With his third Oscar, Penn joins an elite band of triple winners, including Daniel Day-Lewis and Jack Nicholson
Sean Penn has won the Oscar for best supporting actor for One Battle After Another, at the 98th Academy Awards now under way in Los Angeles.
With this win, Penn has joined an elite company of male actors to win three acting Oscars, joining Daniel Day-Lewis, Jack Nicholson and Walter Brennan. Penn previously won best actor Oscars for Mystic River in 2004 and Milk in 2009.
