SCHEDULE 13D/A

Shenandoah Telecommunications Co

Common Stock · CUSIP: 82312B106

Event date: 2025-08-08

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

• ECP ControlCo, LLCReported CIK 0001707921

  Shares: 6,774,728.00 · Class: 11.6%

• Energy Capital Partners IV, LLCReported CIK 0001845291

  Shares: 6,774,728.00 · Class: 11.6%

• Energy Capital Partners GP IV, LPReported CIK 0001844921

  Shares: 6,774,728.00 · Class: 11.6%

• Energy Capital Partners IV-A, LPReported CIK 0001726198

  Shares: 6,774,728.00 · Class: 11.6%

• Energy Capital Partners IV-B, LPReported CIK 0001726216

  Shares: 6,774,728.00 · Class: 11.6%

• Energy Capital Partners IV-C, LPReported CIK 0001726217

  Shares: 6,774,728.00 · Class: 11.6%

• Energy Capital Partners IV-D, LPReported CIK 0001726219

  Shares: 6,774,728.00 · Class: 11.6%

• Energy Capital Partners IV-B (Hill City IP), LPReported CIK 0002032499

  Shares: 3,221,550.00 · Class: 5.9%

• ECP Fiber Holdings GP, LLCReported CIK 0002032452

  Shares: 3,553,178.00 · Class: 6.1%

• ECP Fiber Holdings, LPReported CIK 0002032502

  Shares: 3,553,178.00 · Class: 6.1%

• Hill City Holdings GP, LLCReported CIK 0002032495

  Shares: 3,221,550.00 · Class: 5.9%

• Hill City Holdings, LPReported CIK 0001881388

  Shares: 3,221,550.00 · Class: 5.9%

• Energy Capital Partners Management, LPReported CIK 0001815150

  Shares: 4,751.00 · Class: 0.01%

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