Company: CNCKW
Filing Date: 2025-11-18
Form Type: 424B3
Source: 0001913847-25-000033
Chunk: 17

Company: Coincheck Group N.V.
Filing Date: 2025-11-18
Form: 424B3
Chunk 17
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 |   |       |
| Type of related party          |     |     Name of related party |       |     | Detail of transaction              |       |     | For the six months ended September 30, |       |     |   |       |
| 2024                           |     |                      2025 |       |     |                                    |       |     |                                        |       |     |   |       |
| Parent company                 |     |         Monex Group, Inc. |       |     | Business management service fee(2) |       |     | ¥                                      |   257 |     | ¥ |     — |
| Subsidiaries of parent company |     | Monex Finance Corporation |       |     | Interest expense                   |       |     |                                        |     4 |     |   |    57 |
| Associates of parent company   |     |               Monex, Inc. |       |     | Transaction revenue(1)             |       |     |                                        | 3,034 |     |   | 3,895 |
| Cost of sales(1)               |     |                           | 3,025 |     |                                    | 3,883 |     |                                        |       |     |   |       |
| Partnership program revenue    |     |                           |    24 |     |                                    |    17 |     |                                        |       |     |   |       |
| Derivative gains/(losses)(5)   |     |                           |     9 |     |                                    |     — |     |                                        |       |     |   |       |

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(1) Certain of Coincheck’s managing directors and related parties purchase or sell crypto assets on Coincheck’s marketplace platform. The transactions for the three and six months ended September 30, 2024 and 2025, were made on terms equivalent to those that prevail in arm’s-length transactions. The Company recognized the corresponding transaction revenue amounting to ¥1,414 million and ¥2,180 million for the three months ended September 30, 2024 and 2025, and ¥3,034 million and ¥3,895 million for the six months ended September 30, 2024 and 2025, respectively.

18

#### COINCHECK GROUP N.V. and its subsidiaries.
(2) Business management service fee represents the considerations for guidance and support on general management and other consulting services provided by Monex, the parent company of Coincheck (prior to the