FUNCIÓN DEL INGENIERO INDUSTRIAL EN EL MODELO

The Board of Directors and Shareholders The Chubb Corporation

We have audited the accompanying consolidated balance sheets of The Chubb Corporation as of December 31, 2012 and 2011, and the related consolidated statements of income, comprehensive income, shareholders’ equity and cash flows for each of the three years in the period ended December 31, 2012. Our audits also included the financial statement schedules listed in the Index at Item 15(a). These financial statements and schedules are the responsibility of the Corporation’s management. Our responsibility is to express an opinion on these financial statements and schedules based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of The Chubb Corporation at December 31, 2012 and 2011, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2012, in conformity with U.S. generally accepted accounting principles. Also, in our opinion, the related financial statement schedules, when considered in relation to the basic financial statements taken as a whole, present fairly in all material respects the information set forth therein.

As discussed in Note (2) to the consolidated financial statements, in 2012 The Chubb Corporation changed its method of accounting for costs associated with acquiring or renewing insurance contracts.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), The Chubb Corporation’s internal control over financial reporting as of December 31, 2012, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 28, 2013 expressed an unqualified opinion thereon.

/s/ ERNST& YOUNGLLP New York, New York

THE CHUBB CORPORATION

Consolidated Statements of Income

In Millions,

Except For Per Share Amounts Years Ended December 31

2012 2011 2010

(As Adjusted) (As Adjusted)

Revenues

Premiums Earned . . . $ 11,838 $ 11,644 $11,215 Investment Income . . . 1,556 1,644 1,665 Other Revenues . . . 8 9 13 Realized Investment Gains (Losses), Net

Total Other-Than-Temporary Impairment

Losses on Investments . . . (40) (22) (6) Other-Than-Temporary Impairment Losses on

Investments Recognized in Other

Comprehensive Income . . . (5) (1) (5) Other Realized Investment Gains, Net . . . 238 311 437

Total Realized Investment Gains, Net . . . 193 288 426 TOTAL REVENUES . . . 13,595 13,585 13,319 Losses and Expenses

Losses and Loss Expenses . . . 7,507 7,407 6,499 Amortization of Deferred Policy Acquisition Costs . . . 2,411 2,330 2,183 Other Insurance Operating Costs and Expenses . . . 1,362 1,312 1,309 Investment Expenses . . . 38 39 35 Other Expenses . . . 11 11 15 Corporate Expenses . . . 270 287 290 TOTAL LOSSES AND EXPENSES . . . 11,599 11,386 10,331 INCOME BEFORE FEDERAL AND

FOREIGN INCOME TAX . . . 1,996 2,199 2,988 Federal and Foreign Income Tax . . . 451 521 814 NET INCOME . . . $ 1,545 $ 1,678 $ 2,174 Net Income Per Share

Basic . . . $ 5.73 $ 5.80 $ 6.81 Diluted . . . 5.69 5.76 6.76

THE CHUBB CORPORATION

Consolidated Statements of Comprehensive Income

In Millions Years Ended December 31

2012 2011 2010

Net Income . . . $1,545 $1,678 $2,174 Other Comprehensive Income (Loss), Net of Tax

Change in Unrealized Appreciation of Investments . . . 275 615 69 Change in Unrealized Other-Than-Temporary

Impairment Losses on Investments . . . 2 1 7 Foreign Currency Translation Gains (Losses) . . . (11) 4 (18) Change in Postretirement Benefit Costs Not Yet

Recognized in Net Income . . . (30) (215) 12

236 405 70

COMPREHENSIVE INCOME . . . $1,781 $2,083 $2,244

THE CHUBB CORPORATION

Consolidated Balance Sheets

In Millions December 31 2012 2011 (As Adjusted) Assets Invested Assets

Short Term Investments . . . $ 2,528 $ 1,893 Fixed Maturities (cost $35,398 and $34,762) . . . 38,076 37,184 Equity Securities (cost $1,244 and $1,264) . . . 1,663 1,512 Other Invested Assets . . . 1,954 2,180 TOTAL INVESTED ASSETS . . . 44,221 42,769 Cash . . . 50 58 Accrued Investment Income . . . 424 440 Premiums Receivable . . . 2,185 2,161 Reinsurance Recoverable on Unpaid Losses and Loss Expenses . . . 1,941 1,739 Prepaid Reinsurance Premiums . . . 337 320 Deferred Policy Acquisition Costs . . . 1,206 1,210 Goodwill . . . 467 467 Other Assets . . . 1,353 1,281 TOTAL ASSETS . . . $52,184 $50,445 Liabilities

Unpaid Losses and Loss Expenses . . . $23,963 $23,068 Unearned Premiums . . . 6,361 6,322 Long Term Debt . . . 3,575 3,575 Dividend Payable to Shareholders . . . 108 107 Deferred Income Tax . . . 162 2 Accrued Expenses and Other Liabilities . . . 2,188 2,070 TOTAL LIABILITIES . . . 36,357 35,144 Commitments and Contingent Liabilities (Note 6 and 13)

Shareholders’ Equity

Preferred Stock — Authorized 8,000,000 Shares;

$1 Par Value; Issued — None . . . — — Common Stock — Authorized 1,200,000,000 Shares;

$1 Par Value; Issued 371,980,460 Shares . . . 372 372 Paid-In Surplus . . . 178 190 Retained Earnings . . . 20,009 18,903 Accumulated Other Comprehensive Income . . . 1,431 1,195 Treasury Stock, at Cost — 110,217,445 and 99,519,509 Shares . . . (6,163) (5,359)

TOTAL SHAREHOLDERS’ EQUITY . . . 15,827 15,301 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY . . . $52,184 $50,445

THE CHUBB CORPORATION

Consolidated Statements of Shareholders’ Equity

In Millions Years Ended December 31

2012 2011 2010

(As Adjusted) (As Adjusted)

Preferred Stock

Balance, Beginning and End of Year . . . $ — $ — $ — Common Stock

Balance, Beginning and End of Year . . . 372 372 372 Paid-In Surplus

Balance, Beginning of Year . . . 190 208 224 Changes Related to Stock-Based Employee

Compensation (includes tax benefit of $27, $24

and $15) . . . (12) (18) (16) Balance, End of Year . . . 178 190 208 Retained Earnings

Balance, December 31, 2009, as Previously Reported . . . 16,235

Cumulative Effect of Change in Accounting Principle,

Net of Tax . . . (273) Balance, Beginning of Year, as Adjusted . . . 18,903 17,670 15,962 Net Income . . . 1,545 1,678 2,174 Dividends Declared (per share $1.64, $1.56 and

$1.48) . . . (439) (445) (466) Balance, End of Year . . . 20,009 18,903 17,670 Accumulated Other Comprehensive Income (Loss)

Unrealized Appreciation of Investments Including Unrealized Other-Than-Temporary Impairment Losses

Balance, Beginning of Year . . . 1,736 1,120 1,044 Change During Year, Net of Tax . . . 277 616 76 Balance, End of Year . . . 2,013 1,736 1,120 Foreign Currency Translation Gains (Losses)

Balance, Beginning of Year . . . 146 142 160 Change During Year, Net of Tax . . . (11) 4 (18)

Balance, End of Year . . . 135 146 142 Postretirement Benefit Costs Not Yet Recognized

in Net Income

Balance, Beginning of Year . . . (687) (472) (484) Change During Year, Net of Tax . . . (30) (215) 12

Balance, End of Year . . . (717) (687) (472) Accumulated Other Comprehensive Income,

End of Year . . . 1,431 1,195 790 Treasury Stock, at Cost

Balance, Beginning of Year . . . (5,359) (3,783) (1,917) Repurchase of Shares . . . (935) (1,718) (2,008) Shares Issued Under Stock-Based Employee

Compensation Plans . . . 131 142 142 Balance, End of Year . . . (6,163) (5,359) (3,783) TOTAL SHAREHOLDERS’ EQUITY . . . $15,827 $15,301 $15,257

THE CHUBB CORPORATION

Consolidated Statements of Cash Flows

In Millions Years Ended December 31 2012 2011 2010

Cash Flows from Operating Activities

Net Income . . . $ 1,545 $ 1,678 $ 2,174 Adjustments to Reconcile Net Income to Net Cash

Provided by Operating Activities

Increase in Unpaid Losses and Loss Expenses, Net . . . 691 361 145 Increase in Unearned Premiums, Net . . . 32 114 21 Decrease (Increase) in Premiums Receivable . . . (24) (63) 3 Change in Income Tax Payable or Recoverable . . . (53) (102) 178 Deferred Income Tax . . . 32 25 136 Amortization of Premiums and Discounts on

Fixed Maturities . . . 163 147 154 Depreciation . . . 54 58 63 Realized Investment Gains, Net . . . (193) (288) (426) Other, Net . . . 52 (52) (117)

NET CASH PROVIDED BY OPERATING

ACTIVITIES . . . 2,299 1,878 2,331 Cash Flows from Investing Activities

Proceeds from Fixed Maturities

Sales . . . 2,271 1,730 2,287 Maturities, Calls and Redemptions . . . 4,290 3,540 2,856 Proceeds from Sales of Equity Securities . . . 160 167 129 Purchases of Fixed Maturities . . . (7,247) (5,014) (5,176) Purchases of Equity Securities . . . (112) (95) (156) Investments in Other Invested Assets, Net . . . 293 285 173 Decrease (Increase) in Short Term Investments, Net . . . (629) 11 38 Increase (Decrease) in Net Payable from Security

Transactions not Settled . . . 45 8 (24) Purchases of Property and Equipment, Net . . . (43) (52) (54) Other, Net . . . — — (6)

NET CASH PROVIDED BY (USED IN) INVESTING

ACTIVITIES . . . (972) 580 67 Cash Flows from Financing Activities

Repayment of Long Term Debt . . . — (400) — Increase (Decrease) in Funds Held under Deposit Contracts . . . (12) 7 22 Proceeds from Issuance of Common Stock Under

Stock-Based Employee Compensation Plans . . . 74 80 74 Repurchase of Shares . . . (959) (1,707) (2,003) Dividends Paid to Shareholders . . . (438) (450) (472) NET CASH USED IN FINANCING ACTIVITIES . . . (1,335) (2,470) (2,379) Net Increase (Decrease) in Cash . . . (8) (12) 19 Cash at Beginning of Year . . . 58 70 51 CASH AT END OF YEAR . . . $ 50 $ 58 $ 70