Two shareholders in the Highway 407 toll road operator are trying to acquire SNC's 10.01% stake, with the dispute headed to Ontario Superior Court on June 21 to settle which one of them have the right of first refusal, SNC said in a statement.
SNC said it scrapped the C$3 billion sale of the stake, announced in April, to Ontario Municipal Employees Retirement System (OMERS).
Canada Pension Plan Investment Board (CPPIB) and Cintra Global S.E., a unit of Spain's Ferrovial, both exercised their rights of first refusal to buy the stake under the same terms as the OMERS deal.
SNC shareholders have been closely watching the Highway 407 sale, which will be used to pay down debt, after the company reported a surprise quarterly loss earlier this month and said it would exit 15 countries. The Montreal-based company's stock has slipped 41% this year following souring relations between Saudi Arabia and Canada, headwinds in its metals and mining business and a political scandal engulfing Canada's prime minister.
The stake sale, due to close in early June, is now expected to be delayed for a few weeks.
SNC said the stake should go to CPPIB, arguing that Cintra agreed in 2002 to waive its right of first refusal over future sales of shares in Highway 407.
CPPIB, which has a 40% stake in Highway 407, declined to comment.
The court could either decide to sell the entire 10.01% share in Highway 407 to CPPIB, or divide it between the two companies, according to analysts and a spokesman for Ferrovial, which now has a 43.23% stake.
"Contrary to the position taken by SNC and CPPIB, Cintra's (right of first refusal) has not been waived in these circumstances," the Madrid-based global operator of services and infrastructure said.
SNC will retain 6.8% ownership of Highway 407 after closing. SNC shares rose about 1% in Toronto early Friday afternoon.
(Reporting by Allison Lampert in Montreal; Editing by Richard Chang)