SCHEDULE 13G/A

Portillo's Inc

Class A common stock, $0.01 par value per share · CUSIP: 73642K106

Event date: 2025-06-30

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

• Berkshire Partners Holdings LLC

  Shares: 3,859,067 · Class: 5.2%

• BPSP, L.P.

  Shares: 3,859,067 · Class: 5.2%

• Berkshire Partners LLC

  Shares: 3,859,067 · Class: 5.2%

• Berkshire Fund VIII, L.P.

  Shares: 2,516,498 · Class: 3.4%

• Berkshire Fund VIII-A, L.P.

  Shares: 1,045,630 · Class: 1.5%

• Berkshire Investors III LLC

  Shares: 69,164 · Class: 0.1%

• Berkshire Investors IV LLC

  Shares: 227,775 · Class: 3.2%

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