SCHEDULE 13D/A

GREENIDGE GENERATION HLDGS I

Class A Common Stock, par value $0.0001 per share · CUSIP: 39531G100

Event date: 2026-01-08

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

• Atlas Capital Resources (A9) LPReported CIK 0001880358

  Shares: 2,749,438 · Class: 17.4%

• Atlas Capital Resources (A9-Parallel) LPReported CIK 0001880372

  Shares: 987,243 · Class: 6.2%

• Atlas Capital Resources (P) LP

  Shares: 100,588 · Class: 0.6%

• GGH Bridge Investment LPReported CIK 0001963983

  Shares: 199,048 · Class: 0.8%

• Atlas Capital GP LPReported CIK 0001882313

  Shares: 3,956,317 · Class: 25.0%

• Atlas Capital Resources GP LLCReported CIK 0001882294

  Shares: 3,956,317 · Class: 25.0%

• Andrew M. BurskyReported CIK 0000905112

  Shares: 3,956,317 · Class: 25.0%

• Timothy J. FazioReported CIK 0001394403

  Shares: 3,956,317 · Class: 25.0%

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