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Fastly (NYSE: FSLY) CEO logs 9,313-share open-market stock sale

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

Rhea-AI Filing Summary

Fastly, Inc. CEO Charles Lacey Compton III reported selling 9,313 shares of Class A Common Stock in open-market transactions. The sales took place on June 3, 2026 at weighted average prices around $20–$22 per share across three separate trades.

The transactions were executed under a pre-arranged Rule 10b5-1 trading plan adopted on August 27, 2025, indicating they were scheduled in advance rather than timed discretionarily. After these trades, Compton still holds more than one million Fastly shares, so the sale represents a small portion of his overall stake.

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Insights

Fastly’s CEO made a small, pre-planned stock sale under a Rule 10b5-1 plan.

Fastly, Inc. CEO Charles Lacey Compton III sold a total of 9,313 shares of Class A Common Stock in three open-market transactions on June 3, 2026. Reported weighted average prices were around $20–$22 per share.

The filing states these sales were made pursuant to a Rule 10b5-1 trading plan adopted on August 27, 2025, meaning they were pre-scheduled. Compton retains more than one million shares after the sale, so this is a relatively small trim of his position.

Because the transactions are both pre-planned and small relative to his overall holdings, they look like routine liquidity rather than a major signal about Fastly’s prospects. Subsequent company filings may provide additional context on any future trading under this plan.

Insider Compton Charles Lacey III
Role CEO
Sold 9,313 shs ($194K)
Type Security Shares Price Value
Sale Class A Common Stock 3,482 $20.17 $70K
Sale Class A Common Stock 5,746 $21.15 $122K
Sale Class A Common Stock 85 $21.85 $2K
Holdings After Transaction: Class A Common Stock — 1,069,776 shares (Direct, null)
Footnotes (1)
  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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.79 to $20.37, 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 ranges set forth in footnotes (2) and (3) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.83 to $21.62, inclusive.
Shares sold 9,313 shares Total Class A Common Stock sold on June 3, 2026
Sale price 1 $21.85/share Weighted average price for 85 shares sold
Sale price 2 $21.15/share Weighted average price for 5,746 shares sold
Sale price 3 $20.17/share Weighted average price for 3,482 shares sold
Price range block 1 $19.79–$20.37 Range of prices for one set of trades in sale group
Price range block 2 $20.83–$21.62 Range of prices for another set of trades
Net shares sold 9,313 shares Net buy/sell shares across all reported transactions
Rule 10b5-1 trading plan regulatory
"The sales reported in this Form 4 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.
weighted average price financial
"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
open-market sale financial
"transaction_action": "open-market sale", "transaction_code_description": "Sale in open market or private transaction""
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", "transaction_date": "2026-06-03T00:00:00.000Z""
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
"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"
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.
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Form 4 Insider Transactions: What Each Field Means →
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)
06/03/2026		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 Stock06/03/2026S(1)3,482D$20.17(2)1,069,776D
Class A Common Stock06/03/2026S(1)5,746D$21.15(3)1,064,030D
Class A Common Stock06/03/2026S(1)85D$21.851,063,945D
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.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.79 to $20.37, 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 ranges set forth in footnotes (2) and (3) to this Form 4.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.83 to $21.62, inclusive.
Remarks:
/s/ Tara Seracka, Attorney-in-Fact06/05/2026
** 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

FAQ

How many Fastly (FSLY) shares did the CEO sell in this Form 4?

The CEO sold a total of 9,313 shares of Fastly Class A Common Stock. These were executed in three open-market transactions on June 3, 2026, according to the Form 4 insider trading report.

At what prices did Fastly (FSLY) CEO Charles Lacey Compton III sell shares?

The reported weighted average prices were $21.85, $21.15, and $20.17 per share. Footnotes note underlying trades ranged from $19.79–$20.37 and $20.83–$21.62, all completed on June 3, 2026.

Were the Fastly (FSLY) CEO’s June 3, 2026 stock sales pre-planned?

Yes. The filing states the sales were made under a Rule 10b5-1 trading plan adopted on August 27, 2025. Such plans pre-schedule trades, reducing the significance of timing as a signal of insider sentiment.

What type of transactions did the Fastly (FSLY) Form 4 report?

The Form 4 reports three open-market sales of Fastly Class A Common Stock. Each transaction is coded “S” for sale and described as an open-market or private transaction, with no option exercises or derivative transactions included.

Did Fastly (FSLY) CEO retain a large stake after the reported stock sales?

Yes. After the June 3, 2026 sales, the CEO still holds more than one million shares of Fastly. This indicates the 9,313 shares sold represent only a small portion of his overall ownership position.