13F-HR 1 form13f_ms-research.dec2010.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: December 31, 2010 Check here if Amendment [ ]; Amendment Number: ______ This Amendment: [ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Main Street Research LLC Address: 30 Liberty Ship Way, Suite 3330 Sausalito, CA 94965 Form 13F File Number: 28-____________ 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: Charito A. Mittelman Title: Chief Compliance Officer Phone: 415-289-1010 Signature, Place, and Date of Signing: Charito A. Mittelman Sausalito, CA February 16, 2011 Report Type: [x] 13F HOLDINGS REPORT. [ ] 13F NOTICE. [ ] 13F COMBINATION REPORT. FORM 13F SUMMARy: Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 157 Form 13F Information Table Value Total: $234,918 List of Other Included Managers: NONE FORM 13F INFORMATION TABLE FORM 13F INFORMATION TABLE VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- 1/100 Berkshire Hathaway Cl A COM 084990175 843 700 SH Sole 700 3M Company COM 88579Y101 1715 19869 SH Sole 19869 AFLAC Inc COM 001055102 360 6376 SH Sole 6376 Abbott Laboratories COM 002824100 876 18291 SH Sole 18291 Accenture Plc COM G1150G111 219 4525 SH Sole 4525 Advent Software Inc COM 007974108 4422 76347 SH Sole 76347 Agilent Technologies COM 00846u101 386 9312 SH Sole 9312 Air Prod & Chemicals Inc COM 009158106 226 2480 SH Sole 2480 Alberto Culver COM 013078100 273 7375 SH Sole 7375 Allianz AG Adr COM 018805101 125 10465 SH Sole 10465 Altria Group Inc COM 02209S103 270 10983 SH Sole 10983 Aluminum Corp China COM 022276109 1416 62111 SH Sole 62111 Amcor Ltd. COM 02341R302 257 9286 SH Sole 9286 American Electric Power COM 025537101 5490 152596 SH Sole 152596 American Express COM 025816109 791 18437 SH Sole 18437 Anadarko Petroleum Corp COM 032511107 235 3091 SH Sole 3091 Apple Computer COM 037833100 6886 21349 SH Sole 21349 Applied Nanotech Holding COM 03824b103 31 80000 SH Sole 80000 Astrazeneca Plc Adr F COM 046353108 225 4879 SH Sole 4879 At&t Inc COM 00206R102 2047 69675 SH Sole 69675 Auto Data Processing COM 053015103 509 11005 SH Sole 11005 BASF AG Spons Adr COM 055262505 892 11080 SH Sole 11080 Bank America Corp New COM 060505104 250 18761 SH Sole 18761 Bard C R Inc COM 067383109 3250 35417 SH Sole 35417 Bayer AG COM 072730302 615 8325 SH Sole 8325 Berkshire Hathaway CL B COM 113809107 378 4721 SH Sole 4721 Best Buy Inc COM 086516101 1522 44378 SH Sole 44378 Biogen IDEC Inc COM 09062X103 407 6075 SH Sole 6075 Borg Warner Automotive COM 099724106 1048 14490 SH Sole 14490 Brasil Telecom S.A. COM 10553M101 669 30526 SH Sole 30526 Brazil Foods SA Adr COM 10552T107 973 57618 SH Sole 57618 Briggs & Stratton Corp COM 109043109 1618 82170 SH Sole 82170 Bristol-Myers Squibb Co. Com. COM 110122108 2772 104682 SH Sole 104682 C V S Caremark Corp COM 126650100 146 4201 SH Sole 4201 CSX Corp COM 126408103 366 5669 SH Sole 5669 Calpine Corp possible entitlem COM 13199acy5 0 60000 SH Sole 60000 Canon Inc COM 138006309 1182 23015 SH Sole 23015 Cardinal Health COM 14149Y108 84 2199 SH Sole 2199 Caterpillar Inc COM 149123101 375 4000 SH Sole 4000 Celgene Corp COM 151020104 487 8234 SH Sole 8234 Charles Schwab Corp COM 808513105 1513 88419 SH Sole 88419 Chevron Corp COM 166764100 6542 71689 SH Sole 71689 China Mobile Hong Kong Ltd COM 16941M109 2355 47466 SH Sole 47466 Cisco Systems, Inc. COM 17275r102 1044 51622 SH Sole 51622 Citigroup Inc. COM 172967101 98 20654 SH Sole 20654 Clorox Co. Calif. COM 189054109 839 13252 SH Sole 13252 Cnooc Ltd COM 126132109 4402 18466 SH Sole 18466 Coca Cola Co. COM 191216100 867 13188 SH Sole 13188 Colgate-Palmolive Co COM 194162103 1804 22441 SH Sole 22441 Comcast Corp Cl A COM 20030N101 284 12908 SH Sole 12908 Commerce Energy Group COM 20061Q106 0 10000 SH Sole 10000 Computer Sciences Corp COM 205363104 280 5650 SH Sole 5650 Conoco Phillips COM 20825c104 418 6143 SH Sole 6143 Corning Inc COM 219350105 2276 117797 SH Sole 117797 Costco Corp COM 22160K105 2506 34701 SH Sole 34701 Danaher Corp Del COM 235851102 4367 92590 SH Sole 92590 Diageo Plc New ADR COM 25243q205 2951 39698 SH Sole 39698 Dominion Resources COM 25746u109 456 10685 SH Sole 10685 DuPont COM 263534109 275 5523 SH Sole 5523 Emerson Electric Co COM 291011104 5488 95997 SH Sole 95997 Enviromental Oil Processing COM 29407Q100 0 10000 SH Sole 10000 Exxon Mobil Corp COM 30231G102 3979 54413 SH Sole 54413 Fastenal Company COM 311900104 465 7755 SH Sole 7755 FedEx Corp COM 31428X106 1690 18169 SH Sole 18169 Forest Laboratories COM 345838106 274 8565 SH Sole 8565 Franklin Resources Inc COM 354613101 317 2846 SH Sole 2846 Freeport McMoran Cp & Gold COM 35671d857 2473 20596 SH Sole 20596 Frontier Communications COM 35906a108 127 13075 SH Sole 13075 General Electric Co. COM 369604103 555 30337 SH Sole 30337 General Mills, Inc. COM 370334104 837 23505 SH Sole 23505 Gilead Sciences COM 375558103 2713 74853 SH Sole 74853 GlaxoSmithKline PLC COM 37733w105 256 6527 SH Sole 6527 Gold Corp Inc COM 380956409 427 9291 SH Sole 9291 Heinz H J Co COM 423074103 212 4280 SH Sole 4280 Hewlett Packard COM 428236103 1294 30731 SH Sole 30731 Honda Motor Ltd COM 438128308 773 19570 SH Sole 19570 Int'l Business Machines COM 459200101 3189 21729 SH Sole 21729 Intel Corp COM 458140100 549 26089 SH Sole 26089 Intuitive Surgical Inc COM 46120e602 258 1001 SH Sole 1001 J P Morgan Chase & Co. COM 46625h100 1008 23770 SH Sole 23770 Johnson & Johnson COM 478160104 3814 61672 SH Sole 61672 Johnson Controls Inc COM 478366107 5169 135304 SH Sole 135304 Kellogg Co. COM 487836108 450 8809 SH Sole 8809 Kons Philips Elec NV New COM 500472303 979 31876 SH Sole 31876 Korea Electric Power Corp. COM 500631106 1290 95478 SH Sole 95478 Kraft foods Inc COM 50075n104 457 14511 SH Sole 14511 Massmutual Corporate Investors COM 576292106 1030 33700 SH Sole 33700 McDonald's Corp. COM 580135101 3152 41058 SH Sole 41058 Medco Health Solutions COM 58405U102 442 7214 SH Sole 7214 Merck & Co Inc COM 589331107 580 16106 SH Sole 16106 Microsoft Corp COM 594918104 261 9360 SH Sole 9360 Morgan Stanley COM 617446448 3281 120594 SH Sole 120594 Nestle SA ADR COM 641069406 322 5479 SH Sole 5479 Newmont Mining Corp. COM 651639106 796 12952 SH Sole 12952 Noble Energy Inc COM 655044105 1431 16622 SH Sole 16622 Novartis A G COM 66987V109 387 6557 SH Sole 6557 Nucor Corp COM 670346105 1773 40462 SH Sole 40462 Occidental Petroleum COM 674599105 206 2099 SH Sole 2099 Oracle COM 68389X105 1350 43125 SH Sole 43125 Pac Mercantile Bancorp COM 694552100 47 12650 SH Sole 12650 Pacific Gas & Electric COM 69331C108 4009 83793 SH Sole 83793 Parker-Hannifin Corp COM 701094104 3121 36159 SH Sole 36159 Pepsico COM 713448108 2063 31572 SH Sole 31572 Perrigo Company COM 714290103 710 11205 SH Sole 11205 PetroChina Co. Ltd. COM 71646e100 257 1954 SH Sole 1954 Petroleo Brasileiro COM 71654v408 989 26141 SH Sole 26141 Pfizer, Inc. COM 717081103 461 26353 SH Sole 26353 Philip Morris International COM 718172109 575 9830 SH Sole 9830 Procter & Gamble Co. COM 742718109 20676 321408 SH Sole 321408 Qualcomm Inc COM 747525103 1078 21783 SH Sole 21783 Ross Stores Inc COM 778296103 292 4610 SH Sole 4610 Rutter Inc COM 783474109 3 54000 SH Sole 54000 S A P Aktiengesell ADR COM 803054204 1251 24725 SH Sole 24725 Saleforce.com COM 79466l302 2020 15305 SH Sole 15305 Sanofi Aventis Adr COM 80105n105 243 7540 SH Sole 7540 Sempra Energy COM 816851109 408 7775 SH Sole 7775 Siemens AG Adr COM 826197501 2010 16180 SH Sole 16180 Sirius XM Radio COM 82967N108 83 51130 SH Sole 51130 Smith & Nephew Adr COM 83175M205 2930 55763 SH Sole 55763 Smucker JM Company COM 832696405 265 4033 SH Sole 4033 Snap-on Inc. COM 833034101 1329 23482 SH Sole 23482 St. Jude Medical COM 790849103 233 5460 SH Sole 5460 Stanley Black & Decker COM 854502101 829 12402 SH Sole 12402 Sysco Corp. COM 871829107 234 7948 SH Sole 7948 Target Corp COM 87612E106 3815 63450 SH Sole 63450 Tata Motors Ltd COM 876568502 3557 121220 SH Sole 121220 Telmex Internacion Ord COM p9043m104 30 32000 SH Sole 32000 Teva Pharm Inds Ltd COM 881624209 263 5044 SH Sole 5044 The Southern Company COM 842587107 284 7432 SH Sole 7432 Total Fina Elf COM 89151e109 623 11658 SH Sole 11658 Unilever PLC Amer Shs F COM 904767704 711 23030 SH Sole 23030 Union Pacific Corp COM 907818108 257 2777 SH Sole 2777 United Technologies COM 913017109 1834 23303 SH Sole 23303 VMware Inc COM 928563402 6114 68766 SH Sole 68766 Verizon Communications COM 92343v104 669 18706 SH Sole 18706 Vodafone Group COM 92857w209 212 8030 SH Sole 8030 Wal-Mart Stores Inc. COM 931142103 199 3691 SH Sole 3691 Walgreen Co. COM 931422109 271 6949 SH Sole 6949 Walt Disney Holding Co. COM 254687106 211 5613 SH Sole 5613 Watson Pharmaceuticals COM 942683103 6626 128282 SH Sole 128282 Wells Fargo COM 949746101 605 19529 SH Sole 19529 Wesco Financial Corp COM 950817106 665 1805 SH Sole 1805 Westamerica Bancorp COM 957090103 2894 52168 SH Sole 52168 Whole Foods Market Inc COM 966837106 4410 87162 SH Sole 87162 Yum Brands Inc COM 988498101 3462 70583 SH Sole 70583 Zimmer Holdings Inc COM 98956P102 208 3878 SH Sole 3878 American Century Strat Alloc C 025085739 155 28097.372 SH Sole 28097.372 American Growth Fund of Americ 991 32575.065 SH Sole 32575.065 American Mutual Fund F-2 4441 175454.794 SH Sole 175454.794 Franklin Income C 353496805 102 46506.805 SH Sole 46506.805 American Fund Capital World Gr 3132 87698.621 SH Sole 87698.621 American New World Fund F-2 1012 18549.562 SH Sole 18549.562 Health Care Reit 42217K106 373 7835 SH Sole 7835 Buckeye Partners LP 118230101 4082 61087 SH Sole 61087 Kinder Morgan Energy LP 494550106 3674 52285 SH Sole 52285 Magellan Midstream Partners 559080106 579 10249 SH Sole 10249 Vanguard Total Stock Market VI 922908769 373 5749 SH Sole 5749 Total 234,918