Significant Ownership of Portolan Capital Management, LLC

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.

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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 9.4% $21,402,034 +$3,947,625 3,633,622 +23% Portolan Capital Management, LLC 30 Jun 2025
VPG Vishay Precision Group, Inc. Common Stock, $0.10 par value 6.7% $26,386,701 -$5,356,869 823,298 -17% Portolan Capital Management, LLC 30 Sep 2025
GOOS Canada Goose Holdings Inc. Subordinate Voting Shares 6.3% $37,624,542 2,905,370 Portolan Capital Management, LLC 09 Jan 2026
FORR Forrester Research, Inc. Common Stock, $0.01 Par Value 6.1% $9,211,023 1,163,008 Portolan Capital Management, LLC 11 Feb 2026
LPRO Open Lending Corp Common stock, par value $0.01 per share 5.9% $15,205,450 7,007,120 Portolan Capital Management, LLC 19 Feb 2026
CSTL Castle Biosciences, Inc. Common Stock, $0.001 par value per share 5.6% $32,399,201 1,611,099 Portolan Capital Management, LLC 07 Apr 2025
DOMO DOMO, INC. Class B Common Stock, par value $0.001 per share 5.6% $17,593,976 -$4,286,761 2,158,770 -20% Portolan Capital Management, LLC 31 Dec 2025
PBPB Potbelly Corp Common Stock, $0.01 par value 5.5% $14,542,361 1,667,702 Portolan Capital Management, LLC 20 Jun 2025
REAX Real Brokerage Inc Common Shares, no par value 5.4% $41,254,551 11,296,427 Portolan Capital Management, LLC 31 Dec 2025
HNST The Honest Company, Inc. Common Stock, $0.0001 par value per share 4.3% $12,250,725 -$1,414,727 4,804,206 -10% Portolan Capital Management, LLC 31 Dec 2025
MAMA Mama's Creations, Inc. Common Stock, par value $0.00001 3.1% $17,453,196 -$10,161,033 1,245,767 -37% Portolan Capital Management, LLC 31 Dec 2025
ORN Orion Group Holdings, Inc. Common Stock, $0.01 par value per share 1.2% $2,790,858 448,691 Portolan Capital Management, LLC 31 Dec 2024
SPWH Sportsman's Warehouse Holdings, Inc. Common Stock, $0.01 par value per share 0.62% $393,974 237,334 Portolan Capital Management, LLC 31 Mar 2025
GENK GEN Restaurant Group, Inc. Class A Common Stock 0% $0 -$1,271,308 0 -100% Portolan Capital Management, LLC 31 Mar 2025

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

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