WALT DAVID R

Director · Quanterix Corp

Every open-market stock purchase WALT DAVID R has reported to the SEC on Form 4 that met our signal bar, parsed straight from the filings. This page tracks where those buys landed inside insider clusters and how the prices paid compare to where the stock trades now.

Total bought

$2.7M

Open-market buys

Companies

Last buy

Jun 13, 2025

Where the buys stand today

QTRX
Quanterix Corp
5 purchases totalling $2.7M at an average of $6.58 per share. See all insider buying in QTRX →
Avg price paid
$6.58
Latest price
—
Market cap
$204.4M

Cluster participation

Qualifying buys grouped with other insiders buying the same stock — the pattern this site exists to catch.

All reported buys

Date	Ticker	Shares	Price	Value	Filing
Jun 13, 2025	QTRXcluster	123,990	$6.14	$761.3K	SEC ↗
Jun 12, 2025	QTRXcluster	36,010	$6.23	$224.3K	SEC ↗
Jun 9, 2025	QTRXcluster	78,131	$5.34	$417.2K	SEC ↗
Jun 6, 2025	QTRXcluster	131,869	$5.43	$716.0K	SEC ↗
Aug 20, 2024	QTRXcluster	47,000	$13.29	$624.6K	SEC ↗

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About this data

Figures are parsed from WALT DAVID R's Form 4 filings on SEC EDGAR (CIK 1205236) and cover open-market purchases (transaction code P) — grants, option exercises, and sales are excluded, which is why totals here can differ from raw filing counts. Every row links to its source document.

This page is informational and reflects public filing data. It is not investment advice.