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Athanasios Tsiakmakis

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

Total Filings

2

Stocks Covered

1

Latest Filing

Jan 13, 2026

Filings

CISS

C3is Inc.

SC 13G/A · Jan 13, 2026

5.0%

400K shares

CISS

C3is Inc.

SC 13G · Oct 28, 2025

14.4%

155K shares