Fastly (NYSE: FSLY) insider plans 14,938-share Rule 144 sale

Rhea-AI Filing Summary

Fastly, Inc. (FSLY) has a notice under Rule 144 for potential sales of its common stock by Charles L. Compton III. The notice covers up to 14,938 restricted common shares to be sold through E*TRADE Securities LLC, with a proposed sale date of August 28, 2026. The filing also lists multiple prior Class A common stock sales by Compton between May and August 2026, each with specified share counts and dollar proceeds.

Key Figures

Shares to be sold under Rule 144: 14,938 shares of common stock Broker for proposed sale: E*TRADE Securities LLC Proposed sale date: 08/28/2026 +3 more

6 metrics

Shares to be sold under Rule 144 14,938 shares of common stock Proposed sale for Charles L. Compton III with date 08/28/2026

Broker for proposed sale E*TRADE Securities LLC Listed as broker for 14,938 common shares

Proposed sale date 08/28/2026 Date for Rule 144 sale of 14,938 restricted common shares

Past sale on 05/29/2026 15,028 shares; $254,874.88 Class A common stock sale by Charles L. Compton III

Past sale on 08/18/2026 34,552 shares; $988,187.20 Class A common stock sale by Charles L. Compton III

Past sale on 08/04/2026 14,868 shares; $371,700.00 Class A common stock sale by Charles L. Compton III

Key Terms

Rule 144, restricted, Attorney-in-Fact

3 terms

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.

restricted regulatory

"COMMON | 08/28/2026 | RESTRICTED | FASTLY, INC."

Attorney-in-Fact regulatory

"Signature | /s/ Tara Seracka, Attorney-in-Fact for Charles L. Compton III"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does the Form 144 filing for Fastly, Inc. (FSLY) disclose?

It discloses that Charles L. Compton III has filed a notice under Rule 144 to potentially sell 14,938 restricted common shares of Fastly, Inc. through E*TRADE Securities LLC, with a proposed sale date of August 28, 2026.

How many Fastly (FSLY) shares are proposed to be sold under this Form 144?

The notice covers a proposed sale of 14,938 restricted common shares of Fastly, Inc. common stock, with a proposed sale date of August 28, 2026 and E*TRADE Securities LLC listed as the broker.

Who is selling Fastly (FSLY) shares according to this Form 144?

The selling person is Charles L. Compton III, for whose account the Fastly, Inc. common stock is to be sold. The filing identifies him as the person on whose behalf the Rule 144 notice is being made.

What prior Fastly (FSLY) stock sales does this Form 144 list?

The filing lists multiple prior Class A common stock sales by Charles L. Compton III from May 29, 2026 through August 19, 2026, each showing the date, number of shares sold, and total dollar proceeds for those transactions.

Which broker is named for the proposed Fastly (FSLY) Rule 144 sale?

The proposed sale of 14,938 Fastly common shares is to be executed through E*TRADE Securities LLC, which is listed in the securities information section of the Form 144.

Who signed the Fastly (FSLY) Form 144 notice?

The notice is signed by /s/ Tara Seracka as Attorney-in-Fact for Charles L. Compton III on August 27, 2026, indicating she signed under a power of attorney on his behalf.

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

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Available on EDGAR 08/27/2026 - 05:04 PM Accepted by SEC EDGAR 08/27/2026 - 05:03 PM 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
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	E*TRADE SECURITIES LLC. 4005 Windward Plaza Dr. Alpharetta GA 30005	14938	339242	160593098	08/31/2026	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	08/28/2026	RESTRICTED	FASTLY, INC.			14938	08/28/2026	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	Class A Common Stock	05/29/2026	15028	254874.88
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	06/03/2026	3482	70231.94
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	06/03/2026	5746	121527.9
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	06/03/2026	85	1857.25
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	07/16/2026	11412	235657.8
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	07/17/2026	2714	55664.14
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	07/17/2026	4204	88704.4
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	07/17/2026	155	3394.5
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	08/04/2026	14868	371700
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	08/18/2026	34552	988187.2
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	08/19/2026	5098	122759.84
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	08/19/2026	5400	135432
Charles L. Compton III 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	08/19/2026	700	18235

144: Remarks and Signature

Remarks
Date of Notice	08/27/2026
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/ Tara Seracka, Attorney-in-Fact for Charles L. Compton III
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)