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: June 30, 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 July 30, 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: 29 ----------- Form 13F Information Table Value Total: $ 148,820 ----------- (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 ----------------------------- ----------------- ----------- --------- -------------------- ---------- -------- ---------------- 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 SHARED NONE ----------------------------- ----------------- ----------- --------- -------------------- ---------- -------- ---------------- A D C TELECOMMUNICATIONS NOTE 3.500% 7/1 000886 AF 8 $ 4,~~550~~850 6,~~000~~500,000 PRN SOLE SOLE ~~ALLIANT TECHSYSTEMS INC NOTE 2.750% 9/1 018804 AN 4 $ 12,219 11,892,000 PRN SOLE SOLE~~ ALLERGAN INC COM 018490 10 2 $ 32,~~240~~773 4947,600 SH SOLE SOLE ANNALY CAP ~~MGT~~MGMT INC NOTE 4.000% 2/1 035710 AA 0 $ 124,~~663~~135 124,~~500~~000,000 PRN SOLE SOLE ~~BARCLAYS~~BANK BKOF ~~PLC~~AMERICA ~~IPATH~~CORPORATION ~~SHRT~~* ~~ETN~~W ~~06740C~~EXP ~~52 7 $ 7,554 359,552 PRN SOLE SOLE CHEMED CORP NEW NOTE 1.875% 5~~10/116/201 ~~16359R~~060505 AC14 76 $ ~~7,682~~17 ~~8,300,000 PRN SOLE SOLE CHESAPEAKE ENERGY CORP COM 165167 10 7 $~~ 2,~~007~~200 ~~84,700~~ SH SOLE SOLE CIENA CORP NOTE 0.250% 5/0 171779 AB 7 $ 104,~~815~~059 125,~~883~~000,000 PRN SOLE SOLE ~~CITIGROUP~~CIENA ~~INC~~CORP COM ~~172967~~NEW 10171779 130 9 $ ~~6,848~~131 110,~~690,900~~350 SH SOLE SOLE ~~COEUR~~CITIGROUP DINC ~~ALENE~~COM ~~MINES~~172967 ~~CORP~~10 ~~IDA NOTE 3.250% 3/~~1 ~~192108 AR 9~~ $ 1,~~920~~228 2326,~~000,000~~500 ~~PRN~~SH SOLE SOLE COVANTA HLDG CORP DBCV 1.000% 2/0 22282E AA 0 $ ~~2,825~~ 3,~~000,000~~279 ~~PRN SOLE SOLE ENERGY CONVERSION DEVICES IN NOTE~~ 3~~.000% 6/1 292659 AA 7 $ 1~~,~~629 2,~~500,000 PRN SOLE SOLE ~~EURONET WORLDWIDE INC NOTE 3.500%10/1 298736 AF 6 $ 11,356 11,811,000 PRN SOLE SOLE~~ EXTERRAN HLDGS INC NOTE 4.250% 6/1 30225X AA 1 $ 116,~~298~~461 95,000,000 PRN SOLE SOLE ~~GLOBAL INDS LTD DBCV 2.750% 8/0 379336 AE 0 $ 1,969 3,000,000 PRN SOLE SOLE~~ GREATBATCH INC SDCV 2.250% 86/01 39153L AB 2 $ 810,~~566~~800 912,~~500~~000,000 PRN SOLE SOLE HERTZ GLOBAL HOLDINGS INC NOTE 5.250% 6/01 42805T AA 3 $ 1210,~~154~~024 87,500,000 PRN SOLE SOLE HOLOGIC INC FRNT 2.000%12/1 436440 AA 9 $ 76,~~709~~059 ~~8,500,000 PRN SOLE SOLE HORNBECK OFFSHORE SVCS INC N FRNT 1.625%11/1 440543 AE 6 $~~ 7,~~871 9~~130,~~310,~~000 PRN SOLE SOLE ~~ICONIX BRAND GROUP INC NOTE 1.875% 6/3 451055 AB 3 $ 5,659 6,010,000 PRN SOLE SOLE~~ KING PHARMACEUTICALS INC NOTE 1.250% 4/0 495582 AJ 7 $ 43,~~679~~412 53,~~000~~900,000 PRN SOLE SOLE ~~LIFEPOINT~~LINCARE ~~HOSPITALS~~HLDGS INC ~~SDCV~~DBCV 32.~~250~~750% 811/10 ~~53219L~~532791 AGAE 40 $ 1011,~~286~~943 10,~~500~~000,000 PRN SOLE SOLE LINCARE HLDGS INC ~~DBCV~~COM ~~2.750%11/0~~ 532791 AE10 0 $ 149,~~994~~008 12277,~~838,000~~090 ~~PRN~~SH SOLE SOLE ~~LINCARE~~MGIC ~~HLDGS~~INVT ~~INC~~CORP WIS NOTE 25.~~750~~000%11 5/0 ~~532791~~552848 AFAD 75 $ 24,~~970~~091 24,500,000 PRN SOLE SOLE ~~MICRON~~MASTEC ~~TECHNOLOGY~~ INC NOTE 14.~~875~~000% 6/01 ~~595112~~576323 AHAG 64 $ 116,~~578~~704 127,~~000~~425,000 PRN SOLE SOLE MICRON TECHNOLOGY INC NOTE 41.~~250~~875%10 6/10 595112 AJAH 26 $ 76,~~602~~894 37,~~500~~800,000 PRN SOLE SOLE MOLSON COORS BREWING CO CL B 60871R 20 9 $ 1,~~249~~555 2936,700 SH SOLE SOLE ~~NEWMONT MINING CORP COM 651639 10 6 $ 7,553 148,300 SH SOLE SOLE~~ NII HLDGS INC NOTE 3.125% 6/1 62913F AJ 1 $ 114,~~414~~743 115,~~881~~000,000 PRN SOLE SOLE ~~PARKER~~NETAPP ~~DRILLING~~INC CO NOTE 21.~~125~~750% 76/10 ~~701081~~64110D ARAB 20 $ 23,~~225~~223 2,~~355~~500,000 PRN SOLE SOLE ~~PENN~~PARKER VADRILLING ~~CORP~~CO ~~COM 707882 10 6 $ 96 3,900 SH SOLE SOLE SESI L L C~~ NOTE 12.~~500~~125%12 7/1 ~~78412F~~701081 AHAR 72 $ 103,~~457~~085 113,~~125~~355,000 PRN SOLE SOLE ~~SPDR~~PIONEER ~~S&P~~NAT ~~500~~RES ~~ETF TR UNIT SER 1 S&P 78462F 10 3 $ 16,099 137,600 SH SOLE SOLE ST MARY LD & EXPL~~ CO NOTE 32.~~500~~875% 41/01 ~~792228~~723787 ADAH 0 $ 126,~~403~~247 125,~~240~~446,000 PRN SOLE SOLE ~~SANDISK~~SESI ~~CORP~~L ~~NOTE~~L C FRNT 1.~~000~~500% 512/1 ~~80004C~~78412F ACAH 57 $ 36,~~934~~972 47,~~500~~570,000 PRN SOLE SOLE ~~STERLITE~~SOTHEBYS ~~INDS INDIA LTD~~ NOTE 43.~~000~~125%10 6/31 ~~859737~~835898 ABAC 41 $ 158,~~415~~777 149,~~300~~000,000 PRN SOLE SOLE STILLWATER MNG CO NOTE 1.875% 3/1 86074Q AF 9 $ 1014,~~249~~147 1115,~~000~~845,000 PRN SOLE SOLE ~~WEBMD~~TELECOMMUNICATION ~~CORP~~SYS ~~NOTE~~INC ~~3.125%~~CL ~~9/0~~A ~~94769M~~87929J AG10 03 $ ~~11,837~~83 820,~~921,~~000 ~~PRN~~SH SOLE SOLE WESTERN ~~REFINING~~REF INC COM 959319 10 4 $ 1,~~565~~120 ~~284~~222,~~600~~679 SH SOLE SOLE ~~WRIGHT~~YRC ~~MED~~WORLDWIDE ~~GROUP~~ INC ~~NOTE~~COM ~~2.625%12/0~~984249 ~~98235T~~10 AA2 5 $ 103,~~111~~000 1118,~~250,000~~800 ~~PRN~~SH SOLE SOLE

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