GUARDANT HEALTH, INC. INDENTURE Dated as of , 20 WILMINGTON TRUST, NATIONAL ASSOCIATION as Trustee

TABLE OF CONTENTS Page ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE ..................................1 Section 1.1. Definitions....................................................................................................1 Section 1.2. Other Definitions. ........................................................................................4 Section 1.3. Incorporation by Reference of Trust Indenture Act. ....................................4 Section 1.4. Rules of Construction. .................................................................................5 ARTICLE II. THE SECURITIES....................................................................................................5 Section 2.1. Issuable in Series..........................................................................................5 Section 2.2. Establishment of Terms of Series of Securities. ..........................................5 Section 2.3. Execution and Authentication. .....................................................................8 Section 2.4. Registrar and Paying Agent. ........................................................................9 Section 2.5. Paying Agent to Hold Money in Trust. ........................................................9 Section 2.6. Securityholder Lists. ..................................................................................10 Section 2.7. Transfer and Exchange. .............................................................................10 Section 2.8. Mutilated, Destroyed, Lost and Stolen Securities. .....................................10 Section 2.9. Outstanding Securities. ..............................................................................11 Section 2.10. Treasury Securities.....................................................................................12 Section 2.11. Temporary Securities. ................................................................................12 Section 2.12. Cancellation. ..............................................................................................12 Section 2.13. Defaulted Interest. ......................................................................................12 Section 2.14. Global Securities. .......................................................................................13 Section 2.15. CUSIP Numbers.........................................................................................14 ARTICLE III. REDEMPTION ......................................................................................................14 Section 3.1. Notice to Trustee. .......................................................................................14 Section 3.2. Selection of Securities to be Redeemed. ....................................................15 Section 3.3. Notice of Redemption. ...............................................................................15 Section 3.4. Effect of Notice of Redemption. ................................................................16 Section 3.5. Deposit of Redemption Price. ....................................................................16 Section 3.6. Securities Redeemed in Part. .....................................................................16 ARTICLE IV. COVENANTS .......................................................................................................16 Section 4.1. Payment of Principal and Interest. .............................................................16 Section 4.2. SEC Reports. ..............................................................................................17 Section 4.3. Compliance Certificate. .............................................................................17 Section 4.4. Stay, Extension and Usury Laws. ..............................................................17 ARTICLE V. SUCCESSORS ........................................................................................................18 Section 5.1. When Company May Merge, Etc. .............................................................18 Section 5.2. Successor Corporation Substituted. ...........................................................18 ARTICLE VI. DEFAULTS AND REMEDIES ............................................................................18 Section 6.1. Events of Default. ......................................................................................18 i

Section 6.2. Acceleration of Maturity; Rescission and Annulment. ..............................20 Section 6.3. Collection of Indebtedness and Suits for Enforcement by Trustee. ...........20 Section 6.4. Trustee May File Proofs of Claim. ............................................................21 Section 6.5. Trustee May Enforce Claims Without Possession of Securities. ...............22 Section 6.6. Application of Money Collected. ...............................................................22 Section 6.7. Limitation on Suits. ....................................................................................22 Section 6.8. Unconditional Right of Holders to Receive Principal and Interest. ...........23 Section 6.9. Restoration of Rights and Remedies. .........................................................23 Section 6.10. Rights and Remedies Cumulative. .............................................................23 Section 6.11. Delay or Omission Not Waiver. .................................................................24 Section 6.12. Control by Holders. ....................................................................................24 Section 6.13. Waiver of Past Defaults. ............................................................................24 Section 6.14. Undertaking for Costs. ...............................................................................25 ARTICLE VII. TRUSTEE .............................................................................................................25 Section 7.1. Duties of Trustee. .......................................................................................25 Section 7.2. Rights of Trustee. .......................................................................................26 Section 7.3. Individual Rights of Trustee. .....................................................................27 Section 7.4. Trustee’s Disclaimer. .................................................................................27 Section 7.5. Notice of Defaults. .....................................................................................28 Section 7.6. Reports by Trustee to Holders. ..................................................................28 Section 7.7. Compensation and Indemnity. ...................................................................28 Section 7.8. Replacement of Trustee. ............................................................................29 Section 7.9. Successor Trustee by Merger, Etc. ............................................................30 Section 7.10. Eligibility; Disqualification. ......................................................................30 Section 7.11. Preferential Collection of Claims Against Company. ................................30 ARTICLE VIII. SATISFACTION AND DISCHARGE; DEFEASANCE ...................................30 Section 8.1. Satisfaction and Discharge of Indenture. ...................................................30 Section 8.2. Application of Trust Funds; Indemnification. ...........................................31 Section 8.3. Legal Defeasance of Securities of any Series. ...........................................32 Section 8.4. Covenant Defeasance. ................................................................................33 Section 8.5. Repayment to Company. ............................................................................35 Section 8.6. Reinstatement. ............................................................................................35 ARTICLE IX. AMENDMENTS AND WAIVERS ......................................................................35 Section 9.1. Without Consent of Holders. .....................................................................35 Section 9.2. With Consent of Holders. ..........................................................................36 Section 9.3. Limitations. ................................................................................................36 Section 9.4. Compliance with Trust Indenture Act. .......................................................37 Section 9.5. Revocation and Effect of Consents. ...........................................................37 Section 9.6. Notation on or Exchange of Securities. .....................................................38 Section 9.7. Trustee Protected. ......................................................................................38 ARTICLE X. MISCELLANEOUS ...............................................................................................38 Section 10.1. Trust Indenture Act Controls. ....................................................................38 Section 10.2. Notices. ......................................................................................................38 ii

GUARDANT HEALTH, INC. Reconciliation and tie between Trust Indenture Act of 1939 and Indenture, dated as of , 20 § 310(a)(1) ................................................................................................ 7.10 (a)(2) ................................................................................................ 7.10 (a)(3) ................................................................................................ Not Applicable (a)(4) ................................................................................................ Not Applicable (a)(5) ................................................................................................ 7.10 (b) ................................................................................................ 7.10 § 311(a) ................................................................................................ 7.11 (b) ................................................................................................ 7.11 (c) ................................................................................................ Not Applicable § 312(a) ................................................................................................ 2.6 (b) ................................................................................................ 10.3 (c) ................................................................................................ 10.3 § 313(a) ................................................................................................ 7.6 (b)(1) ................................................................................................ 7.6 (b)(2) ................................................................................................ 7.6 (c)(1) ................................................................................................ 7.6 (d) ................................................................................................ 7.6 § 314(a) ................................................................................................ 4.2, 10.5 (b) ................................................................................................ Not Applicable (c)(1) ................................................................................................ 10.4 (c)(2) ................................................................................................ 10.4 (c)(3) ................................................................................................ Not Applicable (d) ................................................................................................ Not Applicable (e) ................................................................................................ 10.5 (f) ................................................................................................ Not Applicable § 315(a) ................................................................................................ 7.1 (b) ................................................................................................ 7.5 (c) ................................................................................................ 7.1 (d) ................................................................................................ 7.1 (e) ................................................................................................ 6.14 § 316(a) ................................................................................................ 2.10 (a)(1)(A) ................................................................................................ 6.12 (a)(1)(B) ................................................................................................ 6.13 (b) ................................................................................................ 6.8 § 317(a)(1) ................................................................................................ 6.3 (a)(2) ................................................................................................ 6.4 (b) ................................................................................................ 2.5 § 318(a) ................................................................................................ 10.1 Note: This reconciliation and tie shall not, for any purpose, be deemed to be part of the Indenture.

Indenture dated as of , 20 between Guardant Health, Inc., a company incorporated under the laws of the State of Delaware (“Company”), and Wilmington Trust, National Association (“Trustee”). Each party agrees as follows for the benefit of the other party and for the equal and ratable benefit of the Holders of the Securities issued under this Indenture. ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE Section 1.1. Definitions. “Affiliate” of any specified person means any other person directly or indirectly controlling or controlled by or under common control with such specified person. For the purposes of this definition, “control” (including, with correlative meanings, the terms “controlled by” and “under common control with”), as used with respect to any person, shall mean the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of such person, whether through the ownership of voting securities or by agreement or otherwise. “Agent” means any Registrar, Paying Agent or Notice Agent. “Board of Directors” means the board of directors of the Company or any duly authorized committee thereof. “Board Resolution” means a copy of a resolution certified by the Secretary or an Assistant Secretary of the Company to have been adopted by the Board of Directors or pursuant to authorization by the Board of Directors and to be in full force and effect on the date of the certificate and delivered to the Trustee. “Business Day” means any day except a Saturday, Sunday or a legal holiday in The City of New York, New York (or in connection with any payment, the place of payment) on which banking institutions are authorized or required by law, regulation or executive order to close. “Capital Stock” means any and all shares, interests, participations, rights or other equivalents (however designated) of corporate stock. “Company” means the party named as such above until a successor replaces it and thereafter means the successor. “Company Order” means a written order signed in the name of the Company by an Officer. “Corporate Trust Office” means the office of the Trustee at which at any particular time its corporate trust business related to this Indenture shall be principally administered. “Default” means any event which is, or after notice or passage of time or both would be, an Event of Default.

“Depositary” means, with respect to the Securities of any Series issuable or issued in whole or in part in the form of one or more Global Securities, the person designated as Depositary for such Series by the Company, which Depositary shall be a clearing agency registered under the Exchange Act; and if at any time there is more than one such person, “Depositary” as used with respect to the Securities of any Series shall mean the Depositary with respect to the Securities of such Series. “Discount Security” means any Security that provides for an amount less than the stated principal amount thereof to be due and payable upon declaration of acceleration of the maturity thereof pursuant to Section 6.2. “Dollars” and “$” means the currency of The United States of America. “Exchange Act” means the Securities Exchange Act of 1934, as amended. “Foreign Currency” means any currency or currency unit issued by a government other than the government of The United States of America. “Foreign Government Obligations” means, with respect to Securities of any Series that are denominated in a Foreign Currency, direct obligations of, or obligations guaranteed by, the government that issued or caused to be issued such currency for the payment of which obligations its full faith and credit is pledged and which are not callable or redeemable at the option of the issuer thereof. “GAAP” means accounting principles generally accepted in the United States of America set forth in the opinions and pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board or in such other statements by such other entity as have been approved by a significant segment of the accounting profession, which are in effect as of the date of determination. “Global Security” or “Global Securities” means a Security or Securities, as the case may be, in the form established pursuant to Section 2.2 evidencing all or part of a Series of Securities, issued to the Depositary for such Series or its nominee, and registered in the name of such Depositary or nominee. “Holder” or “Securityholder” means a person in whose name a Security is registered. “Indenture” means this Indenture as amended or supplemented from time to time and shall include the form and terms of particular Series of Securities established as contemplated hereunder. “interest” with respect to any Discount Security which by its terms bears interest only after Maturity, means interest payable after Maturity. 2

“Maturity,” when used with respect to any Security, means the date on which the principal of such Security becomes due and payable as therein or herein provided, whether at the Stated Maturity or by declaration of acceleration, call for redemption or otherwise. “Officer” means the Chief Executive Officer, President, the Chief Financial Officer, the Treasurer or any Assistant Treasurer, the Secretary or any Assistant Secretary, and any Vice President of the Company. “Officer’s Certificate” means a certificate signed by any Officer. “Opinion of Counsel” means a written opinion of legal counsel who is acceptable to the Trustee. The counsel may be an employee of or counsel to the Company. The opinion may contain customary limitations, conditions and exceptions. “person” means any individual, corporation, partnership, joint venture, association, limited liability company, joint-stock company, trust, unincorporated organization or government or any agency or political subdivision thereof. “principal” of a Security means the principal of the Security plus, when appropriate, the premium, if any, on, the Security. “Responsible Officer” means any officer of the Trustee in its Corporate Trust Office having responsibility for administration of this Indenture and also means, with respect to a particular corporate trust matter, any other officer to whom any corporate trust matter is referred because of his or her knowledge of and familiarity with a particular subject. “SEC” means the Securities and Exchange Commission. “Securities” means the debentures, notes or other debt instruments of the Company of any Series authenticated and delivered under this Indenture. “Series” or “Series of Securities” means each series of debentures, notes or other debt instruments of the Company created pursuant to Sections 2.1 and 2.2 hereof. “Stated Maturity” when used with respect to any Security, means the date specified in such Security as the fixed date on which the principal of such Security or interest is due and payable. “Subsidiary” of any specified person means any corporation, association or other business entity of which more than 50% of the total voting power of shares of Capital Stock entitled (without regard to the occurrence of any contingency) to vote in the election of directors, managers or trustees thereof is at the time owned or controlled, directly or indirectly, by such person or one or more of the other Subsidiaries of that person or a combination thereof. “TIA” means the Trust Indenture Act of 1939 (15 U.S. Code §§ 77aaa-77bbbb) as in effect on the date of this Indenture; provided, however, that in the event the Trust Indenture Act of 1939 is amended after such date, “TIA” means, to the extent required by any such amendment, the Trust Indenture Act as so amended. 3

“Trustee” means the person named as the “Trustee” in the first paragraph of this instrument until a successor Trustee shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Trustee” shall mean or include each person who is then a Trustee hereunder, and if at any time there is more than one such person, “Trustee” as used with respect to the Securities of any Series shall mean the Trustee with respect to Securities of that Series. “U.S. Government Obligations” means securities which are direct obligations of, or guaranteed by, The United States of America for the payment of which its full faith and credit is pledged and which are not callable or redeemable at the option of the issuer thereof, and shall also include a depositary receipt issued by a bank or trust company as custodian with respect to any such U.S. Government Obligation or a specific payment of interest on or principal of any such U.S. Government Obligation held by such custodian for the account of the holder of a depository receipt, provided that (except as required by law) such custodian is not authorized to make any deduction from the amount payable to the holder of such depositary receipt from any amount received by the custodian in respect of the U.S. Government Obligation evidenced by such depositary receipt. Section 1.2. Other Definitions. TERM DEFINED IN SECTION “Bankruptcy Law” 6.1 “Custodian” 6.1 “Event of Default” 6.1 “Judgment Currency” 10.16 “Legal Holiday” 10.7 “mandatory sinking fund payment” 11.1 “New York Banking Day” 10.16 “Notice Agent” 2.4 “optional sinking fund payment” 11.1 “Paying Agent” 2.4 “Registrar” 2.4 “Required Currency” 10.16 “Specified Courts” 10.10 “successor person” 5.1 Section 1.3. Incorporation by Reference of Trust Indenture Act. Whenever this Indenture refers to a provision of the TIA, the provision is incorporated by reference in and made a part of this Indenture. The following TIA terms used in this Indenture have the following meanings: “Commission” means the SEC. “indenture securities” means the Securities. “indenture security holder” means a Securityholder. 4

Securities within the Series or as to the Series generally in the case of Subsections 2.2.2 through 2.2.23) by or pursuant to a Board Resolution, and set forth or determined in the manner provided in a Board Resolution, supplemental indenture hereto or Officer’s Certificate: 2.2.1. the title (which shall distinguish the Securities of that particular Series from the Securities of any other Series) and ranking (including the terms of any subordination provisions) of the Series; 2.2.2. the price or prices (expressed as a percentage of the principal amount thereof) at which the Securities of the Series will be issued; 2.2.3. any limit upon the aggregate principal amount of the Securities of the Series which may be authenticated and delivered under this Indenture (except for Securities authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other Securities of the Series pursuant to Section 2.7, 2.8, 2.11, 3.6 or 9.6); 2.2.4. the date or dates on which the principal of the Securities of the Series is payable; 2.2.5. the rate or rates (which may be fixed or variable) per annum or, if applicable, the method used to determine such rate or rates (including, but not limited to, any commodity, commodity index, stock exchange index or financial index) at which the Securities of the Series shall bear interest, if any, the date or dates from which such interest, if any, shall accrue, the date or dates on which such interest, if any, shall commence and be payable and any regular record date for the interest payable on any interest payment date; 2.2.6. the place or places where the principal of and interest, if any, on the Securities of the Series shall be payable, where the Securities of such Series may be surrendered for registration of transfer or exchange and where notices and demands to or upon the Company in respect of the Securities of such Series and this Indenture may be delivered, and the method of such payment, if by wire transfer, mail or other means; 2.2.7. if applicable, the period or periods within which, the price or prices at which and the terms and conditions upon which the Securities of the Series may be redeemed, in whole or in part, at the option of the Company; 2.2.8. the obligation, if any, of the Company to redeem or purchase the Securities of the Series pursuant to any sinking fund or analogous provisions or at the option of a Holder thereof and the period or periods within which, the price or prices at which and the terms and conditions upon which Securities of the Series shall be redeemed or purchased, in whole or in part, pursuant to such obligation; 2.2.9. the dates, if any, on which and the price or prices at which the Securities of the Series will be repurchased by the Company at the option of the Holders thereof and other detailed terms and provisions of such repurchase obligations; 2.2.10. if other than denominations of $1,000 and any integral multiple thereof, the denominations in which the Securities of the Series shall be issuable; 6

2.2.11. the forms of the Securities of the Series and whether the Securities will be issuable as Global Securities; 2.2.12. if other than the principal amount thereof, the portion of the principal amount of the Securities of the Series that shall be payable upon declaration of acceleration of the maturity thereof pursuant to Section 6.2; 2.2.13. the currency of denomination of the Securities of the Series, which may be Dollars or any Foreign Currency, and if such currency of denomination is a composite currency, the agency or organization, if any, responsible for overseeing such composite currency; 2.2.14. the designation of the currency, currencies or currency units in which payment of the principal of and interest, if any, on the Securities of the Series will be made; 2.2.15. if payments of principal of or interest, if any, on the Securities of the Series are to be made in one or more currencies or currency units other than that or those in which such Securities are denominated, the manner in which the exchange rate with respect to such payments will be determined; 2.2.16. the manner in which the amounts of payment of principal of or interest, if any, on the Securities of the Series will be determined, if such amounts may be determined by reference to an index based on a currency or currencies or by reference to a commodity, commodity index, stock exchange index or financial index; 2.2.17. the provisions, if any, relating to any security provided for the Securities of the Series; 2.2.18. any addition to, deletion of or change in the Events of Default which applies to any Securities of the Series and any change in the right of the Trustee or the requisite Holders of such Securities to declare the principal amount thereof due and payable pursuant to Section 6.2; 2.2.19. any addition to, deletion of or change in the covenants set forth in Articles IV or V which applies to Securities of the Series; 2.2.20. any Depositaries, interest rate calculation agents, exchange rate calculation agents or other agents with respect to Securities of such Series if other than those appointed herein; 2.2.21. the provisions, if any, relating to conversion or exchange of any Securities of such Series, including if applicable, the conversion or exchange price, the conversion or exchange period, provisions as to whether conversion or exchange will be mandatory, at the option of the Holders thereof or at the option of the Company, the events requiring an adjustment of the conversion price or exchange price and provisions affecting conversion or exchange if such Series of Securities are redeemed; 2.2.22. any other terms of the Series (which may supplement, modify or delete any provision of this Indenture insofar as it applies to such Series), including any terms that may 7

Section 2.14. Global Securities. 2.14.1. Terms of Securities. A Board Resolution, a supplemental indenture hereto or an Officer’s Certificate shall establish whether the Securities of a Series shall be issued in whole or in part in the form of one or more Global Securities and the Depositary for such Global Security or Securities. 2.14.2. Transfer and Exchange. Notwithstanding any provisions to the contrary contained in Section 2.7 of the Indenture and in addition thereto, any Global Security shall be exchangeable pursuant to Section 2.7 of the Indenture for Securities registered in the names of Holders other than the Depositary for such Security or its nominee only if (i) such Depositary notifies the Company that it is unwilling or unable to continue as Depositary for such Global Security or if at any time such Depositary ceases to be a clearing agency registered under the Exchange Act, and, in either case, the Company fails to appoint a successor Depositary registered as a clearing agency under the Exchange Act within 90 days of such event or (ii) the Company executes and delivers to the Trustee an Officer’s Certificate to the effect that such Global Security shall be so exchangeable. Any Global Security that is exchangeable pursuant to the preceding sentence shall be exchangeable for Securities registered in such names as the Depositary shall direct in writing in an aggregate principal amount equal to the principal amount of the Global Security with like tenor and terms. Except as provided in this Section 2.14.2, a Global Security may not be transferred except as a whole by the Depositary with respect to such Global Security to a nominee of such Depositary, by a nominee of such Depositary to such Depositary or another nominee of such Depositary or by the Depositary or any such nominee to a successor Depositary or a nominee of such a successor Depositary. 2.14.3. Legends. Any Global Security issued hereunder shall bear a legend in substantially the following form: “THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF THE DEPOSITARY OR A NOMINEE OF THE DEPOSITARY. THIS SECURITY IS EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITARY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY, BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH A SUCCESSOR DEPOSITARY.” In addition, so long as the Depository Trust Company (“DTC”) is the Depositary, each Global Note registered in the name of DTC or its nominee shall bear a legend in substantially the following form: “UNLESS THIS GLOBAL NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK 13

(f) that interest on Securities of the Series called for redemption ceases to accrue on and after the redemption date unless the Company defaults in the deposit of the redemption price; (g) the CUSIP number, if any; and (h) any other information as may be required by the terms of the particular Series or the Securities of a Series being redeemed. At the Company’s request, the Trustee shall give the notice of redemption in the Company’s name and at its expense, provided, however, that the Company has delivered to the Trustee, at least 10 days (unless a shorter time shall be acceptable to the Trustee) prior to the notice date, an Officer’s Certificate requesting that the Trustee give such notice and setting forth the information to be stated in such notice. Section 3.4. Effect of Notice of Redemption. Once notice of redemption is sent as provided in Section 3.3, Securities of a Series called for redemption become due and payable on the redemption date and at the redemption price. Except as otherwise provided in the supplemental indenture, Board Resolution or Officer’s Certificate for a Series, a notice of redemption may not be conditional. Upon surrender to the Paying Agent, such Securities shall be paid at the redemption price plus accrued interest to the redemption date. Section 3.5. Deposit of Redemption Price. On or before 11:00 a.m., New York City time, on the redemption date, the Company shall deposit with the Paying Agent money sufficient to pay the redemption price of and accrued interest, if any, on all Securities to be redeemed on that date. Section 3.6. Securities Redeemed in Part. Upon surrender of a Security that is redeemed in part, the Trustee shall authenticate for the Holder a new Security of the same Series and the same maturity equal in principal amount to the unredeemed portion of the Security surrendered. ARTICLE IV. COVENANTS Section 4.1. Payment of Principal and Interest. The Company covenants and agrees for the benefit of the Holders of each Series of Securities that it will duly and punctually pay the principal of and interest, if any, on the Securities of that Series in accordance with the terms of such Securities and this Indenture. On or before 11:00 a.m., New York City time, on the applicable payment date, the Company shall deposit with the Paying Agent money sufficient to pay the principal of and interest, if any, on the Securities of each Series in accordance with the terms of such Securities and this Indenture. 16

(a) default in the payment of any interest on any Security of that Series when it becomes due and payable, and continuance of such default for a period of 30 days (unless the entire amount of such payment is deposited by the Company with the Trustee or with a Paying Agent prior to 11:00 a.m., New York City time, on the 30th day of such period); or (b) default in the payment of principal of any Security of that Series at its Maturity; or (c) default in the performance or breach of any covenant or warranty of the Company in this Indenture (other than defaults pursuant to paragraphs (a) or (b) above or pursuant to a covenant or warranty that has been included in this Indenture solely for the benefit of Series of Securities other than that Series), which default continues uncured for a period of 60 days after there has been given, by registered or certified mail, to the Company by the Trustee or to the Company and the Trustee by the Holders of at least 25% in principal amount of the outstanding Securities of that Series a written notice specifying such default or breach and requiring it to be remedied and stating that such notice is a “Notice of Default” hereunder; or (d) the Company pursuant to or within the meaning of any Bankruptcy Law: (i) commences a voluntary case, (ii) consents to the entry of an order for relief against it in an involuntary case, (iii) consents to the appointment of a Custodian of it or for all or substantially all of its property, (iv) makes a general assignment for the benefit of its creditors, or (v) generally is unable to pay its debts as the same become due; or (e) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that: (i) is for relief against the Company in an involuntary case, (ii) appoints a Custodian of the Company or for all or substantially all of its property, or (iii) orders the liquidation of the Company, and the order or decree remains unstayed and in effect for 60 days; or (f) any other Event of Default provided with respect to Securities of that Series, which is specified in a Board Resolution, a supplemental indenture hereto or an Officer’s Certificate, in accordance with Section 2.2.18. 19

may determine, to the persons entitled thereto, of the principal and interest for whose payment such money has been deposited with or received by the Trustee or to make mandatory sinking fund payments or analogous payments as contemplated by Sections 8.1, 8.3 or 8.4. (b) The Company shall pay and shall indemnify the Trustee against any tax, fee or other charge imposed on or assessed against U.S. Government Obligations or Foreign Government Obligations deposited pursuant to Sections 8.1, 8.3 or 8.4 or the interest and principal received in respect of such obligations other than any payable by or on behalf of Holders. (c) The Trustee shall deliver or pay to the Company from time to time upon Company Order any U.S. Government Obligations or Foreign Government Obligations or money held by it as provided in Sections 8.3 or 8.4 which, in the opinion of a nationally recognized firm of independent certified public accountants or investment bank expressed in a written certification thereof delivered to the Trustee, are then in excess of the amount thereof which then would have been required to be deposited for the purpose for which such U.S. Government Obligations or Foreign Government Obligations or money were deposited or received. This provision shall not authorize the sale by the Trustee of any U.S. Government Obligations or Foreign Government Obligations held under this Indenture. Section 8.3. Legal Defeasance of Securities of any Series. Unless this Section 8.3 is otherwise specified, pursuant to Section 2.2, to be inapplicable to Securities of any Series, the Company shall be deemed to have paid and discharged the entire indebtedness on all the outstanding Securities of any Series on the 91st day after the date of the deposit referred to in subparagraph (d) hereof, and the provisions of this Indenture, as it relates to such outstanding Securities of such Series, shall no longer be in effect (and the Trustee, at the expense of the Company, shall, upon receipt of a Company Order, execute instruments acknowledging the same), except as to: (a) the rights of Holders of Securities of such Series to receive, from the trust funds described in subparagraph (d) hereof, (i) payment of the principal of and each installment of principal of and interest on the outstanding Securities of such Series on the Maturity of such principal or installment of principal or interest and (ii) the benefit of any mandatory sinking fund payments applicable to the Securities of such Series on the day on which such payments are due and payable in accordance with the terms of this Indenture and the Securities of such Series; (b) the provisions of Sections 2.4, 2.5, 2.7, 2.8, 7.7, 8.2, 8.3, 8.5 and 8.6; and (c) the rights, powers, trusts and immunities of the Trustee hereunder and the Company’s obligations in connection therewith; provided that, the following conditions shall have been satisfied: 32

Securities of any Series with any term, provision or condition set forth under Sections 4.2, 4.3, 4.4 and 5.1 and, unless otherwise specified therein, any additional covenants specified in a supplemental indenture for such Series of Securities or a Board Resolution or an Officer’s Certificate delivered pursuant to Section 2.2 (and the failure to comply with any such covenants shall not constitute a Default or Event of Default with respect to such Series under Section 6.1) and the occurrence of any event specified in a supplemental indenture for such Series of Securities or a Board Resolution or an Officer’s Certificate delivered pursuant to Section 2.2 and designated as an Event of Default shall not constitute a Default or Event of Default hereunder, with respect to the Securities of such Series, but, except as specified above, the remainder of this Indenture and such Securities will be unaffected thereby; provided that the following conditions shall have been satisfied: (a) with reference to this Section 8.4, the Company has irrevocably deposited or caused to be irrevocably deposited (except as provided in Section 8.2(c)) with the Trustee as trust funds in trust for the purpose of making the following payments specifically pledged as security for, and dedicated solely to, the benefit of the Holders of such Securities (i) in the case of Securities of such Series denominated in Dollars, cash in Dollars and/or U.S. Government Obligations, or (ii) in the case of Securities of such Series denominated in a Foreign Currency (other than a composite currency), money and/or Foreign Government Obligations, which through the payment of interest and principal in respect thereof in accordance with their terms, will provide (and without reinvestment and assuming no tax liability will be imposed on such Trustee), not later than one day before the due date of any payment of money, an amount in cash, sufficient, in the opinion of a nationally recognized firm of independent certified public accountants or investment bank expressed in a written certification thereof delivered to the Trustee, to pay and discharge each installment of principal (including mandatory sinking fund or analogous payments) of and interest on all the Securities of such Series on the dates such installments of principal or interest are due; (b) such deposit will not result in a breach or violation of, or constitute a default under, this Indenture or any other agreement or instrument to which the Company is a party or by which it is bound; (c) no Default or Event of Default with respect to the Securities of such Series shall have occurred and be continuing on the date of such deposit; (d) the Company shall have delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel to the effect that the Holders of the Securities of such Series will not recognize income, gain or loss for Federal income tax purposes as a result of such deposit and covenant defeasance and will be subject to Federal income tax on the same amount and in the same manner and at the same times as would have been the case if such deposit and covenant defeasance had not occurred; (e) The Company shall have delivered to the Trustee an Officer’s Certificate stating the deposit was not made by the Company with the intent of defeating, hindering, delaying or defrauding any other creditors of the Company; and 34

such Persons continue to be Holders after such record date. No such consent shall be valid or effective for more than 120 days after such record date. Section 9.6. Notation on or Exchange of Securities. The Company or the Trustee may place an appropriate notation about an amendment or waiver on any Security of any Series thereafter authenticated. The Company in exchange for Securities of that Series may issue and the Trustee shall authenticate upon receipt of a Company Order in accordance with Section 2.3 new Securities of that Series that reflect the amendment or waiver. Section 9.7. Trustee Protected. In executing, or accepting the additional trusts created by, any supplemental indenture permitted by this Article or the modifications thereby of the trusts created by this Indenture, the Trustee shall be entitled to receive, and (subject to Section 7.1) shall be fully protected in relying upon, an Officer’s Certificate or an Opinion of Counsel or both complying with Section 10.4. The Trustee shall sign all supplemental indentures upon delivery of such an Officer’s Certificate or Opinion of Counsel or both, except that the Trustee need not sign any supplemental indenture that adversely affects its rights, duties, liabilities or immunities under this Indenture. ARTICLE X. MISCELLANEOUS Section 10.1. Trust Indenture Act Controls. If any provision of this Indenture limits, qualifies, or conflicts with another provision which is required or deemed to be included in this Indenture by the TIA, such required or deemed provision shall control. Section 10.2. Notices. Any notice or communication by the Company or the Trustee to the other, or by a Holder to the Company or the Trustee, is duly given if in writing and delivered in person or mailed by first-class mail (registered or certified, return receipt requested), facsimile transmission, email or overnight air courier guaranteeing next day delivery, to the others’ address: if to the Company: Guardant Health, Inc. 000 Xxxxxxxxx Xx. Xxxxxxx Xxxx, Xxxxxxxxxx 00000 Attention: Chief Financial Officer; General Counsel Telephone: (000) 000-0000 with a copy to: 38

Xxxxxx & Xxxxxxx LLP 000 Xxxx Xxxxxx Xxxxx, 00xx Xxxxx Xxxxx Xxxx, Xxxxxxxxxx 00000 Attention: B. Xxxxxx Xxxxxxx; Xxxx Xxxxxxx Telephone: (000) 000-0000 if to the Trustee: Wilmington Trust, National Association Xxxxxx Square North 0000 Xxxxx Xxxxxx Xxxxxx Xxxxxxxxxx, Xxxxxxxx 00000 Attention: Xxx Xxxxxx Telephone: (000) 000-0000 with a copy to: Xxxxxx & Bird LLP 000 Xxxxx Xxxxx Xxxxxx, Xxxxx 0000 Xxxxxxxxx, Xxxxx Xxxxxxxx 00000 Attention: Xxxxx Xxxxxxx Telephone: (000)-000-0000 The Company or the Trustee by notice to the other may designate additional or different addresses for subsequent notices or communications. Any notice or communication to a Securityholder shall be sent electronically or by first-class mail to his, her or its address shown on the register kept by the Registrar, in accordance with the procedures of the Depositary. Failure to send a notice or communication to a Securityholder of any Series or any defect in it shall not affect its sufficiency with respect to other Securityholders of that or any other Series. If a notice or communication is sent or published in the manner provided above, within the time prescribed, it is duly given, whether or not the Securityholder receives it. If the Company sends a notice or communication to Securityholders, it shall send a copy to the Trustee and each Agent at the same time. Notwithstanding any other provision of this Indenture or any Security, where this Indenture or any Security provides for notice of any event (including any notice of redemption) to a Holder of a Global Security (whether by mail or otherwise), such notice shall be sufficiently given to the Depositary for such Security (or its designee) pursuant to the customary procedures of such Depositary. 39

Section 10.7. Legal Holidays. A “Legal Holiday” is any day that is not a Business Day. If a payment date is a Legal Holiday at a place of payment, payment may be made at that place on the next succeeding day that is not a Legal Holiday, and no interest shall accrue for the intervening period. Section 10.8. No Recourse Against Others. A director, officer, employee or stockholder (past or present), as such, of the Company shall not have any liability for any obligations of the Company under the Securities or the Indenture or for any claim based on, in respect of or by reason of such obligations or their creation. Each Securityholder by accepting a Security waives and releases all such liability. The waiver and release are part of the consideration for the issue of the Securities. Section 10.9. Counterparts. This Indenture may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement. The exchange of copies of this Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Indenture as to the parties hereto and may be used in lieu of the original Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF shall be deemed to be their original signatures for all purposes. Section 10.10. Governing Law; Waiver of Jury Trial; Consent to Jurisdiction. THIS INDENTURE AND THE SECURITIES, INCLUDING ANY CLAIM OR CONTROVERSY ARISING OUT OF OR RELATING TO THE INDENTURE OR THE SECURITIES, SHALL BE GOVERNED BY THE LAWS OF THE STATE OF NEW YORK. THE COMPANY, THE TRUSTEE AND THE HOLDERS (BY THEIR ACCEPTANCE OF THE SECURITIES) EACH HEREBY IRREVOCABLY WAIVE, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS INDENTURE, THE NOTES OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY. Any legal suit, action or proceeding arising out of or based upon this Indenture or the transactions contemplated hereby may be instituted in the federal courts of the United States of America located in the City of New York or the courts of the State of New York in each case located in the City of New York (collectively, the “Specified Courts”), and each party irrevocably submits to the non exclusive jurisdiction of such courts in any such suit, action or proceeding. Service of any process, summons, notice or document by mail (to the extent allowed under any applicable statute or rule of court) to such party’s address set forth above shall be effective service of process for any suit, action or other proceeding brought in any such court. The Company, the Trustee and the Holders (by their acceptance of the Securities) each hereby irrevocably and unconditionally waive any objection to the laying of venue of any suit, action or other proceeding 41

IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be duly executed as of the day and year first above written. GUARDANT HEALTH, INC. By: Name: Its: WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee By: Name: Its: