All lobbying filings
CORNERSTONE GOVERNMENT AFFAIRS, INC.
Lobbying for MAINSPRING ENERGY INC · Energy Technology
Filing
4th Quarter - Report
Reporting period
4th Quarter 2025
Oct 1 - Dec 31 · Posted Jan 15, 2026
Income
$40,000.00
What the client paid this registrant for the period.
Client based in
California
Lobbyists on this filing
9
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JOHN SANDELLPreviously held: Tax Counsel, Legislative Assistant; Ways and Means Committee (Camp, Ryan, Brady)
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TODD WEBSTERPreviously held: Communications Senate Member Office (Murray, Daschle), Chief of Staff Senate Member Office (Coons)
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MICHAEL GOODMANPreviously held: Chief of Staff House Member Office (Kind), Legislative Staff House Member Office (Braley, Barrow)
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STACY RICHPreviously held: Leadership Staff Director, Senior Leadership Advisor and Floor Director, Leadership Advisor (Senate -Murray); Senate Cloakroom Asst, Dem Cloakroom (Reid, Daschle); Staff/Press Asst (Daschle)
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SARAH VENUTOPreviously held: Senior Advisor (Manchin); Counsel, Comm Energy & Natural Resources Chief Counsel; Chief Counsel (Manchin); Staff Director, Comm on Energy & Natural Resources; Director, Office of External Affairs, Federal Energy Regulatory Commission
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COLLEEN KAVENEY MOSSPreviously held: Legislative Correspondent, Staff Assistant, Senator Roy Blunt
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RONALD STORHAUGPreviously held: Dep Asst Sec, Dep of Treasury; Director of Tax and Econ Policy, Tax and Econ Policy Advisor, Senate Small Business Cmte; Sr Econ Policy Advisor, Econ Policy Advisor, Legis Asst, Senate Member Office(Kaine);Staff Asst, Senate Budget Committee
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TONY ESSALIHPreviously held: COS, LD, LA House Member Office (Culberson), LA House Member Office (Archer), SA House Member Office (Hastings), Intern House Member Office (Bliley)
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STEVE MARCHESEPreviously held: Senior Policy Advisory (State); Senior Staff, House Approps Cmte
Government bodies contacted
2
Lobbying activity
3
Tax treatment of linear generator.
Tax and regulatory treatment of linear generators.
Energy regulatory treatment and investments associated with linear generators.