13D·WATCH Activist + Insider Intelligence Live feed Blog About Pricing
ISSUER PROFILE · CIK 0001503274 · CUSIP 74766Q101

Quanterix CorpQTRX

1 13D/G filings 1 distinct filers 2 insider transactions (365d)

Post-Filing Returns · across 1 activist filings on this issuer

Median 30d
0.0%
avg 0.0%
Median 60d
0.0%
avg 0.0%
Median 90d
0.0%
avg 0.0%
Median 180d
0.0%
avg 0.0%

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Cross-Reference Snapshot

Activist filings
1
1 SCHEDULE
Distinct filers
1
single filer
Insiders (365d)
2
0 buys · 0 sales
Latest short DTC
8.41
as of 2026-10-15

13D/G Filings Timeline · 1 total

FiledFormFilerStakeSharesIntent
2025-03-03 SCHEDULE Kent Lake PR LLC 6.90% 2,645,086 view →

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-08-17 DONNELLY WILLIAM P director Option exercise 2,802 — —
2026-08-17 DONNELLY WILLIAM P director Option exercise 2,802 — —

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-10-15 4,678,542 8.41 -7.3%
2026-09-30 5,046,958 7.43 +1.4%
2026-09-15 4,976,711 4.23 +3.3%
2026-08-31 4,817,511 8.34 +1.8%
2026-08-14 4,734,398 4.31 +5.1%
2026-07-31 4,504,825 9.07 +3.9%
2026-07-15 4,337,091 9.24 +0.2%
2026-06-30 4,327,379 2.60 -3.4%
2026-06-15 4,478,023 4.97 -11.5%
2026-05-29 5,057,385 4.03 -1.8%
2026-05-15 5,148,797 2.96 +12.0%
2026-04-30 4,598,830 4.49 +6.8%

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