Capitol Clarity / Lobbyists / M / Marcus Sebastian Mason

Marcus Sebastian Mason: federal lobbyist

Marcus Sebastian Mason is named as a lobbyist on federal disclosure filings for 25 clients through The Madison Group. The most recent filing naming them posted in October 2026. Issues reported include Telecommunications, Housing, Labor Issues/Antitrust/Workplace and Law Enforcement/Crime/Criminal Justice.

25Clients on filings
1Registrants
30Issue categories
2Years with reports

Clients and registrants

ClientRegistrantLatestIssues
IRON SHIELD SYSTEMS INCTHE MADISON GROUPQ4 2026Defense
NO DANGEROUS INTOXICATING PRODUCTS ("NODIP")THE MADISON GROUPQ3 2026Food Industry (safety, labeling, etc.), Consumer Issues/Safety/Products, Budget/Appropriations
XTAR LLCTHE MADISON GROUPQ3 2026Telecommunications, Homeland Security
BLACK CULTURAL ZONETHE MADISON GROUPQ3 2026Economics/Economic Development, Real Estate/Land Use/Conservation
RUBIN, WINSTON, DIERCKS, HARRIS & COOKE, LLP ON BEHALF OF MR. OMOLERE OMOMOWOTHE MADISON GROUPQ3 2026Medicare/Medicaid, Law Enforcement/Crime/Criminal Justice
NXP USA, INC.THE MADISON GROUPQ3 2026Science/Technology
INTRALOT. INC.THE MADISON GROUPQ3 2026Gaming/Gambling/Casino
FIRST-CITIZENS BANK & TRUST COMPANYTHE MADISON GROUPQ3 2026Financial Institutions/Investments/Securities, Housing
SPECIAL NEEDS NETWORK INC.THE MADISON GROUPQ3 2026Health Issues, Budget/Appropriations
BALLY'S CORPORATIONTHE MADISON GROUPQ3 2026Law Enforcement/Crime/Criminal Justice, Gaming/Gambling/Casino, Housing
COUNTY OF LOS ANGELESTHE MADISON GROUPQ3 2026Telecommunications, Government Issues
INTERNATIONAL ASSOCIATION OF FIRE FIGHTERSTHE MADISON GROUPQ3 2026Labor Issues/Antitrust/Workplace, Homeland Security, Budget/Appropriations
CERBERUS CAPITAL MANAGEMENT, L.P.THE MADISON GROUPQ3 2026Telecommunications, Financial Institutions/Investments/Securities, Aviation/Airlines/Airports
GOOGLE CLIENT SERVICESTHE MADISON GROUPQ3 2026Telecommunications, Labor Issues/Antitrust/Workplace, Copyright/Patent/Trademark
BNSF RAILWAYTHE MADISON GROUPQ3 2026Transportation, Law Enforcement/Crime/Criminal Justice
FIRSTKEY HOMES, LLCTHE MADISON GROUPQ2 2026Taxation/Internal Revenue Code, Housing
INTERNET2THE MADISON GROUPQ1 2026Telecommunications, Education
PHAROS CAPITAL GROUPTHE MADISON GROUPQ4 2025Economics/Economic Development, Agriculture, Small Business
NATIONAL ALLIANCE FOR PUBLIC CHARTER SCHOOLSTHE MADISON GROUPQ4 2025Education, Budget/Appropriations
EXECUTIVE LEADERSHIP COUNCILTHE MADISON GROUPQ4 2025Economics/Economic Development, Civil Rights/Civil Liberties, Education
WALGREEN CO.THE MADISON GROUPQ3 2025Pharmacy, Health Issues, Law Enforcement/Crime/Criminal Justice
OPEXUSTHE MADISON GROUPQ3 2025Government Issues
FEDERATED WIRELESS, INC.THE MADISON GROUPQ3 2025Telecommunications
NOVO NORDISK INC.THE MADISON GROUPQ2 2025Medicare/Medicaid, Health Issues
MTN (DUBAI) LIMITEDTHE MADISON GROUPQ1 2025Telecommunications

Activity by year

YearClientsRegistrants
2026161
2025201

Contributions reported on Form LD-203

YearItemsTotal
202622$95K

Pay is not disclosed for individual lobbyists. Filings do not confirm that records with the same name are one person, so this page may combine people who share the name Marcus Sebastian Mason. See the Capitol Clarity rankings and method.