Insider sells 49,350 FSLY shares in 10b5-1 trade

Filer reported multiple sales of Common Stock under Rule 144/10b5-1 arrangements.

Rhea-AI Filing Summary

Filer reported multiple sales of Common Stock under Rule 144/10b5-1 arrangements. The excerpt lists several dispositions by Charles L. Compton III, including sales of 49,350 shares on 03/11/2026 for $1,233,750.00 and other transactions in March and February 2026. The filing also references 11,042 Restricted Stock Units dated 04/15/2025.

Key Figures

03/11/2026 sale: 49,350 shares 03/05/2026 sale: 36,694 shares 03/04/2026 sales (two entries): 13,982 shares; 59,224 shares +2 more

5 metrics

03/11/2026 sale 49,350 shares 03/11/2026 reported sale for $1,233,750.00

03/05/2026 sale 36,694 shares 03/05/2026 reported sale for $759,066.76

03/04/2026 sales (two entries) 13,982 shares; 59,224 shares 03/04/2026 reported dispositions with proceeds $285,371.22 and $1,247,257.44

03/03/2026 sale 13,244 shares 03/03/2026 reported sale for $268,853.20

Restricted Stock Units 11,042 RSUs Restricted Stock Units dated 04/15/2025

Key Terms

10b5-1, Restricted Stock Units, Issuer

3 terms

10b5-1 regulatory

"10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Restricted Stock Units financial

"Common | 04/15/2025 | 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.

Issuer legal

"Restricted Stock Units | Issuer"

FAQ

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

What does the Form 144 for FSLY show about insider sales?

It reports multiple insider sales executed under 10b5-1 plans. The excerpt lists transactions by Charles L. Compton III on dates in Feb–Mar 2026, with individual sale amounts and gross proceeds recorded for each trade.

How many shares did Charles L. Compton III sell on 03/11/2026 in the FSLY filing?

He sold 49,350 shares on 03/11/2026. The filing shows a corresponding dollar amount of $1,233,750.00 for that transaction, reported as a 10b5-1 sale.

Are these sales labeled as 10b5-1 transactions in the FSLY Form 144?

Yes. Several entries are explicitly labeled as 10b5-1 Sales. The excerpt identifies specific trades marked "10b5-1 Sales for CHARLES L COMPTON III" across February and March 2026.

Does the filing list any Restricted Stock Units for FSLY?

Yes, the excerpt references 11,042 Restricted Stock Units dated 04/15/2025. The line pairs the RSU count with the issuer and an earlier date, indicating awards rather than open-market trades.

What proceeds are shown for the March 5, 2026 sale in the Form 144?

The 03/05/2026 sale lists 36,694 shares for $759,066.76. That per-transaction proceeds figure appears alongside the share count and the 10b5-1 designation in the excerpt.

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

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Accepted by SEC EDGAR 04/16/2026 - 04:13 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	11042	258161.96	151800000	04/16/2026	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	04/15/2025	Restricted Stock Units	Issuer			11042	04/15/2025	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
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	03/11/2026	49350	1233750.00
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	03/05/2026	36694	759066.76
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	03/04/2026	13982	285371.22
CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	03/04/2026	59224	1247257.44
CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	03/03/2026	13244	268853.20
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	02/19/2026	14797	279404.35
CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	02/18/2026	12916	226417.48
10b5-1 Sales for CHARLES L COMPTON III 475 Brannan Street, Suite 300 San Francisco CA 94107	Common	01/20/2026	4638	40861.04

144: Remarks and Signature

Remarks
Date of Notice	04/16/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/27/2025
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)