Tandem Diabetes Care Inc
TNDM- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001438133
No open-market purchases or sales by Tandem Diabetes Care Inc insiders were filed in the last 90 days; 274 institutions reported holding it in 13F filings for Q2 2026, worth $1.19B in total; no superinvestor holds it.
Politicians who traded TNDM
Since 2020, newest trade first. Shares and options by default, including trades reported under an earlier ticker.
- Trades
- 6
- Filings
- 6
- Politicians
- 3
- Buys / sells
- 4 / 2
- Estimated volume
- $48.0K
- Sum of range midpoints
| Politician | Trades | Buys / sells | Est. volume | Last traded | Last filed |
|---|---|---|---|---|---|
 Gilbert Ray Cisneros, Jr. House · CA | 2 | 2 / 0 | $16.0K | Mar 3, 2026 | Apr 7, 2026 |
 Josh Gottheimer House · NJ | 3 | 2 / 1 | $24.0K | Sep 22, 2025 | Oct 15, 2025 |
 Daniel S. Goldman House · NY | 1 | 0 / 1 | $8.00K | Jul 12, 2023 | Aug 13, 2023 |
Trades
Reported trades in Tandem Diabetes Care Inc, newest filings first.
| Politician | Asset | Type | Owner | Traded | Filed | Delay | Amount | Source |
|---|---|---|---|---|---|---|---|---|
Gilbert Ray Cisneros, Jr. House · CA | TNDMTandem Diabetes Care, Inc. - Common Stock | Buy | Self | Mar 3, 2026 | Apr 7, 2026 | 35 days | $1K-$15K | Filing |
Josh Gottheimer House · NJ | TNDMTandem Diabetes Care, Inc. - Common Stock | Buy | Joint | Sep 22, 2025 | Oct 15, 2025 | 23 days | $1K-$15K | Filing |
Josh Gottheimer House · NJ | TNDMTandem Diabetes Care, Inc. - Common Stock | Sell | Joint | Mar 19, 2025 | Apr 10, 2025 | 22 days | $1K-$15K | Filing |
Gilbert Ray Cisneros, Jr. House · CA | TNDMTandem Diabetes Care, Inc. - Common Stock | Buy | Self | Mar 4, 2025 | Apr 7, 2025 | 34 days | $1K-$15K | Filing |
Josh Gottheimer House · NJ | TNDMTandem Diabetes Care, Inc. - Common Stock | Buy | Joint | Aug 5, 2024 | Sep 11, 2024 | 37 days | $1K-$15K | Filing |
Daniel S. Goldman House · NY | TNDMTandem Diabetes Care, Inc. | Sell | Self | Jul 12, 2023 | Aug 13, 2023 | 32 days | $1K-$15K | Filing |
Source: U.S. House Clerk and Senate Office of Public Records (eFD). Amounts are the ranges filers report. Profiles, committees and photos: the unitedstates project (public domain). District maps: U.S. Census Bureau.