Portolan Capital Management, LLC - Significant Ownership

Signature - Title
George McCabe - George McCabe/Manager
Location
Boston, MA
Summary
This page shows a list of all the recent SCHEDULE 13D/G filings made by Portolan Capital Management, LLC.

Significant Ownership of Portolan Capital Management, LLC

Sym Company Class Ownership Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
QTRX Quanterix Corp Common Stock, $0.001 par value per share 9.36% $16.5M $3.04M 3.63M +22.6% Portolan Capital Management, LLC Jun 30, 2025
DOMO DOMO, INC. Class B Common Stock, par value $0.001 per share 7.07% $42.5M $6.17M 2.68M +17% Portolan Capital Management, LLC Sep 30, 2025
VPG Vishay Precision Group, Inc. Common Stock, $0.10 par value 6.72% $26.4M -$5.36M 823K -16.9% Portolan Capital Management, LLC Sep 30, 2025
CSTL Castle Biosciences, Inc. Common Stock, $0.001 par value per share 5.65% $32.4M 1.61M Portolan Capital Management, LLC Apr 7, 2025
PBPB Potbelly Corp Common Stock, $0.01 par value 5.53% $14.5M 1.67M Portolan Capital Management, LLC Jun 20, 2025
HNST Honest Company, Inc. Common Stock, $0.0001 par value per share 5.31% $23.6M 5.36M Portolan Capital Management, LLC Dec 31, 2024
MAMA Mama's Creations, Inc. Common Stock, par value $0.00001 5.24% $13.6M 1.97M Portolan Capital Management, LLC Apr 4, 2025
ORN Orion Group Holdings, Inc. Common Stock, $0.01 par value per share 1.15% $2.48M 449K Portolan Capital Management, LLC Dec 31, 2024
SPWH Sportsman's Warehouse Holdings, Inc. Common Stock, $0.01 par value per share 0.62% $368K 237K Portolan Capital Management, LLC Mar 31, 2025
GENK GEN Restaurant Group, Inc. Class A Common Stock 0% $0 -$1.27M 0 -100% Portolan Capital Management, LLC Mar 31, 2025

Schedules 13D/G Reported by Portolan Capital Management, LLC:

Sym Target Class Ownership Change Current Shares Change Value Reporting name Form Report Period Date Filed
* An asterisk sign (*) next to the price indicates that the price is likely invalid.