Document:

EX-4.3

 Exhibit 4.3 

DESCRIPTION OF SECURITIES 

The following is a summary of the rights of our common stock and preferred stock. This summary is qualified by reference to the complete
text of i) our second amended and restated certificate of incorporation (“certificate of incorporation”) ii) bylaws and iii) Warrant Agreement (as defined below) which are filed as exhibits to this Annual Report on Form 10-K. 
 General 

Our certificate of incorporation authorizes us to issue up to 1,000,000,000 shares of common stock, $0.0001 par value per share, and 20,000,000
shares of preferred stock, par value $0.0001 per share. 
 Common Stock 

Voting Rights 
 Except as otherwise
required by law or as otherwise provided in any certificate of designation for any series of preferred stock, each holders of common stock possess all voting power for the election of our directors and all other matters requiring stockholder action.
Holders of common stock are entitled to one vote per share on matters to be voted on by stockholders. 
 Dividend Rights 

Subject to preferences that may apply to any then-outstanding preferred stock, the holders of common stock may be entitled to receive dividends
out of legally available funds if the board of directors, in its discretion, determines to issue dividends and then only at the times and in the amounts that the board of directors may determine. We do not anticipate paying any cash dividends in the
foreseeable future. 
 Liquidation Rights 

In the event of our voluntary or involuntary liquidation, dissolution, distribution of assets
or winding-up, the holders of common stock will be entitled to receive an equal amount per share of all of our assets of whatever kind available for distribution to stockholders, after the rights of
the holders of the preferred stock, if any, have been satisfied. 
 Preemptive or Similar Rights 

Our stockholders have no preemptive or other subscription rights and there are no sinking fund or redemption provisions applicable to our
common stock. 
 Preferred Stock 
 Under
our certificate of incorporation, our board of directors may, without further action by our stockholders, fix the rights, preferences, privileges and restrictions of up to an aggregate of 20,000,000 shares of preferred stock in one or more series
and authorize their issuance. These rights, preferences and privileges could include dividend rights, conversion rights, voting rights, terms of redemption, liquidation preferences and the number of shares constituting any series or the designation
of such series, any or all of which may be greater than the rights of common stock. Any issuance of preferred stock could adversely affect the voting power of holders of common stock and the likelihood that such holders would receive dividend
payments and payments on liquidation. In addition, the issuance of preferred stock could have the effect of delaying, deterring or preventing a change of control or other corporate action. We have no present plans to issue any shares of preferred
stock. 
 Transfers 
 The corporation
shall have power to enter into and perform any agreement with any number of stockholders of any one or more classes or series of stock of the corporation to restrict the transfer of shares of stock of the corporation of any one or more classes or
series owned by such stockholders in any manner not prohibited by the DGCL. 

 Warrants 

Public Warrants 
 Each outstanding
Public Warrant entitles the registered holder to purchase one share of common stock at a price of $11.50 per share. The Public Warrants will expire five years after the completion of the business combination (the “Business Combination”),
at 5:00 p.m., New York City time, or earlier upon redemption or liquidation. 
 We will not be obligated to deliver any shares of common
stock pursuant to the exercise of a Public Warrant and will have no obligation to settle such warrant exercise unless a registration statement under the Securities Act with respect to the shares of common stock underlying the Public
Warrants is then effective and a prospectus relating thereto is current, subject to our satisfying our obligations described below with respect to registration. No Public Warrant will be exercisable and we will not be obligated to issue shares of
common stock upon exercise of a Public Warrant unless the common stock issuable upon such warrant exercise has been registered, qualified or deemed to be exempt under the securities laws of the state of residence of the registered holder of the
Public Warrants. In the event that the conditions in the two immediately preceding sentences are not satisfied with respect to a Public Warrant, the holder of such warrant will not be entitled to exercise such warrant and such warrant may have no
value and expire worthless. In the event that a registration statement is not effective for the exercised Public Warrants, the purchaser of a Public Unit containing such Public Warrant will have paid the full purchase price for the unit solely for
the share of common stock underlying such Public Unit. 
 We filed with the U.S. Securities and Exchange Commission (the “SEC”)
and have an effective registration statement for covering the issuance, under the Securities Act, of the shares of common stock issuable upon exercise of the Public Warrants, until the expiration of the Public Warrants. Notwithstanding the above, if
the common stock is at the time of any exercise of a Public Warrant not listed on a national securities exchange such that it satisfies the definition of a “covered security” under Section 18(b)(1) of the Securities Act, we may, at
our option, require holders of Public Warrants who exercise their warrants to do so on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act and, in the event we so elect, we will not be required to file or
maintain in effect a registration statement, but we will be required to use our best efforts to register or qualify the shares under applicable blue sky laws to the extent an exemption is not available. 

Redemption of warrants when the price per share of the common stock equals or exceeds $18.00. Once
the Public Warrants become exercisable, we may call the Public Warrants for redemption: 
  

	 	•	 in whole and not in part; 

 

	 	•	 at a price of $0.01 per Public Warrant; 

 

	 	•	 upon not less than 30 days’ prior written notice of redemption to each warrant holder; and

  

	 	•	 if, and only if, the reported last sale price of the common stock equals or exceeds $18.00 per share for any 20
trading days within a 30-trading day period ending three business days before we send the notice of redemption to the warrant holders. 

If and when the Public Warrants become redeemable by us, we may exercise our redemption right even if we are unable to register or qualify the
underlying securities for sale under all applicable state securities laws. 
 We have established the last of the redemption criterion
discussed above to prevent a redemption call unless there is at the time of the call a significant premium to the warrant exercise price. If the foregoing conditions are satisfied and we issue a notice of redemption of the Public Warrants, each
warrant holder will be entitled to exercise its Public Warrant prior to the scheduled redemption date. However, the price of the common stock may fall below the $18.00 redemption trigger price as well as the $11.50 (for whole shares) warrant
exercise price after the redemption notice is issued. 

 Redemption of warrants when the price per share of the common stock equals or exceeds
$10.00. Once the Public Warrants become exercisable, we may call the Public Warrants for redemption: 
  

	 	•	 in whole and not in part; 

 

	 	•	 at $0.10 per warrant upon a minimum of 30 days’ prior written notice of redemption provided that holders
will be able to exercise their warrants on a cashless basis prior to redemption and receive that number of shares determined by reference to the table in the Warrant Agreement, as described under the heading “Redemption,” based on the
redemption date and the “fair market value” (as defined below) of the common stock except as otherwise described below; and upon a minimum of 30 days’ prior written notice of redemption; and 

 

	 	•	 if, and only if, the closing price of the common stock equals or exceeds $10.00 per share (as adjusted for
adjustments to the number of shares issuable upon exercise or the exercise price of a warrant) for any 20 trading days within the 30-trading day period ending three trading days before we send the
notice of redemption to the warrant holders. 

 We can redeem the Public Warrants when the shares of common stock are
trading at a price starting at $10.00, which is below the exercise price of $11.50, because it will provide certainty with respect to our capital structure and cash position while providing warrant holders with fair value (in the form of common
stock). If we choose to redeem the Public Warrants when the common stock is trading at a price below the exercise price of the Public Warrants, this could result in the warrant holders receiving fewer common stock than they would have received if
they had chosen to wait to exercise their warrants for common stock if and when such shares of common stock were trading at a price higher than the exercise price of $11.50. 

No fractional shares of common stock will be issued upon redemption. If, upon redemption, a holder would be entitled to receive a fractional
interest in a share, we will round down to the nearest whole number of the number of shares of common stock to be issued to the holder. 

Redemption Procedures and Cashless Exercise. If we call the Public Warrants for redemption as described above, our management will
have the option to require any holder that wishes to exercise its Public Warrant to do so on a “cashless basis.” In determining whether to require all holders to exercise their warrants on a “cashless basis,” our management will
consider, among other factors, our cash position, the number of Public Warrants that are outstanding and the dilutive effect on our stockholders of issuing the maximum number of shares of common stock issuable upon the exercise of our Public
Warrants. If our management takes advantage of this option, all holders of Public Warrants would pay the exercise price by surrendering their Public Warrants for that number of shares of common stock equal to the lesser of (A) the quotient
obtained by dividing (x) the product of the number of shares of common stock underlying the warrants, multiplied by the difference between the exercise price of the warrants and the “Fair Market Value” (defined below) by (y) the
fair market value and (B) 0.361. The “Fair Market Value” shall mean the average reported last sale price of the common stock for the 10 trading days ending on the third trading day prior to the date on which the notice of redemption is
sent to the holders of Public Warrants. If our management takes advantage of this option, the notice of redemption will contain the information necessary to calculate the number of shares of common stock to be received upon exercise of the 

Public Warrants, including the “fair market value” in such case. Requiring a cashless exercise in this manner will reduce the number
of shares to be issued and thereby lessen the dilutive effect of a warrant redemption. We believe this feature is an attractive option to us if we do not need the cash from the exercise of the Public Warrants following the consummation of the
Business Combination. If we call our Public Warrants for redemption and our management does not take advantage of this option, the Sponsor and its permitted transferees would still be entitled to exercise their Private Warrants for cash or on a
cashless basis using the same formula described above that other warrant holders would have been required to use had all warrant holders been required to exercise their Public Warrants on a cashless basis, as described in more detail below. 

A holder of a warrant may notify us in writing in the event it elects to be subject to a requirement that such holder will not have the right
to exercise such warrant, to the extent that after giving effect to such exercise, such person (together with such person’s affiliates), to the warrant agent’s actual knowledge, would beneficially own in excess of 4.9% or 9.8% (as
specified by the holder) of the common stock outstanding immediately after giving effect to such exercise. 

 Anti-Dilution Adjustments. If the number of outstanding shares of common stock is
increased by a stock dividend payable in shares of common stock, or by a split-up of shares of common stock or other similar event, then, on the effective date of such stock dividend, split-up or similar event, the number of shares of common stock issuable on exercise of each Public Warrant will be increased in proportion to such increase in the outstanding shares of common
stock. A rights offering to holders of common stock entitling holders to purchase shares of common stock at a price less than the fair market value will be deemed a stock dividend of a number of shares of Class A Stock equal to the product of
(a) the number of shares of common stock actually sold in such rights offering (or issuable under any other equity securities sold in such rights offering that are convertible into or exercisable for common stock) multiplied by (b) 1 minus the
quotient of (x) the price per share of common stock paid in such rights offering divided by (y) the fair market value. For these purposes (i) if the rights offering is for securities convertible into or exercisable for common stock,
in determining the price payable for common stock, there will be taken into account any consideration received for such rights, as well as any additional amount payable upon exercise or conversion and (ii) fair market value means the volume
weighted average price of common stock as reported during the 10 trading day period ending on the trading day prior to the first date on which the shares of common stock trade on the applicable exchange or in the applicable market, regular way,
without the right to receive such rights. 
 If the number of outstanding shares of our common stock is decreased by a consolidation,
combination, reverse stock split or reclassification of shares of common stock or other similar event, then, on the effective date of such consolidation, combination, reverse stock split, reclassification or similar event, the number of shares of
common stock issuable on exercise of each Public Warrant will be decreased in proportion to such decrease in outstanding shares of common stock. 

Whenever the number of shares of common stock purchasable upon the exercise of the Public Warrants is adjusted, as described above, the
warrant exercise price will be adjusted by multiplying the warrant exercise price immediately prior to such adjustment by a fraction (x) the numerator of which will be the number of shares of common stock purchasable upon the exercise of the
Public Warrants immediately prior to such adjustment, and (y) the denominator of which will be the number of shares of common stock so purchasable immediately thereafter. 

In case of any reclassification or reorganization of the outstanding shares of common stock (other than those described above or that solely
affects the par value of such shares of common stock), or in the case of any merger or consolidation of us with or into another corporation (other than a consolidation or merger in which we are the continuing corporation and that does not result in
any reclassification or reorganization of our outstanding shares of common stock), or in the case of any sale or conveyance to another corporation or entity of the assets or other property of us as an entirety or substantially as an entirety in
connection with which we are dissolved, the holders of the Public Warrants will thereafter have the right to purchase and receive, upon the basis and upon the terms and conditions specified in the Public Warrants and in lieu of the shares of our
common stock immediately theretofore purchasable and receivable upon the exercise of the rights represented thereby, the kind and amount of shares of stock or other securities or property (including cash) receivable upon such reclassification,
reorganization, merger or consolidation, or upon a dissolution following any such sale or transfer, that the holder of the Public Warrants would have received if such holder had exercised their Public Warrants immediately prior to such event. If
less than 70% of the consideration received by the holders of common stock in such a transaction is payable in the form of common stock in the successor entity that is listed for trading on a national securities exchange or is quoted in an established over-the-counter market, or is to be so listed for trading or quoted immediately following such event, and if the registered holder of the Public Warrant
properly exercises the Public Warrant within thirty days following public disclosure of such transaction, the warrant exercise price will be reduced as specified in the Continental Warrant Agreement based on the Black-Scholes value (as defined in
the Continental Warrant Agreement) of the Public Warrant. 
 The Public Warrants have been registered form under the Continental Warrant
Agreement between Continental Stock Transfer & Trust Company, as warrant agent, and us. The Continental Warrant Agreement provides that the terms of the Public Warrants may be amended without the consent of any holder to cure any ambiguity
or correct any defective provision, but requires the approval by the holders of at least 50% of the then outstanding Public Warrants to make any change that adversely affects the interests of the registered holders of Public Warrant. 

 The Public Warrants may be exercised upon surrender of the warrant certificate on or prior
to the expiration date at the offices of the warrant agent, with the exercise form on the reverse side of the warrant certificate completed and executed as indicated, accompanied by full payment of the exercise price (or on a cashless basis, if
applicable), by certified or official bank check payable to us, for the number of Public Warrants being exercised. The warrant holders do not have the rights or privileges of holders of common stock and any voting rights until they exercise their
warrants and receive shares of common stock. After the issuance of shares of common stock upon exercise of the Public Warrants, each holder will be entitled to one vote for each share held of record on all matters to be voted on by stockholders.

 No fractional shares will be issued upon exercise of the Public Warrants. If, upon exercise of the Public Warrants, a holder would be
entitled to receive a fractional interest in a share, we will, upon exercise, round down to the nearest whole number of shares of common stock to be issued to the warrant holder. 

Anti-Takeover Provisions 
 Section 203 of the
Delaware General Corporation Law 
 We are subject to Section 203 of the DGCL, which prohibits a publicly held Delaware
corporation from engaging in any business combination with any interested stockholder for a period of three years after the date that such stockholder became an interested stockholder, with the following exceptions: 

 

	 	•	 before such date, the board of directors of the corporation approved either the business combination or the
transaction that resulted in the stockholder becoming an interested stockholder; 

  

	 	•	 upon completion of the transaction that resulted in the stockholder becoming an interested stockholder, the
interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction began, excluding for purposes of determining the voting stock outstanding, but not the outstanding voting stock owned by the
interested stockholder, those shares owned (1) by persons who are directors and also officers and (2) employee stock plans in which employee participants do not have the right to determine confidentially whether shares held subject to the
plan will be tendered in a tender or exchange offer; or 

  

	 	•	 on or after such date, the business combination is approved by the board of directors and authorized at an
annual or special meeting of the stockholders, and not by written consent, by the affirmative vote of at least 66 2/3% of the outstanding voting stock that is not owned by the interested stockholder. 

In general, Section 203 defines a “business combination” to include the following: 

 

	 	•	 any merger or consolidation involving the corporation and the interested stockholder; 

 

	 	•	 any sale, transfer, pledge or other disposition of 10% or more of the assets of the corporation involving the
interested stockholder; 

  

	 	•	 subject to certain exceptions, any transaction that results in the issuance or transfer by the corporation of
any stock of the corporation to the interested stockholder; 

  

	 	•	 any transaction involving the corporation that has the effect of increasing the proportionate share of the
stock or any class or series of the corporation beneficially owned by the interested stockholder; or 

  

	 	•	 the receipt by the interested stockholder of the benefit of any loans, advances, guarantees, pledges or other
financial benefits by or through the corporation. 

 In general, Section 203 defines an “interested
stockholder” as an entity or person who, together with the person’s affiliates and associates, beneficially owns or within three years prior to the time of determination of interested stockholder status did own, 15% or more of the
outstanding voting stock of the corporation. 

 A Delaware corporation may “opt out” of these provisions with an express provision
in its original certificate of incorporation or an express provision in its amended and restated certificate of incorporation or amended and restated bylaws resulting from a stockholders’ amendment approved by at least a majority of the
outstanding voting shares. We have not opted out of these provisions. As a result, mergers or other takeover or change in control attempts of us may be discouraged or prevented. 

Certificate of Incorporation and Bylaws 

Among other things, our Certificate of Incorporation and Bylaws: 
  

	
	 •   permit our board of directors to issue up to 20,000,000 shares of
preferred stock, with any rights, preferences and privileges as they may designate, which may include the right to approve an acquisition or other change of control;

	
	 •   provide that the authorized number of directors may be changed only by
resolution of our board of directors;

	
	 •   provide that, subject to the rights of any series of preferred stock to
elect directors, directors may only be removed with cause, which removal may be effected, subject to any limitation imposed by law, by the holders of at least 66 2/3% of the voting power of all of our then-outstanding shares of the capital stock
entitled to vote generally at an election of directors;

	
	 •   provide that all vacancies, including newly created directorships, may,
except as otherwise required by law, be filled by the affirmative vote of a majority of directors then in office, even if less than a quorum;

	
	 •   require that any action to be taken by our stockholders must be
effected at a duly called annual or special meeting of stockholders and not be taken by written consent or electronic transmission;

	
	 •   provide that stockholders seeking to present proposals before a meeting
of stockholders or to nominate candidates for election as directors at a meeting of stockholders must provide advance notice in writing, and also specify requirements as to the form and content of a stockholder’s notice;

	
	 •   provide that special meetings of our stockholders may be called by the
chairperson of our board of directors, our Chief Executive Officer, or by the board of directors pursuant to a resolution adopted by the majority of the Board; and

	
	 •   not provide for cumulative voting rights, therefore allowing the
holders of a majority of the shares of common stock entitled to vote in any election of directors to elect all of the directors standing for election, if they should so choose.

 The amendment of any of these provisions would require approval by the holders of at least 66 2/3% of the
voting power of all of our then-outstanding capital stock entitled to vote generally in the election of directors, voting together as a single class. 

The combination of these provisions will make it more difficult for our existing stockholders to replace our board of directors as well as for
another party to obtain control of us by replacing our board of directors. Since our board of directors has the power to retain and discharge our officers, these provisions could also make it more difficult for existing stockholders or another party
to effect a change in management. In addition, the authorization of undesignated preferred stock makes it possible for our board of directors to issue preferred stock with voting or other rights or preferences that could impede the success of any
attempt to change our control. 
 These provisions are intended to enhance the likelihood of continued stability in the composition of our
board of directors and its policies and to discourage coercive takeover practices and inadequate takeover bids. These provisions are also designed to reduce our vulnerability to hostile takeovers and to discourage certain tactics that may be used in
proxy fights. However, such provisions could have the effect of discouraging others from making tender offers for our shares and may have the effect of delaying changes in our control or management. As a consequence, these provisions may also
inhibit fluctuations in the market price of our stock. 

 The Certificate of Incorporation provides that the Court of Chancery of the State of
Delaware will be the exclusive forum for actions or proceedings brought under Delaware statutory or common law: (1) any derivative action or proceeding brought on our behalf; (2) any action asserting a breach of fiduciary duty owed by any
of our current or former directors, officers or stockholders, to us or our stockholders; (3) any action asserting a claim against us arising under the Delaware General Corporation Law; (4) any action regarding the certificate of
incorporation or our Bylaws (as either may be amended from time to time); (5) any action as to which the Delaware General Corporate Law confers jurisdiction to the Court of Chancery of the State of Delaware; (6) any action asserting a claim
against us that is governed by the internal affairs doctrine, in all cases to the fullest extent permitted by law and subject to the court having personal jurisdiction over the indispensable parties named as defendants. The Certificate of
Incorporation further provides that the federal district courts of the United States of America will be the exclusive forum for resolving any complaint asserting a cause of action arising under the Securities Act. 

Section 27 of the Exchange Act creates exclusive federal jurisdiction over all suits brought to enforce any duty or liability created by
the Exchange Act or the rules and regulations thereunder. As a result, the exclusive forum provision of our Certificate of Incorporation will not apply to suits brought to enforce any duty or liability created by the Exchange
Act or any other claim for which the federal courts have exclusive jurisdiction. 
 Although we believe this provision benefits us by
providing increased consistency in the application of Delaware law in the types of lawsuits to which it applies, a court may determine that this provision is unenforceable, and to the extent it is enforceable, the provision may have the effect of
discouraging lawsuits against our directors and officers, although our stockholders will not be deemed to have waived our compliance with federal securities laws and the rules and regulations thereunder and therefore bring a claim in another
appropriate forum. Additionally, we cannot be certain that a court will decide that this provision is either applicable or enforceable, and if a court were to find the choice of forum provision contained in the certificate of incorporation to be
inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could harm our business, operating results and financial condition.EX-10.18

 Exhibit 10.18 

Form of RSU Agreement (Sell to Cover) 

IONQ, INC. 

RSU AWARD GRANT NOTICE 

(2021 EQUITY INCENTIVE PLAN) 

IonQ, Inc. (the “Company”) has awarded to you (the “Participant”) the number of restricted stock units
specified and on the terms set forth below in consideration of your services (the “RSU Award”). Your RSU Award is subject to all of the terms and conditions as set forth herein and in the IonQ, Inc. 2021 Equity Incentive Plan
(the “Plan”) and the Award Agreement (the “Award Agreement”), which are attached hereto and incorporated herein in their entirety. Capitalized terms not explicitly defined herein but defined in the
Plan or the Award Agreement shall have the meanings set forth in the Plan or the Award Agreement. 
 Participant:     

Date of Grant:     
 Vesting Commencement
Date:     
 Number of Restricted Stock Units:     

 

			
	Vesting Schedule:    	  	[                                      
                                         
                                         
    ]
		
	Issuance Schedule:	  	One share of Common Stock will be issued at the time set forth in Section 5 of the Award Agreement for each restricted stock unit which vests.
		
	 Participant

Acknowledgements:  
	  	By the Participant’s signature below or by electronic acceptance or authentication in a form authorized by the Company, the Participant understands and agrees that:

  

	 	•	 	 The RSU Award is governed by this Restricted Stock Unit Grant Notice, and the provisions of the Plan and the
Award Agreement, all of which are made a part of this document. Unless otherwise provided in the Plan, this Restricted Stock Unit Grant Notice and the Award Agreement (together, the “Agreement”) may not be modified, amended
or revised except in a writing signed by the Participant and a duly authorized officer of the Company. 

  

	 	•	 	 To the fullest extent permitted under the Plan and applicable law, any Withholding Taxes (as defined in the Award
Agreement) applicable to the RSU Award will be satisfied through the sale of a number of the shares of Common Stock issuable in settlement of the RSU Award as determined in accordance with Section 4 of the Award Agreement and the remittance of
the cash proceeds to the Company. Under the Agreement, the Company or, if different, the Participant’s employer is authorized and directed by the Participant to make payment from the cash proceeds of this sale directly to the appropriate tax or
social security authorities in an amount equal to the taxes required to be remitted. The Participant acknowledges and agrees that, as a result of the Participant’s authorization, the Company will have the authority to administer the
Mandatory Sell to Cover (as defined in the Award Agreement) in connection with the Participant’s receipt of this RSU Award. 

  

	 	•	 	 You acknowledge that you are familiar with and agree to continued compliance with the mutual promises and
covenants contained in the Employee Confidential Information, Inventions, Non-Solicitation and Non-Competition Agreement that you were required, as a condition of your
employment by the Company, to execute. 

  

	 	•	 	 The Agreement sets forth the entire understanding between the Participant and the Company regarding the
acquisition of Common Stock and supersedes all prior oral and written agreements, promises and/or representations on that subject with the exception of (i) other equity awards previously granted to you, and (ii) any written employment
agreement, offer letter, severance agreement, written severance plan or policy, or other written agreement between the Company and you in each case that specifies the terms that should govern this RSU Award. 

 By accepting this RSU Award, the Participant acknowledges having received and read the Restricted Stock Unit
Grant Notice, the Award Agreement and the Plan and agrees to all of the terms and conditions set forth in these documents. The Participant consents to receive Plan and related documents by electronic delivery and to participate in the Plan through
an on-line or electronic system established and maintained by the Company or another third party designated by the Company. 
  

									
	IONQ, INC.:	  		  	PARTICIPANT:
				
	By:	  	              
	  		  	
                 

	Signature	  		  	Signature
	Title:	  	              
	  		  	Date:	  	              

	Date:	  	              
	  		  		  	

 ATTACHMENTS: Award Agreement, 2021 Equity Incentive Plan 

 ATTACHMENT I 

IONQ, INC. 
 AWARD
AGREEMENT 
 (2021 EQUITY INCENTIVE PLAN) 

As reflected by your RSU Award Grant Notice (“Grant Notice”), IonQ, Inc. (the “Company”) has
granted you a RSU Award under the IonQ, Inc. 2021 Equity Incentive Plan (the “Plan”) for the number of restricted stock units as indicated in your Grant Notice (the “RSU Award”). The terms of your RSU
Award as specified in this Award Agreement for your RSU Award (this “Award Agreement”) and the Grant Notice constitute your “Agreement”. Defined terms not explicitly defined in this Award Agreement but
defined in the Grant Notice or the Plan shall have the same definitions as in the Grant Notice or Plan, as applicable. 
 The general terms
applicable to your RSU Award are as follows: 
 1. GOVERNING PLAN DOCUMENT. Your
RSU Award is subject to all the provisions of the Plan, including but not limited to the provisions in: 
 (a) Section 6 of the Plan
regarding the impact of a Capitalization Adjustment, dissolution, liquidation, or Corporate Transaction on your RSU Award; 
 (b)
Section 9(e) of the Plan regarding the Company’s retained rights to terminate your Continuous Service notwithstanding the grant of the RSU Award; and 

(c) Section 8 of the Plan regarding the tax consequences of your RSU Award. 

Your RSU Award is further subject to all interpretations, amendments, rules and regulations, which may from time to time be promulgated and adopted pursuant
to the Plan. In the event of any conflict between the Agreement and the provisions of the Plan, the provisions of the Plan shall control. 

2. GRANT OF THE RSU AWARD. This RSU Award represents your right to be
issued on a future date the number of shares of the Company’s Common Stock that is equal to the number of restricted stock units indicated in the Grant Notice as modified to reflect any Capitalization Adjustment and subject to your satisfaction
of the vesting conditions set forth therein (the “Restricted Stock Units”). Any additional Restricted Stock Units that become subject to the RSU Award pursuant to Capitalization Adjustments as set forth in the Plan and the
provisions of Section 3 below, if any, shall be subject, in a manner determined by the Board, to the same forfeiture restrictions, restrictions on transferability, and time and manner of delivery as applicable to the other Restricted Stock
Units covered by your RSU Award. 
 3. NO STOCKHOLDER RIGHTS. Unless and
until such time as shares of Common Stock are issued in settlement of vested RSUs, you will have no ownership of the shares allocated to the RSUs and will have no right to vote such shares. You shall receive no benefit or adjustment to this RSU
Award with respect to any cash dividend, stock dividend or other distribution that does not result from a Capitalization Adjustment; provided, however, that this sentence will not apply with respect to any shares of Common Stock that are delivered
to you in connection with your RSU Award after such shares have been delivered to you. 
 4. WITHHOLDING
OBLIGATION. 
 (a) You acknowledge that, regardless of any action taken by the Company, or if different, the
Affiliate employing or engaging you (the “Employer”), the ultimate liability for all income tax (including U.S. federal, state, and local taxes and/or non-U.S. taxes), social insurance,
payroll tax, fringe benefits tax, payment on account or other tax-related items related to your participation in the Plan and legally applicable to you (the
“Tax-Related Items”) 

 
is and remains your responsibility and may exceed the amount, if any, actually withheld by the Company or the Employer. You further acknowledge that the Company and/or the Employer (i) make
no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of the RSU Award, including, but not limited to, the grant of the RSU Award, the vesting of the
RSU Award, the issuance of shares in settlement of vesting of the RSU Award, the subsequent sale of any shares of Common Stock acquired pursuant to the RSU Award and the receipt of any dividends or dividend equivalent; and (ii) do not commit to
and are under no obligation to reduce or eliminate your liability for Tax-Related Items. Further, if you become subject to taxation in more than one country, you acknowledge that the Company and/or the
Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one country. 

(b) On or before the time you receive a distribution of the shares underlying your Restricted Stock Units, and at any other time as
reasonably requested by the Company in accordance with applicable law, you agree to make adequate provision for any sums required to satisfy the withholding obligations of the Company, the Employer or any Affiliate in connection with any Tax-Related Items that arise in connection with the RSU Award (the “Withholding Taxes”). The Company shall arrange a mandatory sale (on your behalf pursuant to your authorization under
this section and without further consent) of the shares of Common Stock issued in settlement upon the vesting of your Restricted Stock Units in an amount necessary to satisfy the Withholding Taxes and shall satisfy the Withholding Taxes by
withholding from the proceeds of such sale (the “Mandatory Sell to Cover”). You hereby acknowledge and agree that the Company shall have the authority to administer the Mandatory Sell to Cover arrangement in its sole
discretion with a registered broker-dealer that is a member of the Financial Industry Regulatory Authority as the Company may select as the agent (the “Agent”) who will sell on the open market at the then prevailing market
price(s), as soon as practicable on or after each date on which your Restricted Stock Units vest and the shares underlying such Restricted Stock Units are distributed, the number (rounded up to the next whole number) of the shares of Common Stock to
be delivered to you in connection with the vesting and settlement of the Restricted Stock Units sufficient to generate proceeds to cover (i) the Withholding Taxes that you are required to pay pursuant to the Plan and this Agreement as a result
of the vesting and settlement of the Restricted Stock Units and (ii) all applicable fees and commissions due to, or required to be collected by, the Agent with respect thereto any remaining funds shall be remitted to you. 

(c) If, for any reason, such Mandatory Sell to Cover does not result in sufficient proceeds to satisfy the Withholding Taxes, or if such
Mandatory Sell to Cover is not permitted by applicable law, the Company or an Affiliate may, in its sole discretion, satisfy all or any portion of the Withholding Taxes relating to the RSU Award by any of the following means or by a combination of
such means: (i) withholding from any compensation otherwise payable to you by the Company or the Employer; (ii) causing you to tender a cash payment (which may be in the form of a check, electronic wire transfer or other method permitted
by the Company); or (iii) withholding shares of Common Stock from the shares of Common Stock issued or otherwise issuable to you in connection with your Restricted Stock Units with a fair market value (measured as of the date shares of Common
Stock are issued to you) equal to the amount of such Withholding Taxes; provided, however, that shares of Common Stock shall not be withheld with a value exceeding the maximum amount of tax required to be withheld by applicable law (or such lesser
amount as may be necessary to avoid classification of the RSU Award as a liability for financial accounting purposes); and to the extent necessary to qualify for an exemption from application of Section 16(b) of the Exchange Act, if applicable,
such share withholding procedure will be subject to the express prior approval of the Board or Compensation Committee of the Board. 

(d) Unless the tax withholding obligations of the Company and/or any Affiliate with respect to the
Tax-Related Items are satisfied, the Company shall have no obligation to deliver to you any Common Stock. 

(e) In the event the Company’s obligation to withhold arises prior to the delivery to you of Common Stock or it is determined after
the delivery of Common Stock to you that the amount of the Tax-Related Items was greater than the amount withheld by the Company or your Employer, you agree to indemnify and hold the Company and your Employer
harmless from any failure by the Company or your Employer to withhold the proper amount. 
 (f) You acknowledge and agree that, as a
result of your authorization under this section and without further consent, the Company will have the authority to administer the Mandatory Sell to Cover pursuant to the terms of the RSU Award. 

 (g) The Company may withhold or account for
Tax-Related Items by considering applicable minimum statutory withholding amounts, or other applicable withholding rates, including maximum applicable rates in your jurisdiction(s). If the maximum rate is
used, any over-withheld amount may be refunded to you in cash by the Company or Employer (with no entitlement to the equivalent in shares of Common Stock), or if not refunded, you may seek a refund from the local tax authorities. You must pay to the
Company and/or the Employer any amount of Tax-Related Items that the Company and/or the Employer may be required to withhold or account for as a result of your participation in the Plan that cannot be
satisfied by the means previously described. 
 5. DATE OF ISSUANCE. 

(a) The issuance of shares in respect of the Restricted Stock Units is intended to comply with Treasury Regulations Section 1.409A-1(b)(4) and will be construed and administered in such a manner. Subject to the satisfaction of the Tax-Related Items set forth in Section 4 of this
Award Agreement, in the event one or more Restricted Stock Units vests, the Company shall issue to you one (1) share of Common Stock for each Restricted Stock Unit that vests on the applicable vesting date(s) (subject to any different
provisions in the Grant Notice). Each issuance date determined by this paragraph is referred to as an “Original Issuance Date.” 

(b) Notwithstanding the foregoing, if (i) selling shares of the Common Stock in the public market on the Original Issuance Date to
satisfy your tax withholding obligation in accordance with Section 4 of this Award Agreement is prohibited for any reason, and (ii) the Company elects not to instead satisfy its tax withholding obligations by withholding shares from your
distribution, then such shares shall not be delivered on such Original Issuance Date and shall instead be delivered to you on the earliest of: (1) the first date that you are not prohibited from selling shares of the Common Stock in the open
market, or (2) such earlier date that the Company elects to satisfy its tax withholding obligation by withholding shares from your distribution; provided, however, that notwithstanding the foregoing, in no event will the shares be delivered to
you any later than: (A) December 31 of the calendar year in which the Original Issuance Date occurs (that is, the last day of your taxable year in which the Original Issuance Date occurs), or (B) if and only if permitted in a manner
that complies with Treasury Regulations Section 1.409A-1(b)(4), no later than the date that is the 15th day of the third calendar month of the applicable year following the year in which the shares of
Common Stock under this Award are no longer subject to a “substantial risk of forfeiture” within the meaning of Treasury Regulations Section 1.409A-1(d). 

(c) In addition and notwithstanding the foregoing, no shares of Common Stock issuable to you under this Section 5 as a result of
the vesting of one or more Restricted Stock Units will be delivered to you until any filings that may be required pursuant to the Hart-Scott-Rodino (“HSR”) Act in connection with the issuance of such shares have been filed
and any required waiting period under the HSR Act has expired or been terminated (any such filings and/or waiting period required pursuant to HSR, the “HSR Requirements”). If the HSR Requirements apply to the issuance of any
shares of Common Stock issuable to you under this Section 5 upon vesting of one or more Restricted Stock Units, such shares of Common Stock will not be issued on the Original Issuance Date and will instead be issued on the first business day on
or following the date when all such HSR Requirements are satisfied and when you are permitted to sell shares of Common Stock on an established stock exchange or stock market, as determined by the Company in accordance with the Company’s
then-effective policy on trading in Company securities. Notwithstanding the foregoing, the issuance date for any shares of Common Stock delayed under this Section 5(c) shall in no event be later than December 31 of the calendar year in
which the Original Issuance Date occurs (that is, the last day of your taxable year in which the Original Issuance Date occurs), unless a later issuance date is permitted without incurring adverse tax consequences under Section 409A of the Code
or other applicable law. 
 (d) The form of delivery (e.g., a stock certificate or electronic entry evidencing such shares) shall be
determined by the Company. 
 6. TRANSFERABILITY. Except as otherwise provided in the Plan, your RSU Award is
not transferable, except by will or by the applicable laws of descent and distribution. 

 7. CORPORATE TRANSACTION. Your RSU Award is
subject to the terms of any agreement governing a Corporate Transaction involving the Company, including, without limitation, a provision for the appointment of a stockholder representative that is authorized to act on your behalf with respect to
any escrow, indemnities and any contingent consideration. 
 8. NO LIABILITY FOR
TAXES. As a condition to accepting the RSU Award, you hereby (a) agree to not make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates related to tax liabilities arising
from the RSU Award or other Company compensation and (b) acknowledge that you were advised to consult with your own personal tax, financial and other legal advisors regarding the tax consequences of the RSU Award and have either done so or
knowingly and voluntarily declined to do so. 
 9. SEVERABILITY. If any part of this Award
Agreement or the Plan is declared by any court or governmental authority to be unlawful or invalid, such unlawfulness or invalidity will not invalidate any portion of this Award Agreement or the Plan not declared to be unlawful or invalid. Any
Section of this Award Agreement (or part of such a Section) so declared to be unlawful or invalid will, if possible, be construed in a manner which will give effect to the terms of such Section or part of a Section to the fullest extent possible
while remaining lawful and valid. 
 10. OTHER DOCUMENTS. You hereby acknowledge receipt of
or the right to receive a document providing the information required by Rule 428(b)(1) promulgated under the Securities Act, which includes the Prospectus. In addition, you acknowledge receipt of the Company’s Trading Policy. 

11. QUESTIONS. If you have questions regarding these or any other terms and conditions applicable to your RSU
Award, including a summary of the applicable federal income tax consequences please see the Prospectus. 

 Attachment II 

2021 EQUITY INCENTIVE PLAN

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