What is Summer Glau's net worth? Summer Glau's net worth is $4 million dollars. Born in San Antonio, Texas, Summer Glau initially pursued a career in classical dance. She was home-schooled through most of her early life in order to accommodate her dance schedule. However, an ankle injury ended her dance aspirations, and she shifted her focus to acting. She made her on-camera debut in a small role on the television series "Angel". This led to the role that would make her a household name, as River Tam, in the cult hit "Firefly". Since then she has gone back and forth between television and film roles, primarily in the science fiction genre. Her projects have included guest starring or recurring roles on such series as "CSI", "Cold Case", "The 4400", "The Unit", "Dollhouse", "Chuck", and "Alphas". She also starred in the short-lived projects, "Terminator: The Sarah Connor Chronicles" and "The Cape". She has starred in the television films "Mammoth" and "The Initiation of Sarah" and the big screen project, "Serenity". She is next slated to appear in the feature film, "Knights of Badassdom".