MAYER BROWN LLP

Registrant on federal lobbying filings · filed 2025 to 2026

$6,780,000 Income reported

56 Clients represented

280 Filings counted

0 Former members lobbying

Income is the fees this registrant reported being paid to lobby. 11 filings on this record were restated by a later amendment and are left out of every total here. Everything on this page is grouped by the registrant's LDA id (24123), not by name.

Clients top 50 of 56

FREEDOM HOLDING CORP $870,000 6 filings
ONSEMI (ON SEMICONDUCTOR CORPORATION) $660,000 6 filings
COALITION FOR REGULATED HFCS INC. $540,000 6 filings
GALAXY DIGITAL HOLDINGS, LP $410,000 6 filings
AT&T SERVICES INC $360,000 6 filings
MICHELIN NORTH AMERICA, INC. $320,000 5 filings
21ST CENTURY PRIVACY COALITION $300,000 6 filings
CTIA - THE WIRELESS ASSOCIATION $300,000 6 filings
UNITED STATES STEEL CORPORATION $290,000 6 filings
SUNIVA, INC. $280,000 6 filings
IFM INVESTORS PTY LTD. $250,000 6 filings
MEDLINE INDUSTRIES, L.P. (FORMERLY MEDLINE INDUSTRIES, INC.) $250,000 6 filings
ITO EN (NORTH AMERICA) INC. $220,000 5 filings
ELEMENT ELECTRONICS $180,000 6 filings
HEALTH CARE ALLIANCE FOR PATIENT SAFETY $180,000 6 filings
STARR INSURANCE HOLDINGS, INC. $180,000 6 filings
U.S. VENTURE, INC. (FORMERLY U.S. OIL) $160,000 6 filings
PRIMEMAX MEDICAL INDUSTRIES, INC. $150,000 4 filings
VERIZON COMMUNICATIONS INC AND VARIOUS SUBSIDIARIES $150,000 6 filings
COINBASE, INC. $110,000 6 filings
OURARING INC. $110,000 6 filings
NOVOCURE $90,000 4 filings
LIVE NATION ENTERTAINMENT, INC. $60,000 6 filings
HUNTSMAN CORPORATION $50,000 6 filings
SOLONIAN RESOURCES, LLC $50,000 4 filings
SYENSQO USA LLC $50,000 4 filings
ARISTA NETWORKS, INC. $40,000 6 filings
UBER TECHNOLOGIES, INC. $30,000 6 filings
WEBB WHEEL PRODUCTS, INC. $30,000 5 filings
RABO AGRIFINANCE LLC $20,000 3 filings
VOLVO GROUP NORTH AMERICA $20,000 2 filings
ABBOTT LABORATORIES $10,000 6 filings
AMERICAN EXPRESS $10,000 7 filings
CHUBB INA HOLDINGS, INC. (FORMERLY ACE INA HOLDINGS, INC.) $10,000 6 filings
SECURITY INDUSTRY ASSOCIATION $10,000 6 filings
SOUTHWIRE COMPANY, LLC $10,000 6 filings
SWISS BANKERS ASSOCIATION $10,000 5 filings
VISA INC. $10,000 6 filings
ALUMINUM EXTRUDERS COUNCIL $0 1 filing
ARKEMA INC $0 6 filings
BOLTEX MANUFACTURING CO. LP $0 3 filings
MEC AERIAL WORK PLATFORMS $0 6 filings
NACHI AMERICA INC. $0 1 filing
PALO ALTO NETWORKS, INC. $0 6 filings
RAZOR USA LLC $0 6 filings
SABIN METAL CORPORATION $0 1 filing
SHIPPING TAXATION COALITION (INFORMAL COALITION) $0 6 filings
SONOS INC. $0 6 filings
WELDBEND CORPORATION $0 3 filings
WORLD JEWISH RESTITUTION ORGANIZATION $0 6 filings

Ranked by reported money. 56 clients in total.

Lobbyists named 6

DANIEL HARDER 17 filings · through 2026 Staff Assistant/Clerk - House Ways and Means 2014; Legislative Director -Rep. Mike Bishop 2015-2018
WARREN PAYNE 12 filings · through 2026 U.S. Intl Comm: Trade Analyst, 2002-04; Economic Advisor, 2004-07; House Ways and Means Committee; Trade Economist, 2007-09; Sr. Economist//Trade Advisor, 2009…
TIMOTHY J KEELER ESQ 6 filings · through 2026 USTR, Chief of Staff, 2006-2009 US Treasury Department, Deputy to the Assistant Secretary of Legislative Affairs, 2001-2006 Presidential Transition Team, Polic…
JESSICA WOOLLEY 2 filings · through 2025 Legislative Assistant to Reps. Bean, Schuler, Loebsack, Hill and Obey.
JONATHAN BECKER 2 filings · through 2026 Chief of Staff, Senator Amy Klobuchar (2010-13); Chief Counsel, Senator Amy Klobuchar (2007-09).
HOWARD W WALTZMAN 1 filing · through 2025 1996-01: General Counsel, Sen. Sam Brownback; 2001-04: Tel Counsel, US House Energy/Commerce Comm; 2004-06: Chief Counsel, Telecom and Internet Subcommitee.

A lobbyist who previously held a covered government position must disclose it. We flag the ones whose name resolves to a member of Congress and link the ones still in our roster. The revolving door collects them across every firm.

Reported by year 2 years

2026 $2,150,000 90 filings
2025 $4,630,000 190 filings

Issues lobbied 17

Trade (domestic/foreign) 74
Taxation/Internal Revenue Code 55
Telecommunications 25
Health Issues 12
Consumer Issues/Safety/Products 8
Transportation 7
Chemicals/Chemical Industry 6
Financial Institutions/Investments/Securities 6
Foreign Relations 6
Insurance 6
Manufacturing 6
Government Issues 5
Natural Resources 5
Tariff (miscellaneous tariff bills) 5
Energy/Nuclear 4
Banking 1
Medical/Disease Research/Clinical Labs 1

The count is how many filings named that issue area. A filing reports one lump figure covering every issue on it, so the money above cannot be split between them.

Agencies and chambers lobbied 15

SENATE 145
HOUSE OF REPRESENTATIVES 138
U.S. Trade Representative (USTR) 24
Commerce, Dept of (DOC) 16
Treasury, Dept of 10
Environmental Protection Agency (EPA) 6
State, Dept of (DOS) 5
Executive Office of the President (EOP) 4
Labor, Dept of (DOL) 4
White House Office 4
Food & Drug Administration (FDA) 2
Natl Economic Council (NEC) 2
Natl Security Council (NSC) 2
Energy, Dept of 1
Securities & Exchange Commission (SEC) 1

Recent filings 291 total

Q2

FREEDOM HOLDING CORP

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $80,000 income · posted Aug 11, 2026

View → Q2

SABIN METAL CORPORATION

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · posted Jul 24, 2026

View → Q2

HUNTSMAN CORPORATION

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · posted Jul 23, 2026

View → Q2

VOLVO GROUP NORTH AMERICA

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $20,000 income · posted Jul 22, 2026

View → 2A

ONSEMI (ON SEMICONDUCTOR CORPORATION)

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $110,000 income · posted Jul 21, 2026

View → RR

VOLVO GROUP NORTH AMERICA

2nd Quarter (Apr 1 - June 30) 2026 · posted Jul 20, 2026

View → Q2

STARR INSURANCE HOLDINGS, INC.

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $50,000 income · posted Jul 20, 2026

View → Q2

SUNIVA, INC.

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $40,000 income · posted Jul 20, 2026

View → Q2Y

UBER TECHNOLOGIES, INC.

2nd Quarter (Apr 1 - June 30) 2026 · posted Jul 20, 2026

View → Q2

UNITED STATES STEEL CORPORATION

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $10,000 income · posted Jul 20, 2026

View → Q2Y

SONOS INC.

2nd Quarter (Apr 1 - June 30) 2026 · posted Jul 20, 2026

View → Q2Y

SYENSQO USA LLC

2nd Quarter (Apr 1 - June 30) 2026 · posted Jul 20, 2026

View → Q2

MAERSK SERVICES USA INC.

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · posted Jul 20, 2026

View → Q2

IFM INVESTORS PTY LTD.

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $50,000 income · posted Jul 20, 2026

View → Q2

COALITION FOR REGULATED HFCS INC.

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $90,000 income · posted Jul 20, 2026

View → Q2

OURARING INC.

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $10,000 income · posted Jul 20, 2026

View → Q2Y

MEDLINE INDUSTRIES, L.P. (FORMERLY MEDLINE INDUSTRIES, INC.)

2nd Quarter (Apr 1 - June 30) 2026 · posted Jul 20, 2026

View → Q2

PRIMEMAX MEDICAL INDUSTRIES, INC.

2nd Quarter (Apr 1 - June 30) 2026 · $50,000 income · posted Jul 20, 2026

View → Q2

NOVOCURE

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $20,000 income · posted Jul 20, 2026

View → Q2

MICHELIN NORTH AMERICA, INC.

2nd Quarter (Apr 1 - June 30) 2026 · House · Senate · $70,000 income · posted Jul 20, 2026

View →

Showing the 20 most recent of 291 filings. Search the explorer for "MAYER BROWN LLP".

Source: federal Lobbying Disclosure Act filings, synced daily. Money is self-reported by the filer and often rounded. Lobbying is legal, disclosed activity.