SCHEDULE 13G/A

BRILLIANT EARTH GROUP INC

Class A Common Stock · CUSIP: 109504100

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

• Mainsail GP III, LLC

  Shares: 31,836,151 · Class: 68.71%

• Mainsail Partners III, L.P.

  Shares: 31,147,528 · Class: 67.23%

• Mainsail Co-Investors III, L.P.

  Shares: 688,623 · Class: 1.49%

• MAINSAIL INCENTIVE PROGRAM, LLC

  Shares: 61,920 · Class: 0.13%

• MAINSAIL MANAGEMENT COMPANY, LLC

  Shares: 61,920 · Class: 0.13%

• Gavin Turner

  Shares: 31,898,071 · Class: 68.85%

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