F5 executive plans sale of 204 shares of stock

F5, INC. executive John Maddison filed a Rule 144 notice to sell 204 FFIV shares, following a prior 1,000-share 10b5-1 sale in August 2026.

Rhea-AI Filing Summary

F5, INC. (FFIV) executive John Maddison filed a notice of proposed sale of company stock under Rule 144. The filing covers 204 shares of common stock to be sold through Morgan Stanley Smith Barney LLC on NASDAQ, with an indicated value of $83,988.84 as of September 14, 2026.

The shares derive from Restricted Stock Units that became available on August 1, 2026. The notice also reports a prior Rule 10b5-1 sale of 1,000 shares of F5 common stock on August 3, 2026 for $405,852.80.

Key Figures

Shares proposed for Rule 144 sale: 204 shares Indicated value of proposed sale: $83,988.84 Shares sold in prior 3 months: 1,000 shares +3 more

6 metrics

Shares proposed for Rule 144 sale 204 shares Common stock to be sold for account of John Maddison

Indicated value of proposed sale $83,988.84 Aggregate value of 204 shares as of September 14, 2026

Shares sold in prior 3 months 1,000 shares 10b5-1 sale on August 3, 2026

Value of prior 10b5-1 sale $405,852.80 Common stock sale on August 3, 2026

Acquisition date of RSU-related shares August 1, 2026 Restricted Stock Units underlying shares to be sold

Trading market NASDAQ Planned venue for sale of F5, INC. common stock

Key Terms

Rule 144, Restricted Stock Units, 10b5-1

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 Stock Units financial

"Common | 08/01/2026 | Restricted Stock Units | Issuer"

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

"10b5-1 Sales for JOHN MADDISON"

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 did F5, INC. (FFIV) disclose in this Form 144 filing?

The filing shows John Maddison intends to sell 204 shares of F5, INC. common stock under Rule 144, with an indicated value of $83,988.84, through Morgan Stanley Smith Barney LLC on NASDAQ as of September 14, 2026.

How many FFIV shares are covered by John Maddison’s planned Rule 144 sale?

The notice covers a planned sale of 204 shares of F5, INC. common stock. These shares are tied to Restricted Stock Units that became available on August 1, 2026 and are to be sold through Morgan Stanley Smith Barney LLC.

What value does the Form 144 assign to the FFIV shares to be sold?

The Form 144 lists an indicated value of $83,988.84 for the 204 shares of F5, INC. common stock proposed for sale as of September 14, 2026. This figure reflects the aggregate value reported in the notice.

What prior FFIV stock sales by John Maddison are reported in the last three months?

The filing reports a 10b5-1 sale on August 3, 2026 of 1,000 shares of F5, INC. common stock for $405,852.80. This transaction is disclosed under securities sold during the past three months.

What is the source of the FFIV shares John Maddison plans to sell?

The Form 144 states the 204 shares of F5, INC. common stock to be sold on account of John Maddison are associated with Restricted Stock Units, with the acquisition date listed as August 1, 2026 and the issuer shown as F5, INC.

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

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Available on EDGAR 09/14/2026 - 04:44 PM Accepted by SEC EDGAR 09/14/2026 - 04:40 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	0002046054
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	JOHN MADDISON
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	204	83988.84	56627182	09/14/2026	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	08/01/2026	Restricted Stock Units	Issuer			204	08/01/2026	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 JOHN MADDISON 801 5th Avenue Seattle WA 98104	Common	08/03/2026	1000	405852.80

144: Remarks and Signature

Remarks
Date of Notice	09/14/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/14/2026
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/ John Maddison
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)