0001570598-18-000002.txt : 20180214 0001570598-18-000002.hdr.sgml : 20180214 20180214165715 ACCESSION NUMBER: 0001570598-18-000002 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20171231 FILED AS OF DATE: 20180214 DATE AS OF CHANGE: 20180214 EFFECTIVENESS DATE: 20180214 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: 18613206 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 12-31-2017 12-31-2017 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 02-14-2018 0 53 299871 INFORMATION TABLE 2 infotable.xml ALLIANCE DATA SYSTEMS CORP COM 018581108 2535 10000 SH SOLE 10000 0 0 ASSEMBLY BIOSCIENCES INC COM 045396108 5676 125443 SH SOLE 125443 0 0 DIGITAL TURBINE INC COM NEW 25400W102 306 170800 SH SOLE 170800 0 0 AIR TRANSPORT SERVICES GRP I COM 00922R105 6754 291894 SH SOLE 291894 0 0 ABRAXAS PETE CORP COM 003830106 1674 680609 SH SOLE 680609 0 0 NATUS MEDICAL INC DEL COM 639050103 13127 343645 SH SOLE 343645 0 0 BONANZA CREEK ENERGY INC COM NEW 097793400 2187 79278 SH SOLE 79278 0 0 BIOTELEMETRY INC COM 090672106 11333 379029 SH SOLE 379029 0 0 BUILDERS FIRSTSOURCE INC COM 12008R107 3406 156289 SH SOLE 156289 0 0 BOX INC CL A 10316T104 3168 150000 SH SOLE 150000 0 0 CALLIDUS SOFTWARE INC COM 13123E500 4871 170015 SH SOLE 170015 0 0 CARBONITE INC COM 141337105 7603 302896 SH SOLE 302896 0 0 CENTURY CMNTYS INC COM 156504300 4655 149670 SH SOLE 149670 0 0 CONCERT PHARMACEUTICALS INC COM 206022105 5279 204077 SH SOLE 204077 0 0 EXPRESS INC COM 30219E103 928 91445 SH SOLE 91445 0 0 DIAMONDBACK ENERGY INC COM 25278X109 3257 25800 SH SOLE 25800 0 0 FIVE9 INC COM 338307101 5710 229501 SH SOLE 229501 0 0 GREEN DOT CORP CL A 39304D102 3417 56699 SH SOLE 56699 0 0 GTT COMMUNICATIONS INC COM 362393100 15610 332486 SH SOLE 332486 0 0 HORTONWORKS INC COM 440894103 5739 285389 SH SOLE 285389 0 0 HEALTH INS INNOVATIONS INC COM CL A 42225K106 36264 1453484 SH SOLE 1453484 0 0 HERBALIFE LTD COM USD SHS G4412G101 4233 62500 SH SOLE 62500 0 0 HOMESTREET INC COM 43785V102 2281 78799 SH SOLE 78799 0 0 ICU MED INC COM 44930G107 6108 28280 SH SOLE 28280 0 0 IMMERSION CORP COM 452521107 773 109468 SH SOLE 109468 0 0 IMMUNOMEDICS INC COM 452907108 7219 446703 SH SOLE 446703 0 0 IRIDEX CORP COM 462684101 3686 483760 SH SOLE 483760 0 0 INVUITY INC COM NEW 46187J205 4511 727510 SH SOLE 727510 0 0 LIGAND PHARMACEUTICALS INC COM NEW 53220K504 5444 39756 SH SOLE 39756 0 0 GRAND CANYON ED INC COM 38526M106 6267 70000 SH SOLE 70000 0 0 MONARCH CASINO & RESORT INC COM 609027107 803 17909 SH SOLE 17909 0 0 MODEL N INC COM 607525102 10494 666277 SH SOLE 666277 0 0 MARVELL TECHNOLOGY GROUP LTD ORD G5876H105 2513 117053 SH SOLE 117053 0 0 MOLECULAR TEMPLATES INC COM 608550109 557 55626 SH SOLE 55626 0 0 NEOS THERAPEUTICS INC COM 64052L106 7993 783583 SH SOLE 783583 0 0 NOVUS THERAPEUTICS INC COM 67011N105 1376 338929 SH SOLE 338929 0 0 NEXPOINT RESIDENTIAL TR INC COM 65341D102 7226 258622 SH SOLE 258622 0 0 PDF SOLUTIONS INC COM 693282105 4010 255398 SH SOLE 255398 0 0 QUOTIENT TECHNOLOGY INC COM 749119103 3818 324918 SH SOLE 324918 0 0 RECRO PHARMA INC COM 75629F109 3362 363495 SH SOLE 363495 0 0 RSP PERMIAN INC COM 74978Q105 4422 108693 SH SOLE 108693 0 0 STRONGBRIDGE BIOPHARMA PLC SHS USD G85347105 10194 1406095 SH SOLE 1406095 0 0 SERVICESOURCE INTL INC COM 81763U100 1451 469622 SH SOLE 469622 0 0 STEMLINE THERAPEUTICS INC COM 85858C107 12934 829090 SH SOLE 829090 0 0 SUPERIOR INDS INTL INC COM 868168105 2854 192180 SH SOLE 192180 0 0 SAVARA INC COM 805111101 11569 779554 SH SOLE 779554 0 0 TELENAV INC COM 879455103 502 91274 SH SOLE 91274 0 0 TOWER SEMICONDUCTOR LTD SHS NEW M87915274 4590 134682 SH SOLE 134682 0 0 TYLER TECHNOLOGIES INC COM 902252105 6141 34687 SH SOLE 34687 0 0 NET 1 UEPS TECHNOLOGIES INC COM NEW 64107N206 2044 171868 SH SOLE 171868 0 0 UPLAND SOFTWARE INC COM 91544A109 9474 437377 SH SOLE 437377 0 0 UROGEN PHARMA LTD COM M96088105 2107 56617 SH SOLE 56617 0 0 ENCORE WIRE CORP COM 292562105 5416 111327 SH SOLE 111327 0 0