Latest EDGAR 4 filed on 2026-07-20, report date 2026-07-16: Compton Charles Lacey III / Fastly, Inc. reports ownership changes; on 07/16/2026; in Class A Common Stock; including 11,412 shares at 20.65 per share; 2,714 shares at 20.51 per share; 1,049,819 shares at 21.1 per share; 4,204 shares at 21.1 per share; 1,045,615 shares at 155 per share; 1. Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units. 2. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 27, 2025. 3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.76 to $20.73, 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 (3) and (4) to this Form 4. 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.77 to $21.76, inclusive. Remarks: /s/ Tara Seracka, Attorney-in-Fact 07/20/2026 ** Signature of Reporting Person 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 (b)(v). ** Intentional misstatements or omissions of facts constitute Federal Criminal Violations 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, Instruction 6 for procedure. Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number. * Form 4: SEC 1474 (03-26)