MarketPeel
Insider Trading Intelligence
EVP & CHIEF FINANCIAL OFFICER
Fri, Aug 8, 2025
Aug 8
bought $149.40k of TNDM
13,720 shares @ $10.89
Increased holdings by +115.70%
30th largest trade (out of 164)
Abnormally LargeCluster Buy
Trade made by an officer
Part of a cluster of 10 transactions by 6 insiders
Unscheduled trade
35% win rate · -5.1% median edge vs SPY (26 trades, 90-day)
Abnormally large trade for this company
Price 55% below 200-day moving average
Small Cap stock — insider trades carry more weight
TNDMTANDEM DIABETES CARE INC
Health CareMedical Devices
1D0.00%
1W-5.67%
1M-21.23%
3M
6M
1Y

Recent insider activity at TNDM

Full TNDM profile →Vosseller Leigh’s trading history →
FREE · DAILY · 6 AM ET

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback