She served as an Independent Trustee of the Eaton Vance Mutual Funds since 1998 and on the Advisory Board of the Aspen Institute's Business and Society Program since 2009.

Starting in 2014, Stout also served on the U.S. Treasury Department's Financial Research Advisory Committee[6] and on the Board of Governors of the CFA Institute.

"[9] Stout expressed ethical concerns about UCLA's decision to name a business law center after Lowell Milken in light of the fact that he had been banned from the securities industry and barred from the New York Stock Exchange.

[11] Cultivating Conscience: How Good Laws Make Good People (Princeton University Press, 2011) critiques the "homo economicus" assumption of rational selfishness and surveys behavioral science evidence demonstrating how and when people sacrifice their own material welfare to help or to avoid harming others.

[15] Citizen Capitalism: How A Universal Fund Can Provide Influence and Income to All is a book by Lynn Stout that was published posthumously in 2019.