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QUANTERIX CORP (QTRX) Stock Ownership and Short Interest

USA - Nasdaq - NASDAQ:QTRX - US74766Q1013 - Common Stock

6.64 USD
-0.16 (-2.35%)
Last: 12/23/2025, 8:00:01 PM
6.64 USD
0 (0%)
After Hours: 12/23/2025, 8:00:01 PM
QTRX Ownership Chart.QTRX Ownership Chart: showing Insider, Institutional ownership and shares available to the public.QTRX Ownership.InsiderInstitutionalPublic



Shares Outstanding46.71M
Float41.48M
Float Short Interest Percentage7.66%
Owners (insider)1.07%
Owners (institutional)76.48%
Owners (insider) change1.38%
Owners (institutional) change2.75%
QTRX Institutional Ownership HistoryQTRX Institutional Ownership HistoryQTRX Institutional Ownership History Sep 2021 Mar 2022 Sep 2022 Mar 2023 Sep 2023 Mar 2024 Sep 2024 Mar 2025 Sep 2025 10M 20M 30M
QTRX Historical Insider Transactions ChartQTRX Historical Insider Buy and Sell Transactions ChartQTRX Historical Insider Transactions Jan 2025 Feb 2025 Mar 2025 Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 0 100K 200K 300K 400K 500K
Date Name Type Shares Price Amount
Dec 15, 2025 Toloue Masoud Option Excercise 1242 7.41 $ 9,203.22
Dec 15, 2025 Sriram Vandana Option Excercise 229 7.41 $ 1,696.89
Nov 30, 2025 Toloue Masoud Option Excercise 254 7.26 $ 1,844.04
Nov 20, 2025 Hampton Malcolm Garret Grant 46727 $ 0.00
Oct 31, 2025 Toloue Masoud Option Excercise 254 5.34 $ 1,356.36
Oct 15, 2025 Sriram Vandana Option Excercise 229 5.78 $ 1,323.62
Oct 15, 2025 Toloue Masoud Option Excercise 1242 5.78 $ 7,178.76
Oct 1, 2025 WALT DAVID R Grant 2594 5.54 $ 14,370.76
Oct 1, 2025 Mendel Scott Grant 2084 5.54 $ 11,545.36
Oct 1, 2025 LAI GOLDMAN MYLA Grant 2084 5.54 $ 11,545.36
Oct 1, 2025 DONNELLY WILLIAM P Grant 5076 5.54 $ 28,121.04
Sep 30, 2025 Toloue Masoud Option Excercise 254 5.43 $ 1,379.22
Sep 15, 2025 Sriram Vandana Option Excercise 229 4.97 $ 1,138.13
Sep 15, 2025 Toloue Masoud Option Excercise 1242 4.97 $ 6,172.74
Sep 12, 2025 Sriram Vandana Open Market Purchase 4150 4.79 $ 19,878.50
Aug 31, 2025 Toloue Masoud Option Excercise 254 4.55 $ 1,155.70
Aug 15, 2025 Sriram Vandana Option Excercise 229 4.57 $ 1,046.53
Aug 15, 2025 Toloue Masoud Option Excercise 1242 4.57 $ 5,675.94
Jul 31, 2025 Toloue Masoud Option Excercise 254 5.94 $ 1,508.76
Jul 15, 2025 Toloue Masoud Option Excercise 1242 5.49 $ 6,818.58
Jul 15, 2025 Sriram Vandana Option Excercise 229 5.49 $ 1,257.21
Jul 8, 2025 Mendel Scott Grant 28653 0.00 $ 0.00
Jul 8, 2025 LAI GOLDMAN MYLA Grant 27404 0.00 $ 0.00
Jul 1, 2025 DONNELLY WILLIAM P Grant 4204 6.69 $ 28,124.76
Jul 1, 2025 WALT DAVID R Grant 2148 6.69 $ 14,370.12
Jul 1, 2025 MEISTER PAUL M Grant 2242 6.69 $ 14,998.98
Jul 1, 2025 Hlavinka Sarah E. Grant 2615 6.69 $ 17,494.35
Jun 30, 2025 Toloue Masoud Option Excercise 254 6.65 $ 1,689.10
Jun 15, 2025 Toloue Masoud Option Excercise 1242 6.06 $ 7,526.52
Jun 15, 2025 Sriram Vandana Option Excercise 229 6.06 $ 1,387.74
Jun 12, 2025 WALT DAVID R Open Market Purchase 160000 6.16 $ 984,968.49
Jun 9, 2025 Toloue Masoud Open Market Purchase 45900 5.42 $ 248,722.92
Jun 6, 2025 DONNELLY WILLIAM P Open Market Purchase 93113 5.44 $ 506,348.49
Jun 6, 2025 WALT DAVID R Open Market Purchase 210000 5.40 $ 1,133,795.69
May 31, 2025 Toloue Masoud Option Excercise 254 5.20 $ 1,320.80
May 15, 2025 Sriram Vandana Option Excercise 229 4.50 $ 1,030.50
May 15, 2025 Toloue Masoud Option Excercise 1242 4.50 $ 5,589.00
Apr 30, 2025 Toloue Masoud Option Excercise 254 5.76 $ 1,463.04
Apr 15, 2025 Sriram Vandana Option Excercise 229 5.36 $ 1,227.44
Apr 15, 2025 Toloue Masoud Option Excercise 1242 5.16 $ 6,408.72
Apr 1, 2025 WALT DAVID R Grant 2156 6.67 $ 14,369.74
Apr 1, 2025 MEISTER PAUL M Grant 2479 6.67 $ 16,522.54
Apr 1, 2025 Hlavinka Sarah E. Grant 2625 6.67 $ 17,495.63
Apr 1, 2025 DONNELLY WILLIAM P Grant 2681 6.67 $ 17,868.87
Mar 31, 2025 Toloue Masoud Option Excercise 254 6.51 $ 1,653.54
Mar 15, 2025 Toloue Masoud Option Excercise 1242 7.06 $ 8,768.52
Mar 15, 2025 Sriram Vandana Option Excercise 229 7.06 $ 1,616.74
Feb 28, 2025 Toloue Masoud Option Excercise 247 7.59 $ 1,874.73
Feb 15, 2025 Sriram Vandana Option Excercise 92 8.05 $ 740.60
Feb 15, 2025 Toloue Masoud Option Excercise 752 8.05 $ 6,053.60
Feb 4, 2025 Sriram Vandana Grant 50712 0.00 $ 0.00
Feb 4, 2025 Toloue Masoud Grant 138790 0.00 $ 0.00
Feb 2, 2025 Sriram Vandana Option Excercise 2166 9.19 $ 19,905.54
Jan 31, 2025 Toloue Masoud Option Excercise 6375 9.19 $ 58,586.25
Jan 15, 2025 Sriram Vandana Option Excercise 93 8.62 $ 801.66
Jan 15, 2025 Toloue Masoud Option Excercise 906 8.62 $ 7,809.72
Dec 31, 2024 Toloue Masoud Option Excercise 415 10.63 $ 4,411.45