[Form 4] Portillo's Inc. Insider Trading Activity

Portillo's Inc. director Eugene I. Lee Jr. reported an open-market purchase of 286,000 shares of Class A common stock at a weighted average price of $5.18 per share.

Rhea-AI Filing Summary

Portillo's Inc. director Eugene I. Lee Jr. reported an open-market purchase of 286,000 shares of Class A common stock at a weighted average price of $5.18 per share. The shares were bought indirectly through a family trust in multiple transactions between $5.02 and $5.34.

After these purchases, indirect holdings through the family trust increased to 416,250 shares, and direct holdings are 60,798 shares. This filing highlights a substantial net increase in the director’s overall economic exposure to Portillo's stock.

Insider Trade Summary

Net Buyer: 286,000 shares

Net Buy 2 txns

Insider LEE EUGENE I JR

Role Director

Bought 286,000 shs ($1.48M)

Type	Security	Shares	Price	Value
Purchase	Class A common stock	286,000	$5.18	$1.48M
holding	Class A common stock	--	--	--

Holdings After Transaction: Class A common stock — 416,250 shares (Indirect, By Family Trust); Class A common stock — 60,798 shares (Direct)

Footnotes (1)

1. F1. The price per share reported in this column is a weighted average price. These shares were acquired in multiple transactions at prices ranging from $5.02 to $5.34, inclusive. The reporting person undertakes to provide to the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in the preceding sentence.

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Accepted by SEC EDGAR 03/13/2026 - 06:15 PM Learn about SEC filing dates

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^*

LEE EUGENE I JR

(Last) (First) (Middle)

C/O PORTILLO'S INC.

2001 SPRING ROAD, SUITE 400

(Street)

OAK BROOK IL 60523

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Portillo's Inc. [ PTLO ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

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
Class A common stock	03/13/2026		P		286,000	A	$5.18(1)	416,250	I	By Family Trust
Class A common stock								60,798	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. The price per share reported in this column is a weighted average price. These shares were acquired in multiple transactions at prices ranging from $5.02 to $5.34, inclusive. The reporting person undertakes to provide to the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in the preceding sentence.

Remarks:

	/s/ Kelly M. Kaiser, as attorney-in-fact for Eugene I. Lee, Jr.	03/13/2026
	** 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.