Fastly (NYSE: FSLY) CEO sells 49,350 shares under 10b5-1 plan

Rhea-AI Filing Summary

Fastly, Inc.’s CEO, Charles Lacey Compton III, reported an open-market sale of 49,350 shares of Class A common stock at $25.00 per share. The transaction left him holding 1,163,428 Fastly shares directly.

According to a footnote, this sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on August 27, 2025, indicating the trades were scheduled in advance rather than timed discretionarily.

Insider Trade Summary 10b5-1

Net Seller: 49,350 shares ($1,233,750)

Net Sell 1 txn

Insider Compton Charles Lacey III

Role CEO

Sold 49,350 shs ($1.23M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	49,350	$25.00	$1.23M

Holdings After Transaction: Class A Common Stock — 1,163,428 shares (Direct)

Footnotes (1)

1. [object Object]

Form 4 Insider Transactions: What Each Field Means →

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).

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)
03/11/2026

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	03/11/2026		S(1)		49,350	D	$25	1,163,428	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. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 27, 2025.

Remarks:

	/s/ Tara Seracka, Attorney-in-Fact	03/13/2026
	** 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 transaction did Fastly (FSLY) disclose for its CEO?

Fastly reported that CEO Charles Lacey Compton III sold 49,350 shares of Class A common stock. The sale was executed in the open market at $25.00 per share and was made under a pre-arranged Rule 10b5-1 trading plan.

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

The CEO’s reported sale was executed at $25.00 per share. This price applies to the 49,350 shares of Fastly Class A common stock sold in an open-market transaction on March 11, 2026, under a Rule 10b5-1 trading plan.

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

After the reported transaction, Fastly’s CEO holds 1,163,428 shares of Class A common stock directly. This figure reflects his position immediately following the 49,350-share open-market sale disclosed in the Form 4 filing.

Was the Fastly (FSLY) CEO’s share sale under a 10b5-1 trading plan?

Yes. A footnote states the sales were made under a Rule 10b5-1 trading plan adopted on August 27, 2025. Such plans pre-schedule trades, indicating the timing was set in advance rather than chosen reactively.

What type of transaction did Fastly (FSLY) CEO Charles Compton report?

He reported an open-market sale of Fastly Class A common stock, coded “S” on the Form 4. The transaction involved 49,350 shares at $25.00 each, resulting in updated direct ownership of 1,163,428 shares.