QTRX

insider transactions

Quanterix Corp — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Net shares · 90d

+3.5K

3.5K buy · 0 sell

Net value · 90d

$9.7K

$9.7K in · $0 out

Sentiment · 90d

Net buying

100% buying · 0% selling

Open-market trades · 90d

3.5K buy · 0 sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

Transactions · 90d

Open-market Buys Sells All types

Exercise·M
Jun 15, 26

Miller Michael Francis

Chief Technology Officer

$0

1.6K sh · 5 lots

Own +6%
Other·F
Jun 15, 26

Miller Michael Francis

Chief Technology Officer

$1.4K

467 sh · $3.10 avg · 5 lots

Own -1%
Exercise·M
Jun 15, 26

Miller Michael Francis

Chief Technology Officer

—

1.6K sh · 5 lots

Own +5%
Exercise·M
May 31, 26

Miller Michael Francis

Chief Technology Officer

$0

130 sh

Own +45%
Other·F
May 31, 26

Miller Michael Francis

Chief Technology Officer

$119

39 sh · $3.06

Own -0%
Exercise·M
May 31, 26

Miller Michael Francis

Chief Technology Officer

—

130 sh

Own +0%
Exercise·M
May 15, 26

Sriram Vandana KEY

Chief Financial Officer

$0

1.8K sh · 3 lots

Own +6%
Other·F
May 15, 26

Sriram Vandana KEY

Chief Financial Officer

$1.5K

548 sh · $2.75 avg · 3 lots

Own -2%
Exercise·M
May 15, 26

Sriram Vandana KEY

Chief Financial Officer

—

1.8K sh · 3 lots

Own +6%
Exercise·M
May 15, 26

Miller Michael Francis

Chief Technology Officer

$0

1.6K sh · 5 lots

Own +6%
Other·F
May 15, 26

Miller Michael Francis

Chief Technology Officer

$1.3K

467 sh · $2.75 avg · 5 lots

Own -1%
Exercise·M
May 15, 26

Miller Michael Francis

Chief Technology Officer

—

1.6K sh · 5 lots

Own +5%
Buy·P
May 12, 26

Benjamin Meadows

Chief Commercial Officer

$9.7K

3.5K sh · $2.77

Own New
Exercise·M
Apr 30, 26

Miller Michael Francis

Chief Operating Officer

$0

130 sh

Own +31%
Other·F
Apr 30, 26

Miller Michael Francis

Chief Operating Officer

$122

39 sh · $3.13

Own -0%
Exercise·M
Apr 30, 26

Miller Michael Francis

Chief Operating Officer

—

130 sh

Own +0%
Exercise·M
Apr 15, 26

Sriram Vandana KEY

Chief Financial Officer

$0

1.8K sh · 3 lots

Own +5%
Other·F
Apr 15, 26

Sriram Vandana KEY

Chief Financial Officer

$2.0K

548 sh · $3.60 avg · 3 lots

Own -2%
Exercise·M
Apr 15, 26

Sriram Vandana KEY

Chief Financial Officer

—

1.8K sh · 3 lots

Own +7%
Exercise·M
Apr 15, 26

Miller Michael Francis

Chief Operating Officer

$0

1.6K sh · 5 lots

Own +6%
Other·F
Apr 15, 26

Miller Michael Francis

Chief Operating Officer

$1.7K

467 sh · $3.60 avg · 5 lots

Own -1%
Exercise·M
Apr 15, 26

Miller Michael Francis

Chief Operating Officer

—

1.6K sh · 5 lots

Own +5%
Grant·A
Apr 1, 26

Mendel Scott

Director

$0

4.3K sh

Own +52%
Grant·A
Apr 1, 26

DONNELLY WILLIAM P KEY

Executive Chair

$0

6.2K sh

Own +4%
Exercise·M
Mar 31, 26

Miller Michael Francis

Chief Operating Officer

$0

229 sh · 2 lots

Own +51%
Other·F
Mar 31, 26

Miller Michael Francis

Chief Operating Officer

$243

69 sh · $3.52 avg · 2 lots

Own -0%
Exercise·M
Mar 31, 26

Miller Michael Francis

Chief Operating Officer

—

229 sh · 2 lots

Own +1%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Jun 15, 2026	Miller Michael Francis	Chief Technology Officer	Exercise M	1.6K5 lots	+6%	—	$0
Jun 15, 2026	Miller Michael Francis	Chief Technology Officer	Other F	4675 lots	-1%	$3.10 avg	$1.4K
Jun 15, 2026	Miller Michael Francis	Chief Technology Officer	Exercise M	1.6K5 lots	+5%	—	—
May 31, 2026	Miller Michael Francis	Chief Technology Officer	Exercise M	130	+45%	—	$0
May 31, 2026	Miller Michael Francis	Chief Technology Officer	Other F	39	-0%	$3.06	$119
May 31, 2026	Miller Michael Francis	Chief Technology Officer	Exercise M	130	+0%	—	—
May 15, 2026	Sriram Vandana KEY	Chief Financial Officer	Exercise M	1.8K3 lots	+6%	—	$0
May 15, 2026	Sriram Vandana KEY	Chief Financial Officer	Other F	5483 lots	-2%	$2.75 avg	$1.5K
May 15, 2026	Sriram Vandana KEY	Chief Financial Officer	Exercise M	1.8K3 lots	+6%	—	—
May 15, 2026	Miller Michael Francis	Chief Technology Officer	Exercise M	1.6K5 lots	+6%	—	$0
May 15, 2026	Miller Michael Francis	Chief Technology Officer	Other F	4675 lots	-1%	$2.75 avg	$1.3K
May 15, 2026	Miller Michael Francis	Chief Technology Officer	Exercise M	1.6K5 lots	+5%	—	—
May 12, 2026	Benjamin Meadows	Chief Commercial Officer	Buy P	3.5K	New	$2.77	$9.7K
Apr 30, 2026	Miller Michael Francis	Chief Operating Officer	Exercise M	130	+31%	—	$0
Apr 30, 2026	Miller Michael Francis	Chief Operating Officer	Other F	39	-0%	$3.13	$122
Apr 30, 2026	Miller Michael Francis	Chief Operating Officer	Exercise M	130	+0%	—	—
Apr 15, 2026	Sriram Vandana KEY	Chief Financial Officer	Exercise M	1.8K3 lots	+5%	—	$0
Apr 15, 2026	Sriram Vandana KEY	Chief Financial Officer	Other F	5483 lots	-2%	$3.60 avg	$2.0K
Apr 15, 2026	Sriram Vandana KEY	Chief Financial Officer	Exercise M	1.8K3 lots	+7%	—	—
Apr 15, 2026	Miller Michael Francis	Chief Operating Officer	Exercise M	1.6K5 lots	+6%	—	$0
Apr 15, 2026	Miller Michael Francis	Chief Operating Officer	Other F	4675 lots	-1%	$3.60 avg	$1.7K
Apr 15, 2026	Miller Michael Francis	Chief Operating Officer	Exercise M	1.6K5 lots	+5%	—	—
Apr 1, 2026	Mendel Scott	Director	Grant A	4.3K	+52%	—	$0
Apr 1, 2026	DONNELLY WILLIAM P KEY	Executive Chair	Grant A	6.2K	+4%	—	$0
Mar 31, 2026	Miller Michael Francis	Chief Operating Officer	Exercise M	2292 lots	+51%	—	$0
Mar 31, 2026	Miller Michael Francis	Chief Operating Officer	Other F	692 lots	-0%	$3.52 avg	$243
Mar 31, 2026	Miller Michael Francis	Chief Operating Officer	Exercise M	2292 lots	+1%	—	—

Buy Sell Non-market (grant · exercise · gift)

About QTRX insider trading

This page tracks insider transactions for Quanterix Corp (QTRX) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.