Wednesday, September 16, 2026Latest filing Sep 14, 2026

TNDM Congressional Stock Trades

Tandem Diabetes Care, Inc. - Common Stock (TNDM)

Last disclosed trade Sep 22

Every disclosed trade in TNDM by members of Congress under the STOCK Act, parsed by Coldpine. Informational only, sourced from public filings. Not investment advice.

Sample · the intelligence layer

Coldpine signal scoreA 0-1 composite from four weighted factors: disclosure speed, trade size, cluster activity (multiple members buying the same name), and the member’s track record. ≥ 0.65 is the high-conviction tier; ≥ 0.50 is moderate. Trades from trust-managed members are penalized (× 0.2 multiplier). It’s research, not a recommendation.

Gilbert Cisneros · Bought $TNDM · Mar 4 · $1K–$15K

0.34LOW
Disclosure speedx 0.250.10
Trade sizex 0.250.20
Cluster activityx 0.150.00
Track recordx 0.350.76

Every disclosed trade in the database gets this treatment: a four-factor score and a written read from Coldpine’s AI-based analysis. Informational only, not investment advice. Create a free account for every scored trade →

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4
Disclosed trades
3
Buys
1
Sells
2
Members trading

The record on $TNDM

Coldpine has parsed 4 disclosed trades in $TNDM by 2 members of Congress, drawn from 4 periodic transaction reports dated Aug 5, 2024 through Sep 22, 2025. All of them came from House members, all filed by Democrats.

Of the 4 trades with a known filing lag, every one was reported inside the STOCK Act's 45-day window. The median lag was 29 days. The longest was 37 days: a $TNDM purchase by Josh Gottheimer dated Aug 5, 2024, disclosed Sep 11, 2024. How late filing is measured across all of Congress is in the late-filers study.

3 of the 3 trades that list an account holder (100%) were reported under a spouse, dependent child, or joint account rather than the member directly.

Josh Gottheimer filed the most $TNDM purchases (2), and Josh Gottheimer the most sales (1).

Members who trade TNDM

Recent disclosed trades in TNDM

DateMemberTypeAmount
Sep 22Josh Gottheimer(NJ)buy$1K–$15K
Mar 19Josh Gottheimer(NJ)sell$1K–$15K
Mar 4Gilbert Cisneros(CA)buy$1K–$15K
Aug 5Josh Gottheimer(NJ)buy$1K–$15K

Data sourced from public STOCK Act disclosures. Coldpine is a publisher of intelligence on congressional disclosures, not an investment adviser. See full history and scores, free with an account →