Convertible Instruments and Accrued Interest (Tables)
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9 Months Ended |
Feb. 28, 2026 |
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| Convertible Instruments and Accrued Interest |
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| Schedule of information on dividends of convertible preferred stock |
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February 28, 2026 |
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May 31, 2025 |
(in thousands except conversion rate) |
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Series B |
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Series C |
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Series D |
|
Series B |
|
Series C |
|
Series D |
Shares of preferred stock outstanding |
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|
19 |
|
|
6 |
|
|
9 |
|
|
19 |
|
|
6 |
|
|
9 |
Common stock conversion rate |
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|
10:1 |
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2,000:1 |
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|
1,250:1 |
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|
10:1 |
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|
2,000:1 |
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|
1,250:1 |
Total shares of common stock if converted |
|
|
190 |
|
|
12,670 |
|
|
10,565 |
|
|
190 |
|
|
12,670 |
|
|
10,565 |
Undeclared dividends |
|
$ |
28 |
|
$ |
— |
|
$ |
— |
|
$ |
24 |
|
$ |
— |
|
$ |
— |
Accrued dividends |
|
$ |
— |
|
$ |
4,243 |
|
$ |
5,132 |
|
$ |
— |
|
$ |
3,769 |
|
$ |
4,500 |
Total shares of common stock if dividends converted |
|
|
56 |
|
|
8,486 |
|
|
10,264 |
|
|
48 |
|
|
7,538 |
|
|
9,000 |
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| Schedule of outstanding balances of convertible notes and accrued interest |
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February 28, 2026 |
|
May 31, 2025 |
(in thousands) |
|
April 2, 2021 Note |
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April 23, 2021 Note |
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Total |
|
April 2, 2021 Note |
|
April 23, 2021 Note |
|
Total |
Convertible notes payable outstanding principal |
|
$ |
2,831 |
|
$ |
24,369 |
|
$ |
27,200 |
|
$ |
2,831 |
|
$ |
24,369 |
|
$ |
27,200 |
Accrued interest on convertible notes |
|
|
5,755 |
|
|
7,580 |
|
|
13,335 |
|
|
5,378 |
|
|
12,773 |
|
|
18,151 |
Outstanding convertible notes payable, net and accrued interest |
|
$ |
8,586 |
|
$ |
31,949 |
|
$ |
40,535 |
|
$ |
8,209 |
|
$ |
37,142 |
|
$ |
45,351 |
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| Schedule of changes to outstanding balance of convertible notes, including accrued interest |
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|
(in thousands) |
|
April 2, 2021 Note |
|
April 23, 2021 Note |
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Total |
Outstanding balance at May 31, 2025 |
|
$ |
8,209 |
|
$ |
37,142 |
|
$ |
45,351 |
Interest expense |
|
|
377 |
|
|
1,557 |
|
|
1,934 |
Fair market value of shares exchanged for repayment |
|
|
— |
|
|
(6,750) |
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|
(6,750) |
Outstanding balance at February 28, 2026 |
|
$ |
8,586 |
|
$ |
31,949 |
|
$ |
40,535 |
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| Summary of key terms of the outstanding convertible notes |
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February 28, 2026 |
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April 2, 2021 Note |
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April 23, 2021 Note |
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Interest rate per annum |
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|
6 |
% |
|
|
6 |
% |
Conversion price per share upon five trading days' notice |
|
$ |
10.00 |
|
|
$ |
10.00 |
|
Party that controls the conversion rights |
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|
Investor |
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|
Investor |
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Maturity date |
|
|
April 5, 2026 |
|
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|
April 23, 2026 |
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Security interest |
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All Company assets excluding intellectual property |
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