Famous for her series regular role as Agnes Clark on CBS's Golden Boy and for her recurring roles on SyFy's The Magicians and NBC's Chicago P.D. She is also notable for her film roles in Harold, Brooklyn's Finest, and Starlet.
She made her first large screen appearance in the 2005 feature Transamerica and her first television appearance in a 2005 episode of Law & Order: Criminal Intent.
She acted in two 2009 episodes of Gossip Girl and in two 2010 episodes of House M.D..
Born Stella Maeve Johnston, she grew up in Nyack, New York. She has been in a relationship with fellow actor Benjamin Wadsworth. On May 10, 2019, they got engaged.
Maeve, Dakota Fanning, and Kristen Stewart were all in the cast of the 2010 film The Runaways.