Side Letter Agreement, dated as of August 5, 2022, among D-Wave Quantum Inc. and Public Sector Pension Investment Board

Reference is hereby made to that certain Transaction Agreement dated as of February 7, 2022 (as the same may be amended or supplemented from time to time in accordance with its terms, the “Transaction Agreement”) entered into by and among DPCM Capital, Inc., a Delaware corporation (“DPCM”), D-Wave Quantum, DWSI Holdings Inc., a Delaware corporation and a direct, wholly-owned subsidiary of D-Wave Quantum, DWSI Canada Holdings ULC, a British Columbia unlimited liability company and a direct, wholly-owned subsidiary of D-Wave Quantum (“CallCo”), D-Wave Quantum Technologies Inc., a British Columbia corporation and a direct, wholly-owned subsidiary of CallCo (“ExchangeCo”), and D-Wave Systems Inc., a British Columbia company (“D-Wave”) (the transactions contemplated pursuant to the Transaction Agreement collectively, the “Business Combination”).

Following the closing of the Business Combination, PSP will own certain shares of common stock of D-Wave Quantum (“D-Wave Quantum Stock”) and certain exchangeable shares of ExchangeCo (“Exchangeable Shares” and together with the D-Wave Quantum Stock, collectively the “Shares”).

It is the desire of D-Wave Quantum and PSP to limit the ability of PSP to vote, whether directly or indirectly, including by way of voting trust, a majority of the voting interests eligible to vote at any meeting of the shareholders of D-Wave Quantum.

At no time during the Restricted Period will PSP exercise the voting rights attached to any of its Shares that would result in PSP voting, whether directly or indirectly, including through any voting trust, more than 49.99% of the voting interests eligible to vote at any meeting of the shareholders of D-Wave Quantum.

For the purposes of this Agreement, “Restricted Period” shall mean the period beginning on the date of this Agreement and ending on the earlier of (i) that date that PSP’s Shares constitute less than 50% of the rights to vote at a meeting of the shareholders of D-Wave Quantum, whether directly or indirectly, including through any voting trust, (ii) the date D-Wave Quantum files its first annual report on SEC Form 10-K, or (iii) the 30th day following written notice of termination of this Agreement given by PSP to D-Wave Quantum via email at the email address set out below.

This Agreement is governed by the laws of the Province of British Columbia and the federal laws of Canada applicable therein.

This Agreement may be executed in one or more counterparts, each of which will be deemed to be an original and all of which taken together will be deemed to constitute one and the same instrument.