UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: September 30, 2009 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: Alleghany Corporation Address: 7 Times Square Tower, 17th Floor New York, NY 10036 Form 13F File Number: 28-1590 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: Peter R. Sismondo Title: Vice President Phone: 212-752-1356 Signature, Place, and Date of Signing: /s/ Peter R. Sismondo New York, NY November 13, 2009 ----------------------- ------------------------- -------------------------- [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).) Form 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 1 Form 13F Information Table Entry Total: 65 Form 13F Information Table Value Total: $ 562,620 (thousands) List of Other Included Managers: No. Form 13F File Number Name --- -------------------- ---------------------- 2 RSUI Indemnity Company SECURITIES AND EXCHANGE COMMISSIONS FORM 13F INFORMATION PREPARED FOR ALLEGHANY CORPORATION AS OF 09/30/09 ---------------------------- -------------- --------- -------- ------------------- --------------- -------- -------------- COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ---------------------------- -------------- --------- -------- ------------------- --------------- -------- -------------- INVESTMENT VOTING MARKET DISCRETION AUTHORITY VALUE SHRS OR SH/ PUT/ SOLE SHRD OTHER SOLE SHRD NONE NAME OF ISSUER TITLE OF CLASS CUSIP (X 1000) PRIN AMT PRN CALL (A) (B) (C) MANAGER (A) (B) (C) ---------------------------- -------------- --------- -------- ---------- --- ---- ---- ---- ----- -------- -------------- AT&T INC COM 00206R102 1,351 50,000 SH X 2 X AGILENT TECHNOLOGIES INC COM 00846U101 835 30,000 SH X 2 X ALEXANDER & BALDWIN INC COM 014482103 642 20,000 SH X 2 X AMERICAN EXPRESS CO COM 025816109 1,187 35,000 SH X 2 X APACHE CORP COM 037411105 6,887 75,000 SH X 1 X APACHE CORP COM 037411105 20,662 225,000 SH X 2 X APPLIED MATLS INC COM 038222105 937 70,000 SH X 2 X AUTODESK INC COM 052769106 714 30,000 SH X 2 X AUTOMATIC DATA PROCESSING IN COM 053015103 786 20,000 SH X 2 X BERKSHIRE HATHAWAY INC DEL CL B 084670207 1,329 400 SH X 2 X BOEING CO COM 097023105 812 15,000 SH X 2 X BURLINGTON NORTHN SANTA FE C COM 12189T104 79,830 1,000,000 SH X 1 X CATERPILLAR INC DEL COM 149123101 770 15,000 SH X 2 X CHEVRON CORP NEW COM 166764100 6,339 90,000 SH X 1 X CHEVRON CORP NEW COM 166764100 14,790 210,000 SH X 2 X CHUBB CORP COM 171232101 1,512 30,000 SH X 2 X CINCINNATI FINL CORP COM 172062101 19,752 760,000 SH X 1 X COCA COLA CO COM 191216100 1,343 25,000 SH X 2 X CONOCOPHILLIPS COM 20825C104 43,805 970,000 SH X 1 X CONOCOPHILLIPS COM 20825C104 27,819 616,000 SH X 2 X COSTCO WHSL CORP NEW COM 22160K105 1,410 25,000 SH X 2 X DEERE & CO COM 244199105 1,288 30,000 SH X 2 X DEVON ENERGY CORP NEW COM 25179M103 8,416 420,000 SH X 1 X DEVON ENERGY CORP NEW COM 25179M103 25,249 375,000 SH X 2 X DISNEY WALT CO COM DISNEY 254687106 1,236 45,000 SH X 2 X DU PONT EI DE NEMOURS & CO COM 263534109 1,125 35,000 SH X 2 X EOG RES INC COM 26875P101 10,355 124,000 SH X 1 X EOG RES INC COM 26875P101 6,764 81,000 SH X 2 X EMERSON ELEC CO COM 291011104 1,403 35,000 SH X 2 X EXXON MOBIL CORP COM 30231G102 2,058 30,000 SH X 2 X FPL GROUP INC COM 302571104 4,198 76,000 SH X 1 X FPL GROUP INC COM 302571104 10,438 189,000 SH X 2 X FEDEX CORP COM 31428X106 1,128 15,000 SH X 2 X GENERAL ELECTRIC CO COM 369604103 1,232 75,000 SH X 2 X GLOBAL INDS LTD COM 379336100 12,426 1,308,000 SH X 1 X GLOBAL INDS LTD COM 379336100 27,474 2,892,000 SH X 2 X HESS CORP COM 42809H107 10,692 200,000 SH X 1 X HESS CORP COM 42809H107 10,692 200,000 SH X 2 X HOME DEPOT INC COM 437076102 533 20,000 SH X 2 X INTEL CORP COM 458140100 1,663 85,000 SH X 2 X INTERNATIONAL BUSINESS MACHS COM 459200101 1,435 12,000 SH X 2 X INTUIT COM 461202103 570 20,000 SH X 2 X JOHNSON AND JOHNSON COM 478160104 1,522 25,000 SH X 2 X KELLOGG CO COM 487836108 1,231 25,000 SH X 2 X LAUDER ESTEE COS INC CL A 518439104 927 25,000 SH X 2 X LILLY ELI & CO COM 532457108 1,486 45,000 SH X 2 X LOCKHEED MARTIN CORP COM 539830109 4,685 60,000 SH X 1 X LOCKHEED MARTIN CORP COM 539830109 10,931 140,000 SH X 2 X MARRIOTT INTL INC NEW CL A 571903202 973 35,262 SH X 2 X MEDTRONIC INC COM 585055106 1,472 40,000 SH X 2 X MICROSOFT CORP COM 594918104 2,186 85,000 SH X 2 X NEWS CORP CL A 65248E104 837 70,000 SH X 2 X NOBLE ENERGY INC COM 655044105 1,319 20,000 SH X 2 X NORDSTROM INC COM 655664100 916 30,000 SH X 2 X NOVARTIS AG SPONSORED ADR 66987V109 1,260 25,000 SH X 2 X NUSTAR ENERGY LP UNIT COM 67058H102 3,397 65,500 SH X 1 X NUSTAR ENERGY LP UNIT COM 67058H102 6,975 134,500 SH X 2 X OLD REP INTL CORP COM 680223104 24,360 2,000,000 SH X 1 X PETROLEO BRASILEIRO SA PETRO SPONSORED ADR 71654V408 9,891 215,500 SH X 1 X PETROLEO BRASILEIRO SA PETRO SPONSORED ADR 71654V408 15,354 334,500 SH X 2 X PLAINS EXPL& PRODTN CO COM 726505100 5,338 193,000 SH X 1 X PLAINS EXPL& PRODTN CO COM 726505100 13,609 492,000 SH X 2 X PROCTER & GAMBLE CO COM 742718109 1,738 30,000 SH X 2 X SCHLUMBERGER LTD COM 806857108 1,490 25,000 SH X 2 X SIEMENS A G SPONSORED ADR 826197501 1,162 12,500 SH X 2 X 1 SECURITIES AND EXCHANGE COMMISSIONS FORM 13F INFORMATION PREPARED FOR ALLEGHANY CORPORATION AS OF 09/30/09 ---------------------------- -------------- --------- -------- ------------------- --------------- -------- -------------- COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ---------------------------- -------------- --------- -------- ------------------- --------------- -------- -------------- INVESTMENT VOTING MARKET DISCRETION AUTHORITY VALUE SHRS OR SH/ PUT/ SOLE SHRD OTHER SOLE SHRD NONE NAME OF ISSUER TITLE OF CLASS CUSIP (X 1000) PRIN AMT PRN CALL (A) (B) (C) MANAGER (A) (B) (C) ---------------------------- -------------- --------- -------- ---------- --- ---- ---- ---- ----- -------- -------------- SIGMA ALDRICH CORP COM 826552101 1,080 20,000 SH X 2 X STATE STR CORP COM 857477103 789 15,000 SH X 2 X SYSCO CORP COM 871829107 746 30,000 SH X 2 X 3M CO COM 88579Y101 1,624 22,000 SH X 2 X TRICO MARINE SERVICES INC COM NEW 896106200 2,779 360,000 SH X 1 X TRICO MARINE SERVICES INC COM NEW 896106200 6,678 865,000 SH X 2 X US BANCORP DEL COM NEW 902973304 547 25,000 SH X 2 X WAL MART STORES INC COM 931142103 1,473 30,000 SH X 2 X WASHINGTON POST CO CL B 939640108 936 2,000 SH X 2 X WELLS FARGO & CO NEW COM 949746101 564 20,000 SH X 2 X WILLIAMS CO INC DEL COM 969457100 9,650 540,000 SH X 1 X WILLIAMS CO INC DEL COM 969457100 15,368 860,000 SH X 2 X XTO ENERGY INC COM 98385X106 11,197 271,000 SH X 1 X XTO ENERGY INC COM 98385X106 12,355 299,000 SH X 2 X ZENITH NATL INS CORP COM 989390109 9,888 320,000 SH X 1 X GRAND TOTAL 562,620 18,385,162 2