Landon Stropko

Registered Lobbyist
Disclosed Prior Positions
Leg. Dir., Sen. Mike Enzi (2017-2018); Rep. Cynthia Lummis (2009-2016): Chief of Staff (DC), Leg. Dir., Sr. Leg. Asst, Leg. Asst; Rep. Barbara Cubin (2003-2008): Sr. Leg. Asst, Leg. Asst, Leg. Aide, Leg. Correspondent, Intern
Leg. Dir., Sen. Mike Enzi (2017-2018); Rep. Cynthia Lummis (2009-2016): Chief of Staff (DC), Leg. Dir., Sr. Leg. Asst, Leg. Asst; Rep.Barbara Cubin (2003-2008): Sr. Leg. Asst, Leg. Asst, Leg. Aide, Leg.Correspondent, Intern
Lobby Filings
756
Clients
74
Firms
1
Years Active
2018–2026
Total Contributed
$297,325
Contributions
240
Recipients
82
Contrib Filings
17
Top Recipient Legislators
LegislatorPtyStTotal
John Barrasso R WY $18,800
Cynthia Lummis R WY $14,400
Jason Smith R MO $11,000
John Cornyn R TX $8,800
John Curtis R UT $7,800
John Thune R SD $7,000
Doug Lamborn R CO $5,500
Shelley Capito R WV $5,500
John Boozman R AR $5,250
Adrian Smith R NE $5,000
Brett Guthrie R KY $5,000
Cathy Rodgers R WA $4,500
Mike Lee R UT $4,500
Roger Marshall R KS $4,000
Steve Daines R MT $4,000
Cory Gardner R CO $4,000
J. Vance R OH $3,900
Michael Enzi R WY $3,750
Lauren Boebert R CO $3,750
Mike Carey R OH $3,500
Top Committees / PACs
PayeeCountTotal
NATIONAL REPUBLICAN SENATORIAL COMMITTEE 27 $58,750
COMMON VALUES PAC 7 $12,500
LUMMIS FOR WYOMING 4 $8,900
NATIONAL REPUBLICAN CONGRESSIONAL COMMITTEE 4 $8,500
NRSC 3 $5,875
STEER PAC 5 $5,500
LAMBORN FOR CONGRESS 9 $5,500
WILD AND WONDERFUL PAC 2 $5,000
GUTHRIE VICTORY FUND 1 $5,000
HEARTLAND VALUES 1 $5,000
NRCC 1 $5,000
MR. SOUTHERN MISSOURIAN IN THE HOUSE PAC 1 $5,000
CATHY MCMORRIS RODGERS FOR CONGRESS 4 $4,500
FRIENDS OF JOHN BARRASSO 2 $4,300
CORY GARDNER FOR SENATE 4 $4,000

Lobbying Filings

YearFirmClientIncomeDoc
2026
Registration
INVARIANT LLC ORKORA INC. —
2026
Registration
INVARIANT LLC CRITICAL ENERGY SYSTEMS —
2026
2nd Quarter - Report
INVARIANT LLC SEDRON TECHNOLOGIES, LLC $60,000
2026
2nd Quarter - Report
INVARIANT LLC KARPOWERSHIP UK LIMITED $90,000
2026
2nd Quarter - Report
INVARIANT LLC CARBON REMOVAL CO., INC. DBA VAULTED DEEP $60,000
2026
2nd Quarter - Report
INVARIANT LLC GENERAL MATTER INC $100,000
2026
2nd Quarter - Report
INVARIANT LLC TOYOTA MOTOR NORTH AMERICA, INC. $90,000
2026
2nd Quarter - Report
INVARIANT LLC AMERICAN BEVERAGE ASSOCIATION $110,000
2026
2nd Quarter - Report
INVARIANT LLC ECOLAB $60,000
2026
2nd Quarter - Report
INVARIANT LLC WATER COALITION AGAINST PFAS $70,000
Page 1 of 50  ·  500 filings Next

Political Contributions

Recipient / Honoree Legislator Payee / Committee Date Amount
Senator John Barrasso John Barrasso (R, WY) BARRASSO VICTORY Jun 30, 2026 $2,000
Rep. Harriet Hageman Harriet Hageman (R, WY) HAGEMAN VICTORY FUND Jun 30, 2026 $1,000
Rep. Dave Taylor — TAYLOR FOR CONGRESS Jun 30, 2026 $1,000
Rep. Mike Carey Mike Carey (R, OH) CAREY FOR CONGRESS Jun 30, 2026 $1,000
National Republican Senatorial Committee — NATIONAL REPUBLICAN SENATORIAL COMMITTEE Jun 14, 2026 $3,125
Rep. Lauren Boebert Lauren Boebert (R, CO) LAUREN BOEBERT FOR CONGRESS May 13, 2026 $500
Rep. Brett Guthrie Brett Guthrie (R, KY) GUTHRIE VICTORY FUND Mar 31, 2026 $5,000
National Republican Congressional Committee — NATIONAL REPUBLICAN CONGRESSIONAL COMMITTEE Mar 31, 2026 $2,500
Rep. Vince Fong Vince Fong (R, CA) FONGRESSPAC Mar 31, 2026 $1,000
National Republican Senatorial Committee — NATIONAL REPUBLICAN SENATORIAL COMMITTEE Mar 14, 2026 $3,125
Page 1 of 24  ·  240 contributions Next

Contribution Filings (LD-203)

YearPeriodPostedStatusDoc
2026 Mid Year Jul 30, 2026 Active
2025 Year End Jan 30, 2026 Active
2025 Mid Year Jul 30, 2025 Active
2024 Year End Jan 29, 2025 Active
2024 Mid Year Jul 30, 2024 Active
2023 Year End Jan 29, 2024 Active
2023 Mid Year Jul 31, 2023 Active
2022 Year End Jan 29, 2023 Active
2022 Mid Year Aug 1, 2022 Active
2021 Year End Jan 31, 2022 Active
2021 Mid Year Jul 29, 2021 Active
2020 Year End Jan 30, 2021 Active
2020 Mid Year Jul 30, 2020 Active
2019 Year End Jan 30, 2020 Active
2019 Mid Year Jul 30, 2019 Active
2018 Year End Jan 30, 2019 Active
2018 Mid Year Jul 25, 2018 Active