Are insiders buying TNDM stock?

Yes — 4 distinct insiders have bought TNDM (TANDEM DIABETES CARE INC) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Aug 11, 2025.

How much TNDM stock have insiders bought?

Insiders have bought a combined $455.0K of TNDM across 4 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in TNDM?

A cluster buy is two or more distinct TANDEM DIABETES CARE INC insiders — officers, directors, or 10% owners — each buying TNDM on the open market within a rolling window. TNDM has 1 detected cluster buy to date.

Where does this TNDM insider trading data come from?

Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

TNDM insider buying

1 cluster buy

TANDEM DIABETES CARE INC · Healthcare

When two or more insiders at TANDEM DIABETES CARE INC buy TNDM on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in TNDM plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.

Clusters

Distinct insiders

Total bought

$455.0K

Market cap

$1.1B

Detected clusters

Aug 8 – Aug 11, 2025
Detected Aug 11, 2025
High conviction2 insiders
Total bought
$251.7K
Market cap
$1.1B

All notable open-market buys in TNDM

Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.

Date	Insider	Shares	Price	Value	Filing
Aug 11, 2025	Sheridan John Fcluster Director, PRESIDENT & CEO	10,000	$10.23	$102.3K	SEC ↗
Aug 8, 2025	Vosseller Leighcluster EVP & CHIEF FINANCIAL OFFICER	13,720	$10.89	$149.4K	SEC ↗
Mar 7, 2025	Kyrillos Jean-Claude EVP & Chief Operating Officer	10,538	$18.12	$190.9K	SEC ↗
Nov 15, 2024	Novara Mark David EVP & CHIEF COMMERCIAL OFFICER	532	$23.24	$12.4K	SEC ↗

More Healthcare stocks with insider cluster buys

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TNDM insider buying — FAQ

Are insiders buying TNDM stock?: Yes — 4 distinct insiders have bought TNDM (TANDEM DIABETES CARE INC) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Aug 11, 2025.
How much TNDM stock have insiders bought?: Insiders have bought a combined $455.0K of TNDM across 4 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in TNDM?: A cluster buy is two or more distinct TANDEM DIABETES CARE INC insiders — officers, directors, or 10% owners — each buying TNDM on the open market within a rolling window. TNDM has 1 detected cluster buy to date.
Where does this TNDM insider trading data come from?: Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

How we track insider buying in TNDM

We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy TNDM within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?

This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding TNDM.