Chief Compliance Officer

0001104659-23-117928.txt : 20231114 0001104659-23-117928.hdr.sgml : 20231114 20231114130559 ACCESSION NUMBER: 0001104659-23-117928 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20230930 FILED AS OF DATE: 20231114 DATE AS OF CHANGE: 20231114 EFFECTIVENESS DATE: 20231114 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Portolan Capital Management, LLC CENTRAL INDEX KEY: 0001350290 IRS NUMBER: 201926326 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-11602 FILM NUMBER: 231403447 BUSINESS ADDRESS: STREET 1: 2 INTERNATIONAL PLACE, 26TH FLOOR CITY: BOSTON STATE: MA ZIP: 02110 BUSINESS PHONE: 617.753.6400 MAIL ADDRESS: STREET 1: 2 INTERNATIONAL PLACE, 26TH FLOOR CITY: BOSTON STATE: MA ZIP: 02110 13F-HR 1 primary_doc.xml X0202 13F-HR LIVE false false false 0001350290 XXXXXXXX 09-30-2023 09-30-2023 false Portolan Capital Management, LLC

2 International Place, 26th Floor Boston MA 02110

13F HOLDINGS REPORT 028-11602 N Betsy Flaherty Chief Compliance Officer 617-753-6400 /s/ Betsy Flaherty Boston MA 11-14-2023 0 123 1070047809 INFORMATION TABLE 2 infotable.xml 1STDIBS COM, INC. COM 320551104 2023520 555912 SH SOLE 555912 0 0 ACACIA RESEARCH CORPORATION COM 003881307 4382927 1200802 SH SOLE 1200802 0 0 ALPHABET, INC. COM 02079K107 528455 4008 SH SOLE 4008 0 0 ALTA EQUIPMENT GROUP, INC. COM 02128L106 2285105 189478 SH SOLE 189478 0 0 AMERICAS CAR MART, INC. COM 03062T105 4946034 54358 SH SOLE 54358 0 0 AMKOR TECHNOLOGIES, INC. COM 031652100 8430568 373034 SH SOLE 373034 0 0 AMPHASTAR PHARMACEUTICALS, INC. COM 03209R103 6109772 132850 SH SOLE 132850 0 0 APPLIED DIGITAL CORPORATION COM 038169207 6391189 1024229 SH SOLE 1024229 0 0 APPLIED OPTOELECTRONICS, INC. COM 03823U102 11492161 1047599 SH SOLE 1047599 0 0 ARCTURUS THERAPEUTICS HOLDINGS, INC. COM 03969T109 7064703 276505 SH SOLE 276505 0 0 AXT, INC. COM 00246W103 1222464 509360 SH SOLE 509360 0 0 BAIDU, INC. 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