FORM OF PARENT STOCKHOLDER VOTING AGREEMENT This Voting Agreement (this Agreement ) is made and entered into as of

FORM OF PARENT STOCKHOLDER VOTING AGREEMENT

This Voting Agreement (this Agreement ) is made and entered into as of July 31, 2023 (the Agreement

Date ), by and among EQRx, Inc., a Delaware corporation (the Company ), and the undersigned, a stockholder of Revolution Medicines, Inc., a Delaware corporation ( Parent , and such stockholder, the

Stockholder ). The Company and the Stockholder are each individually sometimes referred to herein as a Party .

Concurrently with the execution and delivery of this Agreement, Parent, Equinox Merger Sub I, Inc., a Delaware corporation and a wholly owned subsidiary of Parent ( Merger Sub I ), Equinox Merger Sub II LLC, a Delaware limited

liability company and a wholly owned subsidiary of Parent ( Merger Sub II ), and the Company, are entering into an Agreement and Plan of Merger (as it may be amended, supplemented or otherwise modified from time to time, the

Merger Agreement ) that, among other things and subject to the terms and conditions set forth therein, provides for (i) the merger of Merger Sub I with and into the Company, with the Company being the surviving entity in such

merger (the First Merger ), and (ii) as soon as practicable following the First Merger and, in any case, on the same day as the Effective Time, and as the second step in a single integrated transaction with the First Merger,

the merger of the Company with and into Merger Sub II, with Merger Sub II being the surviving entity in such merger (the Second Merger and, together with the First Merger, the Mergers ).

(B) As of the Agreement Date, the Stockholder is the record and/or beneficial owner (within the meaning of Rule 13d-3 under the Exchange Act) of the number of shares of common stock, par value $0.0001 per share, of Parent (the Parent Common Stock ) set forth next to the Stockholder s name on

Schedule A hereto, being all of the shares of Parent Common Stock owned of record or beneficially by the Stockholder as of the Agreement Date (with respect to the Stockholder, the Owned Shares , and the

Owned Shares together with any additional shares of Parent Common Stock or other voting stock that the Stockholder may acquire record and/or beneficial ownership of after the Agreement Date (whether in connection with the exercise of options,

conversion of convertible securities or otherwise), the Stockholder s Covered Shares ).

(C) In connection with the

Company s entering into the Merger Agreement, the Stockholder has agreed to enter into this Agreement with respect to the Stockholder s Covered Shares.

(D) The Stockholder acknowledges that, as an inducement for the Company to enter into the Merger Agreement and to consummate the transactions

contemplated by the Merger Agreement, the Company has asked the Stockholder to enter into this Agreement and the Stockholder is willing to enter into this Agreement.

THEREFORE, in consideration of the foregoing and the respective representations, warranties, covenants and agreements set forth below and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged,

the Parties hereto, intending to be legally bound, do hereby agree as follows:

1. Definitions. Capitalized terms used but not otherwise defined herein shall have

the respective meanings ascribed to such terms in the Merger Agreement. When used in this Agreement, the following terms shall have the meanings assigned to them in this Section 1.

1.1 Termination Time shall mean the earliest to occur of (a) the time that the Required Parent Stockholder Vote has

been obtained, (b) such time as the Merger Agreement shall be validly terminated pursuant to Article 7 thereof, (c) the Effective Time, (d) the time that any amendment to the Merger Agreement is executed in accordance with

Section 8.2 of the Merger Agreement that (i) is effected without the Stockholder s written consent and (ii) increases the economic benefit of the consideration payable to all stockholders of the Company pursuant to the terms of

the Merger Agreement as of the date hereof and (e) the time that the Parent Board effects a Parent Change in Recommendation in accordance with Section 5.4(f) or Section 5.4(g) of the Merger Agreement.

1.2 Transfer shall mean (a) any direct or indirect offer, sale, assignment, encumbrance, pledge, hypothecation,

disposition, or other transfer (by operation of Law or otherwise), either voluntary or involuntary, or entry into any option, put, call, derivative or other Contract, arrangement or understanding with respect to any current or future offer, sale,

assignment, encumbrance, pledge, hypothecation, disposition or other transfer (by operation of Law or otherwise) of any of the Covered Shares or any interest in any of the Covered Shares (in each case other than this Agreement), (b) the deposit of

any of the Covered Shares into any voting trust or similar arrangement, the entry into any voting agreement or arrangement (other than this Agreement and except for customary arrangements with the Stockholder s prime broker and/or custodian for

the sole purpose of holding such Covered Shares for the account of the Stockholder) with respect to any of the Covered Shares or the grant of any proxy or power of attorney (other than this Agreement and except for customary arrangements with the

Stockholder s prime broker and/or custodian for the sole purpose of holding such Covered Shares for the account of the Stockholder) with respect to any of the Covered Shares, or (c) any Contract or commitment (whether or not in writing) to

take any of the actions referred to in the foregoing clauses (a) or (b) above.

2. Agreement to Not Transfer the Covered

2.1 No Transfer of Covered Shares. Until the earlier to occur of (a) the Effective Time and (b) such time as

the Merger Agreement shall be validly terminated pursuant to Article 7 thereof, the Stockholder agrees not to Transfer or cause, consent to or permit the Transfer of any of the Stockholder s Covered Shares, other than with the prior

written consent of the Company or in accordance with and subject to Section 2.2. Any Transfer or attempted Transfer of any of the Stockholder s Covered Shares in violation of this Section 2.1

shall be null and void and of no effect whatsoever.

2.2 Permitted Transfers. Notwithstanding anything herein to the contrary, any

Stockholder (a) may Transfer any of the Stockholder s Covered Shares to a controlled Affiliate or any general or limited partnership, limited liability company or other entity that is an Affiliate (including, for the avoidance of doubt,

where the undersigned is a partnership, to its general partner or a successor partnership or fund, or any other funds managed by such partnership) of the Stockholder; provided, that any such Transfer shall be permitted only if, as a

precondition to such

Transfer, such controlled Affiliate transferee agrees in writing to be bound by each of the terms of, and to assume all of the obligations of the Stockholder under, this Agreement by executing

and delivering a joinder agreement in form and substance reasonably acceptable to the Company, (b) may dispose of or surrender any of the Stockholder s Covered Shares to Parent (or effect a net exercise of a Parent Option or a

net settlement of a Parent RSU) to the extent required to pay the exercise price, tax withholdings or remittance payments in connection with the vesting, settlement or exercise of Parent Options, Parent RSUs or Parent Restricted Stock,

(c) may dispose of or surrender any of the Stockholder s Covered Shares in connection with a broker-assisted sale in the open market of the Stockholder s Covered Shares issued upon (i) cashless exercise of Parent Options expiring

during the term of this Agreement or (ii) settlement or vesting of Parent RSUs or Parent Restricted Stock, in each case, solely up to the amount necessary to pay the exercise price in respect thereof and/or related tax withholdings or

remittance payments; provided, that the Covered Shares received upon vesting, settlement or exercise (other than such shares as are disposed of or surrendered pursuant to clause (b) or (c) above) are subject to the terms of this

Agreement, (d) if the Stockholder is a natural Person or trust affiliated with a natural Person, may sell the Stockholder s Covered Shares under any written plan providing for the trading of Shares in accordance with Rule 10b5-1 under the Exchange Act that is described on Schedule A hereto, or (e) if the Stockholder is a natural Person, may Transfer any of the Stockholder s Covered Shares for estate planning purposes

to a member of the Stockholder s immediate family or an entity, the stockholders, members, and general or limited partners of which include only the Stockholder and/or members of such Stockholder s immediate family; provided, that

any such Transfer shall be permitted only if, as a precondition to such Transfer, such transferee agrees in writing to be bound by each of the terms of, and to assume all of the obligations of the Stockholder under, this Agreement by executing and

delivering a joinder agreement in form and substance reasonably acceptable to the Company, or by will or the Laws of intestacy.

Agreement to Vote the Covered Shares.

3.1 Voting Agreement. Until the Termination Time, at every meeting of Parent s

stockholders at which any of the following matters are to be voted on (and at every adjournment or postponement thereof), and on any action or approval of Parent s stockholders by written consent with respect to any of the following matters,

the Stockholder shall vote (including via proxy) all of the Stockholder s Covered Shares (or cause the holder of record on any applicable record date to vote (including via proxy) all of the Stockholder s Covered Shares) (a) in favor

of the issuance of Parent Common Stock to certain equityholders of the Company pursuant to the Merger Agreement and (b) against (i) any action or agreement that would reasonably be expected to result in any of the conditions to Parent s

obligations set forth in Article 6 under the Merger Agreement not being fulfilled, (ii) any Parent Acquisition Proposal, or any agreement, transaction or other matter that is intended to, or would reasonably be expected to, materially

impede, materially interfere with or materially and adversely affect the consummation of the Mergers and the other transactions contemplated by the Merger Agreement (clauses (a) and (b), the Covered Proposals ).

3.2 Quorum. Until the Termination Time, at every meeting of Parent s stockholders (and at every adjournment or postponement

thereof), the Stockholder shall be represented in person or by proxy at such meeting (or cause the holders of record on any applicable record date to be represented in person or by proxy at such meeting) in order for the Covered Shares to be counted

as present for purposes of establishing a quorum.

3.3 Return of Proxy. The Stockholder shall execute and deliver (or cause the holders

of record to execute and deliver), within five (5) Business Days of receipt, any proxy card or voting instructions it receives that is sent to stockholders of Parent soliciting proxies with respect to any matter described in

Section 3.1, which shall be voted in the manner described in Section 3.1 (with the Company to be promptly notified (and provided reasonable evidence) of such execution and delivery of such proxy

card or voting instructions).

4. Waiver of Appraisal Rights. The Stockholder hereby irrevocably waives all appraisal rights under

Section 262 of the DGCL with respect to all of the Stockholder s Covered Shares owned (beneficially or of record) by the Stockholder, with respect to the Mergers and the transactions contemplated by the Merger Agreement.

5. Transferability of Company Common Stock. Until the earlier to occur of (a) the Effective Time and (b) such time as the

Merger Agreement shall be validly terminated pursuant to Article 7 thereof, the Stockholder agrees not to enter into any option, put, call, derivative or other Contract, arrangement or understanding with respect to any current or future offer,

sale, assignment, encumbrance, pledge, hypothecation, disposition or other transfer (by operation of Law or otherwise), including any hedge, swap or other similar arrangement, of any shares of Company Common Stock (whether or not owned of record or

beneficially by the Stockholder) or any interest in any shares of Company Common Stock (whether or not owned of record or beneficially by the Stockholder), other than with the prior written consent of the Company or as may be specifically permitted

pursuant to a written Contract between the Stockholder and the Company governing the transferability of shares of Company Common Stock or any interest in any shares of Company Common Stock. Any transaction in violation of this

Section 5 shall be null and void and of no effect whatsoever.

6. New Shares. The Stockholder agrees that

any Covered Shares that the Stockholder purchases or with respect to which the Stockholder otherwise acquires record or beneficial ownership (including pursuant to a stock split, reverse stock split, stock dividend or distribution or any change in

Parent Common Stock by reason of any recapitalization, reorganization, combination, reclassification, exchange of shares or similar transaction) after the Agreement Date and prior to the earlier to occur of (i) the Effective Time and

(ii) such time as the Merger Agreement shall be validly terminated pursuant to Article 7 thereof shall be subject to the terms and conditions of this Agreement to the same extent as if they comprised the Covered Shares.

7. Fiduciary Duties; Legal Obligations. The Stockholder is entering into this Agreement solely in its capacity as the record holder or

beneficial owner of the Stockholder s Covered Shares. Nothing in this Agreement shall in any way limit or affect any actions taken by the Stockholder in the Stockholder s capacity as a director or officer of Parent or any of its Affiliates

or from complying with the Stockholder s fiduciary duties or other legal obligations while acting in such capacity as a director or officer of Parent or any of its Affiliates, in each case, if applicable.

8. Representations and Warranties of the Stockholder. The Stockholder hereby

represents and warrants to the Company that:

8.1 Due Authority. If the Stockholder is a natural Person, the Stockholder has the

full power and capacity to make, enter into and carry out the terms of this Agreement. If the Stockholder is not a natural person, (a) the Stockholder is duly organized, validly existing and in good standing in accordance with the Laws of its

jurisdiction of formation, as applicable, and (b) the execution and delivery of this Agreement, the performance of the Stockholder s obligations hereunder, and the consummation of the transactions contemplated hereby have been validly

authorized, and no other consents or authorizations are required to give effect to this Agreement or the transactions contemplated by this Agreement. This Agreement has been duly and validly executed and delivered by the Stockholder and constitutes

a valid and binding obligation of the Stockholder enforceable against it in accordance with its terms, subject to the Bankruptcy and Equity Exception.

8.2 Ownership of the Covered Shares. (a) The Stockholder is, as of the Agreement Date, the beneficial or record owner of all of

the Stockholder s Covered Shares, free and clear of any and all Encumbrances, other than those (i) created by this Agreement, (ii) arising under the organizational documents of Parent as in effect as of the date hereof or

(iii) arising under applicable securities Laws and (b) the Stockholder has sole voting power over all of the Covered Shares beneficially owned by the Stockholder. As of the Agreement Date, the Stockholder has not entered into any agreement

to Transfer any Covered Shares. As of the Agreement Date, the Stockholder does not own, beneficially or of record, any shares of Parent Common Stock or other voting stock of Parent (or any securities convertible, exercisable or exchangeable for, or

rights to purchase or acquire, any shares of Parent Common Stock or other voting stock of Parent) other than the Covered Shares.

No Conflict; Consents.

a. The execution and delivery of this Agreement by the Stockholder does not, and the performance by the

Stockholder of its obligations under this Agreement and the compliance by the Stockholder with any provisions hereof does not and will not: (i) conflict with or violate any Laws applicable to the Stockholder, or (ii) result in any breach

of or constitute a default (or an event that with notice or lapse of time or both would become a default) under, or give to others any rights of termination, amendment, acceleration or cancellation of, or result in the creation of an Encumbrance on

any of the Covered Shares beneficially owned by the Stockholder pursuant to any Contract or obligation to which the Stockholder is a party or by which the Stockholder is subject.

b. No consent, approval, Order, Governmental Authorization or authorization of, or registration, notice, declaration or, except as required

by the rules and regulations promulgated under the Exchange Act, filing with, any Governmental Body or any other Person, is required by or with respect to the Stockholder in connection with the execution and delivery of this Agreement or the

consummation by the Stockholder of the transactions contemplated hereby.