LAWYER PROFILE
Katherine Addleman

Katherine Addleman

USA 2026

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Ranked in 2 practice areas

About

Provided by Haynes and Boone, LLP

Career

Known as a “powerhouse lawyer” in securities enforcement defense, Kit Addleman has built her nationwide practice by advising public companies, officers and directors, investment advisors, private funds and broker-dealers concerning securities investigations. She has successfully defended clients in civil and criminal investigations and litigation by the Securities and Exchange Commission and Department of Justice, advised clients on compliance with securities regulations and conducted internal investigations of suspected securities violations. Kit’s experience serving in four different regional offices over her 20 years in senior management at the SEC allows her to deftly advise clients at Haynes Boone. She is the chair of the firm’s nationwide White Collar and Government Investigations Section and a member of the SEC Enforcement Defense and Investment Management Practice Groups.

As director of the Atlanta Regional Office of the SEC, Kit led the enforcement, examination, and bankruptcy programs in five Southeastern states, which included directing the enforcement priorities and resolutions of investigations and litigation. She served the SEC in the Atlanta, Fort Worth, Denver, and Philadelphia offices and headed the enforcement program in the SEC's Fort Worth and Atlanta offices before being named the regional director in Atlanta in 2007. A sought-after authority for her knowledge of the SEC's enforcement and examination programs, Kit frequently speaks at national, international, and regional conferences. She has authored and contributed to numerous articles, white papers, and alerts on the subject.

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Litigation: White-Collar Crime & Government Investigations - Texas

Band 1
Band 1

Individual Editorial
Katherine Addleman is particularly well versed in SEC investigations and enforcement proceedings, representing a range of clients including private funds, public companies and directors.

Securities: Regulation: Enforcement - USA - Nationwide

Band 3
Band 3

Individual Editorial

Katherine Addleman is held in high regard for her representation of public companies, broker-dealers and investment managers in SEC enforcement actions related to accounting, disclosure and financial fraud.

Strengths

Provided by Chambers

  • Katherine works seamlessly together on matters involving lots of parties and are skilled in getting everyone to pull in the same direction.

    Litigation: White-Collar Crime & Government InvestigationsChambers Guide to the USA
  • Katherine does an incredible job in listening, educating, translating, and collaborating in a way that is invaluable.

    Litigation: White-Collar Crime & Government InvestigationsChambers Guide to the USA
  • Kit is a detail-oriented and exceptional communicator with SEC technical expertise.

    Securities: Regulation: EnforcementChambers Guide to the USA
  • Kit has very strong regulatory SEC knowledge and is a real asset in that area.

    Securities: Regulation: EnforcementChambers Guide to the USA
  • Kit has the right amount of poise and tenacity. She is a pleasure to work with but does not back down when advocating for her clients.

    Securities: Regulation: EnforcementChambers Guide to the USA
  • Kit is a real SEC specialist.

    Securities: Regulation: EnforcementChambers Guide to the USA

Ranked Individuals at Haynes and Boone, LLP (126)

California

Colorado

District of Columbia

New York

North Carolina

Texas

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