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Financial instruments - Fair values and risk management (Tables) | 12 Months Ended
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Dec. 31, 2025
Financial Risk Management And Fair Value Of Financial Instruments [Abstract] |
Schedule of carrying amounts and fair values of financial assets and financial liabilities | The following table shows the carrying amounts and fair values of financial assets and financial liabilities, including their levels in the fair value hierarchy. It does not include fair value information for financial assets and financial liabilities not measured at fair value if the carrying amount is a reasonable approximation of fair value.
|  |  | Carrying amount |  | Fair value
| Notes |  | Mandatorily at FVTPL - others |  | Financial assets at amortized cost |  | Other financial liabilities |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Balance at December 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial asset measured at fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial assets at FVTPL | 20 |  | $ | 31,444 |  |  | $ | — |  |  | $ | — |  |  | $ | 31,444 |  |  | $ | — |  |  | $ | 19,862 |  |  | $ | 11,582 |  |  | $ | 31,444 |
Financial assets at amortized cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade receivables | 19 |  | $ | — |  |  | $ | 2,978 |  |  | $ | — |  |  | $ | 2,978 |  |  | n/a |  | n/a |  | n/a |  | n/a
Deposits and other receivables | 17, 19 |  | — |  |  | 8,439 |  |  | — |  |  | 8,439 |  |  | n/a |  | n/a |  | n/a |  | n/a
Amount due from a related company |  |  | — |  |  | 4 |  |  | — |  |  | 4 |  |  | n/a |  | n/a |  | n/a |  | n/a
Cash and cash equivalents | 21 |  | — |  |  | 32,131 |  |  | — |  |  | 32,131 |  |  | n/a |  | n/a |  | n/a |  | n/a
|  |  | $ | — |  |  | $ | 43,552 |  |  | $ | — |  |  | $ | 43,552 |  |  |  |  |  |  |  |  |
Financial liabilities measured at fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant liabilities | 27 |  | $ | 20,319 |  |  | $ | — |  |  | $ | — |  |  | $ | 20,319 |  |  | 667 |  |  | — |  |  | 19,652 |  |  | 20,319 |
Financial liabilities at amortized cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade payables |  |  | $ | — |  |  | $ | — |  |  | $ | 3,142 |  |  | $ | 3,142 |  |  | n/a |  | n/a |  | n/a |  | n/a
Other liabilities | 22 |  | — |  |  | — |  |  | 6,927 |  |  | 6,927 |  |  | n/a |  | n/a |  | n/a |  | n/a
|  |  | $ | — |  |  | $ | — |  |  | $ | 10,069 |  |  | $ | 10,069 |  |  |  |  |  |  |  |  |
|  |  | Carrying amount |  | Fair value
| Notes |  | Mandatorily at FVTPL - others |  | Financial assets at amortized cost |  | Other financial liabilities |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Balance at December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial asset measured at fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial assets at FVTPL | 20 |  | $ | 11,665 |  |  | $ | — |  |  | $ | — |  |  | $ | 11,665 |  |  | $ | — |  |  | $ | — |  |  | $ | 11,665 |  |  | $ | 11,665 |
Financial assets at amortized cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade receivables | 19 |  | $ | — |  |  | $ | 5,242 |  |  | $ | — |  |  | $ | 5,242 |  |  | n/a |  | n/a |  | n/a |  | n/a
Deposits and other receivables | 17, 19 |  | — |  |  | 2,280 |  |  | — |  |  | 2,280 |  |  | n/a |  | n/a |  | n/a |  | n/a
Amount due from a related company |  |  | — |  |  | 3 |  |  | — |  |  | 3 |  |  | n/a |  | n/a |  | n/a |  | n/a
Cash and cash equivalents | 21 |  | — |  |  | 52,251 |  |  | — |  |  | 52,251 |  |  | n/a |  | n/a |  | n/a |  | n/a
|  |  | $ | — |  |  | $ | 59,776 |  |  | $ | — |  |  | $ | 59,776 |  |  |  |  |  |  |  |  |
Financial liabilities measured at fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant liabilities | 27 |  | $ | 175 |  |  | $ | — |  |  | $ | — |  |  | $ | 175 |  |  | 175 |  |  | — |  |  | — |  |  | 175 |
Financial liabilities at amortized cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade payables |  |  | $ | — |  |  | $ | — |  |  | $ | 3,668 |  |  | $ | 3,668 |  |  | n/a |  | n/a |  | n/a |  | n/a
Other liabilities | 22 |  | — |  |  | — |  |  | 1,828 |  |  | 1,828 |  |  | n/a |  | n/a |  | n/a |  | n/a
Liabilities for puttable financial instrument | 28 |  | — |  |  | — |  |  | 14,309 |  |  | 14,309 |  |  | n/a |  | n/a |  | n/a |  | n/a
|  |  | $ | — |  |  | $ | — |  |  | $ | 19,805 |  |  | $ | 19,805 |  |  |  |  |  |  |  |  |
Schedule of fair value measurements | Financial instruments measured at fair value
Type |  | Fair value hierarchy |  | Valuation technique |  | Significant unobservable inputs |  | Inter-relationship between significant unobservable inputs and fair value measurement (Note)
Financial assets at FVTPL |  | Level 2 |  | The fair value is based on the published net asset value per share which is determined using observable market data for the underlying assets |  | n/a |  | n/a
| Level 3 |  | Adjusted net asset value |  | Underlying assets’ value |  | The estimated fair value would increase if the underlying assets’ value is higher.
| Level 3 |  | Asset-based approach with equity allocation using option pricing method (2024: Discounted cash flow method) |  | Volatility: 70.0%, risk-free rate: 2.49%, and time to liquidity event: four years (2024: Risk-adjusted discount rate: 17.5% and discount for lack of marketability: 25.1%) |  | The estimated fair value would increase if: - the underlying assets’ value is higher; - the volatility is higher; - the time to liquidity event is longer; or - the risk-free rate is higher. (2024: The estimated fair value would increase if: - the risk-adjusted discount rate was lower; or - the discount for lack of marketability was lower.)
Note: There are often interrelationships between significant unobservable inputs. For instance, the higher underlying assets’ value tends to increase with higher volatility, a longer time to liquidity event, or a higher risk-free rate. No sensitivity analysis is performed for the Level 3 financial assets as the directors of the Company consider that the exposure is insignificant.
Schedule of information about Level 3 fair value measurements | The following table shows a reconciliation of financial assets at FVTPL and warrant liabilities from the opening balances to the closing balances for Level 3 fair values.
| Financial assets at FVTPL |  | Warrant liabilities
Balance at January 1, 2024 | $ | 20,405 |  |  | $ | — |
Additions | 129 |  |  | — |
Changes in fair value recognized in profit or loss | (8,869) |  |  | — |
Balance at December 31, 2024 and January 1, 2025 | 11,665 |  |  | — |
Additions | — |  |  | 38,858 |
Redemptions | (1,000) |  |  | — |
Warrants exchange | — |  |  | (36,657) |
Changes in fair value recognized in profit or loss | 917 |  |  | 17,451 |
Balance at December 31, 2025 | $ | 11,582 |  |  | $ | 19,652 |
Schedule of credit risk grading framework | The Group’s current credit risk grading framework comprises the following categories:
Category | Description | Basis for recognizing expected credit losses
Performing | The counterparty has a low risk of default and does not have any past-due amounts. | Lifetime ECL – not credit-impaired
Doubtful | Amount is >30 days past due or there has been a significant increase in credit risk since initial recognition. | Lifetime ECL – not credit-impaired
In default | Amount is >90 days past due or there is evidence indicating the asset is credit-impaired. | Lifetime ECL – credit-impaired
Write-off | There is evidence indicating that the debtor is in severe financial difficulty and the Group has no realistic prospect of recovery. | Amount is written off
Schedule of expected credit loss assessment | Gross carrying amount
| 2025
Internal credit rating | Average loss rate |  | Trade receivables
Performing | 0 | % |  | $ | 2,562 |
Doubtful | 1 | % |  | 414 |
In default | 13 | % |  | 18 |
Write-off | 100 | % |  | 550 |
|  |  | $ | 3,544 |
Schedule of movement in the loss allowance account in respect of trade receivable | Movement in the loss allowance account in respect of trade receivable during the years ended December 31, 2025 and 2024 is as follows:
| 2025 |  | 2024
Balance at January 1 | $ | 740 |  |  | $ | 2,424 |
Additions from acquisition (note 33(III)) | — |  |  | 80 |
Net remeasurement of loss allowance | 1,019 |  |  | 366 |
Amounts written off | (498) |  |  | (2,132) |
Eliminated on disposal of a subsidiary (note 34) | (695) |  |  | — |
Exchange differences | — |  |  | 2 |
Balance at December 31 | $ | 566 |  |  | $ | 740 |
Schedule of remaining contractual maturities at the end of the reporting period of the non-derivative financial liabilities and derivative financial liabilities, which are based on contractual undiscounted cash flows | The following are the remaining contractual maturities of financial liabilities at the reporting date. The amounts are gross and undiscounted, and include contractual interest payments.
|  |  |  |  | Contractual undiscounted cash flows
| Weighted average effective interest rate |  | Carrying amount |  | Total |  | Within 1 year or on demand |  | 1 - 2 years |  | More than 2 years
Balance at December 31, 2025 |  |  |  |  |  |  |  |  |  |  |
Trade payables |  |  | $ | 3,142 |  |  | $ | 3,142 |  |  | $ | 3,142 |  |  | $ | — |  |  | $ | — |
Other liabilities |  |  | 6,927 |  |  | 6,927 |  |  | 6,927 |  |  | — |  |  | — |
Lease liabilities | 9 | % |  | 1,767 |  |  | 1,876 |  |  | 1,428 |  |  | 448 |  |  | — |
|  |  | $ | 11,836 |  |  | $ | 11,945 |  |  | $ | 11,497 |  |  | $ | 448 |  |  | $ | — |
Balance at December 31, 2024 |  |  |  |  |  |  |  |  |  |  |
Trade payables |  |  | $ | 3,668 |  |  | $ | 3,668 |  |  | $ | 3,668 |  |  | $ | — |  |  | $ | — |
Other liabilities |  |  | 1,828 |  |  | 1,828 |  |  | 1,828 |  |  | — |  |  | — |
Lease liabilities | 7 | % |  | 5,772 |  |  | 7,204 |  |  | 4,034 |  |  | 1,805 |  |  | 1,365 |
Liabilities for puttable financial instrument | 15 | % |  | 14,309 |  |  | 16,834 |  |  | 16,834 |  |  | — |  |  | — |
|  |  | $ | 25,577 |  |  | $ | 29,534 |  |  | $ | 26,364 |  |  | $ | 1,805 |  |  | $ | 1,365 |

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