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LINGTAO KONG

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

2

Stocks Covered

1

Latest Filing

Dec 1, 2025

Filings

RIDGETECH INC.

SC 13D/A · Dec 1, 2025

12.2%

2.2M shares

RIDGETECH INC.

SC 13D · Mar 6, 2025

38.0%

2.2M shares