X0609 4 2026-09-15 0 0001907982 D-Wave Quantum Inc. QBTS 0002156505 GOLKOV GREGORY false C/O D-WAVE QUANTUM INC. 2650 EAST BAYSHORE ROAD PALO ALTO CA 94303 0 1 0 0 Acting CFO & SVP, Finance 0 Common Stock, par value $0.0001 per share ("Common Stock") 2026-09-15 4 F 0 1132 16.83 D 399791 D Common Stock, par value $0.0001 per share ("Common Stock") 2026-09-17 4 A 0 27081 0 A 426872 D Represents shares of Common Stock withheld by the Issuer to satisfy tax withholding requirements in connection with the vesting of restricted stock units ("RSUs"). Includes 220,255 unvested RSUs and 8,125 RSUs that vested on September 18, 2026; as of the date hereof, the shares of Common Stock issuable in respect of such vested RSUs have not yet been delivered. Consists of RSUs granted on September 17, 2026 (the "Acting CFO Grant"), each RSU representing the right to receive one share of Common Stock of the Issuer. As further described in the Issuer's Form 8-K/A filed on September 22, 2026, the Acting CFO Grant will vest ratably on a quarterly basis over one year, with the first quarterly vesting to occur on December 2, 2026, provided that any unvested RSUs will immediately vest on the employment start date of the Issuer's new Chief Financial Officer, subject to the Reporting Person's continued service through such vesting dates. Includes 247,336 unvested RSUs and 8,125 RSUs that vested on September 18, 2026; as of the date hereof, the shares of Common Stock issuable in respect of such vested RSUs have not yet been delivered. /s/ Gregory Golkov 2026-09-24