Portillo's marketing chief has 6,545 shares withheld

The shares covered tax obligations arising from vesting of a previously disclosed award, leaving 101,240 shares held directly.

Rhea-AI Filing Summary

Portillo's Inc. Chief Marketing Officer Denise Peggy Lauer had 6,545 Class A common shares deducted on September 22, 2026, to satisfy tax-withholding obligations on the vesting of a previously disclosed award. The transaction lists a price of $3.75 per share. Her direct holdings after the transaction were 101,240 shares.

Insider Trade Summary

Tax Withholding: 6,545 shares

Tax Withholding 1 txn

Insider Lauer Denise Peggy

Role Chief Marketing Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A common stock F1	6,545	$3.75	$25K

Holdings After Transaction: Class A common stock — 101,240 shares (Direct)

Footnotes (1)

1. F1. Represents shares deducted to satisfy tax withholding obligations on the vesting of a previously disclosed award.

Key Figures

Shares deducted for tax withholding: 6,545 shares Reported per-share price: $3.75 per share Direct shares after transaction: 101,240 shares

3 metrics

Shares deducted for tax withholding 6,545 shares September 22, 2026

Reported per-share price $3.75 per share September 22, 2026 transaction

Direct shares after transaction 101,240 shares Denise Peggy Lauer

Key Terms

Class A common stock, tax withholding obligations, vesting

3 terms

Class A common stock financial

"Class A common stock"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

tax withholding obligations financial

"satisfy tax withholding obligations on the vesting"

vesting financial

"on the vesting of a previously disclosed award"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many PTLO shares were withheld for taxes?

6,545 Class A common shares were deducted at $3.75 per share on September 22, 2026, to satisfy tax-withholding obligations tied to vesting of a previously disclosed award.

What were Denise Peggy Lauer's direct PTLO holdings after the transaction?

Denise Peggy Lauer, Portillo's Inc.'s Chief Marketing Officer, held 101,240 shares directly after the transaction.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/23/2026 - 05:20 PM Accepted by SEC EDGAR 09/23/2026 - 05:19 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^*

Lauer Denise Peggy

(Last) (First) (Middle)

C/O PORTILLO'S INC.

2001 SPRING RD, SUITE 400

(Street)

OAK BROOK ILLINOIS 60523

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/22/2026

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
Class A common stock	09/22/2026		F		6,545(1)	D	$3.75	101,240	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. Represents shares deducted to satisfy tax withholding obligations on the vesting of a previously disclosed award.

Remarks:

	By: /s/ Kelly M. Kaiser, as attorney-in-fact for Denise P. Lauer	09/23/2026
	** 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)