Sandra Hanna leads the firm's SEC Enforcement practice, based in Washington, DC and New York. She represents public companies, regulated entities, audit firms and senior executives in regulatory enforcement matters before the SEC, DOJ, PCAOB, FINRA, and other domestic and international law enforcement agencies. Sandra also has significant experience representing individual auditors and senior accountants in complicated technical accounting matters. She also frequently leads SEC and DOJ appointed Independent Corporate Monitor teams.

Sandra is recognized as a nationwide leader in securities enforcement matters. She has been continuously ranked by Chambers USA for Securities Enforcement since 2014. Chambers USA notes she is described as "a terrific, incredibly smart, and experienced SEC lawyer" and "an expert in her field: thoughtful, tenacious, and dedicated to client service." Best Lawyers in America named Sandra as a "Lawyer of the Year" for securities enforcement matters in 2022 and 2024 and has continuously recommended her as a leading enforcement attorney since 2016. Securities Docket also named her to its "Enforcement 40" list of "the best and brightest securities defense lawyers." She is a regular speaker at industry conferences and is routinely quoted in the press on enforcement matters.

Prior to joining Steptoe, Sandra spent nine years at a premier Chambers-ranked SEC enforcement boutique law firm, which she co-founded. During law school, she worked in the Summer Honors Program in the SEC's Division of Enforcement. Prior to earning a JD and MBA at Georgetown, Sandra managed the professional careers of several Grammy Award-winning musicians.