Artur Bergman - 18 Aug 2026 Form 4 Insider Report for Fastly, Inc. (FSLY)

Reporting relationship: Chief Technology Officer, Director
Issuer ticker: FSLY
Reported as of: 18 Aug 2026
Net transaction value: -$1,709,609
SEC form: 4
Accepted by SEC: 20 Aug 2026, 17:01:01 UTC
Prior SEC filing: 05 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Tara Seracka, Attorney-in-Fact

Key filing fact

Artur Bergman filed Form 4 for Fastly, Inc. (FSLY) on 20 Aug 2026.

Key facts

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

Change

Previous filing in this sequence was filed on 05 Jun 2026.
Current net transaction value: -$1,709,609.

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 0001769490 Primary reporting owner

Bergman Artur

Relationship: Chief Technology Officer, Director
Address: C/O FASTLY, INC., 475 BRANNAN STREET, SUITE 300, SAN FRANCISCO
Signature: /s/ Tara Seracka, Attorney-in-Fact
Signature date: 20 Aug 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: $926,268
Shares: -32,387
Change %: -1.6%
Price: $28.60
Shares after: 2,005,191
Date: 18 Aug 2026
Ownership: Direct
Footnotes: F1, F2, F3

FSLY transaction

Class A Common Stock

Sale

Transaction value: $265,447
Shares: -11,088
Change %: -0.55%
Price: $23.94
Shares after: 1,994,103
Date: 19 Aug 2026
Ownership: Direct
Footnotes: F4, F5, F6

FSLY transaction

Class A Common Stock

Sale

Transaction value: $410,546
Shares: -16,435
Change %: -0.82%
Price: $24.98
Shares after: 1,977,668
Date: 19 Aug 2026
Ownership: Direct
Footnotes: F4, F5, F7

FSLY transaction

Class A Common Stock

Sale

Transaction value: $107,348
Shares: -4,164
Change %: -0.21%
Price: $25.78
Shares after: 1,973,504
Date: 19 Aug 2026
Ownership: Direct
Footnotes: F4, F5, F8

FSLY holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,605,961
Date: 18 Aug 2026
Ownership: See Footnote.
Footnotes: F3, F9

FSLY holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 840,005
Date: 18 Aug 2026
Ownership: See Footnote
Footnotes: F10

FSLY holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 109,686
Date: 18 Aug 2026
Ownership: See Footnote
Footnotes: F11

FSLY holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 156,521
Date: 18 Aug 2026
Ownership: See Footnote
Footnotes: F12

FSLY holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 588,671
Date: 18 Aug 2026
Ownership: See Footnote
Footnotes: F13

FSLY holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 254,808
Date: 18 Aug 2026
Ownership: See Footnote
Footnotes: F14

^* 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 14 footnotes

Footnote F1

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

Footnote F2

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.60 to $29.13, 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), (6), (7) and (8) to this Form 4.

Footnote F3

Amounts reflect the shift from direct to indirect ownership of 1,060 shares contributed by Mr. Bergman to the Per Artur Bergman Revocable Trust on March 2, 2026.

Footnote F4

The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 3, 2025.

Footnote F5

The shares were sold by the Per Artur Bergman Revocable Trust, to which the reporting person contributed 31,687 shares of common stock of the Issuer in a transaction that resulted in a change in the form of beneficial ownership from direct to indirect.

Footnote F6

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.57 to $24.56, inclusive.

Footnote F7

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.57 to $25.56, inclusive.

Footnote F8

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.58 to $26.56, inclusive.

Footnote F9

The shares are held by The Per Artur Bergman Revocable Trust, of which the reporting person is settlor, sole trustee, and sole beneficiary.

Footnote F10

The shares are held by The Artur Bergman Remainder Trust One DTD 5/2/2019, of which the reporting person is the investment advisor.

Footnote F11

The shares are held by The Artur Bergman Remainder Trust Three DTD 5/2/2019, of which the reporting person is the investment advisor.

Footnote F12

The shares are held by The PAB 2021 Remainder Trust, of which the reporting person is the investment advisor.

Footnote F13

The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 4, of which the reporting person is trustee.

Footnote F14

The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 5, of which the reporting person is trustee.

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