Form 144: Proposed sale of 1,328 RSUs (FFIV)

Morgan Stanley Smith Barney LLC submitted a Form 144 disclosing a proposed sale of 1,328 Restricted Stock Units of Common Stock dated 05/01/2026.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC submitted a Form 144 disclosing a proposed sale of 1,328 Restricted Stock Units of Common Stock dated 05/01/2026. The filing also lists prior 10b5-1 sales by Thomas D. Fountain of 1,297 shares on 02/10/2026 valued at $360,981.04.

Key Figures

Proposed RSUs to be sold: 1,328 shares Prior 10b5-1 sale: 1,297 shares Reported value of prior sale: $360,981.04 +1 more

4 metrics

Proposed RSUs to be sold 1,328 shares Restricted Stock Units dated 05/01/2026

Prior 10b5-1 sale 1,297 shares Sale by Thomas D. Fountain on 02/10/2026

Reported value of prior sale $360,981.04 Value tied to 1,297-share 10b5-1 sale on 02/10/2026

Market listed NASDAQ Market reference in filing dated 05/05/2026

Key Terms

Form 144, Restricted Stock Units, 10b5-1

3 terms

Form 144 regulatory

"submitted a Form 144 disclosing a proposed sale"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Units financial

"1,328 Restricted Stock Units of Common Stock dated 05/01/2026"

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 regulatory

"lists prior 10b5-1 sales by Thomas D. Fountain"

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.

FAQ

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

What does the FFIV Form 144 disclose about the securities to be sold?

The Form 144 shows a proposed sale of 1,328 Restricted Stock Units of Common Stock dated 05/01/2026. It lists the security type as Restricted Stock Units and the filing lists NASDAQ as the market on 05/05/2026.

Who executed recent 10b5-1 sales related to this filing (FFIV)?

The filing records 10b5-1 sales by Thomas D. Fountain of 1,297 shares on 02/10/2026, with a reported value of $360,981.04 during the prior three months.

Which broker or intermediary is named on the Form 144 for FFIV?

The Form 144 lists Morgan Stanley Smith Barney LLC (Executive Financial Services, 1 New York Plaza) as the filer associated with the proposed sale of Common Stock and Restricted Stock Units.

What dates appear on the FFIV excerpt and what do they indicate?

Key dates include 05/01/2026 (date attached to the 1,328 RSUs), 02/10/2026 (10b5-1 sales of 1,297 shares), and 05/05/2026 (market listed as NASDAQ in the filing).

How much value was reported for the past 10b5-1 sales in the FFIV filing?

The excerpt reports a value of $360,981.04 tied to the 1,297-share 10b5-1 sale executed on 02/10/2026 by Thomas D. Fountain, as shown in the filing.

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

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Accepted by SEC EDGAR 05/05/2026 - 04:32 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	0001728330
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	F5, INC.
SEC File Number	000-26041
Address of Issuer	801 5th Avenue Seattle WASHINGTON 98104
Phone	2062725555
Name of Person for Whose Account the Securities are To Be Sold	THOMAS FOUNTAIN
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	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	1328	438147.04	56519273	05/05/2026	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	05/01/2026	Restricted Stock Units	Issuer			1328	05/01/2026	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
10b5-1 Sales for THOMAS D FOUNTAIN 801 5th Avenue Seattle WA 98104	Common	02/10/2026	1297	360981.04

144: Remarks and Signature

Remarks
Date of Notice	05/05/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	10/29/2025
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/ Thomas D. Fountain
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)