SCHEDULE 13D/A

POTBELLY CORP

Common Stock, par value $0.01 · CUSIP: 73754Y100

Event date: 2025-03-14

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• D3 Family Fund, LPReported CIK 0001282685

  Shares: 887,555 · Class: 3%

• D3 Family Bulldog Fund, LPReported CIK 0001365745

  Shares: 1,561,985 · Class: 5.2%

• Benedict Value Fund, L.P.

  Shares: 425,555 · Class: 1.4%

• Haredale Ltd.

  Shares: 105,469 · Class: 0.3%

• Nierenberg Investment Management Company, Inc.Reported CIK 0001282683

  Shares: 2,980,564 · Class: 10%

• David NierenbergReported CIK 0001040899

  Shares: 3,087,302 · Class: 10.3%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.