Angelicoussis joined his father's shipping company in 1973. On the death of his father in 1989, Angelicoussis became president and
chief executive officer (CEO) of the Angelicoussis Shipping Group. In 2013, he was ranked first among Greek shipowners by
Lloyd's List. At that time, the company had a fleet of 93 ships, including 41 tankers, with 80 of the ships sailing under a Greek flag. The company's first two
LNG carriers were on order. In 2015, Angelicoussis had a net worth of $2.4 billion, and a fleet of 96 ships, according to
Bloomberg. In 2019, Angelicoussis was maintaining his position as the largest shipowner in Greece in terms of tonnage. The company was the number one shipper of
LNG to the US that year. Angelicoussis died in Athens on 10 April 2021 after suffering a heart attack. Greek prime minister
Kyriakos Mitsotakis paid tribute to him: "John Angelicoussis honoured the maritime tradition and our homeland in every way". He commended Angelicoussis for sailing his fleet under a Greek flag, moving the company's headquarters to Greece, and supporting Greek health services and maritime education. ==Personal life==