DONNELLY WILLIAM P bought QTRX

August 13, 2026 · Form 4 insider transaction

DONNELLY WILLIAM P bought 72,245 shares of Quanterix Corporation at $2.93 per share, a transaction worth $211.7K. The trade was recorded as open-market purchase and disclosed on an SEC Form 4, filed 1 day after the transaction.

Direction
Acquired (buy-side)
Shares
72,245
Price
$2.93
Total value
$211.7K
RoleDirector
SecurityCommon Stock
Transaction codeP: Open-market purchase
Transaction dateAugust 13, 2026
Filing dateAugust 14, 2026
Shares owned after99,400
OwnershipIndirect
10b5-1 planNo
AmendedNo

Footnotes

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.85 to $3.13, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.; Owned jointly by trusts established by the reporting person and his spouse.

View the original Form 4 on SEC EDGAR