Note 4 - Stock-based Compensation Plans	6 Months Ended
Jun. 30, 2025
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	NOTE 4 – STOCK-BASED COMPENSATION PLANS The Company has issued options and has granted stock awards pursuant to its 2019 Equity Incentive Plan, as described below. 2019 Equity Incentive Plan The 2019 Equity Incentive Plan (as amended, “2019 EIP”) was originally approved by stockholders at the July 10, 2019 Annual Meeting, with amendments to the plan approved by stockholders at the July 12, 2022 Annual Meeting, the June 11, 2024 Annual Meeting and the June 12, 2025 Annual Meeting. The plan, as amended, provides for the grant and issuance of up to 7,200,000 shares and options to the Company’s employees, directors and consultants. Effective July 1, 2021, under the 2019 EIP, each outside director receives $75,000 of cash compensation and receives a deferred stock award consisting of shares of the Company’s common stock with a value equal to $25,000 on June 30 of each year. The award accrues on a quarterly basis, with $18,750 of cash compensation and $6,250 of stock earned for each fiscal quarter in which a director serves. The deferred stock award vests automatically on the January 31 that first follows the award date. *Stock Awards to Directors, Officers, and Consultants* The Company has granted stock awards pursuant to its 2019 EIP. Of the total 7,200,000 shares reserved under the 2019 Equity Incentive Plan, as amended, 5,164,886 shares and restricted stock units (“RSUs”) have been awarded to the Company directors, employees and consultants as of June 30, 2025. Of the 5,164,886 shares and RSUs awarded, 73,908 shares were awarded to the Company’s directors for services performed during the plan year ended June 30, 2025. These shares will vest and be issued on January 31, 2026. In January 2024, 60,000 RSUs were granted to employees which vested on January 2, 2025. In April 2024, the Company granted 1.6 million RSUs and performance stock units (“PSUs”) in conjunction with entering into an amended and restated employment agreement with the Company’s Chief Executive Officer with (a) 700,000 RSUs that vest over a three-year period from 2024 to 2026; (b) 600,000 RSUs that will vest upon achievement of milestones related to completion of certain permits, entering into binding contract for water delivery or storage, and delivery of water, and (c) 300,000 PSUs that will vest upon a Price Hurdle of $15 per share for 20 consecutive days. In 2025, the Company’s Chief Executive Officer and the Company mutually agreed to cancel 300,000 PSUs and 10,000 RSUs so that the underlying shares can be utilized for grants to other key employees and consultants. In September 2024, the Company granted 275,000 RSUs in conjunction with entering into an employment agreement with the Company’s Chief Operating Officer. 137,500 of these RSUs vest over a three-year period from September 2024 to September 2027 and the remaining 137,500 RSUs will vest upon achievement of milestones related to completion of certain permits, entering into binding contracts for water delivery or storage, and delivery of water. 150,000 RSUs were granted to consultants in January 2025 ( “January 2025 RSU Grant”). Of the 150,000 RSUs granted under the January 2025 RSU Grant, 16,250 RSUs vested and were issued immediately and 50,000 RSUs vested and were issued in February 2025 upon achievement of certain milestones. Of the remaining 83,750 RSUs granted under the January 2025 RSU grant, 33,750 RSUs vest in equal quarterly installments through December 2025 and 50,000 shares vest upon achievement of certain milestones. In February 2025, 420,000 RSUs for bonus awards were granted to employees which vested and became issuable immediately. Of these 420,000 RSUs, the Company issued 382,477 shares net of taxes withheld and paid in cash by the Company. Additionally, in March 2025, 145,000 RSUs were granted to consultants ( “March 2025 RSU Grant”). Of the 145,000 RSUs granted under the March 2025 RSU Grant, 85,000 shares were subject to vesting upon achievement of certain milestones and 60,000 shares vest over a period of one year. In June 2025, 55,000 of the shares underlying these RSUs were issued upon achievement of certain milestones. The accompanying consolidated statements of operations and comprehensive loss include approximately $3,319,000 and $2,380,000 of stock-based compensation expense related to stock awards in the six months ended June 30, 2025 and 2024, respectively.

Note 4 - Stock-based Compensation Plans

6 Months Ended

Jun. 30, 2025

Share-Based Payment Arrangement [Text Block]

NOTE 4 – STOCK-BASED COMPENSATION PLANS

The Company has issued options and has granted stock awards pursuant to its 2019 Equity Incentive Plan, as described below.

2019 Equity Incentive Plan

The 2019 Equity Incentive Plan (as amended, “2019 EIP”) was originally approved by stockholders at the July 10, 2019 Annual Meeting, with amendments to the plan approved by stockholders at the July 12, 2022 Annual Meeting, the June 11, 2024 Annual Meeting and the June 12, 2025 Annual Meeting. The plan, as amended, provides for the grant and issuance of up to 7,200,000 shares and options to the Company’s employees, directors and consultants.

Effective July 1, 2021, under the 2019 EIP, each outside director receives $75,000 of cash compensation and receives a deferred stock award consisting of shares of the Company’s common stock with a value equal to $25,000 on June 30 of each year. The award accrues on a quarterly basis, with $18,750 of cash compensation and $6,250 of stock earned for each fiscal quarter in which a director serves. The deferred stock award vests automatically on the January 31 that first follows the award date.

Stock Awards to Directors, Officers, and Consultants

The Company has granted stock awards pursuant to its 2019 EIP.

Of the total 7,200,000 shares reserved under the 2019 Equity Incentive Plan, as amended, 5,164,886 shares and restricted stock units (“RSUs”) have been awarded to the Company directors, employees and consultants as of June 30, 2025. Of the 5,164,886 shares and RSUs awarded, 73,908 shares were awarded to the Company’s directors for services performed during the plan year ended June 30, 2025. These shares will vest and be issued on January 31, 2026.

In January 2024, 60,000 RSUs were granted to employees which vested on January 2, 2025.

In April 2024, the Company granted 1.6 million RSUs and performance stock units (“PSUs”) in conjunction with entering into an amended and restated employment agreement with the Company’s Chief Executive Officer with (a) 700,000 RSUs that vest over a three-year period from 2024 to 2026; (b) 600,000 RSUs that will vest upon achievement of milestones related to completion of certain permits, entering into binding contract for water delivery or storage, and delivery of water, and (c) 300,000 PSUs that will vest upon a Price Hurdle of $15 per share for 20 consecutive days. In 2025, the Company’s Chief Executive Officer and the Company mutually agreed to cancel 300,000 PSUs and 10,000 RSUs so that the underlying shares can be utilized for grants to other key employees and consultants. In September 2024, the Company granted 275,000 RSUs in conjunction with entering into an employment agreement with the Company’s Chief Operating Officer. 137,500 of these RSUs vest over a three-year period from September 2024 to September 2027 and the remaining 137,500 RSUs will vest upon achievement of milestones related to completion of certain permits, entering into binding contracts for water delivery or storage, and delivery of water.

150,000 RSUs were granted to consultants in January 2025 ( “January 2025 RSU Grant”). Of the 150,000 RSUs granted under the January 2025 RSU Grant, 16,250 RSUs vested and were issued immediately and 50,000 RSUs vested and were issued in February 2025 upon achievement of certain milestones. Of the remaining 83,750 RSUs granted under the January 2025 RSU grant, 33,750 RSUs vest in equal quarterly installments through December 2025 and 50,000 shares vest upon achievement of certain milestones.

In February 2025, 420,000 RSUs for bonus awards were granted to employees which vested and became issuable immediately. Of these 420,000 RSUs, the Company issued 382,477 shares net of taxes withheld and paid in cash by the Company.

Additionally, in March 2025, 145,000 RSUs were granted to consultants ( “March 2025 RSU Grant”). Of the 145,000 RSUs granted under the March 2025 RSU Grant, 85,000 shares were subject to vesting upon achievement of certain milestones and 60,000 shares vest over a period of one year. In June 2025, 55,000 of the shares underlying these RSUs were issued upon achievement of certain milestones.

The accompanying consolidated statements of operations and comprehensive loss include approximately $3,319,000 and $2,380,000 of stock-based compensation expense related to stock awards in the six months ended June 30, 2025 and 2024, respectively.