Quanterix Corporation
US ˙ NasdaqGM ˙ US74766Q1013

SecurityQTRX / Quanterix Corporation
InsiderDavid R Walt
This page shows the track record and history of WALT DAVID R insider trades in Quanterix Corporation. The SEC defines Insiders as officers, directors, or significant investors (greater than 10% ownership) in a company. It is illegal for insiders to make trades in their companies based on material, non-public information ("MNPI"). This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4.
Insider Purchases - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made by David R Walt in QTRX / Quanterix Corporation. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Max		 Price at
Max		 Max
Profit ($)		 Max Return (%)
2025-06-13 123,990 6.1360 123,990 6.1360 760,803 20 6.9800 104,648 13.75
2025-06-12 36,010 6.2251 36,010 6.2251 224,166
2025-06-09 78,131 5.3400 78,131 5.3400 417,220
2025-06-06 131,869 5.4340 131,869 5.4340 716,576
2024-08-20 47,000 13.2900 47,000 13.2900 624,630
2022-08-10 150,000 8.6233 150,000 8.6233 1,293,495
2020-03-13 54,064 16.6638 54,064 16.6638 900,912
2017-12-11 200,000 15.0000 200,000 15.0000 3,000,000

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

QTRX / Quanterix Corporation Insider Trades
Insider Sales - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made by David R Walt in QTRX / Quanterix Corporation. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Min		 Price at
Min		 Max Loss
Avoided ($)		 Max Loss
Avoided (%)
There are no known unplanned open-market trades for this insider

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

QTRX / Quanterix Corporation Insider Trades
Insider Transaction History
File
Date		 Trade
Date		 Form Insider Ticker Security Title Code 10b5-1 Direct Exercise
Price		 Unit
Price		 Units
Changed		 Value
Changed (1K)		 Remaining
Options		 Remaining
Shares
2025-07-02 2025-07-01 4 WALT DAVID R QTRX Common Stock A - Award D 6.6900 2,148 14 1,869,081
2025-06-13 2025-06-13 4 WALT DAVID R QTRX Common Stock P - Purchase D 6.1360 123,990 761 1,866,933
2025-06-13 2025-06-12 4 WALT DAVID R QTRX Common Stock P - Purchase D 6.2251 36,010 224 1,742,943
2025-06-09 2025-06-09 4 WALT DAVID R QTRX Common Stock P - Purchase D 5.3400 78,131 417 1,706,933
2025-06-09 2025-06-06 4 WALT DAVID R QTRX Common Stock P - Purchase D 5.4340 131,869 717 1,628,802
2025-04-03 2025-04-01 4 WALT DAVID R QTRX Common Stock A - Award D 6.6650 2,156 14 1,496,933
2025-01-06 2025-01-02 4 WALT DAVID R QTRX Common Stock A - Award D 7,435 1,494,777
2024-09-17 2024-08-20 4 WALT DAVID R QTRX Common Stock P - Purchase D 13.2900 47,000 625 1,487,342
2024-09-17 2023-03-09 4 WALT DAVID R QTRX Common Stock G - Gift D -1,000 1,440,342
2024-09-17 2022-10-12 4 WALT DAVID R QTRX Common Stock G - Gift D -1,000 1,441,342
2024-01-04 2024-01-02 4 WALT DAVID R QTRX Common Stock A - Award D 2,947 1,442,342
2023-01-04 2023-01-03 4 WALT DAVID R QTRX Common Stock A - Award D 8,083 1,439,395
2022-08-10 2022-08-10 4 WALT DAVID R QTRX Common Stock P - Purchase D 8.6233 150,000 1,293 1,431,312
2022-01-05 2022-01-03 4 WALT DAVID R QTRX Stock Option (Right to Buy) A - Award D 42.41 4,002 4,002
2022-01-05 2022-01-03 4 WALT DAVID R QTRX Common Stock A - Award D 2,668 1,281,312
2021-01-05 2021-01-04 4 WALT DAVID R QTRX Stock Option (Right to Buy) A - Award D 44.10 7,900 7,900
2021-01-05 2021-01-04 4 WALT DAVID R QTRX Common Stock A - Award D 2,270 1,278,644
2020-03-17 2020-03-13 4 WALT DAVID R QTRX Common Stock P - Purchase D 16.6638 54,064 901 1,276,374
2020-01-06 2020-01-02 4 WALT DAVID R QTRX Stock Option (Right to Buy) A - Award D 23.12 7,900 7,900
2020-01-06 2020-01-02 4 WALT DAVID R QTRX Common Stock A - Award D 2,270 1,222,310
2019-01-04 2019-01-02 4 WALT DAVID R QTRX Stock Option (Right to Buy) A - Award D 18.24 7,900 7,900
2019-01-04 2019-01-02 4 WALT DAVID R QTRX Common Stock A - Award D 2,270 1,220,040
2018-08-09 2018-08-07 4 WALT DAVID R QTRX Stock Option (Right to Buy) A - Award D 14.80 7,900 7,900
2018-08-09 2018-08-07 4 WALT DAVID R QTRX Common Stock A - Award D 2,270 1,217,770
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Series D Preferred Stock C - Conversion D -435,967 0
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Series C Preferred Stock C - Conversion D -92,215 0
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Series B Preferred Stock C - Conversion D -1,076,642 0
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Series A-2 Preferred Stock C - Conversion D -278,068 0
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Series A-1 Preferred Stock C - Conversion D -105,931 0
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Common Stock P - Purchase D 15.0000 200,000 3,000 1,215,500
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Common Stock C - Conversion D 135,647 1,015,500
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Common Stock C - Conversion D 28,691 879,853
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Common Stock C - Conversion D 334,985 851,162
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Common Stock C - Conversion D 86,517 516,177
2017-12-13 2017-12-11 4 WALT DAVID R QTRX Common Stock C - Conversion D 32,959 429,660
2017-12-13 2017-11-29 4 WALT DAVID R QTRX Series C Preferred Stock X - Other D 707 92,215
2017-12-13 2017-11-29 4 WALT DAVID R QTRX Warrant to Purchase Series C Preferred Stock (right to buy) X - Other D 3.33 -707 0
2017-12-13 2017-11-29 4 WALT DAVID R QTRX Series C Preferred Stock X - Other D 3,060 91,508
2017-12-13 2017-11-29 4 WALT DAVID R QTRX Warrant to Purchase Series C Preferred Stock (right to buy) X - Other D 3.33 -3,060 707
2017-12-13 2017-11-29 4 WALT DAVID R QTRX Series C Preferred Stock X - Other D 4,327 88,448
2017-12-13 2017-11-29 4 WALT DAVID R QTRX Warrant to Purchase Series C Preferred Stock (right to buy) X - Other D 3.33 -4,327 3,767
2017-12-06 3 WALT DAVID R QTRX Common Stock D 793,402
2017-12-06 3 WALT DAVID R QTRX Common Stock D 793,402
P
Köp på öppna marknaden eller privat köp av icke-derivatsäkerhet
S
Köp på öppna marknaden eller privat försäljning av icke-derivatsäkerhet
A
Bevilja, tilldelning eller annat förvärv av värdepapper från företaget (såsom en option)
C
Omvandling av derivat
D
Försäljning eller överföring av värdepapper tillbaka til företaget
F
Betalning av lösenpris eller skatteskuld med del av värdepapper som erhållits från bolaget
G
Överlåtelse av värdepapper från eller till insidern
K
Aktieswappar och liknande säkringsaffärer
M
Utövande eller omvandling av derivatsäkerhet som erhållits från företaget (som en option)
V
En transaktion friviligt rapporterad på schema 4
J
Andra (med en fotnot som beskriver transaktionen)