Jon Tester
Democratic / Montana
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Net Worth Est.
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Trade Volume
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Total Trades
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Last Traded
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- Supporters
- Opponents
- Corporate Donors
- Proposed Legislation
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- Live Stock Portfolio
- Net Worth
- Revolving Door
Trade Volume by Year
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Trade Volume
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Total Trades
Top Traded Sectors
Trades
Click on a trade or stock for more details
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Estimated Live Stock Portfolio
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*These holdings are collected from annual financial disclosure statements. There are occasionally parsing errors, and it does not include recent transactions.
Revolving Door
Former staff of Jon Tester who went on to register as lobbyists, and the clients they were disclosed as representing at the time of filing. Parsed from the covered-position disclosures on Lobbying Disclosure Act filings — see the full Revolving Door dashboard.
18
Former staff who have lobbied
32
Public companies represented
146
Clients in total
Oct 21, 2026
Most recent filing
| Lobbyist | Role in this office | Disclosed clients | Lobbying firm | Latest filing |
|---|---|---|---|---|
| Justin Folsom New | Legislative Director, Senator Jon Tester (MT) | SOUTHERN COMPANY | Oct 21, 2026 | |
| Weston Haycock | Professional Staff Member, Senate Veterans Affairs Committee, Staff Asst to Senator Jon Tester |
PERSISTENT SYSTEMS, LLC
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AMERICAN DEFENSE INTERNATIONAL | Oct 20, 2026 |
| Stephanie Johnson New | Legislative Assistant, Sen. Jon Tester |
NATIONAL GROCERS ASSOCIATION
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NATIONAL GROCERS ASSOCIATION | Oct 19, 2026 |
| Weston Haycock New | SA, LA, PS - Sen. Tester | MCALLISTER & QUINN, LLC | Jul 22, 2026 | |
| Nathan Wyatt New | Legislative Aide, Legislative Correspondent, Staff Assistant, Sen. Jon Tester | THE WAYFINDER GROUP | Jul 20, 2026 | |
| Jason Henry New | PS - Sen. Tester | MCALLISTER & QUINN, LLC | Jan 21, 2026 | |
| Genevieve Beltrone New | Legislative Assistant, Senator Jon Tester. | CAPITOL COUNSEL LLC | Jan 20, 2026 | |
| Nathan Wyatt New | Legislative Aide, Legislative Correspondent, Staff Assistant - Sen. Jon Tester | STRATEGIES 360 | Oct 16, 2025 | |
| Brendan Mysliwiec New | U.S. Senator Jon Tester, U.S. Senate Committee on Indian Affairs |
APPALACHIAN TRAIL CONSERVANCY
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APPALACHIAN TRAIL CONSERVANCY | Sep 21, 2023 |
| Jason Henry New | Professional Staff Member, U.S. Senate Committee on Veterans Affairs, Chairman Jon Tester (D-MT) |
INTELSAT US LLC
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INTELSAT US LLC | Apr 20, 2023 |
| Amanda Arnold New | Senator Tester, legislative staff 2006-2009 | VALNEVA USA, INC. | Mar 18, 2022 | |
| Kellin Clark New | Senator Jon Tester - Senior Economic Advisor (11/18 - 7/19); Legislative Assistant (12/14 - 11/18); Legislative Aide (3/13 - 12/14); Legislative Correspondent (6/11 - 3/13) |
THE CAPITAL GROUP COMPANIES, IN…
|
THE CAPITAL GROUP COMPANIES, INC. AND ITS AFFILIATES | Jul 21, 2021 |
| Kellin Clark New | Senator Jon Tester - Senior Economic Advisor (11/18 - 7/19); Legislative Assistant (12/14 - 11/18); Legislative Aide (3/13 - 12/14); Legislative Correspondent (6/11 - 3/13) | S&P GLOBAL INC. (F/K/A MCGRAW HILL FINANCIAL INC.) | Jul 20, 2021 | |
| Valarie Molaison New | Office of Senator Tester, Congressional Science Fellow (Sep 2011 - Aug 2012); Office of Senator Brown, Health Legislative Assistant (Aug 2012 - Jan 2015) | NEUROCRINE BIOSCIENCES, INC | Jul 20, 2021 | |
| Stuart Varvel New | Executive Asst., Sen. Tester, 1/2007-8/2009; Prof. Staff Member, Sen. Comm. on Homeland Security & Governmental Affairs, 9/2013-12/2014; Leg. Asst. and Foreign Polity Advisor, Sen. Tester, 1/2015-7/2019 | TELEDYNE FLIR, LLC | Oct 21, 2019 | |
| Valarie Molaison New | Congressional Science Fellow for Sen. Jon Tester (MT); Health Legislative Assistant for Sen. Sherrod Brown (OH) |
ASTELLAS PHARMA US, INC.
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ASTELLAS PHARMA US, INC. | Apr 20, 2018 |
| Tom Lopach New | Chief of Staff - Sen. Jon Tester - 2010-2014; Senior Vice President Congressional Affairs - Export Import Bank of the United States - 2009; Legislative Aide - Sen. Edward M. Kennedy - 2001; Field Representative - Rep. Pat Williams - 1996; | AVOQ, LLC | Jul 20, 2017 | |
| Jason Rosenberg New | Legislative Assistant and Senior Economic Policy Advisor, Sen. Jon Tester; Legislative Assistant and Senior Legislative Assistant, Rep. Artur Davis | JPMORGAN CHASE HOLDINGS LLC | Jan 09, 2017 |
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Spending in Support of Jon Tester
Total Receipts
Outside Spending
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Top Receipts
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* Note: This data may contain refunds given to the committee. Names are hidden for individual donations below $250,000.
Outside Spending
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Other Candidates in District
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Proposed Legislation
Click on a row for more details
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Latest Action Date
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