[Form 4] POTBELLY CORP Insider Trading Activity

Rhea-AI Filing Summary

Potbelly Corp (PBPB) reported an insider transaction tied to its merger with RaceTrac. On 10/23/2025, the company’s SVP, Franchising disposed of 15,855 shares of common stock at $17.12 per share, consistent with the merger consideration. Following the transaction, beneficial ownership was 0 shares.

The filing notes that, at the effective time of the merger, each outstanding Potbelly share was converted into the right to receive $17.12 in cash. Unvested RSUs were converted into cash-based awards with the same vesting terms and “double-trigger” acceleration provisions. Unvested PSUs were converted into cash awards valued at $17.12 per underlying share, with performance measured at the greater of target or actual achievement and payable on the original vesting date.

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

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X

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^*

McKee Karen Lynette

(Last) (First) (Middle)

500 W MADISON ST

SUITE 1000

(Street)

CHICAGO IL 60661

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
POTBELLY CORP [ PBPB ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
10/23/2025

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
Common Stock	10/23/2025		D(1)		15,855(2)(3)	D	$17.12	0	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
Performance Stock Units	(4)(5)	10/23/2025		D(4)(5)			6,172	(4)(5)	(4)(5)	Common Stock	6,172	$17.12	0	D
Performance Stock Units	(4)(5)	10/23/2025		D(4)(5)			4,651	(4)(5)	(4)(5)	Common Stock	4,651	$17.12	0	D
Performance Stock Units	(4)(5)	10/23/2025		D(4)(5)			5,524	(4)(5)	(4)(5)	Common Stock	5,524	$17.12	0	D

Explanation of Responses:

1. Pursuant to the Agreement and Plan of Merger, dated as of September 9, 2025 (the "Merger Agreement"), by and among the Issuer, RaceTrac, Inc. ("Parent"), and Hero Sub Inc. ("Merger Sub"), Merger Sub merged with and into the Issuer (the "Merger"), with the Issuer surviving the Merger as a wholly owned subsidiary of Parent. At the effective time of the Merger (the "Effective Time"), upon the terms and subject to the conditions set forth in the Merger Agreement, each share of common stock, par value $0.01 per share ("Common Stock"), of the Issuer that was issued and outstanding as of immediately prior to the Effective Time was automatically cancelled, extinguished and converted into the right to receive $17.12 per share in cash, without interest thereon (but subject to applicable withholding) (the "Per Share Price").

2. Includes 10,681 unvested restricted stock units ("RSUs"). Pursuant to the terms of the Merger Agreement, at the Effective Time, (A) each RSU that is outstanding and vested (but not yet settled) as of immediately prior to the Effective Time, taking into account any acceleration of vesting of any RSU that occurs upon the Effective Time (each, a "Vested RSU"), was automatically cancelled and converted into the right to receive an amount in cash, without interest thereon (but subject to applicable withholding), equal to the product obtained by multiplying (i) the Per Share Price by (ii) the total number of shares of Common Stock subject to such RSU and (B) each outstanding RSU that was not a Vested RSU (each, an "Unvested RSU") was automatically cancelled and substituted into the contingent right to receive an aggregate amount (without interest) in cash (a "Substituted RSU Cash Award") equal to the product obtained by multiplying (i) the Per Share Price by (ii) the total number of shares

3. (continued from footnote 2) of Common Stock subject to such RSU. Each such Substituted RSU Cash Award will continue to have, and will be subject to, the same vesting terms and conditions as applied to the corresponding Unvested RSU immediately prior to the Effective Time, except that each such Substituted RSU Cash Award will be afforded "double-trigger" accelerated vesting upon the applicable holder's termination without cause or resignation for good reason, in each case, that occurs during a post-closing period.

4. Pursuant to the terms of the Merger Agreement, at the Effective Time, each performance-based restricted stock unit ("PSU") that was outstanding and unvested as of immediately prior to the Effective Time, was automatically cancelled and substituted into and became the contingent right to receive an amount in cash, without interest thereon (but subject to applicable withholding) (a "Substituted PSU Cash Award"), equal to the product obtained by multiplying (i) the Per Share Price by (ii) the total number of shares of Common Stock subject to such PSU, with the achievement of the performance-based vesting metrics applicable to each PSU based on the greater of target or actual achievement of the applicable performance metrics. Each such Substituted PSU Cash Award will be payable on the last day of the performance period that applied to the corresponding PSUs immediately prior to the Effective Time (such date, the "Vesting Date"), subject to the applicable holder's continued employment or

5. (continued from footnote 4) service through the Vesting Date, except that each such Substituted PSU Cash Award will be afforded "double-trigger" accelerated vesting upon such applicable holder's termination without cause or resignation for good reason, in each case, that occurs during a post-closing period.

Remarks:

	/s/ Karen Lynette McKee	10/27/2025
	** 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).
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FAQ

What did Potbelly (PBPB) disclose in this Form 4?

An officer disposed of 15,855 common shares at $17.12 per share on 10/23/2025 due to the merger consideration.

Who is the reporting person and role at PBPB?

The reporting person is an Officer, serving as SVP, Franchising.

What was the outcome for the insider’s holdings after the transaction?

Beneficial ownership reported was 0 shares following the transaction.

What consideration did Potbelly shareholders receive in the merger?

Each share was converted into the right to receive $17.12 in cash, without interest and subject to withholding.

How were Potbelly RSUs treated in the merger?

Vested RSUs were cashed out at $17.12 per share; unvested RSUs became cash awards with the same vesting and double-trigger acceleration.

How were Potbelly PSUs treated in the merger?

Unvested PSUs became cash awards valued at $17.12 per underlying share, with performance set at the greater of target or actual achievement.

When did the earliest reportable transaction occur?

The earliest transaction date disclosed is 10/23/2025.