Company: GDSTR
Filing Date: 2025-07-18
Form Type: S-4/A
Source: 0001213900-25-065671
Chunk: 369

Company: Goldenstone Acquisition Ltd.
Filing Date: 2025-07-18
Form: S-4/A
Chunk 369
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2024    |     | 7,536,687 |   |     | $        | 0.29 |     |       7.2 |     | $         | — |
| Exercisable at March 31, 2024    |     | 4,712,168 |   |     | $        | 0.29 |     |       6.3 |     | $         | — |

Total non -cashstock compensation expense charged against income from continuing operations for the three months ended March 31, 2025 and 2024 was $211,495 and $265,771, respectively. The table below summarizes the fair value of an option granted in the three months ended March 31, 2025 and 2024 and the assumptions included in the Black -Scholesmodel used to estimate the fair value:

|                                 |     |   |      For the 
 Three months 
        ended 
    March 31, 
         2025 |   |     |   |      For the 
 Three months 
        ended 
    March 31, 
         2024 |   |
|:--------------------------------|:----|:--|-------------:|:--|:----|:--|-------------:|:--|
| Fair value                      |     | $ |         0.98 |   |     | $ |         0.65 |   |
| Exercise price                  |     | $ |         0.29 |   |     | $ |         0.29 |   |
| Risk-free interest rate         |     |   |         4.58 | % |     |   |         4.01 | % |
| Average life of options (years) |     |   |           10 |   |     |   |           10 |   |
| Volatility                      |     |   |        70.00 | % |     |   |        75.00 | % |
| Dividend yield                  |     |   |            0 | % |     |   |            0 | % |

F-44 INFINTIUM FUEL CELL SYSTEMS, INC.
NOTES TO FINANCIAL STATEMENTS
(Unaudited) NOTE 13 — EQUITY INCENTIVE PLAN (cont.) The fair value of the options refers to the fair value of the ordinary shares as of the equity valuation dates, and the exercise price is determined according to each share option agreement