[Form 4] POTBELLY CORP Insider Trading Activity

Rhea-AI Filing Summary

Potbelly Corp (PBPB) director reported a merger-related cash-out of common stock. On 10/23/2025, each share was converted into the right to receive $17.12 in cash pursuant to the merger with RaceTrac, Inc. The filing shows disposition of 147,726 common shares at $17.12 per share, with beneficial ownership reported as 0 shares following the transaction.

The filing also details equity award treatment. It notes 9,765 unvested restricted stock units (RSUs). Vested RSUs were converted into cash based on the $17.12 per-share price. Unvested RSUs were cancelled and substituted into cash-based awards equal to the same per-share value, maintaining prior vesting conditions, with double-trigger accelerated vesting upon certain post-closing terminations.

Insights

Equity Capital Markets Analyst

Insider shares were cashed out at $17.12 due to the merger; neutral impact.

This Form 4 documents a standard merger consideration event. The director’s 147,726 common shares were converted into the right to receive $17.12 per share, consistent with the merger terms where Potbelly became a wholly owned subsidiary of RaceTrac, Inc.

Equity awards followed customary treatment: vested RSUs became cash at the per‑share price, while unvested RSUs turned into cash-based awards preserving vesting schedules and adding double-trigger vesting upon certain separations. This reflects administrative implementation of the deal terms rather than a discretionary insider trade.

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^*

Head David W

(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)

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

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)		147,726(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

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 9,765 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 of

3. (continued from footnote 2) 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.

Remarks:

	/s/ David Head	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).
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.

FAQ

What did PBPB’s director report in this Form 4?

A merger-related disposition of 147,726 Potbelly common shares at $17.12 per share, with post-transaction ownership of 0 shares.

What consideration did PBPB shareholders receive in the merger?

Each share of common stock was converted into the right to receive $17.12 in cash.

How were PBPB restricted stock units (RSUs) treated?

Vested RSUs were cashed out at $17.12 per share; unvested RSUs became cash-based awards preserving vesting and adding double-trigger vesting protections.

How many unvested RSUs were referenced for the reporting person?

The filing references 9,765 unvested RSUs.

What is the reporting person’s ownership after the transaction?

Beneficial ownership is reported as 0 shares following the transaction.

Who acquired Potbelly in the merger?

Potbelly became a wholly owned subsidiary of RaceTrac, Inc. through the merger.