Company: GDSTR
Filing Date: 2025-01-30
Form Type: S-4
Source: 0001213900-25-008051
Chunk: 535

Company: Goldenstone Acquisition Ltd.
Filing Date: 2025-01-30
Form: S-4
Chunk 535
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 may be executed in one or more counterparts, all of which shall be considered one and the same agreement, it being understood that each party need not sign the same counterpart. This Agreement shall become effective when each party shall have received a counterpart hereof signed by all of the other parties. Signatures delivered electronically or by facsimile shall be deemed to be original signatures. 17. Termination . This Agreement shall terminate upon the earliest of (a) the Closing of the Merger, (b) the termination of the BCA in accordance with its terms, and (c) the time this Agreement is terminated upon the mutual written agreement of Goldenstone, the Company and the Sponsor. Annex A-77

IN WITNESS WHEREOF, the parties hereto have caused this Sponsor Support Agreement to be executed as of the date first written above.

| GOLDENSTONE:                    |     |                         |
| Goldenstone Acquisition Limited |     |                         |
| By:                             |     | /s/ Eddie Ni            |
|                                 |     | Eddie Ni                |
|                                 |     | Chief Executive Officer |

| SPONSOR:                |     |              |
| Goldenstone Holding LLC |     |              |
| By:                     |     | /s/ Eddie Ni |
|                         |     | Eddie Ni     |
|                         |     | Manager      |

Annex A-78

IN WITNESS WHEREOF, the parties hereto have caused this Sponsor Support Agreement to be executed as of the date first written above.

| THE COMPANY:                      |     |                         |
| Infintium Fuel Cell Systems, Inc. |     |                         |
| By:                               |     | /s/ Yan (Chris) Feng    |
|                                   |     | Yan (Chris) Feng        |
|                                   |     | Chief Executive Officer |

Annex A-79 EXHIBIT B Stockholder Support Agreement This Stockholder Support Agreement, dated as of June 26, 2024 (this “ Agreement ”), by and among Goldenstone Acquisition Limited, a Delaware corporation (“ Goldenstone ”), Infintium Fuel Cell Systems, Inc., a Delaware corporation (the “ Company ”), and certain of the stockholders of the Company, whose names appear on the signature pages of this Agreement (each, a “ Stockholder ” and, collectively, the “ Stockholders ”). RECITALS WHEREAS , Goldenstone, Pacifica Acquisition Corp., a Delaware corporation and wholly owned subsidiary of Goldenstone (“ Merger Sub ”), and the