Lyndsay S. O'Reilly

Steinmetz Lyndsay
Lyndsay O’Reilly advises clients on all aspects of federal, state, and local political law compliance, including campaign finance, lobbying disclosure, government ethics and gift rules, procurement and pay-to-play laws, and tax implications of political activities. Lyndsay advises nonprofits on tax exemption, corporate governance, forming and operating connected PACs, and other complex issues. She supports a variety of clients, including companies, advocacy groups, trade associations, charities, lobbying firms, campaigns, PACs, and super PACs.

Lyndsay develops nationwide lobbying registration and disclosure compliance plans for nonprofits, lobbying firms, and publicly traded companies, and represents clients in state lobbying audits and enforcement actions. She is well versed in federal, state, and local pay-to-play rules applicable to government contractors and investment advisers, including disclosure and restrictions affecting business affiliates. Lyndsay also provides formation and counseling advice for 501(c)(3), 501(c)(4), 501(c)(6), and 527 organizations.

On behalf of a national high-profile issue advocacy group, Lyndsay organized a nationwide grant program to support local advocacy events. She reviews media content, ensures compliance with political advertising rules, vets contributions, and directs registration and reporting for federal and state political committees. She also provides guidance on lobbying and gift compliance, tax-exempt status matters, governance, contracts, branding, fundraising, and volunteer and affiliate relationships.

While earning her law degree, Lyndsay served as a judicial intern in the chambers of the Honorable James Boasberg of the U.S. District Court for the District of Columbia, and was an intern at the U.S. Department of Justice Public Integrity Section and at Fair Elections Legal Network.




  • J.D. with honors George Washington University Law School 2014
    • Executive editor, The George Washington Law Review
    • Judicial intern, Honorable James Boasberg of the U.S. District Court for the District of Columbia
    • Intern, U.S. Department of Justice Public Integrity Section
    • Intern, Fair Elections Legal Network
  • B.A. magna cum laude Allegheny College 2011
    • Phi Beta Kappa

Bar Admissions

  • Maryland
  • District of Columbia

Court Admissions

  • U.S. Court of Appeals for the Eighth Circuit