[Form 4] Fastly, Inc. Insider Trading Activity

Fastly insider sale by CEO/Director Charles Lacey Compton III.

Rhea-AI Filing Summary

Fastly insider sale by CEO/Director Charles Lacey Compton III. The Form 4 reports a sale of 2,954 shares of Class A common stock on 09/03/2025 at $7.45 per share to satisfy tax obligations arising from the vesting of previously granted restricted stock units. After the reported sale, the reporting person beneficially owns 670,691 shares, held directly. The filing was submitted by one reporting person and signed by an attorney-in-fact on 09/05/2025.

Insights

Securities Analyst

TL;DR: Routine insider sale to cover taxes; not a material change to ownership.

The reported sale of 2,954 shares at $7.45 is explicitly described as a sell-to-cover transaction tied to RSU vesting. Such transactions are common for executives and typically reflect tax-liability management rather than a directional view on the company. The remaining direct beneficial ownership of 670,691 shares suggests continued material ownership. Because the filing shows a small percentage disposition relative to total holdings, the transaction is informational and unlikely to be materially impactful to investors.

Corporate Governance Expert

TL;DR: Disclosure aligns with Section 16 requirements; no governance red flags in this filing.

The Form 4 clearly identifies the reporting person as CEO and Director and documents the disposition as tax-related from vested RSUs. The timely filing and use of an attorney-in-fact signature indicate procedural compliance. There is no evidence in the form of unusual derivative activity, accelerated sales, or coordination with other insiders in this single-person filing.

Insider Trade Summary

Net Seller: 2,954 shares

Net Sell 1 txn

Insider Compton Charles Lacey III

Role CEO

Sold 2,954 shs ($22K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	2,954	$7.45	$22K

Holdings After Transaction: Class A Common Stock — 670,691 shares (Direct)

Footnotes (1)

1. F1. Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units.

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Accepted by SEC EDGAR 09/05/2025 - 05:13 PM Learn about SEC filing dates

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).

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^*

Compton Charles Lacey III

(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)
	CEO

3. Date of Earliest Transaction (Month/Day/Year)
09/03/2025

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	09/03/2025		S(1)		2,954	D	$7.45	670,691	D

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.

Remarks:

	/s/ Tara Seracka, Attorney-in-Fact	09/05/2025
	** 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.