The company, backed by Giouroukos’s Technomar and two investment firms, is looking to sell 15,380,000 shares at between $14 and $16 each.
A further 2,307,000 shares are available to underwriters in a listing which is backed by nine banks.
Poseidon first revealed its intention to go public in June, with Morgan Stanley, Deutsche Bank and UBS as joint bookrunners.
Today’s filing shows Citi, Jefferies, ABN AMRO, DVB, Credit Agricole and UniCredit have been brought on board.
