Note 9 - Stockholders' Equity (Details Textual)
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|
|
1 Months Ended |
3 Months Ended |
9 Months Ended |
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|
|
|
|
|
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|
|
May 08, 2026
$ / shares
shares
|
May 14, 2025
$ / shares
shares
|
Sep. 30, 2026
USD ($)
$ / shares
shares
|
Aug. 31, 2026
USD ($)
$ / shares
shares
|
Jul. 31, 2026
USD ($)
$ / shares
shares
|
May 31, 2026
USD ($)
shares
|
Jan. 31, 2026
USD ($)
shares
|
Sep. 30, 2025
USD ($)
$ / shares
shares
|
Mar. 31, 2025
USD ($)
shares
|
Mar. 31, 2025
$ / shares
|
Feb. 28, 2025
USD ($)
shares
|
Feb. 28, 2025
$ / shares
|
Sep. 30, 2026
USD ($)
$ / shares
shares
|
Sep. 30, 2025
USD ($)
$ / shares
shares
|
Sep. 30, 2026
USD ($)
$ / shares
shares
|
Sep. 30, 2025
USD ($)
$ / shares
shares
|
Jun. 30, 2026
USD ($)
|
May 31, 2026
$ / shares
|
May 07, 2026
shares
|
Dec. 31, 2025
USD ($)
$ / shares
shares
|
Jun. 30, 2025
USD ($)
|
Dec. 31, 2024
USD ($)
$ / shares
shares
|
Mar. 28, 2023
$ / shares
|
Dec. 23, 2022
$ / shares
|
Feb. 14, 2019
shares
|
| Capital Stock, Shares Authorized (in shares) |
|
|
560,000,000
|
|
|
|
|
|
|
|
|
|
560,000,000
|
|
560,000,000
|
|
|
|
|
560,000,000
|
|
|
|
|
|
| Common Stock, Shares Authorized (in shares) |
|
|
535,000,000
|
|
|
|
|
|
|
|
|
|
535,000,000
|
|
535,000,000
|
|
|
|
|
535,000,000
|
|
|
|
|
|
| Preferred Stock, Shares Authorized (in shares) |
|
|
25,000,000
|
|
|
|
|
|
|
|
|
|
25,000,000
|
|
25,000,000
|
|
|
|
|
25,000,000
|
|
|
|
|
|
| Proceeds from Stock Options Exercised | $ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 2,120,830
|
$ 373,182
|
|
|
|
|
|
|
|
|
|
| Proceeds from Warrant Exercises | $ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
46,214
|
0
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ |
|
|
$ 10,942,188
|
|
|
|
|
|
|
|
|
|
$ 10,942,188
|
|
10,942,188
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Expense | $ |
|
|
|
|
|
|
|
|
|
|
|
|
$ 1,166,063
|
$ 165,352
|
$ 2,211,288
|
$ 413,453
|
|
|
|
|
|
|
|
|
|
| The 2019 Plan [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
30,000
|
356,150
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in AUD per share) | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.25
|
$ 0.51
|
|
|
|
|
|
|
|
|
|
| Common Stock, Capital Shares Reserved for Future Issuance (in shares) |
|
|
2,675,887
|
|
|
|
|
|
|
|
|
|
2,675,887
|
|
2,675,887
|
|
|
|
45,150,000
|
|
|
|
|
|
11,418,500
|
| Common Stock, Capital Shares Reserved for Future Issuance, Percent Increase |
|
|
|
|
|
|
|
|
|
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|
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5.00%
|
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|
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| Common Stock, Capital Shares Reserved for Future Issuance, Maximum Yearly Amount (in shares) |
|
|
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
3,000,000
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) |
|
|
45,150,000
|
|
|
|
|
|
|
|
|
|
45,150,000
|
|
45,150,000
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4 years
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) |
|
|
36,171,577
|
|
|
|
|
33,790,121
|
|
|
|
|
36,171,577
|
33,790,121
|
36,171,577
|
33,790,121
|
|
|
|
33,907,621
|
|
25,555,170
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term (Year) |
|
|
|
|
|
|
|
|
|
|
|
|
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|
6 years 9 months 21 days
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term (Year) |
|
|
|
|
|
|
|
|
|
|
|
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|
5 years 10 days
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value | $ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 30,375
|
$ 138,476
|
|
|
|
|
|
|
|
|
|
| The 2019 Plan [Member] | Management [Member] |
|
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|
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|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) |
|
|
26,393,261
|
|
|
|
|
|
|
|
|
|
26,393,261
|
|
26,393,261
|
|
|
|
|
|
|
|
|
|
|
| Warrants to Purchase Class A Common Stock [Member] |
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|
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|
|
|
|
|
|
|
|
|
|
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| Stock Issued During Period, Shares, Warrants Exercised (in shares) |
|
|
78,125
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
|
|
$ 0.6
|
|
|
|
|
|
|
|
|
|
$ 0.6
|
|
$ 0.6
|
|
|
|
|
|
|
|
|
|
|
| Proceeds from Warrant Exercises | $ |
|
|
$ 46,214
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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| Equity Raise Warrants [Member] |
|
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|
|
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
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|
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| Class of Warrant or Right, Issued During Period (in shares) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3,265,318
|
|
|
|
|
|
|
|
|
|
|
| Class of Warrant or Right, Outstanding (in shares) |
|
|
3,187,193
|
|
|
|
|
|
|
|
|
|
3,187,193
|
|
3,187,193
|
|
|
|
|
|
|
|
|
|
|
| Warrants and Rights Outstanding, Term (Year) |
|
|
10 years
|
|
|
|
|
|
|
|
|
|
10 years
|
|
10 years
|
|
|
|
|
|
|
|
|
|
|
| Equity Raise Warrants, Liability Classified [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Warrant or Right, Issued During Period (in shares) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2,100,568
|
|
|
|
|
|
|
|
|
|
|
| Class of Warrant or Right, Outstanding (in shares) |
|
|
2,100,568
|
|
|
|
|
|
|
|
|
|
2,100,568
|
|
2,100,568
|
|
|
|
|
|
|
|
|
|
|
| Equity Raise Warrants, Non-liability Classified [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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| Class of Warrant or Right, Issued During Period (in shares) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,164,750
|
|
|
|
|
|
|
|
|
|
|
| Class of Warrant or Right, Outstanding (in shares) |
|
|
1,086,625
|
|
|
|
|
|
|
|
|
|
1,086,625
|
|
1,086,625
|
|
|
|
|
|
|
|
|
|
|
| SPA Warrants [Member] |
|
|
|
|
|
|
|
|
|
|
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|
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|
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|
|
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|
|
|
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|
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| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.2563
|
$ 0.2563
|
|
| Class of Warrant or Right, Outstanding (in shares) |
|
|
1,950,840
|
|
|
|
|
|
|
|
|
|
1,950,840
|
|
1,950,840
|
|
|
|
|
|
|
|
|
|
|
| Warrants and Rights Outstanding, Term (Year) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5 years
|
5 years
|
|
| General Warrants [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
|
|
$ 0.4723
|
|
|
|
|
$ 0.4742
|
|
|
|
|
$ 0.4723
|
$ 0.4742
|
$ 0.4723
|
$ 0.4742
|
|
|
|
$ 0.4742
|
|
$ 0.4742
|
|
|
|
| Class of Warrant or Right, Issued During Period (in shares) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0
|
0
|
|
|
|
|
|
|
|
|
|
| Class of Warrant or Right, Outstanding (in shares) |
|
|
5,138,033
|
|
|
|
|
5,216,158
|
|
|
|
|
5,138,033
|
5,216,158
|
5,138,033
|
5,216,158
|
|
|
|
5,216,158
|
|
5,216,158
|
|
|
|
| Warrants and Rights Outstanding | $ |
|
|
$ 1,922,509
|
|
|
|
|
$ 1,651,695
|
|
|
|
|
$ 1,922,509
|
$ 1,651,695
|
$ 1,922,509
|
$ 1,651,695
|
$ 2,256,802
|
|
|
$ 1,828,677
|
$ 1,793,999
|
$ 1,532,067
|
|
|
|
| March 2025 Offering [Member] | CDI [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Stock Issued During Period, Shares, New Issues (in shares) |
|
|
|
|
|
|
|
|
49,645,391
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Shares Issued, Price Per Share (in AUD per share) | $ / shares |
|
|
|
|
|
|
|
|
|
$ 1.41
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Proceeds from Issuance or Sale of Equity | $ |
|
|
|
|
|
|
|
|
$ 42,827,577
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| May 2026 Offering [Member] | CDI [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Stock Issued During Period, Shares, New Issues (in shares) |
|
|
|
|
|
32,432,433
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Shares Issued, Price Per Share (in AUD per share) | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 1.85
|
|
|
|
|
|
|
|
| Proceeds from Issuance or Sale of Equity | $ |
|
|
|
|
|
$ 41,585,804
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| CDI Options [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |
|
|
|
|
5,051,539
|
|
|
|
340,000
|
|
163,935
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in AUD per share) | (per share) |
|
|
|
|
$ 0.61
|
|
|
|
|
$ 0.61
|
|
$ 0.61
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Proceeds from Stock Options Exercised | $ |
|
|
|
|
$ 2,113,660
|
|
|
|
$ 130,842
|
|
$ 61,419
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Option [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |
|
|
|
30,000
|
|
|
|
356,150
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Proceeds from Stock Options Exercised | $ |
|
|
|
$ 7,170
|
|
|
|
$ 180,922
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Option [Member] | The 2019 Plan [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10 years
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Option [Member] | Minimum [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in AUD per share) | $ / shares |
|
|
|
$ 0.21
|
|
|
|
$ 0.31
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Option [Member] | Maximum [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in AUD per share) | $ / shares |
|
|
|
$ 0.31
|
|
|
|
$ 0.52
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Performance Based Stock Options [Member] | The 2019 Plan [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares) |
|
|
1,194,110
|
|
|
|
2,088,721
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Accelerated Cost | $ |
|
|
$ 1,015,213
|
|
|
|
$ 772,649
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Expense, Tax Benefit | $ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ |
|
|
10,942,188
|
|
|
|
|
|
|
|
|
|
10,942,188
|
|
10,942,188
|
|
|
|
|
|
|
|
|
|
|
| Restricted Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Expense, Tax Benefit | $ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0
|
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |
111,497
|
121,260
|
|
|
|
|
|
|
|
|
|
|
|
|
111,497
|
121,260
|
|
|
|
|
|
|
|
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |
$ 1.29
|
$ 1.07
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 1.29
|
$ 1.07
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Expense | $ |
|
|
|
|
|
|
|
|
|
|
|
|
29,487
|
$ 25,717
|
$ 82,466
|
$ 64,411
|
|
|
|
|
|
|
|
|
|
| Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $ |
|
|
$ 267,906
|
|
|
|
|
|
|
|
|
|
$ 267,906
|
|
$ 267,906
|
|
|
|
|
|
|
|
|
|
|