TNDMTNDMTandem Diabetes Care, Inc. - Common Stock
4 members of Congress disclosed 7 transactions in TNDM between May 27, 2015 and Mar 3, 2026.
Price, with congressional trades marked
TNDM $22.39latest
+71%
Josh Gottheimer, Democrat
Josh Gottheimer, Democrat-6%
Gilbert Ray Cisneros, Jr., Democrat
Gilbert Ray Cisneros, Jr., DemocratMarked trades (2)
| Traded | Member | Amount | Adj. close | TNDM since | SPY since | Difference | |
|---|---|---|---|---|---|---|---|
| Sep 22, 2025 | Josh Gottheimer (D) | buy | ~$8K | $13.05 | +71.5% | +16.9% | +54.5% |
| Mar 3, 2026 | Gilbert Ray Cisneros, Jr. (D) | buy | ~$8K | $23.75 | -5.7% | +14.3% | -20.0% |
Prices are dividend- and split-adjusted, so “adj. close” is not necessarily what the stock printed that day. The horizon runs to the latest close, so rows with different trade dates are not comparable to each other — and none of these is the benchmark-relative, fixed-window alpha the leaderboard ranks on.
7
Transactions
4 buys · 3 sells
4
Members
$56K
Est. volume
3D / 1R
Party split
distinct members
Who traded it
| Member | Trades | Buys / Sells | Est. volume |
|---|---|---|---|
| Josh GottheimerD-NJ | 3 | 2 / 1 | ~$24K |
| Gilbert Ray Cisneros, Jr.D-CA | 2 | 2 / 0 | ~$16K |
| Daniel S. GoldmanD-NY | 1 | 0 / 1 | ~$8K |
| Thomas MacArthurR-NJ | 1 | 0 / 1 | ~$8K |
Transactions
7| Member | Type | Amount | Traded | Disclosed | Source |
|---|---|---|---|---|---|
| Buy | $1K – $15K | Mar 3, 2026 | Apr 7, 2026 35d | filing | |
| Buyjoint | $1K – $15K | Sep 22, 2025 | Oct 15, 2025 23d | filing | |
| Selljoint | $1K – $15K | Mar 19, 2025 | Apr 10, 2025 22d | filing | |
| Buy | $1K – $15K | Mar 4, 2025 | Apr 7, 2025 34d | filing | |
| Buyjoint | $1K – $15K | Aug 5, 2024 | Sep 11, 2024 37d | filing | |
| Sell | $1K – $15K | Jul 12, 2023 | Aug 13, 2023 32d | filing | |
| Selljoint | $1K – $15K | May 27, 2015 | Jun 7, 2015 11d | filing |
Disclosures are filed up to 45 days after a trade, so this is a record rather than a signal. Amounts are bracket midpoints. Symbols are recorded as they existed on the trade date and mapped forward where a company was renamed.