Lobbying firms
Every registrant in the lobbying register: firms that lobby for clients, organizations that register to lobby for themselves, and self-employed lobbyists.
12,255
registrants, A to Z
| Firm | Location | Years active |
|---|---|---|
| SOCIETY FOR HUMAN RESOURCE MANAGEMENT | Alexandria, VA | Active 2007–2026 |
| SOCIETY FOR MATERNAL-FETAL MEDICINE | Washington, DC | Active 2016–2026 |
| SOCIETY FOR NEUROSCIENCE | WASHINGTON, DC | Active 2007–2026 |
| SOCIETY FOR VASCULAR SURGERY | Rosemont, IL | Active 2007–2026 |
| SOCIETY FOR WORLDWIDE INTERBANK FINANCIAL TELECOMMUNICATION, SC | La Hulpe, Belgium | Active 2012–2026 |
| SOCIETY OF AMERICAN FLORISTS | ALEXANDRIA, VA | Active 2007–2019 |
| SOCIETY OF CHEMICAL MANUFACTURERS & AFFILIATES | Crystal City, VA | Active 2007–2026 |
| SOCIETY OF DIAGNOSTIC MEDICAL SONOGRAPHY | Plano, TX | Active 2008 |
| SOCIETY OF HEALTH AND PHYSICAL EDUCATORS | Annapolis Junction, MD | Active 2009–2026 |
| SOCIETY OF HISPANIC PROFESSIONAL ENGINEERS | Los Angeles, CA | Active 2008–2009 |
| SOCIETY OF INTERVENTIONAL RADIOLOGY | FAIRFAX, VA | Active 2007–2026 |
| SOCIETY OF MEXICAN AMERICAN ENGINEERS AND SCIENTISTS | Houston, TX | Active 2008–2009 |
| SOCIETY OF NUCLEAR MEDICINE AND MOLECULAR IMAGING | RESTON, VA | Active 2007–2026 |
| SOCIETY OF TEACHERS OF FAMILY MEDICINE | WASHINGTON, DC | Active 2007–2026 |
| SOCURE, INC. | Incline Village, NV | Active 2024–2026 |
| SODEXO, INC. | Gaithersburg, MD | Active 2007–2019 |
| SOFI TECHNOLOGIES, INC. | San Francisco, CA | Active 2025–2026 |
| SOFTWARE FINANCE AND TAX EXECUTIVES COUNCIL | Annapolis, MD | Active 2007–2026 |
| SOFTWARE IN DEFENSE COALITION | Baltimore, MD | Active 2025–2026 |
| SOLANA POLICY INSTITUTE | Washington, DC | Active 2025–2026 |
| SOLAR ENERGY INDUSTRIES ASSOCIATION | WASHINGTON, DC | Active 2007–2026 |
| SOLAR ISLE VENTURES | Arlington, VA | Active 2026 |
| SOLARCITY | Washington, DC | Active 2010–2017 |
| SOLAREDGE TECHNOLOGIES INC. | Milpitas, CA | Active 2023–2026 |
| SOLARWINDS, INC. | Austin, TX | Active 2021–2026 |
| SOLARWORLD CALIFORNIA | Camarillo, CA | Active 2008–2011 |
| SOLAZYME, INC. | South San Francisco, CA | Active 2009–2015 |
| SOLECTRON CORPORATION | Milpitas, CA | Active 2007 |
| SOLENO THERAPEUTICS, INC. | Redwood City, CA | Active 2026 |
| SOLID WASTE ASSN OF NORTH AMERICA | SILVER SPRING, MD | Active 2007 |
| SOLOMON P. ORTIZ HOLDINGS, LLC | Corpus Christi, TX | Active 2012–2016 |
| SOLSTICE ADVANCED MATERIALS INC | Morris Plains, NJ | Active 2025–2026 |
| SOLUGEN INC | Houston, TX | Active 2022–2026 |
| SOLUTIA INC. | ST LOUIS, MO | Active 2007–2008 |
| SOLUTION STRATEGIES INC. | El Segundo, CA | Active 2007–2009 |
| SOLV ENERGY, LLC | San Diego, CA | Active 2021–2025 |
| SOLVAY CHEMICALS INC. | Houston, TX | Active 2024–2026 |
| SOLVAY PHARMACEUTICALS, INC. | MARIETTA, GA | Active 2007–2010 |
| SOLVE ADVOCACY LLC | Alexandria, VA | Active 2024–2026 |
| SOLVENTUM CORPORATION | MURRAY, UT | Active 2017–2026 |
| SOLYNDRA, INC. | Fremont, CA | Active 2010–2011 |
| SOMATUS, INC. | McLean, VA | Active 2022–2024 |
| SOMERTONS, PLLC | Washington, DC | Active 2021–2026 |
| SOMFY | ARLINGTON, VA | Active 2023–2024 |
| SOMMER BARNARD PC | INDIANAPOLIS, IN | Active 2007–2008 |
| SOMMERS, TODD | PHOENIX, AZ | Active 2007 |
| SOMOS UNOS | WASHINGTON, DC | Active 2007 |
| SONFIELD POLICY SOLUTIONS LLC | Washington, DC | Active 2023–2024 |
| SONNY CALLAHAN AND ASSOCIATES | Mobile, AL | Active 2007–2017 |
| SONORAN POLICY GROUP, LLC D/B/A STRYK GLOBAL DIPLOMACY, FORMERLY KNOWN AS SONORA | Washington, DC | Active 2007–2026 |
Names and addresses as the register lists them. Years active spans the first and latest year of any filing by the registrant, including registrations and amendments.