13F-HR 1 form13fhr.txt ARDSLEY ADVISORY PARTNERS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 2007 ----------------------- Check here if Amendment [ ]; Amendment Number: ----- This Amendment (Check only one.): [ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Ardsley Advisory Partners -------------------------------------------------- Address: 262 Harbor Drive, 4th Floor -------------------------------------------------- Stamford, CT 06902 -------------------------------------------------- -------------------------------------------------- Form 13F File Number: 28-04639 ------------------ The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Steven Napoli -------------------------------------------------- Title: Partner -------------------------------------------------- Phone: 203-564-4230 -------------------------------------------------- Signature, Place, and Date of Signing: /s/ Steven Napoli Stamford, CT 5/3/07 ------------------------ --------------------------- --------- [Signature] [City, State] [Date] Report Type (Check only one.): [ X ] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) [ ] 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) [ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) List of Other Managers Reporting for this Manager: none Form 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 ------------- Form 13F Information Table Entry Total: 62 ------------- Form 13F Information Table Value Total: $775,465 ------------- (thousands) List of Other Included Managers: none Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. FORM 13F INFORMATION TABLE
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 TITLE VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY NAME OF ISSUER OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE ---------------------------------- -------- ----- -------- ------- ------------------- -------- ---- ------ ---- ADA-ES INC COM 005208103 413 30,000 SOLE 30,000 0 0 ADOBE SYS INC COM 00724F101 16,680 400,000 SOLE 400,000 0 0 AETNA INC NEW COM 00817Y108 21,895 500,000 SOLE 500,000 0 0 ALTRIA GROUP INC COM 02209S111 52,712 800,000 SOLE 800,000 0 0 ANDERSONS INC COM 034164103 666 15,000 SOLE 15,000 0 0 APPLE INC COM 037833100 20,905 225,000 SOLE 225,000 0 0 APPLERA COM 038020103 8,871 300,000 SOLE 300,000 0 0 ARCHER DANIELS MIDLAND CO COM 039483102 1,101 30,000 SOLE 30,000 0 0 AVENTINE RENEWABLE ENERGY COM 05356X403 638 35,000 SOLE 35,000 0 0 AXT INC COM 00246W103 424 88,500 SOLE 88,500 0 0 BLACKBOARD INC COM 091935502 6,726 200,000 SOLE 200,000 0 0 BRAZIL ETHANOL INC UNITS $5.00 3/16/1 COM 10575X200 10,000 1,250,000 SOLE 1,250,000 0 0 CAMERON INTERNATIONAL CORP COM 13342B105 17,267 275,000 SOLE 275,000 0 0 CECO ENVIRONMENTAL CORP COM 125141101 724 58,000 SOLE 58,000 0 0 CIENA CORP COM 171779309 13,975 500,000 SOLE 500,000 0 0 CISCO SYS INC COM 17275R102 51,060 2,000,000 SOLE 2,000,000 0 0 COVANTA HOLDING CORP COM 22282E102 17,957 809,600 SOLE 809,600 0 0 CYPRESS SEMICONDUCTOR CORP COM 232806109 2,140 115,350 SOLE 115,350 0 0 DARLING INTL INC COM 237266101 650 100,000 SOLE 100,000 0 0 DEVON ENERGY CORP NEW COM 25179M103 17,305 250,000 SOLE 250,000 0 0 DURECT CORP COM 266605104 4,160 1,000,000 SOLE 1,000,000 0 0 DYADIC INTL INC DEL COM 26745T101 395 62,500 SOLE 62,500 0 0 EBAY INC COM 278642103 13,260 400,000 SOLE 400,000 0 0 EMCORE CORP COM 290846104 1,563 312,500 SOLE 312,500 0 0 ENERGY METALS CORP COM 29271B106 597 50,000 SOLE 50,000 0 0 EVERGREEN SOLAR INC COM 30033R108 1,584 162,500 SOLE 162,500 0 0 EXPRESS SCRIPTS INC COM 302182100 16,144 200,000 SOLE 200,000 0 0 F5 NETWORKS INC COM 315616102 18,337 275,000 SOLE 275,000 0 0 FINISAR CORP COM 31787A101 23,275 6,650,000 SOLE 6,650,000 0 0 FIRST SOLAR INC COM 336433107 20,050 385,500 SOLE 385,500 0 0 FORCE PROTECTION INC COM 345203202 6,875 500,000 SOLE 500,000 0 0 FUEL SYS SOLUTIONS INC COM 35952W103 1,445 78,025 SOLE 78,025 0 0 HYDROGEN CORP COM 44887Q108 4,311 900,000 SOLE 900,000 0 0 ICICI BK LTD ADR 45104G104 20,213 550,000 SOLE 550,000 0 0 INVERNESS MED INNOVATIONS INC COM 46126P106 13,791 315,000 SOLE 315,000 0 0 ISIS PHARMACEUTICALS INC COM 464330109 4,867 525,000 SOLE 525,000 0 0 JA SOLAR HOLDINGS CO LTD COM 466090107 19,953 1,103,000 SOLE 1,103,000 0 0 *W EXP JAZZ TECHNOLOGIES INC 3/15/2011 47214E110 770 1,000,000 SOLE 1,000,000 0 0 LIFECELL CORP COM 531927101 6,617 265,000 SOLE 265,000 0 0 LIGAND PHARMACEUTICALS INC CL B 53220K207 8,568 850,000 SOLE 850,000 0 0 MEMC ELECT MATLS INC COM 552715104 39,831 657,500 SOLE 657,500 0 0 MONOGRAM BIOSCIENCES INC COM 60975U108 7,760 4,000,000 SOLE 4,000,000 0 0 NETLOGIC MICROSYSTEMS INC COM 64118B100 16,638 625,000 SOLE 625,000 0 0 NOBLE CORPORATION SHS G65422100 11,802 150,000 SOLE 150,000 0 0 ORIGIN AGRITECH LIMITED SHS G67828106 6,631 745,000 SOLE 745,000 0 0 ORMAT TECHNOLOGIES INC COM 686688102 1,884 44,900 SOLE 44,900 0 0 PACIFIC ETHANOL INC COM 69423U107 937 55,000 SOLE 55,000 0 0 PROSHARES TR COM 74347R875 2,686 50,000 SOLE 50,000 0 0 QUALCOMM INC COM 747525103 42,660 1,000,000 SOLE 1,000,000 0 0 SALARY COM INC COM 794006106 3,478 312,500 SOLE 312,500 0 0 SILICON LABORATORIES INC COM 826919102 7,480 250,000 SOLE 250,000 0 0 SUN MICROSYSTEMS INC COM 866810104 10,217 1,700,000 SOLE 1,700,000 0 0 SUNOPTA INC COM 8676EP108 1,071 90,000 SOLE 90,000 0 0 TEXAS ROADHOUSE INC CL A 882681109 6,056 425,000 SOLE 425,000 0 0 THERMO FISHER SCIENTIFIC INC COM 883556102 42,075 900,000 SOLE 900,000 0 0 TRONOX INC CL A 897051108 41,045 2,850,350 SOLE 2,850,350 0 0 VAXGEN INC COM 922390208 3,633 1,985,000 SOLE 1,985,000 0 0 VERASUN ENERGY CORP COM 92336G106 1,987 100,000 SOLE 100,000 0 0 VERASUN ENERGY CORP CALL 92336G106 994 50,000 SOLE 500 0 0 W.R. GRACE & CO COM 38388F108 52,840 2,000,000 SOLE 2,000,000 0 0 WYETH COM 983024100 22,514 450,000 SOLE 450,000 0 0 YUCHENG TECHNOLOGIES LTD COM G98777108 3,362 400,200 SOLE 400,200 0 0 ZENIMAX MEDIA INC A CVT PFD COM 777222118 0 1,372,624 SOLE 1,372,624 0 0