SCHEDULE 13G/A

GMS INC

Common Stock, par value $0.01 per share · CUSIP: 36251C103

Event date: 2025-03-31

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

• Coliseum Capital Management, LLC

  Shares: 3,825,151 · Class: 9.96%

• Coliseum Capital, LLC

  Shares: 3,193,244 · Class: 8.3%

• Coliseum Capital Partners, L.P.

  Shares: 2,887,233 · Class: 7.5%

• Coliseum Capital Co-Invest III, L.P.

  Shares: 25,846 · Class: 0.1%

• Coliseum Capital Co-Invest IV, LP

  Shares: 280,165 · Class: 0.7%

• Adam Gray

  Shares: 3,825,151 · Class: 9.96%

• Christopher Shackelton

  Shares: 3,825,151 · Class: 9.96%

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