People / Carrington Giammittorio
Giammittorio Carrington

Carrington M. Giammittorio

A “One to Watch,” Carrington Giammittorio is an associate in the Litigation Practice Group at Haynes Boone, and she focuses on securities law defense and internal investigations. Carrington’s experience with both government enforcement and private securities litigation makes her uniquely suited to guide companies and individuals though parallel proceedings—helping her clients build a solid defense on all fronts. Her experience extends beyond securities law to helping clients develop strategies for responding to inquiries from governmental and regulatory agencies without compromising (or contradicting) the defense of simultaneous private litigation. She is a strong advocate for her clients and routinely manages complex legal disputes with a sharp eye and a steady hand. Carrington’s practice also extends to white collar defense, complex commercial litigation, and antitrust.

Select representations include:

  • Representation of public company and certain officers in simultaneous SEC investigation and putative class action related to disclosures regarding order backlog; received termination letter from SEC staff and dismissal with prejudice of federal complaint under the Private Securities Litigation Reform Act. 
  • Defense of Goldman Sachs and underwriter syndicate in securities class action alleging false and misleading statements in the public offering documents of Adeptus Health Inc.
  • Defense of public oil and gas company, private investment firm, and certain company officers and directors in parallel state and federal 1933 Act cases related to offering disclosures.
  • Representation of public company CFO in connection with special committee investigation related to stock repurchase program.
  • Defense of multiple investigations related to potential insider trading; received closing letters from SEC staff indicating no further action.
    Representation of public company CEO following receipt of Wells notice; persuaded the Securities and Exchange Commission to drop charges that CEO misled investors about the company’s credit portfolio and associated risk.
  • Representation of Fortune 50 company in connection with SEC investigation into public disclosures following an internal investigation regarding conduct of sales personnel that were the simultaneous focus of a putative class action; received closing letters from SEC staff indicating no further action.
  • Representation of investment advisers and investment funds in addressing and responding to deficiency letters from the SEC Division of Examinations, avoiding referrals to the Enforcement Division.

When not serving clients, Carrington is committed to philanthropy and mentorship. She currently serves as the national Chair of the Alpha Delta Pi Foundation Advisory Council. She is also passionate about fostering the professional development of current undergraduate students at her alma mater and provides advice to students interested in law school and the legal profession through the University of Virginia’s Alumni Mentoring system.

At the University of Virginia School of Law, Carrington was the inaugural Law, Psychiatry, and Public Policy Fellow and served as an Articles Editor for the Virginia Journal of Criminal Law. She also worked as a research assistant for multiple professors, helping to edit books and design syllabi for seminars.

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  • Included in the "Ones to Watch" category of Best Lawyers in America, Woodward/White, Inc., 2021-2023
  • Included in the "Ones to Watch" category of Best Lawyers in America, Woodward/White, Inc., 2021-2022
  • "A Look at the SEC’s Last Decade of Cybersecurity Enforcement Efforts, Part II: Focus on Registered Entities," American Bar Association, February 15, 2022.
  • "A Look at the SEC’s Last Decade of Cybersecurity Enforcement Efforts, Part I: Focus on Public Companies," American Bar Association, January 7, 2022.
  • “2020 Year in Review: Antitrust and Business Litigation,” co-author, Texas Bar Journal 2020 Year in Review, January 2021.
  • “2019 Year in Review: Antitrust and Business Litigation,” co-author, Texas Bar Journal 2019 Year in Review, January 2020.
  • "A Little Less Talk: Attorneys' Daily Risk of Insider Trading Liability," author, The DICTA, Dallas Association of Young Lawyers, June 2017.


J.D., University of Virginia School of Law, 2016, Virginia Journal of Criminal Law, Articles Editor

B.A., University of Virginia, 2012, Echols Scholar



Emily Westridge Black, Carrington Giammittorio in Texas Bar Journal: ‘Antitrust and Business Litigat [...]
July 23, 2021

2020 Year in Review The year brought significant developments to the legal profession and caselaw. The Texas Bar Journal Board of Editors has assembled a series of articles highlighting these issues. The topics featured are not exhaustive, and the opinions reflect only the views of the authors. This year, the stage is set for the U.S. Supreme Court to further define the scope of unlawful exclusi [...]