Ada Fernandez Johnson is a counsel in the firm’s Litigation Department, based in the Washington, D.C. office. Her practice focuses on representing corporations and individuals in securities class actions, derivative litigation and internal and governmental investigations. 

Ms. Fernandez Johnson is the co-author of numerous articles, including “Despite Unprecedented Challenges, SEC’s Division of Enforcement’s 2020 Annual Report Presents Healthy Enforcement Results,” Compliance & Enforcement (November, 2020); “The Perils of Parallel Proceedings Accompanying Internal Investigations,” PLI White Collar Practice Journal (Vol. 2, No. 1, September, 2019); “Drugmaker Fine Shows SEC’s Renewed Disclosure Focus,” Securities360 (August, 2019); “Inside the Role of Brazil’s CVM in Anti-Corruption Cases,” The Review of Securities & Commodities Regulation (October, 2018); “Dropped Herbalife Insider Case Leaves Questions Unanswered,” Law360 (February, 2015); “Allergan Fuels Tension Over Schedule 13D Disclosure,” Law360 (February, 2015); “Citigroup Fallout And SEC’s Strategic Resource Allocations,” Law360 (February, 2015); “Second Circuit Speaks On Source Of Duty For Insider Trading And Scope Of Disgorgement Remedy,” Financial Fraud Law Report (January, 2015); “Inside 2nd Circ Ruling on Overseas Whistleblower,” Law360 (August, 2014); “Heads of SEC Whistleblower Office and FCPA Unit Warn against Interference with Potential Whistleblowers,” Financial Fraud Law Dept (June, 2014); “The Vilar Decision: Second Circuit Curtails the Territorial Reach of Criminal Liability under Section 10(b),” Wall Street Lawyer (October, 2013); “Circuit Court Adopts Narrow Interpretation of Anti-Retaliation Provisions of Dodd-Frank Whistleblower Rules,” with Jyotin Hamid, et al., Financial Fraud Law Report (October, 2013); “A Good Way to Level the Playing Field in SEC Civil Actions,” Law360 (January, 2013); “Dodd-Frank Whistleblower Provision And Court's Broad Interpretation,” The Harvard Law School Forum on Corporate Governance and Financial Regulation (October, 2012); “Dodd-Frank Whistleblower Issues In Leshinsky And Asadi,” Law360 (July, 2012); “SEC 'Obey-the-Law' Injunctions Held Invalid,” The Harvard Law School Forum on Corporate Governance and Financial Regulation (July, 2012); “The Eleventh Circuit Casts Doubts On 'Obey The Law' Injunctions,” Insights (July, 2012); and “SEC 'Obey-The-Law' Injunctions Held Invalid,” FCPA Professor blog (June, 2012).

Ms. Fernandez Johnson has also been a featured contributor to articles in Corporate Disputes Magazine, including “Mini-Roundtable, U.S. Securities Class Actions” (October-December, 2019) and “Hot Topics, Securities Litigation (April–June, 2019).

Ms. Fernandez Johnson is also the executive editor of the Debevoise & Plimpton LLP Insider Trading & Disclosure Update.

Ms. Fernandez Johnson joined the firm in 2002. She received a J.D. cum laude from Georgetown University Law Center in 1998. She received a B.A. magna cum laude, with high honors from Brown University in 1993 and graduated Phi Beta Kappa.

Ms. Fernandez Johnson is a member of the Bars of Virginia and the District of Columbia. She is fluent in Spanish and proficient in Portuguese.


  • Georgetown University Law Center, 1998, J.D.

Bar Admissions

  • Virginia
  • District of Columbia