F5 (FFIV) EVP Thomas Fountain sells 1,328 shares under 10b5-1 plan

Filing Impact

(Moderate)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

F5, INC. executive Thomas Dean Fountain, EVP Global Services & Strategy, completed an open-market sale of 1,328 shares of Common Stock on May 5, 2026 at $330.58 per share. The transaction was made under a pre-arranged Rule 10b5-1 trading plan dated October 29, 2025. After this sale, he directly holds 8,060 shares.

Insider Trade Summary 10b5-1

Net Seller: 1,328 shares ($439,010)

Net Sell 1 txn

Insider FOUNTAIN THOMAS DEAN

Role EVP Global Services & Strategy

Sold 1,328 shs ($439K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,328	$330.58	$439K

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

Footnotes (1)

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Key Figures

Shares sold: 1,328 shares Sale price per share: $330.58 per share Shares held after sale: 8,060 shares +2 more

5 metrics

Shares sold 1,328 shares Open-market sale on May 5, 2026

Sale price per share $330.58 per share Common Stock transaction price

Shares held after sale 8,060 shares Direct ownership following transaction

Form type Form 4 Insider open-market sale disclosure

Trading plan date October 29, 2025 Rule 10b5-1 plan governing the sale

Key Terms

Rule 10b5-1 trading plan, open-market sale, Common Stock, Form 4

4 terms

Rule 10b5-1 trading plan regulatory

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

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Form 4 Insider Transactions: What Each Field Means →

05/07/2026 - 05:58 PM

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)
05/05/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/05/2026		S		1,328⁽¹⁾	D	$330.58	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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	05/07/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

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

F5 reported that EVP Global Services & Strategy Thomas Dean Fountain sold 1,328 shares of Common Stock. The shares were sold in an open-market transaction at $330.58 per share, and the trade was executed under a pre-arranged Rule 10b5-1 trading plan.

At what price were F5 (FFIV) shares sold in Thomas Fountain’s Form 4 filing?

The reported transaction shows Thomas Dean Fountain sold F5 Common Stock at $330.58 per share. This price applies to the 1,328 shares sold in the open market, as disclosed in the Form 4 insider trading report filed for the May 5, 2026 transaction.

How many F5 (FFIV) shares does Thomas Fountain hold after this Form 4 sale?

Following the reported sale, Thomas Dean Fountain directly holds 8,060 shares of F5 Common Stock. This post-transaction balance reflects his remaining direct ownership after selling 1,328 shares in the open market as disclosed in the Form 4 filing.

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

Yes. The filing states the transaction was executed pursuant to a Rule 10b5-1 trading plan dated October 29, 2025. Such pre-arranged plans allow insiders to schedule trades in advance, helping separate routine portfolio moves from discretionary timing decisions.

What role does Thomas Dean Fountain hold at F5 (FFIV) in this Form 4?

In the Form 4, Thomas Dean Fountain is identified as an officer of F5, serving as EVP Global Services & Strategy. His position means this reported open-market sale of 1,328 shares represents trading activity by a senior executive of the company.

What type of security did Thomas Fountain trade in the F5 (FFIV) Form 4?

The Form 4 specifies that Thomas Dean Fountain traded F5’s Common Stock. The filing records a non-derivative open-market sale of 1,328 common shares, along with the sale price per share and his direct holdings after the transaction.