Company: FSTWF
Filing Date: 2025-07-25
Form Type: 424B3
Source: 0001213900-25-067790
Chunk: 53

Company: FST Corp.
Filing Date: 2025-07-25
Form: 424B3
Chunk 53
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 shares outstanding of ordinary shares                |     |      |         — |   |     |     | 37,749,381 |   |     |             | —      |   |     |    |   |     |           | 44,766,003 |   |
| Weighted average shares outstanding of redeemable ordinary shares     |     |      | 3,871,740 |   |     |     |          — |   |     |             | —      |   |     |    |   |     |           |          — |   |
| Basic and diluted net loss per ordinary share                         |     | $    |     (0.47 | ) |     | $   |      (0.09 | ) |     | $           | —      |   |     |    |   |     | $         |      (0.23 | ) |
| Weighted average shares outstanding of non-redeemable ordinary shares |     |      | 3,250,000 |   |     |     |          — |   |     |             | —      |   |     |    |   |     |           |          — |   |
| Basic and diluted net loss per Non-redeemable ordinary shares         |     | $    |     (0.47 | ) |     | $   |          — |   |     | $           | —      |   |     |    |   |     | $         |          — |   |

Adjustments to Unaudited Pro Forma Combined Consolidated Statement of Operations The Transaction Accounting Adjustments to the unaudited combined consolidated pro forma statements of operations consist of the following: (1)Reflects the change in fair value of OET derivative liability between December 31, 2024 and January 15, 2025, detail please refer to Note 6 of financial statements of FST Ltd. (formerly Chenghe Acquisition I Co.). (2)Represents an adjustment to eliminate trust interest income. Given the cash in Trust Account has been released after this Transaction, the nonrecurring interest income is reflected at adjustment.

35

Net loss per share The unaudited pro forma combined consolidated basic and diluted earnings per share calculations are based on the sum of the historical SPAC weighted average number of redeemable shares outstanding of 1,779,813, converted SPAC public shares of 700,000 and non -redeemableshares outstanding of 2,550,000 for the year