Congress WatchTNDM stock trades by members of Congress
Tandem Diabetes Care, Inc. - Common Stock: 4 members of Congress disclosed 8 transactions between 2015-06-07 and 2026-10-12, 5 purchases and 3 sales.
Activity by year
Transactions by the year the report was filed.
TNDM price and Congress trades
Daily closing price (split-adjusted). Dots mark days members of Congress filed trades in TNDM: green when more were purchases, red when more were sales. Use + and − (or Ctrl/⌘ + scroll) to zoom and drag to pan. Hover a month in the heatmap below to highlight it here, or click it to zoom to that month.
Congress buying and selling by month
Purchases and sales of TNDM reported by members of the House and Senate.
Green months had more purchases, red months more sales, teal an even split; darker means more trades. Months are by filing date. Senate filings after August 2026 and scanned House filings are not fully covered, so early years can look quieter than they were.
Who traded TNDM
| Politician | Trades | Buys | Sales | Last filing |
|---|---|---|---|---|
| Gilbert Cisneros | 3 | 3 | 0 | 2026-10-12 |
| Josh Gottheimer | 3 | 2 | 1 | 2025-10-15 |
| Thomas MacArthur | 1 | 0 | 1 | 2015-06-07 |
| Daniel Goldman | 1 | 0 | 1 | 2023-08-13 |
Disclosed transactions
Download all transactions as CSV
| Filed | Traded | Politician | Type | Amount | Filing |
|---|---|---|---|---|---|
| 2026-10-12 | 2026-09-29 | Gilbert Cisneros | Buy | $1,001 - $15,000 | Source |
| 2026-04-07 | 2026-03-03 | Gilbert Cisneros | Buy | $1,001 - $15,000 | Source |
| 2025-10-15 | 2025-09-22 | Josh Gottheimer | Buy | $1,001 - $15,000 | Source |
| 2025-04-10 | 2025-03-19 | Josh Gottheimer | Sale | $1,001 - $15,000 | Source |
| 2025-04-07 | 2025-03-04 | Gilbert Cisneros | Buy | $1,001 - $15,000 | Source |
| 2024-09-11 | 2024-08-05 | Josh Gottheimer | Buy | $1,001 - $15,000 | Source |
| 2023-08-13 | 2023-07-12 | Daniel Goldman | Sale | $1,001 - $15,000 | Source |
| 2015-06-07 | 2015-05-27 | Thomas MacArthur | Sale | $1,001 - $15,000 | Source |
Stocks traded by the same politicians
- ACN Accenture plc Class A Ordinary Shares, 4 shared
- ALB Albemarle Corporation Common Stock, 4 shared
- AMZN Amazon.com, Inc. - Common Stock, 4 shared
- ASML ASML Holding N.V. - New York Registry Shares, 4 shared
- AVGO Broadcom Inc. - Common Stock, 4 shared
- BIIB Biogen Inc. - Common Stock, 4 shared
- BMRN BioMarin Pharmaceutical Inc., 4 shared
- CB Chubb Limited Common Stock, 4 shared
- COST Costco Wholesale Corporation - Common Stock, 4 shared
- CRM Salesforce, Inc. Common Stock, 4 shared
Common questions
- Are members of Congress buying or selling TNDM?
- 4 members of Congress disclosed 8 transactions in Tandem Diabetes Care, Inc. - Common Stock (TNDM) between 2015-06-07 and 2026-10-12: 5 purchases and 3 sales.
- How active was Congress in TNDM recently?
- In 2026 filings, 2 transactions in TNDM were disclosed: 2 purchases and 0 sales.
- Which members of Congress trade TNDM?
- The most active in TNDM are Gilbert Cisneros (3), Josh Gottheimer (3) and Thomas MacArthur (1), by number of disclosed transactions. 4 members in all have traded it.