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Former Deputy Assistant Attorney General Matt Hanson represents companies and individuals in government investigations by Congress, the Securities and Exchange Commission (SEC), the Department of Justice (DOJ), and other federal and state regulators. Matt also counsels clients on related disclosure and regulatory issues and helps conduct internal investigations to assess potential liability before the government becomes involved. He is a partner in King & Spalding’s Special Matters & Government Investigations practice.

Matt has particular experience with congressional inquiries—both responding to large-scale investigations and helping manage low-key initial requests. He has prepared senior executives for dozens of public hearings and managed responses to high-pressure House and Senate inquiries. Many high-profile congressional matters are accompanied by parallel investigations from other regulators, and Matt has deep experience representing clients in the tech, finance, and healthcare spaces, among other industries, facing such enterprise-threatening regulatory investigations. As a former reporter, Matt also helps clients manage broader impacts that investigations can have on their business.

Matt served nearly three years with DOJ’s Office of Legislative Affairs, most recently as a Deputy Assistant Attorney General. While in that role, Matt handled sensitive congressional requests and investigations directed at the Department and prepared senior leadership for testimony, including the Attorney General. He worked closely with other DOJ leadership offices and with DOJ’s National Security Division, the FBI, and the Drug Enforcement Administration, managing the Department’s engagement with Congress on issues, cases, and legislation affecting national security. He engaged regularly with House and Senate committees focused on the judiciary, financial services, intelligence, and healthcare, as well as with House and Senate leadership staff.

Matt also has over a decade of private practice experience representing clients facing securities enforcement and other tech and white-collar investigations. Matt’s clients include public companies, social media platforms, emerging tech companies, broker-dealers, investment advisers, and financial institutions, as well as corporate officers and other individuals. He previously helped lead the firm’s work for clients in the digital assets space.

Before becoming a lawyer, Matt worked as a news reporter covering bonds, structured finance, and other financial markets.

Full Bio

Credentials

J.D., University of Virginia School of Law

B.A. Journalism, University of North Carolina at Chapel Hill, honors

District of Columbia

U.S. District Court for the Eastern District of Virginia

Virginia

American Bar Association

News

In the News · Source: Barron’s, The Wealth Advisor, The Daily Upside, Investment News and Global Investigations Review

August 27, 2025
K&S’s Client Alert is referenced in profiles examining the SEC’s marked decline in enforcement activity this year

In the News · Source: Law360 Pulse, Bloomberg Law, Thomson Reuters Westlaw Today, Securities Docket, Commercial Dispute Resolution, Global Legal Insights, Daily Report, Legal Era and The Daily Docket

June 23, 2025
Former U.S. Department of Justice Deputy Assistant Attorney General Matt Hanson rejoins the firm as a partner in its Special Matters and Government Investigations practice group in Washington, D.C.

View all

Matters

Companies, corporate executives, and senior government officials in congressional oversight investigations before House and Senate committees on a wide range of issues, including competition laws, online content moderation, national security, criminal and civil investigations, data privacy, cybersecurity, digital assets, and federal drug enforcement

Companies and individuals before the SEC, DOJ, and state attorneys general in both discrete non-public matters, as well as high-profile parallel investigations

Multiple blockchain-related start-ups and established companies in connection with SEC document and information requests

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Close

Matters

Companies, corporate executives, and senior government officials in congressional oversight investigations before House and Senate committees on a wide range of issues, including competition laws, online content moderation, national security, criminal and civil investigations, data privacy, cybersecurity, digital assets, and federal drug enforcement

Companies and individuals before the SEC, DOJ, and state attorneys general in both discrete non-public matters, as well as high-profile parallel investigations

Multiple blockchain-related start-ups and established companies in connection with SEC document and information requests

Companies conducting internal reviews to assess their risk of liability and implement proactive remediation to help avoid costly government investigations

Congressional Investigations

Global technology company before House and Senate Judiciary Committees in investigations of competition issues relating to “Big Tech”

Global technology company in responding to House January 6th Select Committee

Financial services firms in government inquiries arising out of multiple large-scale cybersecurity incidents, including before the Senate Permanent Subcommittee on Investigations, the House Committee on Oversight and Reform, and the House Committee on Energy and Commerce

Senior DOJ officials in multiple transcribed witness interviews in connection with investigations by House and Senate committees

Prepared many senior DOJ officials for public hearing testimony before a variety of congressional committees, including: the Attorney General; multiple senior FBI officials; multiple senior officials from DOJ’s National Security Division; multiple senior officials from DOJ’s Criminal Division; Administrator of the U.S. Drug Enforcement Administration; Director of the Bureau of Alcohol, Tobacco, Firearms and Explosives; Director of the U.S. Marshals Service; Director of the Federal Bureau of Prisons; Director of DOJ’s COVID-19 Fraud Enforcement Task Force; and the acting head of DOJ’s Office of Justice Programs

Responded to hundreds of congressional request letters to DOJ on a wide range of issues, including national security, criminal and civil investigations, data privacy, cybersecurity, digital assets, and federal drug enforcement

DOJ subject matter experts in dozens of substantive briefings (in both classified and unclassified settings) to members of Congress and senior staff of various committees, including the House Select Committee on the CCP

Securities and White-Collar Investigations

Publicly traded healthcare company in an SEC investigation of possible accounting fraud

Turnkey asset management platform in multiple SEC investigations of leveraged ETF trades and separate allegations by former employees

Multinational financial institution in a Financial Fraud Enforcement Task Force investigation relating to residential mortgage-backed securities disclosures

Conducted internal investigation for government-owned energy company regarding compliance with anti-bribery laws

Advised Japanese affiliate of big-four international audit firm on U.S. auditor independence rules

Broker-dealer in parallel SEC and FINRA investigations of possible layering and spoofing trades

Global technology company before state attorneys general investigating content moderation issues

Telecommunications company in state attorney general False Claims Act investigation

Variety of other clients in responding to the SEC on issues including investigative testimony, post-merger insider trading questions, revolving-door ethics rules, and third-party witness testimony in SEC litigation

Digital Assets and Emerging Technology

Digital asset fund manager in connection with an SEC enforcement inquiry and as a witness in a separate SEC investigation

Served as acting general counsel for client during transition of in-house legal function

Provided guidance to start-up ventures on potential regulatory and enforcement risk

News

In the News · Source: Barron’s, The Wealth Advisor, The Daily Upside, Investment News and Global Investigations Review

August 27, 2025
K&S’s Client Alert is referenced in profiles examining the SEC’s marked decline in enforcement activity this year

In the News · Source: Law360 Pulse, Bloomberg Law, Thomson Reuters Westlaw Today, Securities Docket, Commercial Dispute Resolution, Global Legal Insights, Daily Report, Legal Era and The Daily Docket

June 23, 2025
Former U.S. Department of Justice Deputy Assistant Attorney General Matt Hanson rejoins the firm as a partner in its Special Matters and Government Investigations practice group in Washington, D.C.

View all

Matters

Companies, corporate executives, and senior government officials in congressional oversight investigations before House and Senate committees on a wide range of issues, including competition laws, online content moderation, national security, criminal and civil investigations, data privacy, cybersecurity, digital assets, and federal drug enforcement

Companies and individuals before the SEC, DOJ, and state attorneys general in both discrete non-public matters, as well as high-profile parallel investigations

Multiple blockchain-related start-ups and established companies in connection with SEC document and information requests

See more

Close

Matters

Companies, corporate executives, and senior government officials in congressional oversight investigations before House and Senate committees on a wide range of issues, including competition laws, online content moderation, national security, criminal and civil investigations, data privacy, cybersecurity, digital assets, and federal drug enforcement

Companies and individuals before the SEC, DOJ, and state attorneys general in both discrete non-public matters, as well as high-profile parallel investigations

Multiple blockchain-related start-ups and established companies in connection with SEC document and information requests

Companies conducting internal reviews to assess their risk of liability and implement proactive remediation to help avoid costly government investigations

Congressional Investigations

Global technology company before House and Senate Judiciary Committees in investigations of competition issues relating to “Big Tech”

Global technology company in responding to House January 6th Select Committee

Financial services firms in government inquiries arising out of multiple large-scale cybersecurity incidents, including before the Senate Permanent Subcommittee on Investigations, the House Committee on Oversight and Reform, and the House Committee on Energy and Commerce

Senior DOJ officials in multiple transcribed witness interviews in connection with investigations by House and Senate committees

Prepared many senior DOJ officials for public hearing testimony before a variety of congressional committees, including: the Attorney General; multiple senior FBI officials; multiple senior officials from DOJ’s National Security Division; multiple senior officials from DOJ’s Criminal Division; Administrator of the U.S. Drug Enforcement Administration; Director of the Bureau of Alcohol, Tobacco, Firearms and Explosives; Director of the U.S. Marshals Service; Director of the Federal Bureau of Prisons; Director of DOJ’s COVID-19 Fraud Enforcement Task Force; and the acting head of DOJ’s Office of Justice Programs

Responded to hundreds of congressional request letters to DOJ on a wide range of issues, including national security, criminal and civil investigations, data privacy, cybersecurity, digital assets, and federal drug enforcement

DOJ subject matter experts in dozens of substantive briefings (in both classified and unclassified settings) to members of Congress and senior staff of various committees, including the House Select Committee on the CCP

Securities and White-Collar Investigations

Publicly traded healthcare company in an SEC investigation of possible accounting fraud

Turnkey asset management platform in multiple SEC investigations of leveraged ETF trades and separate allegations by former employees

Multinational financial institution in a Financial Fraud Enforcement Task Force investigation relating to residential mortgage-backed securities disclosures

Conducted internal investigation for government-owned energy company regarding compliance with anti-bribery laws

Advised Japanese affiliate of big-four international audit firm on U.S. auditor independence rules

Broker-dealer in parallel SEC and FINRA investigations of possible layering and spoofing trades

Global technology company before state attorneys general investigating content moderation issues

Telecommunications company in state attorney general False Claims Act investigation

Variety of other clients in responding to the SEC on issues including investigative testimony, post-merger insider trading questions, revolving-door ethics rules, and third-party witness testimony in SEC litigation

Digital Assets and Emerging Technology

Digital asset fund manager in connection with an SEC enforcement inquiry and as a witness in a separate SEC investigation

Served as acting general counsel for client during transition of in-house legal function

Provided guidance to start-up ventures on potential regulatory and enforcement risk

News

In the News · Source: Barron’s, The Wealth Advisor, The Daily Upside, Investment News and Global Investigations Review

August 27, 2025
K&S’s Client Alert is referenced in profiles examining the SEC’s marked decline in enforcement activity this year

In the News · Source: Law360 Pulse, Bloomberg Law, Thomson Reuters Westlaw Today, Securities Docket, Commercial Dispute Resolution, Global Legal Insights, Daily Report, Legal Era and The Daily Docket

June 23, 2025
Former U.S. Department of Justice Deputy Assistant Attorney General Matt Hanson rejoins the firm as a partner in its Special Matters and Government Investigations practice group in Washington, D.C.

View all

Credentials

J.D., University of Virginia School of Law

B.A. Journalism, University of North Carolina at Chapel Hill, honors

District of Columbia

U.S. District Court for the Eastern District of Virginia

Virginia

American Bar Association