[Form 4] F5, INC. Insider Trading Activity

Rhea-AI Filing Summary

F5, Inc. executive Thomas Dean Fountain reported routine equity compensation activity involving Restricted Stock Units (RSUs). On May 1, 2026, service-based RSU awards vested and were converted into 2,701 shares of F5 common stock through derivative exercises.

To cover tax obligations, 1,373 shares of common stock were disposed of via a tax-withholding transaction at $323.20 per share, rather than an open-market sale. After these transactions, Fountain directly held 9,388 shares of F5 common stock. Footnotes explain that the November 2023, November 2024, and November 2025 RSU awards continue to vest in twelve equal quarterly increments, with one share of common stock delivered for each unit that vests, so long as he remains in service.

Insider Trade Summary

2,701 shares exercised/converted

Mixed 5 txns

Insider FOUNTAIN THOMAS DEAN

Role EVP Global Services & Strategy

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit	951	$0.00	--
Exercise	Restricted Stock Unit	708	$0.00	--
Exercise	Restricted Stock Unit	1,042	$0.00	--
Exercise	Common Stock	2,701	$0.00	--
Tax Withholding	Common Stock	1,373	$323.20	$444K

Holdings After Transaction: Restricted Stock Unit — 5,703 shares (Direct, null); Common Stock — 10,761 shares (Direct, null)

Footnotes (1)

1. Shares acquired upon the vesting of the November 1, 2023, November 1, 2024, and November 3, 2025 awards of service-based Restricted Stock Units. Each Restricted Stock Unit represents a contingent right to receive one share of F5, Inc. Common Stock on the vest date. This November 1, 2024 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2025. 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. This November 3, 2025 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2026. This November 1, 2023 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2024.

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).

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 WASHINGTON 98104

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026

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

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

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

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	05/01/2026		M		2,701(1)	A	$0	10,761	D
Common Stock	05/01/2026		F		1,373	D	$323.2	9,388	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	05/01/2026		M			951	(3)	(4)	Common Stock	951	$0	5,703	D
Restricted Stock Unit(2)	$0	05/01/2026		M			708	(5)	(4)	Common Stock	708	$0	7,078	D
Restricted Stock Unit(2)	$0	05/01/2026		M			1,042	(6)	(4)	Common Stock	1,042	$0	2,085	D

Explanation of Responses:

1. Shares acquired upon the vesting of the 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	05/05/2026
	** 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.
* Form 4: SEC 1474 (03-26)