Grampet is also in the race to acquire Bulgarian state-owned freight railway carrier BDZ Cargo, Stoica told Mediafax Tuesday.
In June, Stoica said the group was to file bids for the privatization of BDZ Cargo and HZ Cargo, with combined turnover of EUR250 million and 10,000 employees.
GFR, part of Grampet, has recently won an auction to sell a majority stake in Romanian state-owned freight railway operator CFR Marfa.