Mark Warren

🏛️ Revolving Door

Former Government Position:

ChfTaxCounsel, Sen Fin Comm; SrTaxCounsel, Sen Thune; TaxCounsel, Hs W&M Comm; DepAsstSec, Dept of Treas, Leg Affairs; ChfCounsel, Sen Repub Policy Comm; StaffDir and ChfCounsel, Sen Small Bus Comm; TaxAndFinanceCounsel, Sen Small Bus Comm

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AI Overview

Mark Warren has appeared in 736 federal lobbying filings at Brownstein Hyatt Farber Schreck, LLP, representing 50 clients. As a former government official, they bring insider expertise to their lobbying work — part of Washington's "revolving door." Active across 36 policy areas.

736
Total Filings
1
Firms
50
Clients
36
Issue Areas

Issue Areas

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Filing History

YearFilingsClients
20216530
202215240
202316545
202416045
202519454

Firms

Brownstein Hyatt Farber Schreck, LLP736 filings

Top Clients

Highly Innovative Fuels27 filings
Monolith Materials, INC.22 filings
Pernod Ricard USA21 filings
Bloom Energy19 filings
Johnson & Johnson Services, INC.19 filings
T-mobile19 filings
Wynn Resorts, Limited19 filings
American Petroleum Institute19 filings
Apollo Global Management19 filings
National Automobile Dealers Association19 filings
Dell Technologies, INC.18 filings
Policy and Taxation Group18 filings
Nareit18 filings
Tiaa17 filings
American Public Power Association17 filings
Wolters Kluwer16 filings
Athene Holding16 filings
Clean Fuels Alliance America16 filings
Mgm Public Policy, LLC16 filings
Exxon Mobil Corp15 filings

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Data Sources: Senate LDA Filings

Last updated: February 2026

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