 Plekanec signed with Kladno during the 2012–13 NHL lockout.On 15 September 2014, Plekanec was named an alternate captain of the Canadiens, along with P. K. Subban, Max Pacioretty and Andrei Markov.On 16 October 2015, Plekanec and the Canadiens agreed to a two-year, $12 million contract extension, signing him through until the end of the 2017–18 season.