0001570598-19-000001.txt : 20190214 0001570598-19-000001.hdr.sgml : 20190214 20190214161718 ACCESSION NUMBER: 0001570598-19-000001 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20181231 FILED AS OF DATE: 20190214 DATE AS OF CHANGE: 20190214 EFFECTIVENESS DATE: 20190214 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Lyon Street Capital, LLC CENTRAL INDEX KEY: 0001570598 IRS NUMBER: 263871024 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-15438 FILM NUMBER: 19606566 BUSINESS ADDRESS: STREET 1: 275 SACRAMENTO STREET, 8TH FLOOR CITY: SAN FRANCISCO STATE: CA ZIP: 94111 BUSINESS PHONE: 415-418-2211 MAIL ADDRESS: STREET 1: 275 SACRAMENTO STREET, 8TH FLOOR CITY: SAN FRANCISCO STATE: CA ZIP: 94111 13F-HR 1 primary_doc.xml 13F-HR LIVE false false false 0001570598 XXXXXXXX 12-31-2018 12-31-2018 false Lyon Street Capital, LLC

275 Sacramento Street, 8th Floor San Francisco CA 94111

13F HOLDINGS REPORT 028-15438 N Aileen Henry 415-418-2202 /s/ Aileen Henry San Francisco CA 02-14-2019 0 46 99458 INFORMATION TABLE 2 infotable.xml 8X8 INC NEW COM 282914100 2205 122202 SH SOLE 122202 0 0 ALPHABET INC CAP STK CL A 02079K305 1045 1000 SH SOLE 1000 0 0 AMAZON COM INC COM 023135106 1502 1000 SH SOLE 1000 0 0 ATTUNITY LTD SHS NEW M15332121 810 41159 SH SOLE 41159 0 0 BANDWIDTH INC COM CL A 05988J103 2237 54891 SH SOLE 54891 0 0 BIOTELEMETRY INC COM 090672106 1838 30769 SH SOLE 30769 0 0 BLUCORA INC COM 095229100 1969 73900 SH SOLE 73900 0 0 BOOT BARN HLDGS INC COM 099406100 1134 66597 SH SOLE 66597 0 0 CALIX INC COM 13100M509 3561 365272 SH SOLE 365272 0 0 CLEARWATER PAPER CORP COM 18538R103 637 26140 SH SOLE 26140 0 0 CLOUDERA INC COM 18914U100 1383 125000 SH SOLE 125000 0 0 DMC GLOBAL INC COM 23291C103 5460 155481 SH SOLE 155481 0 0 DROPBOX INC CL A 26210C104 1165 57000 SH SOLE 57000 0 0 EHEALTH INC COM 28238P109 1404 36541 SH SOLE 36541 0 0 ELDORADO RESORTS INC COM 28470R102 994 27461 SH SOLE 27461 0 0 EXPRESS INC COM 30219E103 1450 283739 SH SOLE 283739 0 0 FACEBOOK INC CL A 30303M102 1311 10000 SH SOLE 10000 0 0 FIVE9 INC COM 338307101 2058 47078 SH SOLE 47078 0 0 GRAND CANYON ED INC COM 38526M106 2305 23980 SH SOLE 23980 0 0 GREEN DOT CORP CL A 39304D102 2646 33272 SH SOLE 33272 0 0 HANGER INC COM NEW 41043F208 570 30093 SH SOLE 30093 0 0 HARMONIC INC COM 413160102 563 119198 SH SOLE 119198 0 0 HOUGHTON MIFFLIN HARCOURT CO COM 44157R109 932 105179 SH SOLE 105179 0 0 ICU MED INC COM 44930G107 2550 11105 SH SOLE 11105 0 0 LENDINGTREE INC NEW COM 52603B107 3300 15031 SH SOLE 15031 0 0 LIGAND PHARMACEUTICALS INC COM NEW 53220K504 1237 9113 SH SOLE 9113 0 0 LITTELFUSE INC COM 537008104 1372 8000 SH SOLE 8000 0 0 LOGMEIN INC COM 54142L109 1454 17822 SH SOLE 17822 0 0 MASTERCRAFT BOAT HLDGS INC COM 57637H103 1666 89078 SH SOLE 89078 0 0 MICROSOFT CORP COM 594918104 1016 10000 SH SOLE 10000 0 0 MITEK SYS INC COM NEW 606710200 1575 145667 SH SOLE 145667 0 0 MODEL N INC COM 607525102 2620 198044 SH SOLE 198044 0 0 NEXPOINT RESIDENTIAL TR INC COM 65341D102 1201 34275 SH SOLE 34275 0 0 PALO ALTO NETWORKS INC COM 697435105 2072 11000 SH SOLE 11000 0 0 QUANTENNA COMMUNICATIONS INC COM 74766D100 7871 548484 SH SOLE 548484 0 0 QUINSTREET INC COM 74874Q100 1769 108992 SH SOLE 108992 0 0 RINGCENTRAL INC CL A 76680R206 1237 15000 SH SOLE 15000 0 0 STAMPS COM INC COM NEW 852857200 1012 6500 SH SOLE 6500 0 0 STEMLINE THERAPEUTICS INC COM 85858C107 7248 762941 SH SOLE 762941 0 0 TEMPUR SEALY INTL INC COM 88023U101 3743 90418 SH SOLE 90418 0 0 TILLYS INC CL A 886885102 2481 228438 SH SOLE 228438 0 0 TUCOWS INC COM NEW 898697206 3003 50000 SH SOLE 50000 0 0 TYLER TECHNOLOGIES INC COM 902252105 1790 9634 SH SOLE 9634 0 0 ULTRA CLEAN HLDGS INC COM 90385V107 2480 292808 SH SOLE 292808 0 0 UPLAND SOFTWARE INC COM 91544A109 5830 214487 SH SOLE 214487 0 0 WINNEBAGO INDS INC COM 974637100 1752 72373 SH SOLE 72373 0 0