D-Wave Quantum Inc. (QBTS) · Material Event (8-K) SEC Filing

Item 7.01 Regulation FD Disclosure. On July 27, 2026, D-Wave Quantum Inc. ( D-Wave ) announced that AT&T has signed an agreement to expand its use of D-Wave's quantum computing technology and plans to use the technology to address complex optimization challenges across its network operations. AT&T's initial focus is on layering D-Wave's annealing quantum computing technology into the tools that are already powering AT&T s agentic AI solutions. Agentic tools in AT&T s network are improving network operations like outage detection and management, reducing customer downtime by 12 million hours in 2025. New quantum capabilities could help increase the benefits of agents in AT&T s network operations. AT&T is also evaluating D-Wave's forthcoming gate-model systems for potential applications in quantum security and quantum communications. This agreement is part of AT&T's broader innovation strategy, which applies quantum computing, AI, automation, advanced analytics, and software-defined infrastructure to modernize how the network is built, run, and optimized. A copy of the press release is attached as Exhibit 99.1. The information in this

Item 9.01 Financial Statements and Exhibits . (d) Exhibits Exhibit No. Description 99.1 Press release, dated July 27, 2026. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: July 27, 2026 D-Wave Quantum Inc. By: /s/ Alan Baratz Name: Alan Baratz Title: President & Chief Executive Officer