SCHEDULE 13G

Maze Therapeutics Inc

Common Stock par value $0.0001 per share · CUSIP: 578784100

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

• ARCH Venture Fund X, L.P.

  Shares: 4,120,053.00 · Class: 9.4%

• ARCH Venture Fund X Overage, L.P.

  Shares: 4,120,053.00 · Class: 9.4%

• ARCH Venture Partners X, L.P.

  Shares: 4,120,053.00 · Class: 9.4%

• ARCH Venture Partners X Overage, L.P.

  Shares: 4,120,053.00 · Class: 9.4%

• ARCH Venture Partners X, LLC

  Shares: 4,120,053.00 · Class: 9.4%

• Keith Crandell

  Shares: 4,120,053.00 · Class: 9.4%

• Kristina Burow

  Shares: 4,120,053.00 · Class: 9.4%

• Steven Gillis

  Shares: 4,120,053.00 · Class: 9.4%

• Robert Nelsen

  Shares: 4,120,053.00 · Class: 9.4%

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