SCHEDULE 13D/A

MONRO MUFFLER BRAKE INC

Common Stock, par value $0.01 per share · CUSIP: 610236101

Event date: 2026-03-10

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

• GAMCO INVESTORS, INC. ET ALReported CIK 0000807249

  Shares: 0.00 · Class: 0.0%

• GABELLI FUNDS LLCReported CIK 0001081407

  Shares: 356,500.00 · Class: 1.2%

• GAMCO Asset Management Inc.Reported CIK 0001460612

  Shares: 2,279,192.00 · Class: 7.6%

• GABELLI FOUNDATION, INC.

  Shares: 100,000.00 · Class: 0.3%

• MJG ASSOCIATES, INC.

  Shares: 32,400.00 · Class: 0.1%

• Teton Advisors, Inc.Reported CIK 0001444874

  Shares: 50,000.00 · Class: 0.2%

• GGCP, INC.Reported CIK 0001238894

  Shares: 0.00 · Class: 0.0%

• Associated Capital Group, Inc.Reported CIK 0001642122

  Shares: 0.00 · Class: 0.0%

• GABELLI MARIO JReported CIK 0001185533

  Shares: 800.00 · Class: 0.0%

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