Fastly (NYSE: FSLY) CEO sells 13,244 shares to cover RSU taxes

Rhea-AI Filing Summary

Fastly, Inc. director and CEO Charles Lacey Compton III reported an open-market sale of 13,244 shares of Class A common stock. The shares were sold at a weighted average price of $20.30 per share, with individual trade prices ranging from $19.92 to $20.31.

According to the filing, the sale was made to satisfy tax obligations arising from the vesting of previously granted restricted stock units. After this transaction, Compton directly holds 949,037 shares of Fastly Class A common stock.

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).

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)
03/03/2026

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	03/03/2026		S(1)		13,244	D	$20.3(2)	949,037	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.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.92 to $20.31, inclusive. 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 (2) to this Form 4.

Remarks:

	/s/ Tara Seracka, Attorney-in-Fact	03/04/2026
	** 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.
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FAQ

What insider transaction did Fastly (FSLY) report for its CEO?

Fastly reported that CEO and director Charles Lacey Compton III sold 13,244 shares of Class A common stock. The transaction was an open-market sale on March 3, 2026, primarily to cover tax obligations from vesting restricted stock units.

At what price did the Fastly (FSLY) CEO sell his shares?

The Fastly CEO’s 13,244 shares were sold at a weighted average price of $20.30 per share. Individual transaction prices ranged from $19.92 to $20.31, as disclosed, with the executive offering to provide detailed trade breakdowns upon request.

Why did the Fastly (FSLY) CEO sell 13,244 shares?

The CEO sold 13,244 Fastly shares to satisfy tax obligations tied to vesting restricted stock units. This type of sale is commonly used to cover withholding taxes when equity awards convert into shares upon vesting for an executive.

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

After the reported transaction, Fastly CEO Charles Lacey Compton III directly owns 949,037 shares of Class A common stock. This remaining stake reflects his continuing equity interest in the company following the tax-related share sale.

Was the Fastly (FSLY) CEO’s transaction a buy or a sell?

The transaction was a sale of Fastly shares by the CEO, classified as an open-market sale under code “S.” The filing also notes the sale’s purpose was to cover tax obligations created by the vesting of restricted stock units.