[Form 4] Fastly, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Fastly, Inc. (FSLY) insider sale and holdings summary: Artur Bergman reported a sale on 09/22/2025 under a Rule 10b5-1 trading plan in which 20,000 shares of Class A common stock were sold at a weighted average price of $8.70. The sale moved those 20,000 shares from direct ownership into an indirect holding (the Per Artur Bergman Revocable Trust). After the reported transaction, Mr. Bergman directly beneficially owned 3,461,276 shares. Additional indirect holdings are reported across several trusts totaling multiple separate share blocks, including 2,500,558; 840,005; 109,686; 50,481; 792,998; and 156,521 shares respectively. The filing was signed by an attorney-in-fact on behalf of Mr. Bergman on 09/24/2025.

Positive

• Sale executed under a Rule 10b5-1 plan, which provides pre-clearance and reduces potential for insider timing concerns
• Clear disclosure of trust arrangements and roles (settlor, trustee, investment advisor), improving transparency
• Significant retained ownership remains, with 3,461,276 shares directly owned after the transaction and additional indirect holdings

Negative

• Reported sale of 20,000 shares reduced direct holding (though the shares transferred into a trust rather than fully exiting insider-related holdings)

Insights

Financial Analyst

TL;DR: A routine Rule 10b5-1 sale of 20,000 shares occurred; reporting shows sizable remaining direct and indirect ownership.

The 20,000-share disposition reported at a weighted average price of $8.70 was executed pursuant to a pre-established Rule 10b5-1 plan adopted June 3, 2025, which generally reduces insider timing concerns. The transaction converted direct shares into trust-held indirect ownership rather than an outright market reduction of family economic exposure. Direct beneficial ownership after the transaction remains material at 3,461,276 shares, with several additional trust-held blocks disclosed. From an analytical perspective, this filing is routine and not, by itself, materially informative about company fundamentals.

Corporate Governance Expert

TL;DR: The disclosure follows standard governance practices; use of trustee arrangements and a 10b5-1 plan is clearly documented.

The Form 4 details the reporting person’s multiple trust arrangements and explicitly states roles (settlor, trustee, investment advisor). The existence of a dated 10b5-1 plan and footnoted trust structures improves transparency for shareholders and regulators. The report is properly signed by an attorney-in-fact and includes explanatory footnotes describing the nature of indirect holdings. This is a compliant, well-documented insider disclosure.

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

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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)
09/22/2025

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	09/22/2025		S(1)		20,000(2)	D	$8.7(3)	3,461,276	D
Class A Common Stock								2,500,558	I	See Foonote(4)
Class A Common Stock								840,005	I	See Footnote(5)
Class A Common Stock								109,686	I	See Footnote(6)
Class A Common Stock								50,481	I	See Footnote(7)
Class A Common Stock								792,998	I	See Footnote(8)
Class A Common Stock								156,521	I	See Footnote(9)

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

2. The shares were sold by the Per Artur Bergman Revocable Trust, to which the reporting person contributed 20,000 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.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.43 to $8.78. 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 (3) to this Form 4.

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

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

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

7. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 3, of which the reporting person is trustee.

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

9. 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	09/24/2025
	** 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.

FAQ

What did Artur Bergman disclose in the FSLY Form 4 filed for 09/22/2025?

He disclosed a sale of 20,000 Class A shares executed on 09/22/2025 under a Rule 10b5-1 plan at a weighted average price of $8.70.

How many shares does Artur Bergman directly own after the reported transaction?

Following the transaction, Mr. Bergman directly beneficially owned 3,461,276 shares of Class A common stock.

Were the sold shares fully liquidated or moved to a trust?

The 20,000 shares were contributed to The Per Artur Bergman Revocable Trust, changing the form of beneficial ownership from direct to indirect.

Does the filing explain the nature of Mr. Bergman's indirect holdings?

Yes. Footnotes identify multiple trusts and state Mr. Bergman's roles (settlor, trustee, or investment advisor) for each indirect holding block.

When was the Rule 10b5-1 trading plan adopted?

The filing states the plan was adopted on June 3, 2025.