QTRX
insider transactionsQuanterix Corp — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Cluster buy signal: Multiple insiders at the same company buying around the same time — often a stronger signal than a single buy. 2 different insiders made open-market purchases in the last 365 days, totalling $29.6K.
Net shares · 365d
+7.7K
7.7K buy · 0 sell
Net value · 365d
$29.6K
$29.6K in · $0 out
Sentiment · 365d
Net buying
100% buying · 0% selling
Open-market trades · 365d
2
7.7K buy · 0 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
Transactions · 365d
-
Exercise·M
Chief Technology Officer
$0
1.6K sh · 5 lots
Own +6%
-
Other·F
Chief Technology Officer
$1.4K
467 sh · $3.10 avg · 5 lots
Own -1%
-
Exercise·M
Chief Technology Officer
—
1.6K sh · 5 lots
Own +5%
-
Exercise·M
Chief Technology Officer
$0
130 sh
Own +45%
-
Other·F
Chief Technology Officer
$119
39 sh · $3.06
Own -0%
-
Exercise·M
Chief Technology Officer
—
130 sh
Own +0%
-
Exercise·M
Sriram Vandana KEY
Chief Financial Officer
$0
1.8K sh · 3 lots
Own +6%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$1.5K
548 sh · $2.75 avg · 3 lots
Own -2%
-
Exercise·M
Sriram Vandana KEY
Chief Financial Officer
—
1.8K sh · 3 lots
Own +6%
-
Exercise·M
Chief Technology Officer
$0
1.6K sh · 5 lots
Own +6%
-
Other·F
Chief Technology Officer
$1.3K
467 sh · $2.75 avg · 5 lots
Own -1%
-
Exercise·M
Chief Technology Officer
—
1.6K sh · 5 lots
Own +5%
-
Buy·P
Chief Commercial Officer
$9.7K
3.5K sh · $2.77
Own New
-
Exercise·M
Chief Operating Officer
$0
130 sh
Own +31%
-
Other·F
Chief Operating Officer
$122
39 sh · $3.13
Own -0%
-
Exercise·M
Chief Operating Officer
—
130 sh
Own +0%
-
Exercise·M
Sriram Vandana KEY
Chief Financial Officer
$0
1.8K sh · 3 lots
Own +5%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$2.0K
548 sh · $3.60 avg · 3 lots
Own -2%
-
Exercise·M
Sriram Vandana KEY
Chief Financial Officer
—
1.8K sh · 3 lots
Own +7%
-
Exercise·M
Chief Operating Officer
$0
1.6K sh · 5 lots
Own +6%
-
Other·F
Chief Operating Officer
$1.7K
467 sh · $3.60 avg · 5 lots
Own -1%
-
Exercise·M
Chief Operating Officer
—
1.6K sh · 5 lots
Own +5%
-
Grant·A
Director
$0
4.3K sh
Own +52%
-
Grant·A
Executive Chair
$0
6.2K sh
Own +4%
-
Exercise·M
Chief Operating Officer
$0
229 sh · 2 lots
Own +51%
-
Other·F
Chief Operating Officer
$243
69 sh · $3.52 avg · 2 lots
Own -0%
-
Exercise·M
Chief Operating Officer
—
229 sh · 2 lots
Own +1%
-
Exercise·M
Sriram Vandana KEY
Chief Financial Officer
$0
1.8K sh · 3 lots
Own +18%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$3.0K
645 sh · $4.72 avg · 3 lots
Own -2%
-
Exercise·M
Sriram Vandana KEY
Chief Financial Officer
—
1.8K sh · 3 lots
Own +7%
-
Exercise·M
Chief Operating Officer
$0
1.6K sh · 5 lots
Own +21%
-
Other·F
Chief Operating Officer
$2.6K
549 sh · $4.72 avg · 5 lots
Own -2%
-
Exercise·M
Chief Operating Officer
—
1.6K sh · 5 lots
Own +5%
-
Exercise·M
Sriram Vandana KEY
Chief Financial Officer
$0
777 sh · 2 lots
Own +20%
-
Grant·A
Sriram Vandana KEY
Chief Financial Officer
$0
149.8K sh · 2 lots
Own New
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$1.6K
271 sh · $5.74 avg · 2 lots
Own -1%
-
Exercise·M
Sriram Vandana KEY
Chief Financial Officer
—
777 sh · 2 lots
Own +3%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$0
4.4K sh
Own -5%
-
Grant·A
President and CEO
$0
1.9M sh · 2 lots
Own New
-
Other·F
Toloue Masoud KEY
President & CEO
$14.4K
1.8K sh · $7.95
Own -0%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$2.2K
274 sh · $7.95
Own -0%
-
Grant·A
Director
$0
23.4K sh
Own +69%
-
Grant·A
Executive Chair
$0
2.4K sh
Own +2%
-
Grant·A
Director
$0
25.3K sh · 2 lots
Own +88%
-
Grant·A
Director
$0
1.2K sh
Own +0%
-
Grant·A
Director
$0
23.4K sh
Own +50%
-
Grant·A
Director
$0
25.3K sh · 2 lots
Own +86%
-
Grant·A
Director
$0
23.4K sh
Own +50%
-
Grant·A
Director
$0
23.4K sh
Own +120%
-
Grant·A
Director
$0
23.4K sh
Own +116%
-
Grant·A
Director
$0
4.0K sh
Own +1%
-
Other·F
Toloue Masoud KEY
President & CEO
$1.6K
258 sh · $6.36
Own -0%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$1.7K
229 sh · $7.41
Own -0%
-
Other·F
Toloue Masoud KEY
President & CEO
$9.2K
1.2K sh · $7.41
Own -0%
-
Other·F
Toloue Masoud KEY
President & CEO
$1.8K
254 sh · $7.26
Own -0%
-
Grant·A
Director
—
46.7K sh
Own New
-
Grant·A
Executive Chair
$0
70.1K sh
Own New
-
Grant·A
Director
—
46.7K sh
Own New
-
Other·F
Toloue Masoud KEY
President & CEO
$7.1K
1.2K sh · $5.74
Own -0%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$1.3K
229 sh · $5.78
Own -0%
-
Other·F
Toloue Masoud KEY
President & CEO
$1.4K
254 sh · $5.34
Own -0%
-
Other·F
Toloue Masoud KEY
President & CEO
$7.2K
1.2K sh · $5.78
Own -0%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$1.3K
229 sh · $5.78
Own -0%
-
Grant·A
Director
$28.1K
5.1K sh · $5.54
Own +4%
-
Grant·A
Director
$14.4K
2.6K sh · $5.54
Own +0%
-
Grant·A
Director
$11.5K
2.1K sh · $5.54
Own +8%
-
Grant·A
Director
$11.5K
2.1K sh · $5.54
Own +7%
-
Other·F
Toloue Masoud KEY
President & CEO
$1.4K
254 sh · $5.43
Own -0%
-
Other·F
Toloue Masoud KEY
President & CEO
$6.2K
1.2K sh · $4.97
Own -0%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$1.1K
229 sh · $4.97
Own -0%
-
Buy·P
Sriram Vandana KEY
Chief Financial Officer
$19.9K
4.2K sh · $4.79
Own +5%
-
Other·F
Toloue Masoud KEY
President & CEO
$1.2K
254 sh · $4.55
Own -0%
-
Other·F
Toloue Masoud KEY
President & CEO
$5.7K
1.2K sh · $4.57
Own -0%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$1.0K
229 sh · $4.57
Own -0%
-
Other·F
Toloue Masoud KEY
President & CEO
$1.5K
254 sh · $5.94
Own -0%
-
Other·F
Toloue Masoud KEY
President & CEO
$6.8K
1.2K sh · $5.49
Own -0%
-
Other·F
Sriram Vandana KEY
Chief Financial Officer
$1.3K
229 sh · $5.49
Own -0%
-
Grant·A
Director
$0
50.8K sh
Own New
-
Grant·A
Director
$0
27.4K sh · 2 lots
Own New
-
Grant·A
Director
$0
50.8K sh
Own New
-
Grant·A
Director
$0
28.7K sh · 2 lots
Own New
-
Grant·A
Director
$14.4K
2.1K sh · $6.69
Own +0%
-
Grant·A
Director
$28.1K
4.2K sh · $6.69
Own +3%
-
Grant·A
Director
$15.0K
2.2K sh · $6.69
Own +1%
-
Grant·A
Director
$17.5K
2.6K sh · $6.69
Own +5%
-
Other·F
Toloue Masoud KEY
President & CEO
$1.7K
254 sh · $6.65
Own -0%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 15, 2026 | Miller Michael Francis | Exercise M | 1.6K5 lots | $0 |
| Jun 15, 2026 | Miller Michael Francis | Other F | 4675 lots | $1.4K |
| Jun 15, 2026 | Miller Michael Francis | Exercise M | 1.6K5 lots | — |
| May 31, 2026 | Miller Michael Francis | Exercise M | 130 | $0 |
| May 31, 2026 | Miller Michael Francis | Other F | 39 | $119 |
| May 31, 2026 | Miller Michael Francis | Exercise M | 130 | — |
| May 15, 2026 | Sriram Vandana KEY | Exercise M | 1.8K3 lots | $0 |
| May 15, 2026 | Sriram Vandana KEY | Other F | 5483 lots | $1.5K |
| May 15, 2026 | Sriram Vandana KEY | Exercise M | 1.8K3 lots | — |
| May 15, 2026 | Miller Michael Francis | Exercise M | 1.6K5 lots | $0 |
| May 15, 2026 | Miller Michael Francis | Other F | 4675 lots | $1.3K |
| May 15, 2026 | Miller Michael Francis | Exercise M | 1.6K5 lots | — |
| May 12, 2026 | Benjamin Meadows | Buy P | 3.5K | $9.7K |
| Apr 30, 2026 | Miller Michael Francis | Exercise M | 130 | $0 |
| Apr 30, 2026 | Miller Michael Francis | Other F | 39 | $122 |
| Apr 30, 2026 | Miller Michael Francis | Exercise M | 130 | — |
| Apr 15, 2026 | Sriram Vandana KEY | Exercise M | 1.8K3 lots | $0 |
| Apr 15, 2026 | Sriram Vandana KEY | Other F | 5483 lots | $2.0K |
| Apr 15, 2026 | Sriram Vandana KEY | Exercise M | 1.8K3 lots | — |
| Apr 15, 2026 | Miller Michael Francis | Exercise M | 1.6K5 lots | $0 |
| Apr 15, 2026 | Miller Michael Francis | Other F | 4675 lots | $1.7K |
| Apr 15, 2026 | Miller Michael Francis | Exercise M | 1.6K5 lots | — |
| Apr 1, 2026 | Mendel Scott | Grant A | 4.3K | $0 |
| Apr 1, 2026 | DONNELLY WILLIAM P KEY | Grant A | 6.2K | $0 |
| Mar 31, 2026 | Miller Michael Francis | Exercise M | 2292 lots | $0 |
| Mar 31, 2026 | Miller Michael Francis | Other F | 692 lots | $243 |
| Mar 31, 2026 | Miller Michael Francis | Exercise M | 2292 lots | — |
| Mar 15, 2026 | Sriram Vandana KEY | Exercise M | 1.8K3 lots | $0 |
| Mar 15, 2026 | Sriram Vandana KEY | Other F | 6453 lots | $3.0K |
| Mar 15, 2026 | Sriram Vandana KEY | Exercise M | 1.8K3 lots | — |
| Mar 15, 2026 | Miller Michael Francis | Exercise M | 1.6K5 lots | $0 |
| Mar 15, 2026 | Miller Michael Francis | Other F | 5495 lots | $2.6K |
| Mar 15, 2026 | Miller Michael Francis | Exercise M | 1.6K5 lots | — |
| Feb 15, 2026 | Sriram Vandana KEY | Exercise M | 7772 lots | $0 |
| Feb 15, 2026 | Sriram Vandana KEY | Grant A | 149.8K2 lots | $0 |
| Feb 15, 2026 | Sriram Vandana KEY | Other F | 2712 lots | $1.6K |
| Feb 15, 2026 | Sriram Vandana KEY | Exercise M | 7772 lots | — |
| Feb 4, 2026 | Sriram Vandana KEY | Other F | 4.4K | $0 |
| Jan 19, 2026 | Cunningham Everett KEY | Grant A | 1.9M2 lots | $0 |
| Jan 15, 2026 | Toloue Masoud KEY | Other F | 1.8K | $14.4K |
| Jan 15, 2026 | Sriram Vandana KEY | Other F | 274 | $2.2K |
| Jan 2, 2026 | Flynn Karen | Grant A | 23.4K | $0 |
| Jan 2, 2026 | DONNELLY WILLIAM P KEY | Grant A | 2.4K | $0 |
| Jan 2, 2026 | Mendel Scott | Grant A | 25.3K2 lots | $0 |
| Jan 2, 2026 | WALT DAVID R | Grant A | 1.2K | $0 |
| Jan 2, 2026 | Hampton Malcolm Garret | Grant A | 23.4K | $0 |
| Jan 2, 2026 | LAI GOLDMAN MYLA | Grant A | 25.3K2 lots | $0 |
| Jan 2, 2026 | Sachs Alan Bruce | Grant A | 23.4K | $0 |
| Jan 2, 2026 | Elliott Jeffrey Thomas | Grant A | 23.4K | $0 |
| Jan 2, 2026 | Magovcevic-Liebisch Ivana | Grant A | 23.4K | $0 |
| Jan 2, 2026 | MEISTER PAUL M | Grant A | 4.0K | $0 |
| Dec 31, 2025 | Toloue Masoud KEY | Other F | 258 | $1.6K |
| Dec 15, 2025 | Sriram Vandana KEY | Other F | 229 | $1.7K |
| Dec 15, 2025 | Toloue Masoud KEY | Other F | 1.2K | $9.2K |
| Nov 30, 2025 | Toloue Masoud KEY | Other F | 254 | $1.8K |
| Nov 20, 2025 | Sachs Alan Bruce | Grant A | 46.7K | — |
| Nov 20, 2025 | DONNELLY WILLIAM P KEY | Grant A | 70.1K | $0 |
| Nov 20, 2025 | Hampton Malcolm Garret | Grant A | 46.7K | — |
| Nov 15, 2025 | Toloue Masoud KEY | Other F | 1.2K | $7.1K |
| Nov 15, 2025 | Sriram Vandana KEY | Other F | 229 | $1.3K |
| Oct 31, 2025 | Toloue Masoud KEY | Other F | 254 | $1.4K |
| Oct 15, 2025 | Toloue Masoud KEY | Other F | 1.2K | $7.2K |
| Oct 15, 2025 | Sriram Vandana KEY | Other F | 229 | $1.3K |
| Oct 1, 2025 | DONNELLY WILLIAM P | Grant A | 5.1K | $28.1K |
| Oct 1, 2025 | WALT DAVID R | Grant A | 2.6K | $14.4K |
| Oct 1, 2025 | LAI GOLDMAN MYLA | Grant A | 2.1K | $11.5K |
| Oct 1, 2025 | Mendel Scott | Grant A | 2.1K | $11.5K |
| Sep 30, 2025 | Toloue Masoud KEY | Other F | 254 | $1.4K |
| Sep 15, 2025 | Toloue Masoud KEY | Other F | 1.2K | $6.2K |
| Sep 15, 2025 | Sriram Vandana KEY | Other F | 229 | $1.1K |
| Sep 12, 2025 | Sriram Vandana KEY | Buy P | 4.2K | $19.9K |
| Aug 31, 2025 | Toloue Masoud KEY | Other F | 254 | $1.2K |
| Aug 15, 2025 | Toloue Masoud KEY | Other F | 1.2K | $5.7K |
| Aug 15, 2025 | Sriram Vandana KEY | Other F | 229 | $1.0K |
| Jul 31, 2025 | Toloue Masoud KEY | Other F | 254 | $1.5K |
| Jul 15, 2025 | Toloue Masoud KEY | Other F | 1.2K | $6.8K |
| Jul 15, 2025 | Sriram Vandana KEY | Other F | 229 | $1.3K |
| Jul 8, 2025 | LAI GOLDMAN MYLA | Grant A | 50.8K | $0 |
| Jul 8, 2025 | LAI GOLDMAN MYLA | Grant A | 27.4K2 lots | $0 |
| Jul 8, 2025 | Mendel Scott | Grant A | 50.8K | $0 |
| Jul 8, 2025 | Mendel Scott | Grant A | 28.7K2 lots | $0 |
| Jul 1, 2025 | WALT DAVID R | Grant A | 2.1K | $14.4K |
| Jul 1, 2025 | DONNELLY WILLIAM P | Grant A | 4.2K | $28.1K |
| Jul 1, 2025 | MEISTER PAUL M | Grant A | 2.2K | $15.0K |
| Jul 1, 2025 | Hlavinka Sarah E. | Grant A | 2.6K | $17.5K |
| Jun 30, 2025 | Toloue Masoud KEY | Other F | 254 | $1.7K |
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.