Hanrahan didn’t immediately respond to a request for comment, nor did a spokesman for Tableau.
Tableau sprung from a research project at Stanford, where Hanrahan is a professor of computer graphics. With former PhD student Christopher Stolte and venture capitalist Christian Chabot, Hanrahan spun it out as a separate business in 2003 and went public a decade later.
An early employee at Pixar, Hanrahan worked on “Toy Story,” among other films, and won Oscars for technical achievement. While at the animation studios, he was chief architect of a design software called RenderMan Interface that describes three-dimensional scenes and turns them into digital photorealistic images.