Jun 20, 2005. /Lesprom Network/. Mr Gustaf Serlachius, member of UPM's board of directors, resigns the board as of June 17, 2005 after turning 70 years. His position will not be replaced. Gustaf Serlachius has been a member of the board since the company's foundation in 1996. Previously he was a member of the board of directors of Repola Ltd since 1990.