[Form 4] Fastly, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Fastly insider Artur Bergman reported sales of Class A common stock under a Rule 10b5-1 plan adopted June 3, 2025. On 09/15/2025 the filing shows two reported dispositions: 17,062 shares sold at a weighted average price of $8.49 and 2,938 shares sold at a weighted average price of $8.97, with sale prices reported in ranges between $7.89 and $9.06. The transactions changed the form of beneficial ownership for those shares from direct to indirect as they were contributed to trusts controlled by Mr. Bergman. The Form 4 is signed by an attorney-in-fact.

Positive

• Transactions executed under a Rule 10b5-1 trading plan adopted June 3, 2025, providing an affirmative defense framework
• Clear disclosure of transfers to trusts and the reporting person's roles (settlor, trustee, investment advisor), improving transparency

Negative

• Reported dispositions reduced direct ownership for the contributed shares (17,062 and 2,938 shares moved to trusts)
• Sale prices include ranges rather than exact per-trade prices, though weighted averages are provided

Insights

Financial Analyst

TL;DR: Insider sold a small number of shares under a preplanned 10b5-1 program; ownership largely remains indirect via trusts.

The sales reported—20,000 total shares approximately—represent a minor portion of the 3.48 million Class A shares reported as beneficially owned after the transactions, indicating these were routine dispositions under a trading plan rather than a broad divestiture. The filing discloses weighted average prices and price ranges, allowing precise calculation of gross proceeds if needed. The shift from direct to indirect ownership for the contributed shares is documented through multiple trusts where Mr. Bergman serves as settlor, trustee, or advisor.

Corporate Governance Expert

TL;DR: Disclosure follows required Section 16 reporting and cites a 10b5-1 plan; transfer to trusts is clearly described.

The Form 4 notes the transactions were executed pursuant to a Rule 10b5-1 plan, which provides an affirmative defense for insider trading when properly adopted. The filing transparently identifies the trusts holding the shares and the reporting person’s roles (settlor, trustee, investment advisor). Signature by an attorney-in-fact is included, and the explanatory footnotes provide ranges for transaction prices and ownership form changes, meeting standard disclosure expectations.

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).

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)
09/15/2025

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	09/15/2025		S(1)		17,062(2)	D	$8.49(3)	3,484,214	D
Class A Common Stock	09/15/2025		S(1)		2,938(4)	D	$8.97(5)	3,481,276	D
Class A Common Stock								2,500,558	I	See Foonote(6)
Class A Common Stock								840,005	I	See Footnote(7)
Class A Common Stock								109,686	I	See Footnote(8)
Class A Common Stock								50,481	I	See Footnote(9)
Class A Common Stock								792,998	I	See Footnote(10)
Class A Common Stock								156,521	I	See Footnote(11)

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 17,062 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 $7.89 to $8.87. 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 (5) to this Form 4.

4. The shares were sold by the Per Artur Bergman Revocable Trust, to which the reporting person contributed 2,938 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.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.89 to $9.06, inclusive.

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

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

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

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

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

11. 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	09/17/2025
	** 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 report on the Form 4 for FSLY?

He reported sales of Class A common stock on 09/15/2025: 17,062 shares at a weighted average $8.49 and 2,938 shares at a weighted average $8.97, executed under a 10b5-1 plan.

Were the sales part of a 10b5-1 trading plan?

Yes. The Form 4 states the sales were effected pursuant to a Rule 10b5-1 trading plan adopted June 3, 2025.

Did these transactions change Bergman's ownership form?

Yes. The filing says the contributed shares moved from direct ownership to indirect ownership held by various trusts controlled or advised by Mr. Bergman.

How many Class A shares did Bergman beneficially own after the transactions?

The filing reports 3,484,214 Class A shares beneficially owned following the reported transactions.

Do the footnotes provide exact sale prices for each trade?

No. The filing provides weighted average prices and price ranges for the trades and offers to supply detailed per-price information upon request.