13F-HR 1 d13fhr.txt FORM 13F 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, 2010 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: Tamalpais Asset Management LP ------------------------------------------- Address: 3 Harbor Dr Ste. 204 ------------------------------------------- Sausalito, CA 94965 ------------------------------------------- Form 13F File Number: 28-12446 -------- 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: Darren Huber ------------------------------------------- Title: Chief Compliance Officer ------------------------------------------- Phone: 415-289-3606 ------------------------------------------- Signature, Place, and Date of Signing: /s/ Darren Huber Sausalito, CA May 4, 2010 ------------------------ ------------------------ ------------------------ [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: 40 ----------- Form 13F Information Table Value Total: $ 307,250 ----------- (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

~~FORM 13F INFORMATION TABLE~~ COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ----------------------------- --------------- ---- --------- --------- -------------------- ---------- -------- ---------------- ~~VOTING AUTHORITY~~ VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER ~~----------------~~VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE ~~SHARE~~SHARED NONE ----------------------------- --------------- ---- --------- --------- ------- --- ---------- ---------- -------- ----- ----- ------ A D C TELECOMMUNICATIONS NOTE 3.500% 7/1 ~~000886AF8~~000886 AF 8 $ 24,~~720~~550 46,000,000 PRN SOLE SOLE ~~AFFYMETRIX~~ALLIANT TECHSYSTEMS INC NOTE 32.~~500~~750% 19/1 ~~00826TAG3~~018804 AN 4 $ ~~443~~12,219 ~~500~~11,892,000 PRN SOLE SOLE ~~ALLIANT~~ALLERGAN ~~TECHSYSTEMS~~INC COM 018490 10 2 $ 3,240 49,600 SH SOLE SOLE ANNALY CAP MGT INC NOTE 24.~~750~~000% 2/1 ~~018804AH7~~035710 AA 0 $13 12,~~727~~663 12,500,000 PRN SOLE SOLE ~~AMR~~BARCLAYS ~~CORP~~BK ~~COM~~PLC ~~001765106~~IPATH SHRT ETN 06740C 52 7 $ 27,~~655~~554 ~~343~~359,~~500~~552 SHPRN SOLE SOLE CHEMED CORP NEW NOTE 1.875% 5/1 ~~16359RAC7~~16359R AC 7 $ 97,~~418~~682 108,~~750~~300,000 PRN SOLE SOLE CHESAPEAKE ENERGY CORP COM ~~165167107~~165167 10 7 $ 2,~~259~~007 8784,~~300~~700 SH SOLE SOLE ~~CHINA~~CIENA ~~MED~~CORP ~~TECHNOLOGIES INC~~ NOTE 40.~~000~~250% 85/10 ~~169483AC8~~171779 AB 7 $ 110,~~929~~815 312,883,000 PRN SOLE SOLE ~~CIENA~~CITIGROUP ~~CORP~~INC ~~NOTE~~COM ~~0.250%~~172967 ~~5/0~~10 ~~171779AB7~~1 $ 96,~~828~~848 121,~~956~~690,900 ~~PRN~~SH SOLE SOLE COEUR D ALENE MINES CORP IDA NOTE 3.250% 3/1 ~~192108AR9~~192108 $AR ~~6,225 6,903 PRN SOLE SOLE COINSTAR INC NOTE 4.000%~~ 9/0 ~~19259PAF9~~ $ 91,~~805~~920 92,~~771~~000,000 PRN SOLE SOLE DCOVANTA RHLDG ~~HORTON~~CORP ~~INC~~DBCV ~~NOTE 2~~1.000% 52/10 ~~23331ABB4~~22282E AA 0 $ 52,~~552~~825 53,000,000 PRN SOLE SOLE ENERGY CONVERSION DEVICES IN NOTE 3.000% 6/1 ~~292659AA7~~292659 AA 7 $ 1,~~311~~629 2,500,000 PRN SOLE SOLE EURONET WORLDWIDE INC NOTE 3.500%10/1 ~~298736AF6~~298736 AF 6 $12 11,~~762~~356 1311,~~561~~811,000 PRN SOLE SOLE EXTERRAN HLDGS INC NOTE 4.250% 6/1 ~~30225XAA1~~30225X AA 1 $19 11,~~265~~298 169,~~325~~000,000 PRN SOLE SOLE GLOBAL INDS LTD DBCV 2.750% 8/0 ~~379336AE0~~379336 AE 0 $ 61,~~992~~969 113,~~200~~000,000 PRN SOLE SOLE GREATBATCH INC SDCV 2.250% 68/10 ~~39153LAB2~~39153L $AB ~~4,285~~2 ~~5,000 PRN SOLE SOLE HECLA MNG CO 6.5% CONV PFD 422704304~~ $ 28,~~457~~566 379,~~900~~500,000 PRN SOLE SOLE HERTZ GLOBAL HOLDINGS INC NOTE 5.250% 6/0 ~~42805TAA3~~42805T AA 3 $ 712,~~366~~154 48,500,000 PRN SOLE SOLE HOLOGIC INC FRNT 2.000%12/1 ~~436440AA9~~436440 AA 9 $ 57,~~570~~709 68,500,000 PRN SOLE SOLE HORNBECK OFFSHORE SVCS INC N FRNT 1.625%11/1 ~~440543AE6~~440543 AE 6 $ 37,~~209~~871 39,~~750~~310,000 PRN SOLE SOLE ICONIX BRAND GROUP INC NOTE 1.875% 6/3 ~~451055AB3~~451055 AB 3 $ 5,~~602~~659 6,~~260~~010,000 PRN SOLE SOLE ~~ITRON~~KING PHARMACEUTICALS INC ~~COM~~NOTE ~~465741106~~1.250% 4/0 495582 AJ 7 $ 4,679 5,000,000 PRN SOLE SOLE LIFEPOINT HOSPITALS INC SDCV 3.250% 8/1 53219L AG 4 $ 10,~~622~~286 2410,500,000 SHPRN SOLE SOLE ~~KING~~LINCARE ~~PHARMACEUTICALS~~HLDGS INC DBCV 2.750%11/0 532791 AE 0 $ 14,994 12,838,000 PRN SOLE SOLE LINCARE HLDGS INC NOTE 2.750%11/0 532791 AF 7 $ 2,970 2,500,000 PRN SOLE SOLE MICRON TECHNOLOGY INC NOTE 1.~~250~~875% 46/0 ~~495582AJ7~~595112 AH 6 $ 11,578 12,~~176~~000,000 13PRN SOLE SOLE MICRON TECHNOLOGY INC NOTE 4.250%10/1 595112 AJ 2 $ 7,~~100~~602 3,500,000 PRN SOLE SOLE ~~LIFEPOINT~~MOLSON ~~HOSPITALS~~COORS BREWING CO CL B 60871R 20 9 $ 1,249 29,700 SH SOLE SOLE NEWMONT MINING CORP COM 651639 10 6 $ 7,553 148,300 SH SOLE SOLE NII HLDGS INC NOTE 3.~~500~~125% 56/1 ~~53219LAH2~~62913F AJ 1 $ 11,414 11,881,000 PRN SOLE SOLE PARKER DRILLING CO NOTE 2.125% 7/1 701081 AR 2 $ 2,225 2,355,000 PRN SOLE SOLE PENN VA CORP COM 707882 10 6 $ 96 3,~~805~~900 SH SOLE SOLE SESI L L C NOTE 1.500%12/1 78412F AH 7 $ 10,457 11,125,000 PRN SOLE SOLE SPDR S&P 500 ETF TR UNIT SER 1 S&P 78462F 10 3 $ 16,099 137,600 SH SOLE SOLE ST MARY LD & EXPL CO NOTE 3.500% 4/0 792228 AD 0 $ 12,403 12,240,000 PRN SOLE SOLE ~~MICRON~~SANDISK ~~TECHNOLOGY~~CORP ~~INC~~NOTE 1.000% 5/1 80004C AC 5 $ 3,934 4,500,000 PRN SOLE SOLE STERLITE INDS INDIA LTD NOTE 4.000%10/3 859737 AB 4 $ 15,415 14,300,000 PRN SOLE SOLE STILLWATER MNG CO NOTE 1.875% 63/1 86074Q AF 9 $ 10,249 11,000,000 PRN SOLE SOLE WEBMD CORP NOTE 3.125% 9/0 ~~595112AH6~~94769M AG 0 $ 11,837 8,~~712~~921,000 9PRN SOLE SOLE WESTERN REFINING INC COM 959319 10 4 $ 1,565 284,600 SH SOLE SOLE WRIGHT MED GROUP INC NOTE 2.625%12/0 98235T AA 5 $ 10,111 11,250,000 PRN SOLE SOLE

FORM 13F INFORMATION TABLE COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ----------------------------- ------------------- --------- -------- ---------------- ---------- -------- ---------------- VOTING AUTHORITY VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER ---------------- NAME OF TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARE NONE ----------------------------- ------------------- --------- -------- ------- --- ---- ---------- -------- ----- ----- ---- MICRON TECHNOLOGY INC NOTE 4.250%10/1 595112AJ2 $11,031 5,000 PRN SOLE SOLE NASDAQ OMX GROUP INC NOTE 2.500% 8/1 631103AA6 $13,089 14,035 PRN SOLE SOLE NEWMONT MINING CORP COM 651639106 $ 5,460 115,400 SH SOLE SOLE NII HLDGS INC NOTE 3.125% 6/1 62913FAJ1 $15,808 17,200 PRN SOLE SOLE PARKER DRILLING CO NOTE 2.125% 7/1 701081AR2 $ 3,494 3,860 PRN SOLE SOLE PENN VA CORP NOTE 4.500%11/1 707882AA4 $ 4,874 5,150 PRN SOLE SOLE REGIS CORP MINN NOTE 5.000% 7/1 758932AA5 $ 6,797 5,500 PRN SOLE SOLE SANDISK CORP NOTE 1.000% 5/1 80004CAC5 $15,045 18,000 PRN SOLE SOLE ST MARY LD & EXPL CO NOTE 3.500% 4/0 792228AD0 $ 9,974 10,000 PRN SOLE SOLE STERLITE INDS INDIA LTD NOTE 4.000%10/3 859737AB4 $ 7,881 7,500 PRN SOLE SOLE STILLWATER MNG CO NOTE 1.875% 3/1 86074QAF9 $13,540 16,000 PRN SOLE SOLE TEREX CORP NEW NOTE 4.000% 6/0 880779AV5 $ 4,300 3,000 PRN SOLE SOLE TRANSOCEAN INC NOTE 1.500%12/1 893830AW9 $ 4,844 5,000 PRN SOLE SOLE TYSON FOODS INC NOTE 3.250%10/1 902494AP8 $ 4,163 4,000 PRN SOLE SOLE VORNADO RLTY L P DEB 3.875% 4/1 929043AC1 $ 5,490 5,000 PRN SOLE SOLE WEBMD CORP NOTE 3.125% 9/0 94769MAG0 $16,512 14,531 PRN SOLE SOLE WESTERN REFNG INC COM 959319104 $ 1,055 223,900 SH SOLE SOLE WRIGHT MED GROUP INC NOTE 2.625%12/0 98235TAA5 $ 6,190 7,000 PRN SOLE SOLE

Filing Compare · Tamalpais Asset Management LP