Sec Form 4 Filing - SVF Bluebird (Cayman) Ltd @ Guardant Health, Inc. - 2019-09-11

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person SVF Bluebird (Cayman) Ltd 2. Issuer Name and Ticker or Trading Symbol Guardant Health, Inc. [ GH] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O WALKERS CORP LTD CAYMAN CORP CENTRE, 27 HOSPITAL ROAD GEORGE TOWN 3. Date of Earliest Transaction (MM/DD/YY) 09/11/2019 (Street) GRAND CAYMAN, E9KY1-9008 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 09/11/2019 S 4,900,000 D $ 77 22,950,460 D ( 1 ) ( 2 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other SVF Bluebird (Cayman) Ltd C/O WALKERS CORP LTD CAYMAN CORP CENTRE 27 HOSPITAL ROAD GEORGE TOWN GRAND CAYMAN, E9KY1-9008 X SOFTBANK VISION FUND (AIV M1) L.P. 251 LITTLE FALLS DRIVE WILMINGTON, DE19808 X SB INVESTMENT ADVISERS (UK) LTD 69 GROSVENOR STREET LONDON, X0W1K 3JW X SVF Enterprise (Cayman) Ltd C/O WALKERS CORP LTD CAYMAN CORP CENTRE 27 HOSPITAL ROAD GEORGE TOWN GRAND CAYMAN, E9KY1-9008 X SVF Endurance (Cayman) Ltd C/O WALKERS CORP LTD CAYMAN CORP CENTRE 27 HOSPITAL ROAD GEORGE TOWN GRAND CAYMAN, E9KY1-9008 X Signatures /s/ Karen Ellerbe, Director - SVF Bluebird (Cayman) Limited 09/13/2019 Signature of Reporting Person Date /s/ Brian Wheeler, General Counsel of SB Investment Advisers (UK) Limited, Manager of SoftBank Vision Fund (AIV M1) L.P. 09/13/2019 Signature of Reporting Person Date /s/ Brian Wheeler, General Counsel of SB Investment Advisers (UK) Limited 09/13/2019 Signature of Reporting Person Date /s/ Karen Ellerbe, Director - SVF Enterprise (Cayman) Limited 09/13/2019 Signature of Reporting Person Date /s/ Karen Ellerbe, Director - SVF Endurance (Cayman) Limited 09/13/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )SVF Bluebird (Cayman) Limited is a wholly-owned subsidiary of SVF Enterprise (Cayman) Limited. SVF Enterprise (Cayman) Limited is a wholly-owned subsidiary of SVF Endurance (Cayman) Limited. SVF Endurance (Cayman) Limited is a wholly owned subsidiary of SoftBank Vision Fund (AIV M1) L.P. SB Investment Advisers (UK) Limited has been appointed as alternative investment fund manager, or AIFM, of SoftBank Vision Fund (AIV M1) L.P., and is exclusively responsible for managing SoftBank Vision Fund (AIV M1) L.P. in accordance with the Alternative Investment Fund Managers Directive and is authorized and regulated by the UK Financial Conduct Authority accordingly.(continued to Fn. 2) ( 2 )(Continued from Fn. 1) As AIFM of SoftBank Vision Fund (AIV M1) L.P., SB Investment Advisers (UK) Limited is exclusively responsible for making all decisions related to the acquisition, structuring, financing and disposal of SoftBank Vision Fund (AIV M1) L.P.'s Investments. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission that any reporting person is the beneficial owner of such shares for purposes of the Securities Exchange Act of 1934 or for any other purpose.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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