Charles Lacey Compton III - 16 Jul 2026 Form 4 Insider Report for Fastly, Inc. (FSLY)

Reporting relationship: CEO, Director
Issuer ticker: FSLY
Reported as of: 16 Jul 2026
Net transaction value: -$383,421
SEC form: 4
Accepted by SEC: 20 Jul 2026, 17:01:31 UTC
Prior SEC filing: 05 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Tara Seracka, Attorney-in-Fact

Key filing fact

Charles Lacey Compton III filed Form 4 for Fastly, Inc. (FSLY) on 20 Jul 2026.

Key facts

This page summarizes Charles Lacey Compton III's Form 4 filing for Fastly, Inc. (FSLY).
4 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 20 Jul 2026, 17:01.

Change

Previous filing in this sequence was filed on 05 Jun 2026.
Current net transaction value: -$383,421.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002074428 Primary reporting owner

Compton Charles Lacey III

Relationship: CEO, Director
Address: C/O FASTLY, INC., 475 BRANNAN STREET, SUITE 300, SAN FRANCISCO
Signature: /s/ Tara Seracka, Attorney-in-Fact
Signature date: 20 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

FSLY transaction

Class A Common Stock

Sale

Transaction value: $235,658
Shares: -11,412
Change %: -1.1%
Price: $20.65
Shares after: 1,052,533
Date: 16 Jul 2026
Ownership: Direct
Footnotes: F1

FSLY transaction

Class A Common Stock

Sale

Transaction value: $55,664
Shares: -2,714
Change %: -0.26%
Price: $20.51
Shares after: 1,049,819
Date: 17 Jul 2026
Ownership: Direct
Footnotes: F2, F3

FSLY transaction

Class A Common Stock

Sale

Transaction value: $88,704
Shares: -4,204
Change %: -0.4%
Price: $21.10
Shares after: 1,045,615
Date: 17 Jul 2026
Ownership: Direct
Footnotes: F2, F4

FSLY transaction

Class A Common Stock

Sale

Transaction value: $3,394
Shares: -155
Change %: -0.01%
Price: $21.90
Shares after: 1,045,460
Date: 17 Jul 2026
Ownership: Direct
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 4 footnotes

Footnote F1

Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units.

Footnote F2

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.

Footnote F3

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.

Footnote F4

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.