Congress Trades in Thermo Fisher Scientific Inc. (TMO)
26 members of Congress have disclosed trading TMO.
Total trades
53
Purchases
36
Sales
17
Members
26
Est. volume
$1.2M
Last traded
Oct 30, 2025
Buyers' avg return
+3.2%
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26 members of Congress have disclosed trading Thermo Fisher Scientific Inc. (TMO), with 53 transactions in total — 36 purchases and 17 sales worth an estimated $1.2M at range midpoints, leaning heavily toward buying. The most active TMO trader is Richard W. Allen (5 disclosures). The most recent disclosed TMO trade was on Oct 30, 2025. Across the 6 disclosed TMO purchases we can price, the average return since disclosure is +3.2% (information only, not advice). See our full TMO fundamentals page for price, valuation and a return calculator.
Corporate insiders in TMO
It's not just Congress — here's what TMO's own executives and directors have done with the stock recently, from SEC Form 4 filings.
Insider buys
0
Insider sells
1
Bought
$0
Sold
$185,064
| Date | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| Apr 27, 2026 | Pettiti Gianluca | President & COO | Sell | 400 | $185,064 |
Every disclosed TMO trade
| Disclosed | Politician | Type | Amount | Traded | |
|---|---|---|---|---|---|
| Nov 1, 2025 | Lisa McClain R | Sale | $1,001 - $15,000 | Oct 30, 2025 | filing ↗ |
| Sep 23, 2025 | Valerie Hoyle D | Sale | $1,001 - $15,000 | Sep 23, 2025 | filing ↗ |
| Sep 11, 2025 | Valerie Hoyle D | Sale | $1,001 - $15,000 | Mar 3, 2025 | filing ↗ |
| Sep 11, 2025 | Valerie Hoyle D | Purchase | $1,001 - $15,000 | Oct 29, 2024 | filing ↗ |
| Aug 13, 2025 | Lisa McClain R | Purchase | $1,001 - $15,000 | Jul 22, 2025 | filing ↗ |
| Aug 11, 2025 | Julia Letlow R | Sale | $1,001 - $15,000 | Apr 28, 2025 | filing ↗ |
| Aug 11, 2025 | Lisa McClain R | Purchase | $1,001 - $15,000 | Dec 11, 2024 | filing ↗ |
| Jun 9, 2025 | Richard W. Allen | Sale | $15,001 - $50,000 | May 16, 2025 | filing ↗ |
| May 7, 2025 | Richard W. Allen | Sale | $15,001 - $50,000 | Apr 11, 2025 | filing ↗ |
| May 6, 2025 | Julie Johnson D | Sale | $1,001 - $15,000 | Apr 7, 2025 | filing ↗ |
| Mar 17, 2025 | Bruce Westerman R | Purchase | $1,001 - $15,000 | Mar 3, 2025 | filing ↗ |
| Sep 5, 2024 | John James R | Sale | $1,001 - $15,000 | Sep 4, 2024 | filing ↗ |
| Aug 27, 2024 | John James R | Purchase | $1,001 - $15,000 | Mar 6, 2024 | filing ↗ |
| Oct 21, 2023 | Greg Stanton D | Purchase | $1,001 - $15,000 | Sep 26, 2023 | filing ↗ |
| Jun 6, 2023 | Zoe Lofgren D | Sale | $1,001 - $15,000 | May 25, 2023 | filing ↗ |
| Apr 3, 2023 | Daniel Goldman | Purchase | $1,001 - $15,000 | Mar 6, 2023 | filing ↗ |
| Nov 4, 2022 | Kathy Manning D | Purchase | $1,001 - $15,000 | Oct 12, 2022 | filing ↗ |
| Apr 5, 2022 | Richard W. Allen | Purchase | $15,001 - $50,000 | Mar 10, 2022 | filing ↗ |
| Nov 2, 2021 | Dan Newhouse R | Purchase | $1,001 - $15,000 | Nov 2, 2021 | filing ↗ |
| Oct 7, 2021 | Zoe Lofgren D | Purchase | $1,001 - $15,000 | Sep 2, 2021 | filing ↗ |
| Sep 9, 2021 | Zoe Lofgren D | Purchase | $1,001 - $15,000 | Aug 9, 2021 | filing ↗ |
| Jul 22, 2021 | Kevin Hern R | Purchase | $50,001 - $100,000 | Jul 21, 2021 | filing ↗ |
| May 5, 2021 | Lois Frankel D | Purchase | $1,001 - $15,000 | May 5, 2021 | filing ↗ |
| Mar 15, 2021 | Richard W. Allen | Purchase | $15,001 - $50,000 | Mar 10, 2021 | filing ↗ |
| Feb 19, 2021 | Peter Meijer R | Sale | $15,001 - $50,000 | Feb 16, 2021 | filing ↗ |
| Feb 5, 2021 | Richard W. Allen | Purchase | $15,001 - $50,000 | Jan 25, 2021 | filing ↗ |
| Dec 9, 2020 | Lois Frankel D | Purchase | $1,001 - $15,000 | Dec 9, 2020 | filing ↗ |
| Nov 4, 2020 | Lois Frankel D | Purchase | $1,001 - $15,000 | Nov 4, 2020 | filing ↗ |
| Aug 7, 2020 | Joe Courtney D | Sale | $1,001 - $15,000 | Aug 7, 2020 | filing ↗ |
| Apr 30, 2020 | David B. McKinley R | Purchase | $1,001 - $15,000 | Apr 30, 2020 | filing ↗ |
| Apr 10, 2020 | Kevin Hern R | Purchase | $1,001 - $15,000 | Apr 9, 2020 | filing ↗ |
| Apr 9, 2020 | John A. Yarmuth D | Purchase | $1,001 - $15,000 | Mar 19, 2020 | filing ↗ |
| Mar 27, 2020 | John Curtis R | Purchase | $1,001 - $15,000 | Mar 27, 2020 | filing ↗ |
| Mar 23, 2020 | Zoe Lofgren D | Sale | $1,001 - $15,000 | Mar 23, 2020 | filing ↗ |
| Jan 3, 2020 | John B. Larson D | Sale | $1,001 - $15,000 | Dec 18, 2019 | filing ↗ |
| Dec 31, 2019 | Joe Courtney D | Purchase | $1,001 - $15,000 | Dec 31, 2019 | filing ↗ |
| Nov 8, 2019 | Kevin Hern R | Purchase | $1,001 - $15,000 | Nov 7, 2019 | filing ↗ |
| Jun 20, 2019 | Bradley S. Schneider D | Sale | $250,001 - $500,000 | Jun 20, 2019 | filing ↗ |
| Dec 31, 2018 | David B. McKinley R | Purchase | $1,001 - $15,000 | Dec 20, 2018 | filing ↗ |
| Sep 10, 2018 | Dwight Evans D | Purchase | $1,001 - $15,000 | Aug 17, 2018 | filing ↗ |
| Nov 1, 2017 | David B. McKinley R | Purchase | $1,001 - $15,000 | Oct 16, 2017 | filing ↗ |
| Jun 1, 2017 | Thomas J. Rooney R | Sale | $15,001 - $50,000 | May 15, 2017 | filing ↗ |
| Mar 29, 2017 | K. Michael Conaway R | Sale | $15,001 - $50,000 | Mar 24, 2017 | filing ↗ |
| Jan 31, 2017 | Dwight Evans D | Purchase | $15,001 - $50,000 | Dec 30, 2016 | filing ↗ |
| Dec 27, 2016 | David E. Price D | Purchase | $1,001 - $15,000 | Dec 19, 2016 | filing ↗ |
| Oct 20, 2016 | David E. Price D | Purchase | $1,001 - $15,000 | Oct 13, 2016 | filing ↗ |
| Aug 8, 2016 | David E. Price D | Purchase | $1,001 - $15,000 | Aug 3, 2016 | filing ↗ |
| Mar 10, 2016 | Thomas J. Rooney R | Purchase | $1,001 - $15,000 | Feb 10, 2016 | filing ↗ |
| Feb 21, 2016 | Thomas J. Rooney R | Purchase | $15,001 - $50,000 | Jan 21, 2016 | filing ↗ |
| Jan 21, 2016 | Thomas J. Rooney R | Purchase | $1,001 - $15,000 | Dec 21, 2016 | filing ↗ |
| Sep 2, 2015 | Scott H. Peters D | Sale | $15,001 - $50,000 | Sep 2, 2015 | filing ↗ |
| Jul 31, 2015 | Scott H. Peters D | Purchase | $15,001 - $50,000 | Jul 17, 2015 | filing ↗ |
| Aug 29, 2014 | David B. McKinley R | Purchase | $1,001 - $15,000 | Aug 19, 2014 | filing ↗ |
Most active TMO traders in Congress
RW
Richard W. Allen
5 trades
Zoe Lofgren
Democrat
4 trades
David B. McKinley
Republican
4 trades
Thomas J. Rooney
Republican
4 trades
Lisa McClain
Republican
3 trades
Valerie Hoyle
Democrat
3 trades
Kevin Hern
Republican
3 trades
Lois Frankel
Democrat
3 trades
Zoe Lofgren
Democrat
4 trades
David B. McKinley
Republican
4 trades
Thomas J. Rooney
Republican
4 trades
Lisa McClain
Republican
3 trades
Valerie Hoyle
Democrat
3 trades
Kevin Hern
Republican
3 trades
Lois Frankel
Democrat
3 trades
Source: US House Clerk Periodic Transaction Reports. Amounts are disclosed as ranges; estimates use range midpoints. Data may be delayed or contain filer errors. Updated Jun 29, 2026. Not investment advice.