Fastly: Charles L. Compton III proposes $203K sale

The notice lists 159,300,000 Fastly common shares outstanding as of October 19, 2026, alongside the proposed sale.

Rhea-AI Filing Summary

Fastly, Inc. (FSLY) is named as issuer in a notice stating that Charles L. Compton III proposes to sell 9,016 common shares through Morgan Stanley Smith Barney LLC on October 19, 2026, with an aggregate market value of $202,589.52. The shares are listed as acquired from Fastly on October 15, 2026, through restricted stock units. The notice also lists prior common-stock sales, including entries labeled as 10b5-1 sales.

Key Figures

Common shares proposed for sale: 9,016 shares Aggregate market value: $202,589.52 Common shares outstanding: 159,300,000 shares +2 more

5 metrics

Common shares proposed for sale 9,016 shares Proposed sale date: October 19, 2026

Aggregate market value $202,589.52 Proposed sale

Common shares outstanding 159,300,000 shares As of October 19, 2026

Prior sale 50,392 shares September 14, 2026; labeled a 10b5-1 sale

Prior sale 55,579 shares September 1, 2026; labeled a 10b5-1 sale

Key Terms

Restricted Stock Units, 10b5-1 Sales, Rule 144

3 terms

Restricted Stock Units financial

"Restricted Stock Units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

10b5-1 Sales regulatory

"10b5-1 Sales for CHARLES L COMPTON III"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many Fastly (FSLY) shares does Charles L. Compton III propose to sell?

Charles L. Compton III proposes to sell 9,016 common shares on October 19, 2026, with an aggregate market value of $202,589.52. Morgan Stanley Smith Barney LLC is listed in connection with the proposed sale.

How did Charles L. Compton III acquire the Fastly shares proposed for sale?

The 9,016 common shares are listed as acquired from Fastly, Inc. on October 15, 2026, through restricted stock units.

What prior Fastly (FSLY) sales did Charles L. Compton III report?

The notice lists sales of 50,392 shares on September 14, 2026, and 55,579 shares on September 1, 2026; both entries are labeled 10b5-1 sales. It also lists sales on October 15, September 8, September 2, August 31, August 19, August 18, and August 4, 2026.

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

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Available on EDGAR 10/19/2026 - 04:23 PM EDT Accepted by SEC EDGAR 10/19/2026 - 04:23 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002074428
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	FASTLY, INC.
SEC File Number	001-38897
Address of Issuer	475 Brannan Street, Suite 300 San Francisco CALIFORNIA 94107
Phone	8444327859
Name of Person for Whose Account the Securities are To Be Sold	Charles L. Compton III
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	9016	202589.52	159300000	10/19/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	10/15/2026	Restricted Stock Units	Issuer			9016	10/15/2026	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	10/15/2026	11433	284677.13
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	09/14/2026	50392	1256399.81
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	09/08/2026	2436	51716.28
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	09/02/2026	9458	193111.93
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	09/01/2026	55579	1188669.26
CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	08/31/2026	15028	345644.00
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	08/19/2026	11198	276457.18
CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	08/18/2026	34552	988336.04
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	08/04/2026	14868	371700.00

144: Remarks and Signature

Remarks
Date of Notice	10/19/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/11/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Charles L. Compton III
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)