InsiderClue
← All stocks

Quanterix Corp

QTRX Net buying
CIK 0001503274 #4122 in the set updated 17 Sep 2026
Bought (12 mo)
$296.05K
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$0.00
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$0.00
0 of 0 sales
Net
+$296.05K
+$296.05K against sales at will

By person

16 insiders · 3 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
DONNELLY WILLIAM P
Director
$286.35K (2)
—
+$286.35K
261,801
0.5536%
$767.08K
+750.5%
Meadows Benjamin
Chief Commercial Officer
$9.70K (1)
—
+$9.70K
3,500
0.0074%
$10.26K
—
WALT DAVID R
Director
—
—
—
1,872,890
3.96%
$5.49M
+25.9%
Toloue Masoud
President & CEO
—
—
—
507,310
1.07%
$1.49M
+44.0%
MEISTER PAUL M
Director
—
—
—
313,253
0.6624%
$917.83K
+6.4%
Hampton Malcolm Garret
Director
—
—
—
70,099
0.1482%
$205.39K
—
Sachs Alan Bruce
Director
—
—
—
70,099
0.1482%
$205.39K
—
Hlavinka Sarah E.
Director
—
—
—
60,070
0.1270%
$176.01K
+34.1%
Flynn Karen
Director
—
—
—
57,212
0.1210%
$167.63K
+116.7%
Magovcevic-Liebisch Ivana
Director
—
—
—
43,607
0.0922%
$127.77K
—
Miller Michael Francis
Chief Technology Officer
—
—
—
38,452
0.0813%
$112.66K
+27.1%
Madaus Martin D
Director
—
—
—
36,908
0.0780%
$108.14K
+25.2%
Sriram Vandana
Chief Financial Officer
—
—
—
31,283
0.0661%
$91.66K
—
Mendel Scott
Director
—
—
—
24,056
0.0509%
$70.48K
—
Elliott Jeffrey Thomas
Director
—
—
—
15,345
0.0324%
$44.96K
—
LAI GOLDMAN MYLA
Director
—
—
—
15,041
0.0318%
$44.07K
—

Individual transactions

3
Insider
Date
Role
Action
Shares
Price
Amount
DONNELLY WILLIAM P
13 Aug 2026
Director
Buy indirect
72,245
$2.93
$211.68K
DONNELLY WILLIAM P
12 Aug 2026
Director
Buy indirect
27,155
$2.75
$74.68K
Meadows Benjamin
12 May 2026
Chief Commercial Officer
Buy
3,500
$2.77
$9.70K
Show all 3 transactions →

What was left out

Form 4 filings counted 63
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 0
Transactions with no price 0
Shares from compensation/vesting 360,695
History held since 11 Dec 2017