards was 1.8 years. Public Offerings Craig-Hallum Capital Group LLC During the fiscal year ended May 31, 2024, the Company completed sales of common stock under an "at the market" sale agreement with Craig-Hallum Capital Group LLC pursuant to which the Company could sell up to $125 million in aggregate proceeds of common stock. The Company sold approximately 18.9 million shares for net proceeds of approximately $121.2 million in total. Commission and legal fees related to the issuance totaled $4.0 million for the fiscal year ended May 31, 2024. Roth Capital Partners LLC During the month ended May 31, 2024, the Company began sales of common stock under a new "at the market" sale agreement with Roth Capital Partners, LLC pursuant to which the Company could sell up to $25 million in aggregate proceeds of common stock. As of May 31, 2024, the Company has sold approximately 2.7 million shares for net proceeds of approximately $9.6 million in total. Commission and legal fees related to the issuance were $0.3 million for the fiscal year ended May 31, 2024. Extinguishment of Noncontrolling Interest On August 31, 2023, pursuant to the joint venture agreement, the minority partner in 1.21 Gigawatts LLC exercised the option to exchange their interest in the joint venture for approximately 1.5 million shares, or a value of $9.8 million, of the Company’s common stock. The Company is the sole member of 1.21 Gigawatts LLC and has since August 31, 2023, reported all activity as attributable to the Company. AI Bridge Warrants On April 26, 2024, the Company entered into Amendment No. 2 (the “AI Amendment”) to the AI Bridge Loan pursuant to the which the Company issued warrants to purchase up to 3,000,000 shares of Common Stock subject to certain adjustments to AI Bridge Funding LLC Loan (the “AI Warrants”). The AI Warrants are exercisable upon payment of the applicable exercise price in cash or through cashless exercise for a period of five years. 1,500,000 AI Warrants have an exercise price of $10.00 per share of Common Stock and 1,500,000 AI Warrants have an exercise price of $7.50 per share of Common Stock. The AI Warrants were measured at fair value using a Black-Scholes Option Pricing model. Inherent in pricing models are assumptions related to expected share-price volatility, expected life, risk-free interest rate and dividend yield, which are considered Level 3 inputs. The estimated fair value of the AI Warrants was based on the following significant inputs:
Expected term | 5 years
Stock price | $ | 2.94 |
Volatility | 105 | %
Risk-free rate | 4.63 | %
Dividend yield | — | %
The fair value of the AI Warrants is disclosed in loss on fair value of warrants issued to related parties on the consolidated statements of operations. The fair value of the $7.50 strike price and the $10.00 strike price AI Warrants was $1.96 and $1.84 per warrant, respectively. As of May 31, 2024, the fair value of the AI Warrants was $5.7 million and was recorded in the statement of stockholders' equity. The Company recorded a loss on the fair value on the date of issuance of the AI Warrants of $5.7 million in the consolidated statements of operations for the fiscal year ended May 31, 2024. Series E Preferred Stock On May 16, 2024, the Company entered into a Dealer Manager Agreement (the “Dealer Manager Agreement”) with Preferred Capital Securities, LLC (the “Dealer Manager”), pursuant to which the Dealer Manager has agreed to serve as the Company’s agent and dealer manager for the Company’s offering (the “Offering”) of up to 2,000,000 shares of its Series E Redeemable Preferred Stock, par value $0.001 (the “Series E Preferred Stock”). The Series E Preferred Stock is registered with the Securities and Exchange Commission pursuant to a shelf registration statement on Form S-3 (File No. 333-279155) under the Securities Act of 1933, as amended (the “Registration Statement”), and will be offered and sold pursuant to a prospectus supplement dated May 16, 2024, and a base prospectus dated May 16, 2024, relating to the Registration Statement. Each share of Series E Preferred Stock will be sold a public offering price of $25.00 per share (the “Stated Value”). Subject to the terms, conditions and limitations described in the Dealer Manager Agreement, the Company will pay to the Dealer Manager a dealer manager fee in an amount equal to 2% of the Stated Value per share of Series E Preferred Stock sold in the Offering and a selling commission of up to 6% of the Stated Value per share of Series E Preferred Stock sold in the Offering. As of May 31, 2024, there were no shares sold of the Series E Preferred Stock. As of the date of this report, the Company sold approximately 301,673 shares of Series E Preferred Stock for net proceeds of approximately $6.9 million in total.

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- Definition The entire disclosure for shareholders' equity and share-based payment arrangement. Includes, but is not limited to, disclosure of policy and terms of share-based payment arrangement, deferred compensation arrangement, and employee stock purchase plan (ESPP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//505/tableOfContent Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//718/tableOfContent + Details
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