0001570598-18-000003.txt : 20180515 0001570598-18-000003.hdr.sgml : 20180515 20180515161855 ACCESSION NUMBER: 0001570598-18-000003 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20180331 FILED AS OF DATE: 20180515 DATE AS OF CHANGE: 20180515 EFFECTIVENESS DATE: 20180515 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: 18836768 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 03-31-2018 03-31-2018 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 05-15-2018 0 50 310478 INFORMATION TABLE 2 infotable.xml ABRAXAS PETE CORP COM 003830106 1452 653840 SH SOLE 653840 0 0 ACXIOM CORP COM 005125109 2038 89758 SH SOLE 89758 0 0 AIR TRANSPORT SERVICES GRP I COM 00922R105 6100 261594 SH SOLE 261594 0 0 ASSEMBLY BIOSCIENCES INC COM 045396108 6817 138725 SH SOLE 138725 0 0 BIOTELEMETRY INC COM 090672106 10590 341077 SH SOLE 341077 0 0 BONANZA CREEK ENERGY INC COM NEW 097793400 2197 79278 SH SOLE 79278 0 0 BOX INC CL A 10316T104 5910 287576 SH SOLE 287576 0 0 BUILDERS FIRSTSOURCE INC COM 12008R107 3101 156289 SH SOLE 156289 0 0 CALIX INC COM 13100M509 1028 150000 SH SOLE 150000 0 0 CARBONITE INC COM 141337105 10726 372416 SH SOLE 372416 0 0 CENTURY CMNTYS INC COM 156504300 4483 149670 SH SOLE 149670 0 0 CONCERT PHARMACEUTICALS INC COM 206022105 272 11893 SH SOLE 11893 0 0 DIAMONDBACK ENERGY INC COM 25278X109 3264 25800 SH SOLE 25800 0 0 DIGITAL TURBINE INC COM NEW 25400W102 1725 858347 SH SOLE 858347 0 0 ENCORE WIRE CORP COM 292562105 4220 74422 SH SOLE 74422 0 0 EXPRESS INC COM 30219E103 2087 291445 SH SOLE 291445 0 0 FIVE9 INC COM 338307101 3341 112151 SH SOLE 112151 0 0 FORESTAR GROUP INC COM 346232101 4625 218683 SH SOLE 218683 0 0 GRAND CANYON ED INC COM 38526M106 5082 48435 SH SOLE 48435 0 0 GREEN DOT CORP CL A 39304D102 3140 48935 SH SOLE 48935 0 0 GTT COMMUNICATIONS INC COM 362393100 6750 119045 SH SOLE 119045 0 0 HEALTH INS INNOVATIONS INC COM CL A 42225K106 37625 1301920 SH SOLE 1301920 0 0 HERBALIFE LTD COM USD SHS G4412G101 1754 18000 SH SOLE 18000 0 0 HOMESTREET INC COM 43785V102 4181 145922 SH SOLE 145922 0 0 HORTONWORKS INC COM 440894103 8850 434462 SH SOLE 434462 0 0 ICU MED INC COM 44930G107 7138 28280 SH SOLE 28280 0 0 IMMUNOMEDICS INC COM 452907108 3694 252855 SH SOLE 252855 0 0 IONIS PHARMACEUTICALS INC COM 462222100 3066 69554 SH SOLE 69554 0 0 IRIDEX CORP COM 462684101 2767 483760 SH SOLE 483760 0 0 LIGAND PHARMACEUTICALS INC COM NEW 53220K504 6794 41133 SH SOLE 41133 0 0 MODEL N INC COM 607525102 12282 680452 SH SOLE 680452 0 0 MOLECULAR TEMPLATES INC COM 608550109 2475 309361 SH SOLE 309361 0 0 NATUS MEDICAL INC DEL COM 639050103 593 17636 SH SOLE 17636 0 0 NEOS THERAPEUTICS INC COM 64052L106 12082 1455614 SH SOLE 1455614 0 0 NET 1 UEPS TECHNOLOGIES INC COM NEW 64107N206 2358 249268 SH SOLE 249268 0 0 NEXPOINT RESIDENTIAL TR INC COM 65341D102 6793 273479 SH SOLE 273479 0 0 NOVUS THERAPEUTICS INC COM 67011N105 1708 338929 SH SOLE 338929 0 0 PDF SOLUTIONS INC COM 693282105 2978 255398 SH SOLE 255398 0 0 QUANTENNA COMMUNICATIONS INC COM 74766D100 4308 314440 SH SOLE 314440 0 0 RECRO PHARMA INC COM 75629F109 11310 1027271 SH SOLE 1027271 0 0 RSP PERMIAN INC COM 74978Q105 5096 108693 SH SOLE 108693 0 0 SAVARA INC COM 805111101 13266 1441984 SH SOLE 1441984 0 0 SERVICESOURCE INTL INC COM 81763U100 4261 1118397 SH SOLE 1118397 0 0 STEMLINE THERAPEUTICS INC COM 85858C107 18992 1241293 SH SOLE 1241293 0 0 STRONGBRIDGE BIOPHARMA PLC SHS USD G85347105 28162 3182149 SH SOLE 3182149 0 0 SUPERIOR INDS INTL INC COM 868168105 2396 180129 SH SOLE 180129 0 0 TWILIO INC CL A 90138F102 1164 30500 SH SOLE 30500 0 0 TYLER TECHNOLOGIES INC COM 902252105 3802 18023 SH SOLE 18023 0 0 UPLAND SOFTWARE INC COM 91544A109 10003 347430 SH SOLE 347430 0 0 UROGEN PHARMA LTD COM M96088105 1632 32841 SH SOLE 32841 0 0