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  4. [Form 4] Fastly, Inc. Insider Trading Activity

Fastly (FSLY) CTO and director Artur Bergman reports insider stock sales

Filing Impact
(Moderate)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Fastly, Inc. director and Chief Technology Officer Artur Bergman reported recent sales of Class A common stock. On November 28, 2025, he sold 849 shares at $11.82 per share, leaving him with 2,934,881 shares held directly afterward. On December 1, 2025, he sold an additional 1,080 shares at $11.45 per share and 40,000 shares at a weighted average price of $11.51, after which his direct holdings were 2,893,801 shares.

The filing notes that one sale was made to satisfy tax obligations tied to vesting restricted stock units and that the December 1 trades were executed under a Rule 10b5-1 trading plan adopted on June 3, 2025. Bergman also reports substantial indirect ownership through several trusts, including 2,500,558 shares held by The Per Artur Bergman Revocable Trust, along with additional blocks held in multiple remainder and grantor retained annuity trusts.

Positive

  • None.

Negative

  • None.
Insider Bergman Artur
Role Chief Technology Officer
Sold 41,929 shs ($483K)
Type Security Shares Price Value
Sale Class A Common Stock 1,080 $11.45 $12K
Sale Class A Common Stock 40,000 $11.51 $460K
Sale Class A Common Stock 849 $11.82 $10K
holding Class A Common Stock -- -- --
holding Class A Common Stock -- -- --
holding Class A Common Stock -- -- --
holding Class A Common Stock -- -- --
holding Class A Common Stock -- -- --
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 2,933,801 shares (Direct); Class A Common Stock — 2,500,558 shares (Indirect, See Foonote)
Footnotes (1)
  1. Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 3, 2025. The shares were sold by the Per Artur Bergman Revocable Trust, to which the reporting person contributed 41,080 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.21 to $11.75. 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 range set forth in footnote (4) to this Form 4. The shares are held by The Per Artur Bergman Revocable Trust, of which the reporting person is settlor, sole trustee, and sole beneficiary. The shares are held by The Artur Bergman Remainder Trust One DTD 5/2/2019, of which the reporting person is the investment advisor. The shares are held by The Artur Bergman Remainder Trust Three DTD 5/2/2019, of which the reporting person is the investment advisor. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 3, of which the reporting person is trustee. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 4, of which the reporting person is trustee. The shares are held by The PAB 2021 Remainder Trust, of which the reporting person is the investment advisor.
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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4 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
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
 Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Bergman Artur
(Last) (First) (Middle)
C/O FASTLY, INC.
475 BRANNAN STREET, SUITE 300
(Street)
SAN FRANCISCO CA 94107
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Fastly, Inc. [ FSLY ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Technology Officer
3. Date of Earliest Transaction (Month/Day/Year)
11/28/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 11/28/2025 S(1) 849 D $11.82 2,934,881 D
Class A Common Stock 12/01/2025 S(2) 1,080(3) D $11.45 2,933,801 D
Class A Common Stock 12/01/2025 S(2) 40,000(3) D $11.51(4) 2,893,801 D
Class A Common Stock 2,500,558 I See Foonote(5)
Class A Common Stock 840,005 I See Footnote(6)
Class A Common Stock 109,686 I See Footnote(7)
Class A Common Stock 50,481 I See Footnote(8)
Class A Common Stock 792,998 I See Footnote(9)
Class A Common Stock 156,521 I See Footnote(10)
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 (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 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 (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (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: 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
Explanation of Responses:
1. Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units.
2. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 3, 2025.
3. The shares were sold by the Per Artur Bergman Revocable Trust, to which the reporting person contributed 41,080 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.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.21 to $11.75. 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 range set forth in footnote (4) to this Form 4.
5. The shares are held by The Per Artur Bergman Revocable Trust, of which the reporting person is settlor, sole trustee, and sole beneficiary.
6. The shares are held by The Artur Bergman Remainder Trust One DTD 5/2/2019, of which the reporting person is the investment advisor.
7. The shares are held by The Artur Bergman Remainder Trust Three DTD 5/2/2019, of which the reporting person is the investment advisor.
8. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 3, of which the reporting person is trustee.
9. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 4, of which the reporting person is trustee.
10. The shares are held by The PAB 2021 Remainder Trust, of which the reporting person is the investment advisor.
Remarks:
/s/ Tara Seracka, Attorney-in-Fact 12/02/2025
** 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 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 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, see 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Fastly (FSLY) report for Artur Bergman?

The report shows that Artur Bergman, Fastly's director and Chief Technology Officer, sold Class A common stock in several transactions on November 28, 2025 and December 1, 2025, while remaining a significant shareholder.

How many Fastly (FSLY) shares did Artur Bergman sell and at what prices?

Bergman sold 849 shares at $11.82 on November 28, 2025, and on December 1, 2025 he sold 1,080 shares at $11.45 and 40,000 shares at a weighted average price of $11.51 per share.

How many Fastly (FSLY) shares does Artur Bergman hold directly after these sales?

After the reported transactions, Artur Bergman directly beneficially owned 2,893,801 shares of Fastly Class A common stock.

Did Artur Bergman use a Rule 10b5-1 plan for the Fastly (FSLY) stock sales?

Yes. The filing states that the December 1, 2025 sales were effected under a Rule 10b5-1 trading plan adopted by Bergman on June 3, 2025.

Why were some of Artur Bergman’s Fastly (FSLY) shares sold?

The filing explains that one block of shares was sold to satisfy tax obligations related to the vesting of previously granted restricted stock units.

What indirect Fastly (FSLY) shareholdings does Artur Bergman report?

Bergman reports indirect ownership through several trusts, including 2,500,558 shares held by The Per Artur Bergman Revocable Trust, plus additional shares in various remainder and grantor retained annuity trusts.

What is Artur Bergman’s role at Fastly (FSLY)?

According to the report, Artur Bergman is both a director and the Chief Technology Officer of Fastly, Inc.