X0609 4 2026-06-04 0 0001907982 D-Wave Quantum Inc. QBTS 0001198055 WEST STEVEN M false C/O D-WAVE QUANTUM INC. 2650 EAST BAYSHORE ROAD PALO ALTO CA 94303 1 0 0 0 0 Common Stock, par value $0.0001 per share ("Common Stock") 2026-06-04 4 A 0 9357 0 A 29194 D Common Stock, par value $0.0001 per share ("Common Stock") 82 I By spouse Common Stock, par value $0.0001 per share ("Common Stock") 118840 I See Footnote Consists of restricted stock units ("RSUs"), each RSU representing the right to receive one share of Common Stock of the Issuer, that will vest on May 31, 2027, subject to the reporting person's continued service to the Issuer. Includes 9,357 unvested RSUs. The reporting person disclaims beneficial ownership of these shares of Common Stock, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such shares of Common Stock for purposes of Section 16 or for any other purpose. West-Karam Family Trust is the record holder of such securities. The reporting person is trustee of the West-Karam Family Trust, of which the reporting person and members of the reporting person's immediate family are the sole beneficiaries. The reporting person remains the beneficial owner of the securities held by the trust. Steven M. West 2026-06-05