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v3.26.1

Shareholders’ Equity/(Deficit) (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 41 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 19, 2026 USD ($) $ / shares shares | Jan. 13, 2025 USD ($) day shares | Aug. 18, 2023 $ / shares shares | Aug. 16, 2023 $ / shares shares | Oct. 08, 2021 USD ($) | Feb. 28, 2026 USD ($) shares | Jan. 31, 2025 $ / shares shares | Mar. 31, 2026 USD ($) shares | Mar. 31, 2025 USD ($) | Feb. 27, 2025 USD ($) shares | Jan. 31, 2025 £ / shares shares | Feb. 29, 2024 | Dec. 31, 2023 | Jun. 30, 2023 USD ($) shares
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary share conversion ratio (in shares) |  |  | 1 |  | 1 |  |  |  |  |  |  |  |  |
Number of shares available for purchase, percent of principal amount of term loan (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 0.025 | 0.025
Number of options exercisable (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 94,222
Fair value of exercisable options | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 700
PIPE Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, shares issued in transaction (in shares) |  |  |  |  |  |  |  | 0 |  |  |  |  |  |
PIPE warrants remain outstanding |  |  |  |  |  |  |  | 12,324,700 |  |  |  |  |  |
2025 ADS Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of pre-funded warrants, net of issuance costs | $ |  | $ 149,800 |  |  |  |  |  |  |  |  |  |  |  |
Issuance costs of warrant | $ |  | $ 9,400 |  |  |  |  |  |  |  |  |  |  |  |
Issuance of February 2026 Offering of pre-funded warrants | $ |  |  |  |  |  |  |  | $ 32,542 |  |  |  |  |  |
Pre-funded Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
PIPE warrants remain outstanding |  |  |  |  |  |  |  | 23,848,829 |  |  |  |  |  |
Proceeds from issuance of pre-funded warrants, net of issuance costs | $ |  |  |  |  |  |  |  | $ 1 | $ 0 |  |  |  |  |
Issuance of February 2026 Offering of pre-funded warrants | $ |  |  |  |  |  |  |  | $ 33,719 |  |  |  |  |  |
Hercules Capital, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years
Number of options exercisable (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 94,222
Fair value of exercisable options | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 700
At-The-Market Offering |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, shares issued in transaction (in shares) |  |  |  |  |  |  |  |  |  | 5,491,836 |  |  |  |
Consideration received on transaction | $ |  |  |  |  |  |  |  |  |  | $ 54,800 |  |  |  |
Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary share conversion ratio (in shares) |  |  |  | 1 |  |  |  |  |  |  |  |  |  |
Sale of stock, shares issued in transaction (in shares) |  |  | 16,076,750 | 16,076,750 |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) | $ / shares |  |  |  | $ 9.93 |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) | $ / shares |  |  |  | $ 7.78 |  |  |  |  |  |  |  |  |  |
Private Placement | PIPE Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term (in years) |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |
Warrant exercise price (in dollars per share) | $ / shares |  |  | $ 9.93 |  |  |  |  |  |  |  |  |  |  |
Underwritten Offering |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, shares issued in transaction (in shares) |  |  |  |  |  | 15,160,619 |  |  |  |  |  |  |  |
Consideration received on transaction | $ | $ 140,500 |  |  |  |  |  |  |  |  |  |  |  |  |
Underwritten Offering | 2025 ADS Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary share conversion ratio (in shares) |  | 1 |  |  |  |  | 1 |  |  |  |  |  |  |
Sale of stock, shares issued in transaction (in shares) |  | 24,014,728 |  |  |  |  | 24,014,728 |  |  |  |  |  |  |
Term (in years) |  |  |  |  |  |  | 3 years |  |  |  | 3 years |  |  |
Warrant exercise price (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 5.7960 |  |  |  |  |  |  |
Purchase of warrants (in shares) |  |  |  |  |  | 19,898,829 | 24,014,728 |  |  |  | 24,014,728 |  |  |
Threshold consecutive trading days | day |  | 3 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance and exercises of warrants | $ |  |  |  |  |  | $ 203,200 |  |  |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) | (per share) |  |  |  |  |  |  | $ 4.2750 |  |  |  | £ 0.008 |  |  |
Underwritten Offering | Pre-funded Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.0001 |  |  |  |  |  |  |
Purchase of warrants (in shares) | 1,250,000 |  |  |  |  | 19,898,829 | 11,044,720 |  |  |  | 11,044,720 |  |  |
Warrants exercised (in shares) |  |  |  |  |  |  |  | 6,000,000 |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) | $ / shares | $ 7.9999 |  |  |  |  |  | $ 4.2649 |  |  |  |  |  |  |
Underwritten Offering | 2026 ADS Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary share conversion ratio (in shares) | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, shares issued in transaction (in shares) | 17,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) | $ / shares | $ 8.00 |  |  |  |  |  |  |  |  |  |  |  |  |
American Depositary Shares | Initial Public Offering |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount authorized | $ |  |  |  |  | $ 150,000 |  |  |  |  |  |  |  |  |
American Depositary Shares | At-The-Market Offering |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount authorized | $ |  |  |  |  |  |  |  |  |  | $ 150,000 |  |  |  |

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