TANDEM DIABETES CARE INC insider trading

TNDMNASDAQ

$16.52+0.02 (+0.12%)as of Oct 5, 2026

“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.” — Peter Lynch

Insider Trading vs Stock Price data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+10.1%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Open market purchase

Open market sell

Marker size reflects transaction size.

Net dollar flow · Buy / Sell balance

Premium

Q4 '24Q1 '25Q2 '25Q3 '25Q4 '25Q1 '26

Unlock quarterly net flow

Key players

KDKim D. BlickenstaffDirector0.2374%of company
JFJohn F. SheridanPRESIDENT & CEO0.2303%of company
LVLeigh VossellerEVP & CHIEF FINANCIAL OFFICER0.1116%of company
SMSusan MorrisonEVP & Chief Admin. Officer0.0759%of company
DADick AllenOfficer0.0732%of company
MDMark David NovaraEVP & CHIEF COMMERCIAL OFFICER0.0579%of company
CJChristopher J. TwomeyDirector0.0533%of company
EAElizabeth Anne GasserEVP, Chief Strategy Officer0.0496%of company
SMShannon Marie HansenEVP & Chief Legal Officer0.0483%of company
RCRick CarpenterEVP & Chief Technology Officer0.0462%of company

AI Activity Analysis

Premium

Coming soonAI reads of insider activity will appear here for Premium accounts.

Insider activity

Fromto

Company	Insider / role	Action	ΔOwn	Avg price	Amount
TNDM	Mark David NovaraEVP & CHIEF COMMERCIAL OFFICER	Open market sell$4.31K	-0.5%	$23.05	$4.31K	Mar 17, 2026	Mar 18, 2026
TNDM	Mark David NovaraEVP & CHIEF COMMERCIAL OFFICER	Open market sell$45.6	0.0%	$22.81	$45.6	Mar 5, 2026	Mar 9, 2026

End of history · 2 transactions