David R Walt Quanterix Corp (QTRX) insider trading activity

David R Walt is of Quanterix Corp. Currently has a direct ownership of 1.87 Million shares of QTRX, which is worth approximately $10.7 Million. The most recent transaction as insider was on Oct 01, 2025, when has been sold 2,594 shares (Common Stock) at a price of $5.54 per share, resulting in proceeds of $14,370. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 1.87M

0.14% 3M change

25.84% 12M change

Total Value Held $10.7 Million

DAVID R WALT Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Oct 01 2025	BUY Grant, award, or other acquisition	$14,370 $5.54 p/Share	2,594 Added 0.14%	1,871,675 Common Stock
Jul 01 2025	BUY Grant, award, or other acquisition	$14,370 $6.69 p/Share	2,148 Added 0.11%	1,869,081 Common Stock
Jun 13 2025	BUY Open market or private purchase	$761,298 $6.14 p/Share	123,990 Added 6.23%	1,866,933 Common Stock
Jun 12 2025	BUY Open market or private purchase	$224,342 $6.23 p/Share	36,010 Added 2.02%	1,742,943 Common Stock
Jun 09 2025	BUY Open market or private purchase	$417,219 $5.34 p/Share	78,131 Added 4.38%	1,706,933 Common Stock
Jun 06 2025	BUY Open market or private purchase	$716,048 $5.43 p/Share	131,869 Added 7.49%	1,628,802 Common Stock
Apr 01 2025	BUY Grant, award, or other acquisition	$14,358 $6.66 p/Share	2,156 Added 0.14%	1,496,933 Common Stock
Jan 02 2025	BUY Grant, award, or other acquisition	-	7,435 Added 0.49%	1,494,777 Common Stock
Aug 20 2024	BUY Open market or private purchase	$624,630 $13.29 p/Share	47,000 Added 3.06%	1,487,342 Common Stock
Jan 02 2024	BUY Grant, award, or other acquisition	-	2,947 Added 0.2%	1,442,342 Common Stock
Mar 09 2023	SELL Bona fide gift	-	1,000 Reduced 0.07%	1,440,342 Common Stock
Jan 03 2023	BUY Grant, award, or other acquisition	-	8,083 Added 0.56%	1,439,395 Common Stock
Oct 12 2022	SELL Bona fide gift	-	1,000 Reduced 0.07%	1,441,342 Common Stock
Aug 10 2022	BUY Open market or private purchase	$1,293,000 $8.62 p/Share	150,000 Added 9.49%	1,431,312 Common Stock
Jan 03 2022	BUY Grant, award, or other acquisition	-	2,668 Added 0.21%	1,281,312 Common Stock
Jan 04 2021	BUY Grant, award, or other acquisition	-	2,270 Added 0.18%	1,278,644 Common Stock

DRW

David R Walt

Billerica, MA

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