Form4insider filings, from the source

Company · CIK 0001166663 · SIC 4412 — Deep Sea Foreign Transportation of Freight · NYSE

TSAKOS ENERGY NAVIGATION LTD · TEN

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $835k · 3net −$835k
$10k$10k$100k$100k$1M$1MbuyssalesJul 13Jul 24Aug 4Aug 16Aug 27Sep 7Sep 19

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 SForm 4 →Sep 22, 4:15 pm EDTTheoharrys Evgenios KosmatosCFO and CAO10,000$53.00$530,01414,700−40.5%
Aug 13, 2026 SForm 4 →Aug 17, 4:15 pm EDTClio HatzimichalisDirector5,000$41.07$205,3315,000−50.0%
Jul 14, 2026 SForm 4 →Jul 16, 4:15 pm EDTNicholas Francis TommasinoDirector2,490$40.07$99,7622,874−46.4%
Jul 8, 2026 GForm 4 →Jul 10, 4:15 pm EDTNikolaos TsakosChief Executive Officer, Director1,000,000——500,000—

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.