Portolan Capital Management, LLC - Jun 30, 2025 SCHEDULE 13G/A Report for Quanterix Corp Common Stock, $0.001 par value per share (QTRX)

Filing Manager: Portolan Capital Management, LLC
Reporting Manager: Portolan Capital Management, LLC
Security: Quanterix Corp Common Stock, $0.001 par value per share
Symbol: QTRX
Shares outstanding: 38.8M shares
Disclosed Ownership: 3.63M shares
Ownership: 9.36%
Form type: SCHEDULE 13G/A
Date filed: 8/13/2025, 04:10 PM
Date of event: Jun 30, 2025
Previous filing: May 15, 2025
SEC: View on sec.gov

Reporting Managers (2)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Portolan Capital Management, LLC	9.36%	3.63M	3.63M	0	George McCabe	George McCabe/Manager
George McCabe	9.36%	3.63M	3.63M	0	George McCabe	George McCabe