Altss Research / Venture case 16
Builder.ai
Builder.ai’s UK operating company was ordered wound up in September 2025. Its last private financing had placed the group in billion-dollar valuation territory.
Altss Research · Evidence reviewed · Historical event record
Historical private valuation
$1.5bnAs reported May 23, 2025: approximately $1.5 billion at the last fundraising. This retrospective reporting date is used because the actual financing close date is not established here. The separate May 2023 announcement was conditional.
Wind-down
No sale priceUK operating company ordered wound up. The statutory notice records a winding-up order against Engineer.ai Global Limited, company number 10998363, on September 10, 2025.
These figures have different valuation bases and dates. Their difference is not a measure of investor losses. Methodology ↗
The documented timeline
Series D announced
Builder.ai announced more than $250 million of Series D funding led by Qatar Investment Authority, with other new and existing investors; the transaction was subject to closing conditions.
Winding-up order made
The UK statutory record identifies the operating company, order date and Official Receiver.
Source documents
Publication and access dates identify the evidence used for this case.
Bloomberg / The Straits Times · Financial reporting · Published May 23, 2025 · Accessed Oct 26, 2026
Builder.ai / GlobeNewswire · Primary source · Published May 23, 2023 · Accessed Oct 26, 2026
The Gazette · Primary source · Published Sep 16, 2025 · Accessed Oct 26, 2026
Logo: Builder.ai logo source. Company trademark rights remain.