Carl Icahn gets everywhere...
Billionaire activist Carl Icahn won a proxy fight in 2011 that secured him three board seats, although he quit his investment in the company in April after six years. Mentor Graphics also fended off a hostile takeover by rival Cadence Design Systems Inc CDNS.N in 2008.
- http://www.reuters.com/article/us-mentor-graphics-m-a-siemens-idUSKBN1390Q4