Seaspan has said investor Fairfax Financial Holdings has a stake of 36% in the company.
It has 76.9m shares after closing the second tranche of its $1bn investment this week.
Fairfax bought $250m of senior notes and warrants which were immediately exercised to double the proceeds.
The additional capital is earmarked for growth and debt repayment, Seaspan told investors.
An SEC filing by Seaspan appeared to indicate that Fairfax had a stake of 47.7%, but Seaspan explained that this includes 25m unexercised seven-year warrants.
At the same time, long-term Seaspan shareholders, the Washington Entities, are clearing the way for a possible sale of its stock.
SEC filings said a registration rights agreements had been arranged which would allow for the resale of the common stock the Washington Entities hold.
Billionaire Dennis Washington has long been a significant shareholder in Seaspan, which was co-founded by his son Kyle.
