[Form 4] Fastly, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Artur Bergman, Fastly (FSLY) director and Chief Technology Officer, reported a small sale and substantial remaining holdings. On 08/27/2025 he sold 849 shares of Class A common stock at $7.30 per share to satisfy tax obligations related to the vesting of previously granted restricted stock units. After the reported sale he directly beneficially owned 3,579,414 shares and also held additional Class A shares indirectly through several trusts, including 2,500,558; 840,005; 109,686; 50,481; 792,998; and 156,521 shares, as detailed in the filing. The Form 4 was executed by an attorney-in-fact on 08/29/2025.

Positive

• Substantial retained ownership: Reporting person directly holds 3,579,414 Class A shares after the transaction
• Additional significant indirect holdings: Multiple trusts hold sizeable Class A positions totaling several million shares (listed as 2,500,558; 840,005; 109,686; 50,481; 792,998; 156,521)
• Sale was tax-related: The disposition of 849 shares was executed to satisfy tax obligations tied to RSU vesting, indicating a non-discretionary administrative sale

Negative

• None.

Insights

Financial Analyst

TL;DR: Insider sold a nominal number of shares to cover taxes; retains large ownership via direct and trust holdings.

The filing shows a routine disposition of 849 shares at $7.30 to satisfy tax withholding on vested RSUs, a common non-economic transfer that typically does not change control or signal a material shift in insider alignment. The reporting person still directly owns 3,579,414 shares and significant indirect stakes across multiple trusts, indicating continued substantial economic exposure to Fastly's equity.

Corporate Governance Expert

TL;DR: Transaction appears administrative; governance interest remains concentrated through trusts and direct ownership.

The reported sale is documented as tax-related and modest in size. The filing lists multiple trust vehicles (revocable trust, remainder trusts, GRATs) that hold sizeable indirect positions, with the reporting person acting as settlor, trustee, or investment advisor in those entities. That structure preserves long-term alignment while centralizing voting/beneficial interests.

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
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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).

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)
08/27/2025

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	08/27/2025		S(1)		849	D	$7.3	3,579,414	D
Class A Common Stock								2,500,558	I	See Foonote(2)
Class A Common Stock								840,005	I	See Footnote(3)
Class A Common Stock								109,686	I	See Footnote(4)
Class A Common Stock								50,481	I	See Footnote(5)
Class A Common Stock								792,998	I	See Footnote(6)
Class A Common Stock								156,521	I	See Footnote(7)

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

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

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

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

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

7. 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	08/29/2025
	** 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 Fastly (FSLY) insider Artur Bergman report on Form 4?

The Form 4 reports a sale of 849 Class A shares on 08/27/2025 at $7.30 per share to satisfy tax obligations from RSU vesting, and lists remaining direct and indirect holdings.

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

After the sale, Artur Bergman directly beneficially owns 3,579,414 Class A shares.

Does Artur Bergman hold additional Fastly shares indirectly?

Yes. Indirect holdings are reported in several trusts with amounts of 2,500,558, 840,005, 109,686, 50,481, 792,998, and 156,521 Class A shares.

Why were the 849 shares sold according to the filing?

The filing states the shares were sold to satisfy tax obligations in connection with the vesting of previously granted restricted stock units.

Who signed the Form 4 and when was it executed?

The Form 4 shows the signature /s/ Tara Seracka, Attorney-in-Fact, dated 08/29/2025.