AMENDED Investor Update – Divestment of InterplX Expense

Market Release 2 October 2025 Investor Update – Divestment of InterplX Expense Assets Serko Limited (NZX & ASX : SKO) today announces that it completed the sale of its InterplX expense management assets in the US to CerebriAI on 30 September 2025 (US Central Time). Strategic Alignment This divestment is part of Serko’s ongoing strategy to simplify operations and sharpen focus on its core growth priorities. Serko’s vision is to deliver an open, connected platform that brings together a marketplace of travel-related content and services, including best-in-class payment and expense solutions. In line with this vision, Serko has established integration and referral partnerships with several leading US payment and expense providers and will continue to expand these relationships rather than operating a standalone US focused expense product. Serko will continue to operate its Zeno expense solution. Financial Impact Under the terms of the transaction: • Proceeds will be received in the form of royalties on revenues generated from current and future InterplX customers. • The sale is expected to result in a non-cash accounting loss of approximately $2 million, primarily reflecting goodwill associated with the InterplX business. • The sale is part of Serko’s ongoing efficiency initiatives and is expected to have a positive impact on Serko’s ongoing earnings. FY26 Guidance Reaffirmed Serko’s FY26 guidance, provided on 20 May 2025, remains unchanged • Total Income of $115m–$123m • Total Spend of $127m–$133m Risks to Serko achieving its FY26 guidance include macro-economic and geopolitical factors, and currency and ARPCRN movements. Forward-looking Statements This release contains forward-looking statements, which reflect views at the date of this announcement, and are not guarantees of future performance. These statements are based on current expectations and assumptions as at the date of this release and are subject to risks and uncertainties, including those described above and in Serko’s other filings. Serko’s actual results, or performance, may differ materially from those expressed or implied in any forward-looking statements. ENDS Released for and on behalf of Serko Limited by Shane Sampson, Chief Financial Officer FURTHER INFORMATION Investor relations Shane Sampson Chief Financial Officer 64 9 884 5916 investor.relations@serko.com