Sec Form 4 Filing - Lares Adriel G @ Fastly, Inc. - 2021-07-15

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 Lares Adriel G 2. Issuer Name and Ticker or Trading Symbol Fastly, Inc. [ FSLY] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) C/O FASTLY, INC., 475 BRANNAN STREET, SUITE 300 3. Date of Earliest Transaction (MM/DD/YY) 07/15/2021 (Street) SAN FRANCISCO, CA94107 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ 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 Class A Common Stock 07/15/2021 M 5,000 A $ 0 184,471 D Class A Common Stock 07/15/2021 S( 1 ) 5,000 D $ 50 179,471 D

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 Employee Stock Option (Right to Buy) $ 2.36 07/12/2021 J( 2 )( 3 ) 570,248 ( 4 ) 07/11/2026 Class B Common Stock 570,248 $ 0 0 D Employee Stock Option (Right to Buy) $ 2.36 07/12/2021 J( 2 )( 3 ) 570,248 ( 4 ) 07/11/2026 Class A Common Stock 570,248 $ 0 570,248 D Employee Stock Option (Right to Buy) $ 2.36 07/15/2021 M 5,000 ( 4 ) 07/11/2026 Class A Common Stock 5,000 $ 0 565,248 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Lares Adriel G C/O FASTLY, INC. 475 BRANNAN STREET, SUITE 300 SAN FRANCISCO, CA94107 Chief Financial Officer Signatures /s/ Seth Gottlieb, Attorney-in-Fact 07/19/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. ( 2 )On October 12, 2020, the Issuer's outstanding shares of Class B Common Stock represented less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock. As a result, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation, as amended on July 12, 2021. ( 3 )In connection with the automatic conversion described in footnote (2), outstanding Class B Common Stock options that were issued under the Issuer's 2011 Equity Incentive Plan remain unchanged, except that the underlying shares are now Class A Common Stock. ( 4 )The stock option vested and became exercisable as to 25% of the shares subject to the option on May 16, 2017, and thereafter vested as to 1/48th of the shares in equal monthly installments, until such time as the option is 100% vested, subject to the continuing employment of the reporting person on each vesting date.

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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