SCHEDULE 13G/A

MERCER INTERNATIONAL INC

Common Stock, par value $1.00 per share · CUSIP: 588056101

Event date: 2025-09-30

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

• REDWOOD CAPITAL MANAGEMENT LLC

  Shares: 4,648,133.00 · Class: 6.9%

• Redwood Capital Management Holdings, LP

  Shares: 4,648,133.00 · Class: 6.9%

• Double Twins K, LLC

  Shares: 4,648,133.00 · Class: 6.9%

• Redwood Master Fund, Ltd.

  Shares: 3,889,143.00 · Class: 5.8%

• Ruben Kliksberg

  Shares: 4,648,133.00 · Class: 6.9%

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