Welcome to our dedicated page for Tsakos Energy SEC filings (Ticker: TEN), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Tsakos Energy Navigation Ltd. filings document a foreign private issuer engaged in worldwide maritime transportation of liquid energy-related products. Its SEC record includes Form 20-F annual reporting and Form 6-K current reports covering audited financial statements, interim operating results, fleet and charter disclosures, preferred-share matters and incorporation by reference into registration statements.
Proxy materials and other 6-K filings describe annual meeting matters, shareholder voting procedures, board composition and executive finance roles. The company's filings also provide formal disclosure on governance, capital structure, registration statements on Form F-3 and Form S-8, and the risks and economics of operating crude, product, LNG and shuttle tanker assets.
Tsakos Energy Navigation President and COO Georgios Saroglou has filed an initial Form 3 detailing his holdings in the company. He directly owns 42,000 common shares, 4,130 Series E fixed-to-floating rate cumulative redeemable perpetual preferred shares, and 2,000 Series F fixed-to-floating rate cumulative redeemable perpetual preferred shares, establishing his reported equity stake.
TSAKOS ENERGY NAVIGATION LTD filed an initial insider ownership report for Chief Marine Officer Vasileios Papageorgiou. The Form 3 shows he directly holds 5,000 common shares of the company. This filing records his starting ownership position and does not report any recent share purchases or sales.
TSAKOS ENERGY NAVIGATION LTD director Clio Hatzimichalis filed an initial ownership report on Form 3, showing direct ownership of 10,000 Common Shares. This filing records her current stake as an insider and does not reflect any recent share purchases or sales.
TSAKOS ENERGY NAVIGATION LTD director Karen Jane Purnell has filed an initial Form 3 showing her beneficial ownership in the company. The filing reports that she directly holds 10,000 Common Shares of Tsakos Energy Navigation. This is a holdings disclosure rather than a new buy or sell transaction.
TSAKOS ENERGY NAVIGATION LTD executive Kosmatos Theoharrys Evgenios, the company’s CFO and CAO, filed an initial ownership report on Form 3. He reports direct beneficial ownership of 24,700 Common Shares and 300 Series F Fixed to Floating Rate Cumulative Redeemable Perpetual Preferred Shares.
TSAKOS ENERGY NAVIGATION LTD director reports initial holdings on a Form 3. Aristides Athanassios Nicholas Patrinos discloses direct ownership of 32,093 Common Shares. This filing lists his position as an insider and does not report any new share purchases or sales.
Tsakos Energy Navigation Limited announced a leadership change in its finance team. On March 3, 2026, Paul Durham stepped down as Co-Chief Financial Officer and Chief Accounting Officer, and will continue with the company in an advisory role.
The Board of Directors appointed Theoharrys E. Kosmatos, previously Co-Chief Financial Officer since July 1, 2024, as the new Chief Financial Officer and Chief Accounting Officer, effective March 3, 2026. This consolidates the company’s top finance and accounting responsibilities under a single executive.
Tsakos Energy Navigation Ltd. received an amended Schedule 13G filing showing that CastleKnight Master Fund LP, related CastleKnight and Weitman entities, and Aaron Weitman together beneficially own 1,230,648 common shares, or 4.1% of the class, as of 12/31/2025.
The filing states these holders have shared voting and dispositive power over all 1,230,648 shares and no sole power. They certify the shares were not acquired to change or influence control of Tsakos Energy Navigation, and that ownership represents 5 percent or less of the class.
Tsakos Energy Navigation Limited (TEN) appointed Clio Hatzimichalis, the company’s General Counsel since 2015, to its Board of Directors on October 27, 2025. With this addition, the Board now has 10 directors and is comprised of a majority of independent directors. Hatzimichalis brings over 20 years of legal experience in corporate, banking, finance, and shipping law, including prior roles at Norton Rose Fulbright and as in-house counsel.