SCHEDULE 13G

GIGCAPITAL8 CORP

Class A ordinary shares, par value $0.0001 per share · CUSIP: G3864J126

Event date: 2025-10-06

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

• Tenor Capital Management Company, L.P.

  Shares: 1,500,000.00 · Class: 6.7%

• Tenor Opportunity Master Fund, Ltd.

  Shares: 1,500,000.00 · Class: 6.7%

• Robin Shah

  Shares: 1,500,000.00 · Class: 6.7%

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