Congress Trades in Taiwan Semiconductor Manufacturing Company Ltd. (TSM)
24 members of Congress have disclosed trading TSM.
Total trades
50
Purchases
30
Sales
20
Members
24
Est. volume
$1.5M
Last traded
Oct 9, 2026
24 members of Congress have disclosed trading Taiwan Semiconductor Manufacturing Company Ltd. (TSM), with 50 transactions in total — 30 purchases and 20 sales worth an estimated $1.5M at range midpoints, leaning toward buying. The most active TSM trader is Cleo Fields (10 disclosures). The most recent disclosed TSM trade was on Oct 9, 2026.
Corporate insiders in TSM
It's not just Congress — here's what TSM's own executives and directors have done with the stock recently, from SEC Form 4 filings.
Insider buys
100
Insider sells
0
Bought
$683,122
Sold
$0
| Date | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| Oct 7, 2026 | Chuang Tzu-Sou | VP | Buy | 46 | $3,652 |
| Oct 7, 2026 | Cao Min | VP | Buy | 51 | $4,049 |
| Oct 7, 2026 | Chin Yung-Pei | EVP and Co-COO | Buy | 67 | $5,319 |
| Oct 7, 2026 | Chang Tzonz-Sheng | SVP | Buy | 51 | $4,049 |
| Oct 7, 2026 | Fang Shu-Hua | SVP and GC | Buy | 53 | $4,208 |
| Oct 7, 2026 | Chuang Juiping | VP | Buy | 46 | $3,652 |
| Oct 7, 2026 | Chen Pei-Hung | VP | Buy | 43 | $3,414 |
| Oct 7, 2026 | Chen Chih-Ho | Controller | Buy | 31 | $2,461 |
| Oct 7, 2026 | Yuan Lipen | VP | Buy | 40 | $3,176 |
| Oct 7, 2026 | Yeap Choh Fei | SVP | Buy | 52 | $4,128 |
| Oct 7, 2026 | Zhang Kevin Xiaoqiang | SVP and Deputy Co-COO | Buy | 59 | $4,684 |
| Oct 7, 2026 | Yoo Chue-San | VP | Buy | 50 | $3,970 |
Every disclosed TSM trade
| Disclosed | Politician | Type | Amount | Traded | |
|---|---|---|---|---|---|
| Oct 9, 2026 | Cleo Fields D | Purchase | $1,001 - $15,000 | Oct 9, 2026 | filing ↗ |
| Oct 9, 2026 | Gilbert Cisneros D | Purchase | $1,001 - $15,000 | Sep 22, 2026 | filing ↗ |
| Sep 15, 2026 | Richard W. Allen | Purchase | $1,001 - $15,000 | Aug 12, 2026 | filing ↗ |
| Jul 10, 2026 | Cleo Fields D | Purchase | $1,001 - $15,000 | Jul 10, 2026 | filing ↗ |
| Jun 8, 2026 | Richard W. Allen | Purchase | $1,001 - $15,000 | May 8, 2026 | filing ↗ |
| Apr 9, 2026 | Cleo Fields D | Purchase | $1,001 - $15,000 | Apr 9, 2026 | filing ↗ |
| Mar 6, 2026 | Gilbert Cisneros D | Purchase | $1,001 - $15,000 | Feb 26, 2026 | filing ↗ |
| Mar 5, 2026 | Richard W. Allen | Purchase | $1,001 - $15,000 | Feb 19, 2026 | filing ↗ |
| Jan 8, 2026 | Cleo Fields D | Purchase | $1,001 - $15,000 | Jan 8, 2026 | filing ↗ |
| Nov 1, 2025 | Lisa McClain R | Sale | $1,001 - $15,000 | Oct 31, 2025 | filing ↗ |
| Oct 31, 2025 | Jared Moskowitz D | Purchase | $1,001 - $15,000 | Oct 10, 2025 | filing ↗ |
| Oct 23, 2025 | Cleo Fields D | Purchase | $100,001 - $250,000 | Oct 23, 2025 | filing ↗ |
| Sep 11, 2025 | Valerie Hoyle D | Purchase | $1,001 - $15,000 | May 6, 2025 | filing ↗ |
| Aug 18, 2025 | Cleo Fields D | Purchase | $15,001 - $50,000 | Aug 15, 2025 | filing ↗ |
| Aug 14, 2025 | Cleo Fields D | Purchase | $1,001 - $15,000 | Aug 13, 2025 | filing ↗ |
| Aug 13, 2025 | Lisa McClain R | Purchase | $1,001 - $15,000 | Jun 9, 2025 | filing ↗ |
| Aug 11, 2025 | Julia Letlow R | Purchase | $15,001 - $50,000 | Oct 23, 2024 | filing ↗ |
| Aug 11, 2025 | Lisa McClain R | Purchase | $15,001 - $50,000 | Mar 11, 2024 | filing ↗ |
| Aug 4, 2025 | Cleo Fields D | Purchase | $100,001 - $250,000 | Aug 1, 2025 | filing ↗ |
| Aug 4, 2025 | Cleo Fields D | Purchase | $1,001 - $15,000 | Aug 1, 2025 | filing ↗ |
| Jun 25, 2025 | Cleo Fields D | Purchase | $100,001 - $250,000 | Jun 25, 2025 | filing ↗ |
| Apr 28, 2025 | Bruce Westerman R | Sale | $1,001 - $15,000 | Apr 21, 2025 | filing ↗ |
| Mar 3, 2025 | Rob Bresnahan | Sale | $1,001 - $15,000 | Mar 3, 2025 | filing ↗ |
| Aug 4, 2023 | Daniel Goldman | Sale | $50,001 - $100,000 | Jul 10, 2023 | filing ↗ |
| Oct 31, 2021 | Thomas Suozzi D | Sale | $15,001 - $50,000 | Oct 6, 2021 | filing ↗ |
| Oct 13, 2021 | Katherine M. Clark D | Sale | $1,001 - $15,000 | Sep 16, 2021 | filing ↗ |
| Jun 30, 2021 | Thomas Suozzi D | Purchase | $15,001 - $50,000 | Jun 11, 2021 | filing ↗ |
| Jun 18, 2021 | Marjorie Taylor Greene R | Purchase | $1,001 - $15,000 | Jun 16, 2021 | filing ↗ |
| May 11, 2021 | Sara Jacobs D | Sale | $50,001 - $100,000 | Apr 9, 2021 | filing ↗ |
| Mar 10, 2021 | Pete Sessions R | Purchase | $1,001 - $15,000 | Mar 10, 2021 | filing ↗ |
| Mar 1, 2021 | Katherine M. Clark D | Sale | $1,001 - $15,000 | Feb 8, 2021 | filing ↗ |
| Feb 19, 2021 | Peter Meijer R | Sale | $50,001 - $100,000 | Feb 17, 2021 | filing ↗ |
| Jan 22, 2021 | Marjorie Taylor Greene R | Purchase | $1,001 - $15,000 | Jan 22, 2021 | filing ↗ |
| Dec 28, 2020 | Katherine M. Clark D | Sale | $1,001 - $15,000 | Nov 5, 2020 | filing ↗ |
| Nov 27, 2020 | Katherine M. Clark D | Sale | $1,001 - $15,000 | Oct 22, 2020 | filing ↗ |
| Jun 30, 2020 | Sean Patrick Maloney D | Sale | $1,001 - $15,000 | Jun 26, 2020 | filing ↗ |
| May 6, 2020 | Josh Gottheimer D | Purchase | $1,001 - $15,000 | Apr 17, 2020 | filing ↗ |
| Mar 16, 2020 | Greg Gianforte R | Sale | $50,001 - $100,000 | Mar 13, 2020 | filing ↗ |
| Jan 21, 2020 | Greg Gianforte R | Sale | $50,001 - $100,000 | Jan 13, 2020 | filing ↗ |
| Jan 6, 2020 | Greg Gianforte R | Purchase | $50,001 - $100,000 | Jan 3, 2020 | filing ↗ |
| Dec 9, 2019 | Katherine M. Clark D | Sale | $1,001 - $15,000 | Nov 5, 2019 | filing ↗ |
| Jun 30, 2019 | Donna Shalala D | Sale | $15,001 - $50,000 | Jun 24, 2019 | filing ↗ |
| Jun 24, 2019 | Katherine M. Clark D | Purchase | $1,001 - $15,000 | May 12, 2019 | filing ↗ |
| Jun 18, 2019 | Mikie Sherrill D | Sale | $1,001 - $15,000 | May 28, 2019 | filing ↗ |
| Apr 30, 2019 | Donna Shalala D | Purchase | $1,001 - $15,000 | Apr 11, 2019 | filing ↗ |
| Apr 29, 2019 | Greg Gianforte R | Purchase | $15,001 - $50,000 | Apr 24, 2019 | filing ↗ |
| Mar 25, 2019 | Nicholas Van Taylor | Sale | $15,001 - $50,000 | Mar 25, 2019 | filing ↗ |
| Feb 28, 2019 | Donna Shalala D | Purchase | $1,001 - $15,000 | Feb 15, 2019 | filing ↗ |
| Sep 15, 2016 | K. Michael Conaway R | Sale | $1,001 - $15,000 | Sep 12, 2016 | filing ↗ |
| Feb 1, 2015 | Thomas MacArthur R | Sale | $1,001 - $15,000 | Jan 27, 2015 | filing ↗ |
Most active TSM traders in Congress
Cleo Fields
Democrat
10 trades
Katherine M. Clark
Democrat
6 trades
Greg Gianforte
Republican
4 trades
RW
Richard W. Allen
3 trades
Lisa McClain
Republican
3 trades
Donna Shalala
Democrat
3 trades
Gilbert Cisneros
Democrat
2 trades
Thomas Suozzi
Democrat
2 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 Oct 24, 2026. Not investment advice.