Fastly CEO sells shares for tax obligations

Fastly, Inc. CEO Charles Lacey Compton III reported an open-market sale of Class A common stock mainly to cover taxes on equity compensation.

Rhea-AI Filing Summary

Fastly, Inc. CEO Charles Lacey Compton III reported an open-market sale of Class A common stock mainly to cover taxes on equity compensation. On May 29, 2026, he sold 15,028 shares at $16.96 per share, as noted in a footnote explaining the sale satisfied tax obligations tied to vesting Restricted Stock Units. Following this transaction, he still directly holds 1,073,258 shares, indicating the sale is small relative to his remaining stake and primarily driven by tax needs rather than a change in his overall position.

Insider Trade Summary

Net Seller: 15,028 shares

Net Sell 1 txn

Insider Compton Charles Lacey III

Role CEO

Sold 15,028 shs ($255K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	15,028	$16.96	$255K

Holdings After Transaction: Class A Common Stock — 1,073,258 shares (Direct)

Footnotes (1)

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

Key Figures

Shares sold: 15,028 shares Sale price: $16.96 per share Shares held after: 1,073,258 shares +2 more

5 metrics

Shares sold 15,028 shares Class A Common Stock sold on May 29, 2026

Sale price $16.96 per share Price for the 15,028 shares sold

Shares held after 1,073,258 shares Direct holdings following the transaction

Net shares sold 15,028 shares Net-sell direction in transaction summary

Insider role CEO and director Reporting person’s positions at Fastly, Inc.

Key Terms

Restricted Stock Units, open-market sale, Class A Common Stock, Form 4

4 terms

Restricted Stock Units financial

"vesting of previously granted Restricted Stock Units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Class A Common Stock financial

"security_title": "Class A Common Stock""

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Fastly (FSLY) CEO Charles Lacey Compton III report in this Form 4?

The CEO reported selling 15,028 shares of Fastly Class A common stock. The transaction occurred on May 29, 2026 at $16.96 per share and was disclosed as an open-market sale in SEC Form 4, with a footnote explaining the sale’s purpose.

Why did Fastly (FSLY) CEO sell 15,028 shares in this filing?

The shares were sold to satisfy tax obligations related to vesting Restricted Stock Units. The footnote clarifies the sale was tied to equity compensation taxes, suggesting a routine, compensation-driven transaction rather than a discretionary reduction of the CEO’s investment in Fastly.

How many Fastly (FSLY) shares does the CEO hold after this Form 4 sale?

After selling 15,028 shares, the CEO directly holds 1,073,258 Fastly Class A common shares. This indicates the reported sale represents only a small fraction of his overall position, leaving his remaining ownership stake largely intact despite the tax-related disposition.

What was the sale price for the Fastly (FSLY) CEO’s shares in this transaction?

The 15,028 Fastly Class A common shares were sold at $16.96 per share. This price is disclosed as the transaction price per share in the Form 4, reflecting the value received in the open-market sale used to cover RSU-related tax obligations.

Is the Fastly (FSLY) CEO’s Form 4 transaction a routine tax sale or a large discretionary sale?

The transaction is characterized as a routine tax-related sale. The footnote specifies the 15,028 shares were sold to satisfy tax obligations from vesting Restricted Stock Units, and the CEO still holds 1,073,258 shares, so the sale is small compared with his remaining stake.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/02/2026 - 04:41 PM EDT 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 CALIFORNIA 94107

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	05/29/2026		S(1)		15,028	D	$16.96	1,073,258	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	06/02/2026
	** 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.
* Form 4: SEC 1474 (03-26)