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Fastly CEO (NASDAQ: FSLY) sells 14,868 shares in 10b5-1 plan

Filing Impact
(High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Fastly, Inc. CEO Charles Lacey Compton III sold 14,868 shares of Class A Common Stock on August 4, 2026 at $25.00 per share. The sale was effected under a Rule 10b5-1 trading plan adopted on August 27, 2025, leaving him with 1,030,592 directly held shares.

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Insider Compton Charles Lacey III
Role CEO
Sold 14,868 shs ($372K)
Type Security Shares Price Value
Sale Class A Common Stock F1 14,868 $25.00 $372K
Holdings After Transaction: Class A Common Stock — 1,030,592 shares (Direct)
Footnotes (1)
  1. F1. 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.
Shares sold 14,868 shares Class A Common Stock sold on 2026-08-04
Sale price per share $25.00 Price per share for the reported sale
Shares held after transaction 1,030,592 shares Direct holdings after the August 4, 2026 sale
10b5-1 plan adoption date August 27, 2025 Date CEO adopted Rule 10b5-1 trading plan
Rule 10b5-1 trading plan regulatory
"sales were effected pursuant to a Rule 10b5-1 trading plan adopted"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Class A Common Stock financial
"security title is Class A Common Stock for this transaction"
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.
open market or private transaction market
"Sale in open market or private transaction as coded"

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

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FAQ

What insider transaction did Fastly (FSLY) report for its CEO?
Fastly reported that CEO Charles Lacey Compton III sold 14,868 shares of Class A Common Stock on August 4, 2026 at $25.00 per share. The transaction is classified as a sale in open market or private transaction.

How many Fastly (FSLY) shares does the CEO hold after this sale?
After the reported sale, Fastly CEO Charles Lacey Compton III directly holds 1,030,592 shares of the company’s Class A Common Stock. This post-transaction holding reflects his remaining direct equity position following the August 4, 2026 trade.

Was the Fastly (FSLY) CEO trade made under a Rule 10b5-1 plan?
Yes. The CEO’s sale of 14,868 shares was effected pursuant to a Rule 10b5-1 trading plan that he adopted on August 27, 2025. The filing’s Rule 10b5-1 checkbox is also affirmatively marked for this transaction.

What was the approximate value of Fastly (FSLY) shares sold by the CEO?
Based on 14,868 shares sold at $25.00 per share, the CEO’s gross sale value is approximately $371,700. This figure is a straightforward multiplication of the reported share count and per-share sale price.

What type of security did the Fastly (FSLY) CEO sell?
The transaction involves Class A Common Stock of Fastly, Inc. It is reported as a non-derivative security transaction, meaning it reflects a direct sale of common shares rather than the exercise or conversion of options or other derivative securities.
SEC Form 4
FORM 4UNITED 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 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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/04/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Class A Common Stock08/04/2026S(1)14,868D$251,030,592D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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-Fact08/06/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR