Fastly (FSLY) CEO Compton reports two small stock sales in Form 4

Rhea-AI Filing Summary

Fastly, Inc. CEO Charles Lacey Compton III reported two small open-market sales of Class A common stock. On January 16, 2026, he sold 9,044 shares at a weighted average price of $9.07, with the filing stating the shares were sold to satisfy tax obligations arising from the vesting of previously granted restricted stock units. On January 20, 2026, he sold an additional 4,638 shares at a weighted average price of $8.81, in a transaction effected under a Rule 10b5-1 trading plan adopted on August 27, 2025. Following these sales, he directly beneficially owned 612,232 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

OMB APPROVAL

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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^*

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)
01/16/2026

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	01/16/2026		S(1)		9,044	D	$9.07(2)	616,870	D
Class A Common Stock	01/20/2026		S(3)		4,638	D	$8.81(4)	612,232	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 $9.07 to $9.08. 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 (2) and (4) to this Form 4.

3. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 27, 2025.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.75 to $8.93, inclusive.

Remarks:

	/s/ Tara Seracka, Attorney-in-Fact	01/21/2026
	** 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.

FAQ

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

The CEO of Fastly, Inc., Charles Lacey Compton III, reported two sales of Class A common stock: 9,044 shares on January 16, 2026 and 4,638 shares on January 20, 2026.

At what prices did the Fastly (FSLY) CEO sell shares in this Form 4?

The January 16, 2026 sale of 9,044 shares had a weighted average price of $9.07, and the January 20, 2026 sale of 4,638 shares had a weighted average price of $8.81.

Why were some Fastly (FSLY) CEO shares sold according to the filing?

The filing explains that the 9,044 shares sold on January 16, 2026 were sold to satisfy tax obligations related to the vesting of previously granted restricted stock units.

Was a Rule 10b5-1 trading plan used for the Fastly (FSLY) CEO share sale?

Yes. The filing states that the January 20, 2026 sale of 4,638 shares was effected under a Rule 10b5-1 trading plan adopted on August 27, 2025.

How many Fastly (FSLY) shares does the CEO own after these transactions?

After the reported sales, Charles Lacey Compton III directly beneficially owned 612,232 shares of Fastly Class A common stock.

Does the Fastly (FSLY) Form 4 indicate direct or indirect ownership for these shares?

The transactions and the 612,232 shares reported as owned following the transactions are listed as directly owned by the CEO.