Nierenberg Investment Management Company, Inc. → POTBELLY CORP

Stake: 10.30% Shares: 3,087,302 CUSIP: 73754Y100 Class: Common Stock, par value $0.01

Item 4 — Purpose of Transaction

Item 4 of the Schedule 13D is hereby amended to add the following Language: On March14, 2025, the Reporting Persons submitted a letter to the Board of Directors of the issuer (the "March 14 Letter"). The full text of the March 14 Letter is attached hereto as Exhibit 99.1.

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

3 13D/G filings on this issuer

2 other filings besides this one

Filer Track Record

2 filings by this filer

1 other filing in the data moat

Short Interest

—

Not in latest FINRA snapshot

Other 13D/G Filings on POTBELLY CORP

Filed	Form	Filer	Stake	Shares
2018-03-21	SC	Privet Fund LP	—	—	view →
2018-02-07	SC	Privet Fund LP	—	—	view →

Other Filings by Nierenberg Investment Management Company, Inc.

Filed	Form	Issuer	Stake	Shares
2025-03-06	SCHEDULE	RIVERVIEW BANCORP INC RVSB	7.70%	1,625,065	view →

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