SCHEDULE 13G/A

Beam Therapeutics Inc

Common Stock par value $0.01 per share · CUSIP: 07373V105

Event date: 2024-12-31

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 IX, L.P.

  Shares: 4,540,132.00 · Class: 5.5%

• ARCH Venture Fund IX Overage, L.P.

  Shares: 4,540,132.00 · Class: 5.5%

• ARCH Venture Partners IX, L.P.

  Shares: 4,540,132.00 · Class: 5.5%

• ARCH Venture Partners IX Overage, L.P.

  Shares: 4,540,132.00 · Class: 5.5%

• ARCH Venture Partners IX, LLC

  Shares: 4,540,132.00 · Class: 5.5%

• Keith Crandell

  Shares: 4,557,862.00 · Class: 5.5%

• Clinton Bybee

  Shares: 4,550,630.00 · Class: 5.5%

• Robert Nelsen

  Shares: 4,600,747.00 · Class: 5.6%

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