{"transactions":[{"id":1723499,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-12-04T22:52:23.000Z","date":"2023-11-30","kind":"sale","planned":false,"acquired":false,"shares":575,"price":18.21,"value":10470.75,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.21 to $18.33. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote 2 to this Form 4."}],"balance_after":264501,"source":{"system":"sec-edgar","filing":"0001517413-23-000361","document":"wk-form4_1701730333.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000361/wk-form4_1701730333.xml","form_type":"4"}},{"id":1730822,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-11-22T22:21:48.000Z","date":"2023-11-20","kind":"grant","planned":true,"acquired":true,"shares":297,"price":11.44,"value":3397.68,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Shares acquired under the Fastly, Inc. 2019 Employee Stock Purchase Plan in a transaction exempt under Rule 16b-3(c)."}],"balance_after":265076,"source":{"system":"sec-edgar","filing":"0001517413-23-000346","document":"wk-form4_1700691696.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000346/wk-form4_1700691696.xml","form_type":"4"}},{"id":1730821,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-11-22T22:21:48.000Z","date":"2023-11-20","kind":"sale","planned":true,"acquired":false,"shares":2802,"price":18.85,"value":52817.7,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.78 to $18.92, inclusive."}],"balance_after":264779,"source":{"system":"sec-edgar","filing":"0001517413-23-000346","document":"wk-form4_1700691696.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000346/wk-form4_1700691696.xml","form_type":"4"}},{"id":1730820,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-11-22T22:21:48.000Z","date":"2023-11-20","kind":"sale","planned":true,"acquired":false,"shares":4198,"price":18.34,"value":76991.32,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.78 to $18.77, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) and (3) to this Form 4."}],"balance_after":267581,"source":{"system":"sec-edgar","filing":"0001517413-23-000346","document":"wk-form4_1700691696.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000346/wk-form4_1700691696.xml","form_type":"4"}},{"id":1736130,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Performance rights","published_at":"2023-11-17T22:25:50.000Z","date":"2023-11-15","kind":"exercise","planned":false,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Reflects the conversion of previously granted performance-based restricted stock units (PRSUs). Each PRSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. 50,000 of the 200,000 PRSUs vested based on the achievement of a performance condition (Issuer's Class A Common Stock achieving a sixty-day consecutive trailing average closing price of $17.25 per share)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"One fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $17.25 per share (with the earliest such vesting date being November 15, 2023, including if the performance condition is satisfied before such date); one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $23.00 per share (with the earliest such vesting date being November 15, 2024, including if the performance condition is satisfied before such date);"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $34.50 per share (with the earliest such vesting date being November 15, 2025, including if the performance condition is satisfied before such date); one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $46.00 per share (with the earliest such vesting date being November 15, 2026, including if the performance condition is satisfied before such date). Any unvested tranche will be forfeited if the applicable market price is not achieved on or before September 6, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"One fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $17.25 per share (with the earliest such vesting date being November 15, 2023, including if the performance condition is satisfied before such date); one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $23.00 per share (with the earliest such vesting date being November 15, 2024, including if the performance condition is satisfied before such date);"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $34.50 per share (with the earliest such vesting date being November 15, 2025, including if the performance condition is satisfied before such date); one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $46.00 per share (with the earliest such vesting date being November 15, 2026, including if the performance condition is satisfied before such date). Any unvested tranche will be forfeited if the applicable market price is not achieved on or before September 6, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F6","text":"Represents the maximum number of shares remaining that may be issued pursuant to the PRSUs."}],"balance_after":150000,"derivative":{"underlying":"Class A Common Stock","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0001517413-23-000340","document":"wk-form4_1700259935.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000340/wk-form4_1700259935.xml","form_type":"4"}},{"id":1736129,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-11-17T22:25:50.000Z","date":"2023-11-16","kind":"sale","planned":false,"acquired":false,"shares":31482,"price":16.24,"value":511267.68,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units and PRSUs."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.12 to $16.32. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote  (3) to this Form 4."}],"balance_after":271779,"source":{"system":"sec-edgar","filing":"0001517413-23-000340","document":"wk-form4_1700259935.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000340/wk-form4_1700259935.xml","form_type":"4"}},{"id":1736128,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-11-17T22:25:50.000Z","date":"2023-11-15","kind":"exercise","planned":false,"acquired":true,"shares":50000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Reflects the conversion of previously granted performance-based restricted stock units (PRSUs). Each PRSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. 50,000 of the 200,000 PRSUs vested based on the achievement of a performance condition (Issuer's Class A Common Stock achieving a sixty-day consecutive trailing average closing price of $17.25 per share)."}],"balance_after":303261,"source":{"system":"sec-edgar","filing":"0001517413-23-000340","document":"wk-form4_1700259935.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000340/wk-form4_1700259935.xml","form_type":"4"}},{"id":1755595,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-10-24T21:04:04.000Z","date":"2023-10-20","kind":"sale","planned":true,"acquired":false,"shares":7000,"price":14.6,"value":102200.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.24 to $14.89, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":253261,"source":{"system":"sec-edgar","filing":"0001517413-23-000287","document":"wk-form4_1698181430.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000287/wk-form4_1698181430.xml","form_type":"4"}},{"id":1774515,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-09-22T22:04:53.000Z","date":"2023-09-20","kind":"sale","planned":true,"acquired":false,"shares":5690,"price":19.69,"value":112036.1,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.35 to $20.19, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":260261,"source":{"system":"sec-edgar","filing":"0001517413-23-000273","document":"wk-form4_1695420284.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000273/wk-form4_1695420284.xml","form_type":"4"}},{"id":1776032,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-09-20T21:15:53.000Z","date":"2023-09-18","kind":"sale","planned":false,"acquired":false,"shares":4706,"price":20.4,"value":96002.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.36 to $20.40. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote 2 to this Form 4."}],"balance_after":265951,"source":{"system":"sec-edgar","filing":"0001517413-23-000266","document":"wk-form4_1695244537.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000266/wk-form4_1695244537.xml","form_type":"4"}},{"id":1791773,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-08-31T21:21:11.000Z","date":"2023-08-29","kind":"sale","planned":false,"acquired":false,"shares":585,"price":22.07,"value":12910.95,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.07 to $22.28. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote 2 to this Form 4."}],"balance_after":270657,"source":{"system":"sec-edgar","filing":"0001517413-23-000257","document":"wk-form4_1693516845.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000257/wk-form4_1693516845.xml","form_type":"4"}},{"id":1798425,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-08-23T21:15:05.000Z","date":"2023-08-21","kind":"sale","planned":true,"acquired":false,"shares":200,"price":19.5,"value":3900.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.48 to $19.51, inclusive."}],"balance_after":271242,"source":{"system":"sec-edgar","filing":"0001517413-23-000246","document":"wk-form4_1692825290.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000246/wk-form4_1692825290.xml","form_type":"4"}},{"id":1798424,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-08-23T21:15:05.000Z","date":"2023-08-21","kind":"sale","planned":true,"acquired":false,"shares":6800,"price":18.82,"value":127976.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.48 to $19.24, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) to this Form 4."}],"balance_after":271442,"source":{"system":"sec-edgar","filing":"0001517413-23-000246","document":"wk-form4_1692825290.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000246/wk-form4_1692825290.xml","form_type":"4"}},{"id":1801642,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-08-18T21:41:46.000Z","date":"2023-08-16","kind":"sale","planned":false,"acquired":false,"shares":10025,"price":18.51,"value":185562.75,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.33 to $18.51. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote 2 to this Form 4."}],"balance_after":278242,"source":{"system":"sec-edgar","filing":"0001517413-23-000240","document":"wk-form4_1692394890.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000240/wk-form4_1692394890.xml","form_type":"4"}},{"id":1824042,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-07-24T21:32:50.000Z","date":"2023-07-20","kind":"sale","planned":true,"acquired":false,"shares":1000,"price":18.87,"value":18870.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.60 to $18.98, inclusive."}],"balance_after":288267,"source":{"system":"sec-edgar","filing":"0001517413-23-000203","document":"wk-form4_1690234357.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000203/wk-form4_1690234357.xml","form_type":"4"}},{"id":1824041,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-07-24T21:32:50.000Z","date":"2023-07-20","kind":"sale","planned":true,"acquired":false,"shares":6000,"price":17.91,"value":107460.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.59 to $18.58, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) to this Form 4."}],"balance_after":289267,"source":{"system":"sec-edgar","filing":"0001517413-23-000203","document":"wk-form4_1690234357.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000203/wk-form4_1690234357.xml","form_type":"4"}},{"id":1846202,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-06-22T21:11:23.000Z","date":"2023-06-20","kind":"sale","planned":true,"acquired":false,"shares":400,"price":17.17,"value":6868.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.15 to $17.18, inclusive."}],"balance_after":295267,"source":{"system":"sec-edgar","filing":"0001517413-23-000187","document":"wk-form4_1687468275.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000187/wk-form4_1687468275.xml","form_type":"4"}},{"id":1846201,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-06-22T21:11:23.000Z","date":"2023-06-20","kind":"sale","planned":true,"acquired":false,"shares":6600,"price":16.65,"value":109890.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.14 to $17.13, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) to this Form 4."}],"balance_after":295667,"source":{"system":"sec-edgar","filing":"0001517413-23-000187","document":"wk-form4_1687468275.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000187/wk-form4_1687468275.xml","form_type":"4"}},{"id":1847574,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-06-21T21:11:25.000Z","date":"2023-06-16","kind":"sale","planned":false,"acquired":false,"shares":4698,"price":17.81,"value":83671.38,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."}],"balance_after":302267,"source":{"system":"sec-edgar","filing":"0001517413-23-000183","document":"wk-form4_1687381876.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000183/wk-form4_1687381876.xml","form_type":"4"}},{"id":1869162,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-06-02T21:18:50.000Z","date":"2023-05-31","kind":"sale","planned":false,"acquired":false,"shares":585,"price":15.67,"value":9166.95,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted performance-based Restricted Stock Units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.67 to $15.90. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote 2  to this Form 4."}],"balance_after":306965,"source":{"system":"sec-edgar","filing":"0001517413-23-000142","document":"wk-form4_1685740720.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000142/wk-form4_1685740720.xml","form_type":"4"}},{"id":1879430,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-05-24T21:16:25.000Z","date":"2023-05-22","kind":"sale","planned":true,"acquired":false,"shares":7000,"price":13.42,"value":93940.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.93 to $13.64, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (3) to this Form 4."}],"balance_after":307550,"source":{"system":"sec-edgar","filing":"0001517413-23-000119","document":"wf-form4_168496296255834.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000119/wf-form4_168496296255834.xml","form_type":"4"}},{"id":1879429,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-05-24T21:16:25.000Z","date":"2023-05-19","kind":"grant","planned":true,"acquired":true,"shares":2500,"price":7.14,"value":17850.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares acquired under the Fastly, Inc. 2019 Employee Stock Purchase Plan in a transaction exempt under Rule 16b-3(c)."}],"balance_after":314550,"source":{"system":"sec-edgar","filing":"0001517413-23-000119","document":"wf-form4_168496296255834.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000119/wf-form4_168496296255834.xml","form_type":"4"}},{"id":1886537,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-05-18T21:08:56.000Z","date":"2023-05-16","kind":"sale","planned":false,"acquired":false,"shares":8783,"price":13.17,"value":115672.11,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."}],"balance_after":312050,"source":{"system":"sec-edgar","filing":"0001517413-23-000114","document":"wf-form4_168444411710656.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000114/wf-form4_168444411710656.xml","form_type":"4"}},{"id":1914802,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-04-24T21:41:05.000Z","date":"2023-04-20","kind":"sale","planned":true,"acquired":false,"shares":4351,"price":16.52,"value":71878.52,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.29 to $17.01, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":320833,"source":{"system":"sec-edgar","filing":"0001517413-23-000082","document":"wf-form4_168237245027807.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000082/wf-form4_168237245027807.xml","form_type":"4"}},{"id":1933779,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-03-31T23:03:00.000Z","date":"2023-03-29","kind":"grant","planned":false,"acquired":true,"shares":108949,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares are represented by restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock upon settlement. 100% of the RSUs are initially subject to vesting. One-twelfth (8.33%) of the total RSUs will vest on May 15, 2023 and the remainder will vest in 11 equal quarterly installments (August, November, February and May) of one-twelfth thereafter (8.33% of the total RSUs will vest per quarter), in each case subject to the Reporting Person's continued service with the Issuer through each applicable vesting date."}],"balance_after":325184,"source":{"system":"sec-edgar","filing":"0001517413-23-000058","document":"wf-form4_168030376756803.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000058/wf-form4_168030376756803.xml","form_type":"4"}},{"id":1941291,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-03-22T21:07:39.000Z","date":"2023-03-20","kind":"sale","planned":true,"acquired":false,"shares":7000,"price":15.31,"value":107170.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.06 to $15.54, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":216235,"source":{"system":"sec-edgar","filing":"0001517413-23-000053","document":"wf-form4_167951924736729.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000053/wf-form4_167951924736729.xml","form_type":"4"}},{"id":1944177,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common 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These shares were sold in multiple transactions at prices ranging from $15.18 to $15.76, inclusive."}],"balance_after":210097,"source":{"system":"sec-edgar","filing":"0001517413-23-000022","document":"wf-form4_167719015958052.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000022/wf-form4_167719015958052.xml","form_type":"4"}},{"id":1995393,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-02-23T22:09:43.000Z","date":"2023-02-21","kind":"sale","acquired":false,"shares":6300,"price":14.31,"value":90153.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.08 to $14.89, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) to this Form 4."}],"balance_after":210797,"source":{"system":"sec-edgar","filing":"0001517413-23-000022","document":"wf-form4_167719015958052.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741323000022/wf-form4_167719015958052.xml","form_type":"4"}},{"id":2002956,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2023-02-21T22:26:25.000Z","date":"2023-02-17","kind":"sale","acquired":false,"shares":7000,"price":15.79,"value":110530.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $8.82 to $8.84, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote 2 to this Form 4."}],"balance_after":235040,"source":{"system":"sec-edgar","filing":"0001517413-22-000173","document":"wf-form4_167157470016288.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000173/wf-form4_167157470016288.xml","form_type":"4"}},{"id":2106409,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-11-22T22:11:08.000Z","date":"2022-11-18","kind":"grant","acquired":true,"shares":1,"price":7.59,"value":7.59,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares acquired under the Fastly, Inc. 2019 Employee Stock Purchase Plan in a transaction exempt under Rule 16b-3(c)."}],"balance_after":239746,"source":{"system":"sec-edgar","filing":"0001517413-22-000171","document":"wf-form4_166915505416164.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000171/wf-form4_166915505416164.xml","form_type":"4"}},{"id":2110029,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-11-18T22:41:33.000Z","date":"2022-11-17","kind":"sale","acquired":false,"shares":7000,"price":9.3,"value":65100.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."}],"balance_after":239745,"source":{"system":"sec-edgar","filing":"0001517413-22-000167","document":"wf-form4_166881127555870.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000167/wf-form4_166881127555870.xml","form_type":"4"}},{"id":2110028,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-11-18T22:41:33.000Z","date":"2022-11-16","kind":"sale","acquired":false,"shares":6501,"price":10.44,"value":67870.44,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.30 to $10.44, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":246745,"source":{"system":"sec-edgar","filing":"0001517413-22-000167","document":"wf-form4_166881127555870.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000167/wf-form4_166881127555870.xml","form_type":"4"}},{"id":2134476,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-10-19T21:17:09.000Z","date":"2022-10-17","kind":"sale","acquired":false,"shares":7000,"price":8.07,"value":56490.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.73 to $8.24. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes to this Form 4."}],"balance_after":253246,"source":{"system":"sec-edgar","filing":"0001517413-22-000150","document":"wf-form4_166621419785053.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000150/wf-form4_166621419785053.xml","form_type":"4"}},{"id":2152532,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Performance rights","published_at":"2022-09-22T21:20:26.000Z","date":"2022-09-20","kind":"grant","acquired":true,"shares":200000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares are represented by performance-based restricted stock units (PRSUs). Each PRSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. One fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $17.25 per share (with the earliest such vesting date being November 15, 2023, including if the performance condition is satisfied before such date); one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $23.00 per share (with the earliest such vesting date being November 15, 2024, including if the performance condition is satisfied before such date);"},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $34.50 per share (with the earliest such vesting date being November 15, 2025, including if the performance condition is satisfied before such date);one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $46.00 per share (with the earliest such vesting date being November 15, 2026, including if the performance condition is satisfied before such date). Any unvested tranche will be forfeited if the applicable market price is not achieved on or before September 6, 2027."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares are represented by performance-based restricted stock units (PRSUs). Each PRSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. One fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $17.25 per share (with the earliest such vesting date being November 15, 2023, including if the performance condition is satisfied before such date); one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $23.00 per share (with the earliest such vesting date being November 15, 2024, including if the performance condition is satisfied before such date);"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $34.50 per share (with the earliest such vesting date being November 15, 2025, including if the performance condition is satisfied before such date);one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $46.00 per share (with the earliest such vesting date being November 15, 2026, including if the performance condition is satisfied before such date). Any unvested tranche will be forfeited if the applicable market price is not achieved on or before September 6, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares are represented by performance-based restricted stock units (PRSUs). Each PRSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. One fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $17.25 per share (with the earliest such vesting date being November 15, 2023, including if the performance condition is satisfied before such date); one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $23.00 per share (with the earliest such vesting date being November 15, 2024, including if the performance condition is satisfied before such date);"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $34.50 per share (with the earliest such vesting date being November 15, 2025, including if the performance condition is satisfied before such date);one fourth of the PRSUs will vest upon the Issuer's Class A Common Stock achieving a market price of $46.00 per share (with the earliest such vesting date being November 15, 2026, including if the performance condition is satisfied before such date). Any unvested tranche will be forfeited if the applicable market price is not achieved on or before September 6, 2027."}],"balance_after":200000,"derivative":{"underlying":"Class A Common Stock","underlying_shares":200000},"source":{"system":"sec-edgar","filing":"0001517413-22-000147","document":"wf-form4_166388161189923.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000147/wf-form4_166388161189923.xml","form_type":"4"}},{"id":2155313,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-09-19T22:43:39.000Z","date":"2022-09-16","kind":"sale","acquired":false,"shares":2998,"price":9.51,"value":28510.98,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.33 to $9.52, inclusive."}],"balance_after":260246,"source":{"system":"sec-edgar","filing":"0001517413-22-000144","document":"wf-form4_166362716662886.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000144/wf-form4_166362716662886.xml","form_type":"4"}},{"id":2155312,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-09-19T22:43:39.000Z","date":"2022-09-15","kind":"sale","acquired":false,"shares":7000,"price":9.92,"value":69440.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.61 to $10.21. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (4) to this Form 4."}],"balance_after":263244,"source":{"system":"sec-edgar","filing":"0001517413-22-000144","document":"wf-form4_166362716662886.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000144/wf-form4_166362716662886.xml","form_type":"4"}},{"id":2179154,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-08-18T21:05:24.000Z","date":"2022-08-17","kind":"sale","acquired":false,"shares":30000,"price":11.29,"value":338700.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.13 to $11.61, inclusive."}],"balance_after":270244,"source":{"system":"sec-edgar","filing":"0001517413-22-000128","document":"wf-form4_166085670322763.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000128/wf-form4_166085670322763.xml","form_type":"4"}},{"id":2179153,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-08-18T21:05:24.000Z","date":"2022-08-16","kind":"sale","acquired":false,"shares":3979,"price":11.97,"value":47628.63,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.77 to $11.97. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (4) to this Form 4."}],"balance_after":300244,"source":{"system":"sec-edgar","filing":"0001517413-22-000128","document":"wf-form4_166085670322763.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000128/wf-form4_166085670322763.xml","form_type":"4"}},{"id":2225015,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-06-21T21:10:34.000Z","date":"2022-06-16","kind":"sale","acquired":false,"shares":3008,"price":10.54,"value":31704.32,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.53 to $10.55, inclusive."}],"balance_after":304223,"source":{"system":"sec-edgar","filing":"0001517413-22-000103","document":"wf-form4_165584581772506.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000103/wf-form4_165584581772506.xml","form_type":"4"}},{"id":2257797,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-05-24T21:53:09.000Z","date":"2022-05-20","kind":"grant","acquired":true,"shares":606,"price":10.14,"value":6144.84,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares acquired under the Fastly, Inc. 2019 Employee Stock Purchase Plan in a transaction exempt under Rule 16b-3(c)."}],"balance_after":307231,"source":{"system":"sec-edgar","filing":"0001517413-22-000072","document":"wf-form4_165342917168666.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000072/wf-form4_165342917168666.xml","form_type":"4"}},{"id":2265242,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-05-18T21:47:37.000Z","date":"2022-05-17","kind":"sale","acquired":false,"shares":883,"price":11.97,"value":10569.51,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."}],"balance_after":306625,"source":{"system":"sec-edgar","filing":"0001517413-22-000063","document":"wf-form4_165291039890826.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000063/wf-form4_165291039890826.xml","form_type":"4"}},{"id":2265241,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-05-18T21:47:37.000Z","date":"2022-05-16","kind":"grant","acquired":true,"shares":100000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares are represented by restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock upon settlement. 100% of the RSUs are initially subject to vesting. One-eighth (12.5%) of the total RSUs will vest on August 15, 2022 and the remainder will vest in 7 equal quarterly installments (November, February, May and August) of one-eighth thereafter (12.5% of the total RSUs will vest per quarter), in each case subject to the Reporting Person's continued service with the Issuer through each applicable vesting date."}],"balance_after":307508,"source":{"system":"sec-edgar","filing":"0001517413-22-000063","document":"wf-form4_165291039890826.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000063/wf-form4_165291039890826.xml","form_type":"4"}},{"id":2322839,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-03-21T21:15:56.000Z","date":"2022-03-16","kind":"sale","acquired":false,"shares":2888,"price":13.96,"value":40316.48,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units."}],"balance_after":207508,"source":{"system":"sec-edgar","filing":"0001517413-22-000043","document":"wf-form4_164789733871469.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000043/wf-form4_164789733871469.xml","form_type":"4"}},{"id":2394029,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2022-02-16T00:10:58.000Z","date":"2022-02-11","kind":"grant","acquired":true,"shares":57700,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares are represented by restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock upon settlement. 100% of the RSUs are initially subject to vesting. One-sixteenth (6.25%) of the total RSUs will vest on May 15, 2022 and the remainder will vest in 15 equal quarterly installments (August, November, February and May) of one-sixteenth thereafter (6.25% of the total RSUs will vest per quarter), in each case subject to the Reporting Person's continued service with the Issuer through each applicable vesting date."}],"balance_after":210396,"source":{"system":"sec-edgar","filing":"0001517413-22-000012","document":"wf-form4_164497023778290.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741322000012/wf-form4_164497023778290.xml","form_type":"4"}},{"id":2462148,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk 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One-sixteenth (6.25%) of the total RSUs will vest on December 15, 2021 and the remainder will vest in 15 equal quarterly installments of one-sixteenth thereafter (6.25% of the total RSUs will vest per quarter), subject to the grantee's continued service with the Company through each applicable vesting date."}],"balance_after":170000,"source":{"system":"sec-edgar","filing":"0001517413-21-000170","document":"wf-form4_163104897889674.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741321000170/wf-form4_163104897889674.xml","form_type":"4"}},{"id":2772890,"issuer":{"id":785,"kind":"organization","name":"Fastly, Inc.","symbol":"FSLY"},"owners":[{"id":107772,"kind":"person","name":"Shirk Brett","position":1,"cik":"0001642259","reported_name":"Shirk Brett","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President, CRO"}}],"security":"Class A Common Stock","published_at":"2021-03-24T21:29:55.000Z","date":"2021-03-22","kind":"grant","acquired":true,"shares":100000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares are represented by restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock upon settlement. 100% of the RSUs are initially subject to vesting. 12.5% of the RSUs vest on September 15, 2021, thereafter 60% of the RSUs vest in quarterly installments for two years and thereafter the remaining 27.5% of the RSUs vest in quarterly installments for one year, in each case subject to the Reporting Person's continued service with the Issuer through each applicable vesting date."}],"balance_after":100000,"source":{"system":"sec-edgar","filing":"0001517413-21-000042","document":"wf-form4_161662137983614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517413/000151741321000042/wf-form4_161662137983614.xml","form_type":"4"}}]}