F5 (FFIV) EVP Thomas Dean Fountain details RSU vesting and share sale

Rhea-AI Filing Summary

F5, Inc. executive Thomas Dean Fountain reported equity transactions in company stock. On February 1, 2026, he acquired 2,699 shares of Common Stock at $0 per share following the vesting of previously granted service-based Restricted Stock Units. On the same date, he disposed of 1,402 shares of Common Stock at $275.61 per share, leaving him with 9,357 shares of Common Stock held directly.

The filing also shows multiple Restricted Stock Unit awards, each representing the right to receive one share of F5 Common Stock on vesting. These RSUs vest in twelve equal quarterly installments beginning on various dates in 2024, 2025, and 2026, subject to his continued service with the company.

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

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

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)
02/01/2026

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	02/01/2026		M		2,699(1)	A	$0	10,759	D
Common Stock	02/01/2026		F		1,402	D	$275.61	9,357	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
Restricted Stock Unit(2)	$0	02/01/2026		M			950	(3)	(4)	Common Stock	950	$0	6,654	D
Restricted Stock Unit(2)	$0	02/01/2026		M			707	(5)	(4)	Common Stock	707	$0	7,786	D
Restricted Stock Unit(2)	$0	02/01/2026		M			1,042	(6)	(4)	Common Stock	1,042	$0	3,127	D

Explanation of Responses:

1. Shares acquired upon the vesting of November 1, 2023, November 1, 2024, and November 3, 2025 awards of service-based Restricted Stock Units.

2. Each Restricted Stock Unit represents a contingent right to receive one share of F5, Inc. Common Stock on the vest date.

3. This November 1, 2024 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2025.

4. If the reporting person continues to provide services to the Company through the vest date, the corresponding number of shares of Common Stock of F5, Inc. will be issued to the reporting person on the vest date.

5. This November 3, 2025 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2026.

6. This November 1, 2023 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2024.

Remarks:

	/s/ Angelique M. Okeke by Power of Attorney	02/03/2026
	** 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).
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FAQ

What did F5 (FFIV) EVP Thomas Dean Fountain report in this Form 4?

He reported equity transactions on February 1, 2026. He acquired 2,699 F5 Common Stock shares at $0 per share from vesting Restricted Stock Units and disposed of 1,402 shares at $275.61, ending with 9,357 shares held directly.

How many F5 (FFIV) shares does Thomas Dean Fountain own after the reported transactions?

After the transactions, he directly owns 9,357 shares of F5 Common Stock. This figure reflects the net result of acquiring 2,699 shares at $0 per share and disposing of 1,402 shares at $275.61 on February 1, 2026.

What was the price of the F5 (FFIV) shares disposed of by Thomas Dean Fountain?

He disposed of 1,402 shares of F5 Common Stock at a price of $275.61 per share. This disposition occurred on February 1, 2026 and is reported as transaction code "F" in the non-derivative securities table.

How were the 2,699 F5 (FFIV) shares acquired by Thomas Dean Fountain?

The 2,699 shares were acquired at $0 per share upon vesting of service-based Restricted Stock Units. These RSUs were granted on November 1, 2023, November 1, 2024, and November 3, 2025 and convert into F5 Common Stock on their vest dates.

What do Thomas Dean Fountain’s Restricted Stock Units in F5 (FFIV) represent?

Each Restricted Stock Unit represents a contingent right to receive one share of F5 Common Stock on the vest date. Shares are issued if he continues providing services to the company through the applicable vesting dates described in the award schedules.

How do the F5 (FFIV) Restricted Stock Unit awards for Thomas Dean Fountain vest over time?

The awards vest in twelve equal quarterly increments starting on specific dates. One award beginning February 1, 2024, another beginning February 1, 2025, and another beginning February 1, 2026, all subject to his continued service to F5 through each vest date.