F5 (FFIV) EVP Thomas Fountain sells 1,297 shares in Rule 10b5-1 trade

Rhea-AI Filing Summary

F5, Inc. executive Thomas Dean Fountain reported an open-market sale of company stock. On 02/10/2026, he sold 1,297 shares of F5 common stock at a price of $278.32 per share under a pre-arranged Rule 10b5-1 trading plan dated 10/29/2025. After this sale, he directly owned 8,060 F5 shares.

Insider Trade Summary

Net Seller: 1,297 shares ($360,981)

Net Sell 1 txn

Insider FOUNTAIN THOMAS DEAN

Role EVP Global Services & Strategy

Sold 1,297 shs ($361K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,297	$278.32	$361K

Holdings After Transaction: Common Stock — 8,060 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

FOUNTAIN THOMAS DEAN

(Last) (First) (Middle)

C/O F5, INC.

801 5TH AVENUE

(Street)

SEATTLE WA 98104

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
F5, INC. [ FFIV ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP Global Services & Strategy

3. Date of Earliest Transaction (Month/Day/Year)
02/10/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/10/2026		S		1,297(1)	D	$278.32	8,060	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This transaction was executed pursuant to a Rule 10b5-1 trading plan dated 10/29/2025.

Remarks:

	/s/ Angelique M. Okeke by Power of Attorney	02/11/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did F5 (FFIV) report for Thomas Dean Fountain?

F5 reported that executive Thomas Dean Fountain sold 1,297 shares of common stock. The sale occurred on 02/10/2026 at a price of $278.32 per share in an open-market transaction, as disclosed in the Form 4 filing.

At what price did Thomas Dean Fountain sell F5 (FFIV) shares?

Thomas Dean Fountain sold his F5 shares at $278.32 per share. The Form 4 notes an open-market sale of 1,297 common shares at this price, executed under a Rule 10b5-1 trading plan dated 10/29/2025.

How many F5 (FFIV) shares does Thomas Dean Fountain hold after the reported sale?

After the reported sale, Thomas Dean Fountain beneficially owns 8,060 F5 common shares directly. This figure reflects his holdings following the 1,297-share open-market sale reported for the transaction dated 02/10/2026 on Form 4.

What is Thomas Dean Fountain’s role at F5 (FFIV) in this Form 4?

In this Form 4, Thomas Dean Fountain is identified as an officer of F5, serving as EVP Global Services & Strategy. He is not listed as a director or 10% owner, but as a senior executive reporting this stock transaction.

Was the F5 (FFIV) insider sale by Thomas Dean Fountain under a Rule 10b5-1 plan?

Yes. The Form 4 footnote states the sale was executed under a Rule 10b5-1 trading plan. That plan was dated 10/29/2025, indicating the trade followed a pre-established schedule rather than a discretionary same-day decision.

What type of transaction code is shown in the F5 (FFIV) Form 4 for Thomas Dean Fountain?

The Form 4 lists transaction code “S” for Thomas Dean Fountain’s activity. Code S indicates a sale of non-derivative securities, here describing his open-market sale of 1,297 shares of F5 common stock at $278.32 per share.