Director adds 5,962 Jack in the Box (JACK) shares in open-market buy

Rhea-AI Filing Summary

Jack in the Box Inc. director Guillermo Diaz Jr. reported an open-market purchase of 5,962 shares of common stock on May 28, 2026. After this transaction, his direct ownership increased to 20,692 shares. This filing reflects a personal share accumulation by a board member.

Insider Trade Summary

1 transaction reported

Net Buy 1 txn

Insider DIAZ GUILLERMO JR

Role null

Bought 5,962 shs ($0.00)

Type	Security	Shares	Price	Value
Purchase	COMMON STOCK	5,962	$0.00	--

Holdings After Transaction: COMMON STOCK — 20,692 shares (Direct, null)

Footnotes (1)

Key Figures

Shares purchased: 5,962 shares Shares owned after transaction: 20,692 shares Transaction code: P +2 more

5 metrics

Shares purchased 5,962 shares Open-market purchase on May 28, 2026

Shares owned after transaction 20,692 shares Direct ownership following purchase

Transaction code P Purchase in open market or private transaction

Security type Common stock Non-derivative security

Net share direction 5,962 shares net buy NetBuySellDirection set to net-buy

Key Terms

open-market purchase, Form 4, non-derivative, common stock

4 terms

open-market purchase financial

"transaction_action: open-market purchase"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

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.

non-derivative financial

"transaction_type: non-derivative"

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.

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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).

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^*

DIAZ GUILLERMO JR

(Last) (First) (Middle)

9357 SPECTRUM CENTER BLVD

(Street)

SAN DIEGO CALIFORNIA 92123

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
JACK IN THE BOX INC [ JACK ]

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/28/2026

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	05/28/2026		P		5,962	A	$0.00	20,692	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:

	STEPHANIE BRINSFIELD by Power of Attorney for Guillermo Diaz	05/28/2026
	** 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)

FAQ

What insider transaction did JACK director Guillermo Diaz Jr report?

Guillermo Diaz Jr reported buying 5,962 shares of Jack in the Box common stock in an open-market purchase on May 28, 2026. The Form 4 filing shows this as a direct ownership transaction.

How many JACK shares does Guillermo Diaz Jr own after this Form 4?

After the reported purchase, Guillermo Diaz Jr directly owns 20,692 shares of Jack in the Box common stock. This total reflects his position immediately following the 5,962-share open-market transaction disclosed in the filing.

Was the JACK insider transaction a purchase or a sale?

The transaction was a purchase. The Form 4 identifies it with code P, described as an open-market or private purchase, and classifies the transaction direction as a buy of 5,962 common shares.

What type of security did the JACK director acquire in this filing?

The director acquired Jack in the Box common stock. The Form 4 lists the security title as COMMON STOCK and shows a non-derivative, open-market purchase of 5,962 shares, increasing his direct shareholdings.

Does the JACK Form 4 show any derivative securities activity?

The Form 4 does not show derivative activity. The transaction involves only non-derivative common stock, and the derivativeSummary section is empty, indicating no options, warrants, or other derivatives are reported in this filing.