0001104659-24-061786.txt : 20240515 0001104659-24-061786.hdr.sgml : 20240515 20240515134518 ACCESSION NUMBER: 0001104659-24-061786 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20240331 FILED AS OF DATE: 20240515 DATE AS OF CHANGE: 20240515 EFFECTIVENESS DATE: 20240515 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Portolan Capital Management, LLC CENTRAL INDEX KEY: 0001350290 ORGANIZATION NAME: 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: 24949145 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 03-31-2024 03-31-2024 false Portolan Capital Management, LLC

2 International Place, 26th Floor Boston MA 02110

13F HOLDINGS REPORT 028-11602 N Betsy Flaherty 617-753-6400 /s/Betsy Flaherty Boston MA 05-15-2024 0 116 1312928631 INFORMATION TABLE 2 infotable.xml 1STDIBS COM INC COM 320551104 3901875 654677 SH SOLE 654677 0 0 ACM RESH INC COM CL A 00108J109 15689938 538433 SH SOLE 538433 0 0 AEROVIRONMENT INC COM 008073108 7090426 46258 SH SOLE 46258 0 0 AGNICO EAGLE MINES LTD COM 008474108 18591414 311675 SH SOLE 311675 0 0 ALARM COM HLDGS INC COM 011642105 3638066 50201 SH SOLE 50201 0 0 ALPHABET INC CAP STK CL C 02079K107 939749 6172 SH SOLE 6172 0 0 ALTIMMUNE INC COM NEW 02155H200 9032256 887255 SH SOLE 887255 0 0 AMERICAN INTL GROUP INC COM NEW 026874784 9941426 127177 SH SOLE 127177 0 0 AMPHASTAR PHARMACEUTICALS IN COM 03209R103 3996030 91005 SH SOLE 91005 0 0 ANGLOGOLD ASHANTI PLC COM SHS G0378L100 11958185 538657 SH SOLE 538657 0 0 APPLIED DIGITAL CORP COM NEW 038169207 5163050 1206320 SH SOLE 1206320 0 0 APPLIED OPTOELECTRONICS INC COM 03823U102 19887714 1434900 SH SOLE 1434900 0 0 ARCTURUS THERAPEUTICS HLDGS COM 03969T109 8262134 244659 SH SOLE 244659 0 0 AVID BIOSERVICES INC COM 05368M106 5808130 866885 SH SOLE 866885 0 0 AXT INC COM 00246W103 7326705 1596232 SH SOLE 1596232 0 0 AZZ INC COM 002474104 3967781 51323 SH SOLE 51323 0 0 BAIDU INC SPON ADR REP A 056752108 20258188 192422 SH SOLE 192422 0 0 BEL FUSE INC CL B 077347300 6495206 107697 SH SOLE 107697 0 0 BIO RAD LABS INC CL A 090572207 31471403 90992 SH SOLE 90992 0 0 BIOLIFE SOLUTIONS INC COM NEW 09062W204 16167011 871537 SH SOLE 871537 0 0 BLUELINX HLDGS INC COM NEW 09624H208 550785 4229 SH SOLE 4229 0 0 BRIGHTVIEW HLDGS INC COM 10948C107 8572522 720380 SH SOLE 720380 0 0 CASELLA WASTE SYS INC CL A 147448104 1551369 15691 SH SOLE 15691 0 0 CASTLE BIOSCIENCES INC COM 14843C105 23111532 1043410 SH SOLE 1043410 0 0 CELESTICA INC SUB VTG SHS 15101Q108 44961976 1000489 SH SOLE 1000489 0 0 CELLEBRITE DI LTD ORDINARY SHARES M2197Q107 12671886 1143672 SH SOLE 1143672 0 0 CELSIUS HLDGS INC COM NEW 15118V207 8230805 99262 SH SOLE 99262 0 0 COUCHBASE INC COM 22207T101 15534845 590454 SH SOLE 590454 0 0 CRESCENT PT ENERGY CORP COM 22576C101 6362483 776860 SH SOLE 776860 0 0 CROCS INC COM 227046109 19153585 133196 SH SOLE 133196 0 0 CRYOPORT INC COM PAR $0.001 229050307 5233040 295652 SH SOLE 295652 0 0 CUSTOM TRUCK ONE SOURCE INC COM CL A 23204X103 7241721 1244282 SH SOLE 1244282 0 0 DELL TECHNOLOGIES INC CL C 24703L202 6797419 59569 SH SOLE 59569 0 0 DIGITALOCEAN HLDGS INC COM 25402D102 5044991 132137 SH SOLE 132137 0 0 DOUGLAS ELLIMAN INC COM 25961D105 3500441 2215469 SH SOLE 2215469 0 0 E L F BEAUTY INC COM 26856L103 32678985 166704 SH SOLE 166704 0 0 ELDORADO GOLD CORP NEW COM 284902509 8096680 575457 SH SOLE 575457 0 0 ENOVA INTL INC COM 29357K103 7760322 123513 SH SOLE 123513 0 0 EVERQUOTE INC COM CL A 30041R108 6815993 367241 SH SOLE 367241 0 0 FLEX LTD ORD Y2573F102 12308165 430205 SH SOLE 430205 0 0 FORRESTER RESH INC COM 346563109 8529955 395638 SH SOLE 395638 0 0 GATES INDL CORP PLC ORD SHS G39108108 3843637 217032 SH SOLE 217032 0 0 GDS HLDGS LTD SPONSORED ADS 36165L108 11063352 1663662 SH SOLE 1663662 0 0 GEN RESTAURENT GROUP CL A COM 36870C104 4270932 365662 SH SOLE 365662 0 0 GENIUS SPORTS LIMITED SHARES CL A G3934V109 12585120 2204049 SH SOLE 2204049 0 0 GFL ENVIRONMENTAL INC SUB VTG SHS 36168Q104 6533817 189386 SH SOLE 189386 0 0 HARVARD BIOSCIENCE INC COM 416906105 2958842 697840 SH SOLE 697840 0 0 HONEST CO INC COM 438333106 30329247 7488703 SH SOLE 7488703 0 0 HUDSON TECHNOLOGIES INC COM 444144109 7547894 685549 SH SOLE 685549 0 0 I3 VERTICALS INC COM CL A 46571Y107 21177416 925182 SH SOLE 925182 0 0 ICAD INC COM NEW 44934S206 1945308 1208266 SH SOLE 1208266 0 0 IDENTIV INC COM NEW 45170X205 11425891 1442663 SH SOLE 1442663 0 0 INDIE SEMICONDUCTOR INC CLASS A COM 45569U101 13055421 1843986 SH SOLE 1843986 0 0 INTERNATIONAL SEAWAYS INC COM Y41053102 5469120 102803 SH SOLE 102803 0 0 KEMPER CORP COM 488401100 9050908 146171 SH SOLE 146171 0 0 KRATOS DEFENSE &SEC SOLUTIO COM NEW 50077B207 29126621 1584691 SH SOLE 1584691 0 0 KURA SUSHI USA INC CL A COM 501270102 17134311 148787 SH SOLE 148787 0 0 LANTHEUS HLDGS INC COM 516544103 32722182 525742 SH SOLE 525742 0 0 LANTRONIX INC COM NEW 516548203 2058321 578180 SH SOLE 578180 0 0 MARAVAI LIFESCIENCES HLDGS I COM CL A 56600D107 5899554 680456 SH SOLE 680456 0 0 MATRIX SVC CO COM 576853105 9424834 723318 SH SOLE 723318 0 0 MAXCYTE INC COM 57777K106 7214246 1721777 SH SOLE 1721777 0 0 META PLATFORMS INC CL A 30303M102 12345872 25425 SH SOLE 25425 0 0 MICRON TECHNOLOGY INC COM 595112103 18832220 159744 SH SOLE 159744 0 0 MICROSOFT CORP COM 594918104 2230657 5302 SH SOLE 5302 0 0 MODINE MFG CO COM 607828100 25596591 268900 SH SOLE 268900 0 0 MYT NETHERLANDS PARENT B V ADS 55406W103 2264144 711995 SH SOLE 711995 0 0 NATERA INC COM 632307104 18403398 201218 SH SOLE 201218 0 0 NAVIGATOR HLDGS LTD SHS Y62132108 4743227 309005 SH SOLE 309005 0 0 NAVIOS MARITIME PARTNERS L P COM UNIT LPI Y62267409 4215203 98902 SH SOLE 98902 0 0 NERDY INC CL A COM 64081V109 8503486 2922160 SH SOLE 2922160 0 0 NORTHERN OIL & GAS INC COM 665531307 11773889 296721 SH SOLE 296721 0 0 NUVEI CORPORATION SUB VTG SHS 67079A102 4900752 154989 SH SOLE 154989 0 0 NVENT ELECTRIC PLC SHS G6700G107 21503778 285196 SH SOLE 285196 0 0 OPKO HEALTH INC COM 68375N103 3889702 3241418 SH SOLE 3241418 0 0 ORACLE CORP COM 68389X105 6571036 52313 SH SOLE 52313 0 0 OVERSEAS SHIPHOLDING GROUP I CL A NEW 69036R863 4935853 771227 SH SOLE 771227 0 0 PAGAYA TECHNOLOGIES LTD CL A NEW M7S64L123 1510798 149584 SH SOLE 149584 0 0 PAYONEER GLOBAL INC COM 70451X104 5891861 1212317 SH SOLE 1212317 0 0 PLBY GROUP INC COM 72814P109 303822 289354 SH SOLE 289354 0 0 PORCH GROUP INC COM 733245104 2721588 631459 SH SOLE 631459 0 0 POTBELLY CORP COM 73754Y100 13877479 1145952 SH SOLE 1145952 0 0 QUANTERIX CORP COM 74766Q101 27396251 1162829 SH SOLE 1162829 0 0 QUINSTREET INC COM 74874Q100 6368284 360605 SH SOLE 360605 0 0 R1 RCM INC COM 77634L105 14137243 1097612 SH SOLE 1097612 0 0 RADNET INC COM 750491102 4573115 93981 SH SOLE 93981 0 0 REMITLY GLOBAL INC COM 75960P104 3646652 175827 SH SOLE 175827 0 0 REPAY HLDGS CORP COM CL A 76029L100 8970577 815507 SH SOLE 815507 0 0 RICHARDSON ELECTRS LTD COM 763165107 110060 11950 SH SOLE 11950 0 0 ROYALTY PHARMA PLC SHS CLASS A G7709Q104 8758040 288378 SH SOLE 288378 0 0 SCORPIO TANKERS INC SHS Y7542C130 8516811 119033 SH SOLE 119033 0 0 SEMTECH CORP COM 816850101 4561058 165917 SH SOLE 165917 0 0 SHIFT4 PMTS INC CL A 82452J109 15811146 239309 SH SOLE 239309 0 0 SILICON MOTION TECHNOLOGY CO SPONSORED ADR 82706C108 12307553 159963 SH SOLE 159963 0 0 SIMILARWEB LTD SHS M84137104 18365418 2040602 SH SOLE 2040602 0 0 SKECHERS U S A INC CL A 830566105 13114235 214075 SH SOLE 214075 0 0 SKYLINE CHAMPION CORPORATION COM 830830105 6855801 80647 SH SOLE 80647 0 0 SLM CORP COM 78442P106 880730 40419 SH SOLE 40419 0 0 SMART GLOBAL HLDGS INC SHS G8232Y101 18241234 693056 SH SOLE 693056 0 0 SUNOPTA INC COM 8676EP108 15575479 2267173 SH SOLE 2267173 0 0 SUPER MICRO COMPUTER INC COM 86800U104 45532152 45080 SH SOLE 45080 0 0 SWEETGREEN INC COM CL A 87043Q108 25197482 997525 SH SOLE 997525 0 0 TAKE-TWO INTERACTIVE SOFTWAR COM 874054109 10263183 69117 SH SOLE 69117 0 0 TECHTARGET INC COM 87874R100 5388170 162883 SH SOLE 162883 0 0 TECNOGLASS INC ORD SHS G87264100 19054843 366228 SH SOLE 366228 0 0 TELOS CORP MD COM 87969B101 3068495 737619 SH SOLE 737619 0 0 TH INTERNATIONAL LIMITED ORDINARY SHARES G8656L106 892677 776241 SH SOLE 776241 0 0 TTM TECHNOLOGIES INC COM 87305R109 8105808 517943 SH SOLE 517943 0 0 ULTRA CLEAN HLDGS INC COM 90385V107 4593632 99992 SH SOLE 99992 0 0 UNITED THERAPEUTICS CORP DEL COM 91307C102 25481002 110922 SH SOLE 110922 0 0 VERTIV HOLDINGS CO COM CL A 92537N108 10610811 129923 SH SOLE 129923 0 0 VIKING THERAPEUTICS INC COM 92686J106 8001806 97583 SH SOLE 97583 0 0 WALKME LTD ORD SHS M97628107 19539991 2272092 SH SOLE 2272092 0 0 WARBY PARKER INC CL A COM 93403J106 13581201 997884 SH SOLE 997884 0 0 WESTERN DIGITAL CORP. COM 958102105 25599554 375140 SH SOLE 375140 0 0 ZETA GLOBAL HOLDINGS CORP CL A 98956A105 25679620 2349462 SH SOLE 2349462 0 0