Exhibit 99.1 Harleysville Group Reports First Quarter 2004 Results HARLEYSVILLE, Pa., April 30 /PRNewswire-FirstCall/ -- Harleysville Group Inc. (Nasdaq: HGIC) today reported diluted net income of $0.55 per share in the first quarter of 2004. The company had a diluted net loss of $0.11 per share in the first quarter of 2003. Realized investment gains amounted to $0.27 per share in the first quarter of 2004, compared to a $0.01 per share realized loss in the first quarter of 2003. There was no material reserve development in the first quarter of 2004. In 2003, the company's first quarter earnings were reduced by $0.43 per share after tax due to a workers compensation reserve adjustment. The company reported diluted operating income of $0.28 per share for the first quarter of 2004, compared to a diluted operating loss of $0.10 per share in the same period of 2003. Operating income is a non-GAAP financial measure defined by the company as net income excluding after-tax realized gains and losses on investments. "We have improved our financial performance, but we're just getting started," commented Michael L. Browne, Harleysville Group's chief executive officer. "We are significantly sharpening our focus on four areas - underwriting, claims, service to agents and policyholders, and productivity - the cornerstones of our business that have the greatest impact on our near- term performance and position us well for sustainable growth and profitability in the future." Harleysville Group's overall statutory combined ratio* was 107.2 percent in the first quarter of 2004, compared to 115.4 percent in the first quarter of 2003. In 2003, the workers compensation reserve adjustment added 10.0 points to the combined ratio. First quarter net written premiums were $206.0 million in the first quarter of 2004, compared to $215.3 million in 2003. First quarter pretax investment income increased 1 percent to $21.6 million, while after-tax investment income rose 2 percent to $16.8 million. Operating cash flow for the first quarter was $11.2 million. Commercial lines Net written premiums in commercial lines declined 1 percent in the first quarter of 2004 to $168.2 million. The commercial lines statutory combined ratio was 104.7 percent in the first quarter of 2004, versus 114.1 percent in the first quarter of 2003. In 2003, the workers compensation reserve adjustment added 13.4 points to the quarter's commercial lines statutory combined ratio. Personal lines Harleysville Group's personal lines statutory combined ratio was 116.2 percent in the first quarter of 2004, versus 119.3 percent during the first quarter of 2003. In 2003, higher catastrophe losses contributed to the higher statutory combined ratio. Net written premiums were down 15 percent to $37.8 million in the first quarter of 2004. Outlook "I am very encouraged by our core strengths - a strong balance sheet, a great franchise, a solid and loyal network of independent agents, and employees who every day are engaged in active dialogue with me on ways to improve the fundamentals of our business," said Browne. "We are looking at our business and executing our strategy in a new and much more disciplined way. I am confident we will restore our company to its past high levels of financial performance." Webcast The company will host a live Webcast today, Friday, April 30, 2004, at 9:00 a.m. (ET) to discuss its first quarter results. The Webcast will be available from the Investors section of the company's Web site (www.harleysvillegroup.com) and will be archived on the Web site until April 30, 2005. GAAP and non-GAAP financial measures The company uses a non-GAAP financial measure called "operating income" that management believes is useful to investors because it illustrates the performance of normal, ongoing operations, which is important in understanding and evaluating the company's financial condition and results of operations. While this measure is utilized by investors to evaluate performance, it is not a substitute for the U.S. GAAP financial measure of net income. Therefore, a reconciliation of this non-GAAP financial measure to the U.S. GAAP financial measure of net income is provided following the Consolidated Statements of Income contained in this release. Management also uses operating income for goal setting, determining employee and senior management compensation, and evaluating performance. Corporate profile Harleysville Insurance is a premier provider of insurance products and services for small businesses and individuals, and ranks among the top 60 U.S. property/casualty insurance groups based on net written premiums. Harleysville Mutual Insurance Company owns 57 percent of Harleysville Group Inc. (Nasdaq: HGIC), a publicly traded holding company for nine regional property/casualty insurance companies collectively rated A- (Excellent) by A.M. Best Company. Harleysville Insurance, which distributes its products exclusively through independent insurance agencies, currently operates in 32 eastern and Midwestern states. Further information can be found on the company's Web site at www.harleysvillegroup.com. * "Statutory combined ratio" is a non-GAAP measure of underwriting profitability and is based on numbers determined under statutory accounting practices as filed with state insurance regulators. It is the sum of the ratio of losses to premiums earned plus the ratio of underwriting expenses to premiums written. A ratio of less than 100 percent indicates underwriting profitability. Certain of the statements contained herein (other than statements of historical facts) are forward-looking statements. Such forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and include estimates and assumptions related to economic, competitive and legislative developments. These forward- looking statements are subject to change and uncertainty that are, in many instances, beyond the company's control and have been made based upon management's expectations and beliefs concerning future developments and their potential effect on Harleysville Group Inc. There can be no assurance that future developments will be in accordance with management's expectations so that the effect of future developments on Harleysville Group will be those anticipated by management. Actual financial results including premium growth and underwriting results could differ materially from those anticipated by Harleysville Group depending on the outcome of certain factors, which may include changes in property and casualty loss trends and reserves; catastrophe losses; the insurance product pricing environment; changes in applicable law; government regulation and changes therein that may impede the ability to charge adequate rates; changes in accounting principles; performance of the financial markets; fluctuations in interest rates; availability and price of reinsurance; and the status of the labor markets in which the company operates. Harleysville Group Inc. and Subsidiaries FINANCIAL HIGHLIGHTS Quarter ended March 31 (in thousands, except per share data) 2004 2003 OPERATING RESULTS Diluted earnings (loss) per common share: Operating income (loss)* $0.28 ($0.10) Realized gains (losses), net of tax 0.27 (0.01) Net income (loss) $0.55 ($0.11) Cash dividend per common share $0.17 $0.165 FINANCIAL CONDITION March 31, 2004 December 31, 2003 Assets $2,681,227 $2,680,389 Shareholders' equity $590,059 $572,747 Per common share $19.69 $19.16 CONSOLIDATED STATEMENTS OF INCOME Quarter ended March 31 (LOSS) (in thousands, except per share data) 2004 2003 REVENUES: Premiums earned $206,948 $198,829 Investment income, net of investment expense 21,642 21,447 Realized investment gains (losses) 12,488 (433) Other income 4,564 4,520 Total revenues 245,642 224,363 LOSSES AND EXPENSES: Losses and loss settlement expenses 151,110 163,759 Amortization of deferred policy acquisition costs 50,688 48,317 Other underwriting expenses 19,638 18,557 Interest expense 1,577 1,394 Other expenses 1,419 1,211 Total expenses 224,432 233,238 Income (loss) before income taxes 21,210 (8,875) Income taxes (benefit) 4,717 (5,635) Net income (loss) $16,493 ($3,240) Weighted average number of shares outstanding: Basic 29,960,760 29,987,316 Diluted 30,048,135 29,987,316 Per common share: Basic earnings (loss) $0.55 ($0.11) Diluted earnings (loss) $0.55 ($0.11) RECONCILIATION TO OPERATING INCOME (LOSS) : Net income (loss) $16,493 ($3,240) Less realized investment gains (losses), net of taxes 8,117 (282) Operating income (loss) $8,376 ($2,958) These financial figures are unaudited. * Operating income is a non-GAAP financial measure defined by the company as net income excluding after-tax realized gains and losses on investments. Harleysville Group Inc. and Subsidiaries CONSOLIDATED BALANCE SHEETS (in thousands, except share data) March 31, 2004* December 31, 2003 ASSETS Investments: Fixed maturities: Held to maturity, at amortized cost (fair value $490,469 $460,615 $439,613 and $467,485) Available for sale, at fair value (amortized cost $1,160,672 1,233,870 1,246,019 and $1,183,158) Equity securities, at fair value (cost $108,599 and $97,189) 142,705 137,590 Short-term investments, at cost, which approximates fair value 68,691 31,411 Total investments 1,905,881 1,854,633 Cash 1,782 13,430 Premiums in course of collection 138,258 140,674 Reinsurance receivable 178,020 164,841 Accrued investment income 21,220 23,086 Deferred policy acquisition costs 98,884 99,033 Prepaid reinsurance premiums 29,781 30,899 Property and equipment, net 23,095 23,824 Deferred income taxes 40,801 43,020 Securities lending collateral 186,570 221,454 Other assets 56,935 65,495 Total assets $2,681,227 $2,680,389 LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities: Unpaid losses and loss settlement expenses $1,251,877 $1,219,977 Unearned premiums 435,842 437,883 Accounts payable and accrued expenses 93,407 91,999 Securities lending obligation 186,570 221,454 Debt 120,145 120,145 Due to affiliate 3,327 16,184 Total liabilities 2,091,168 2,107,642 Shareholders' equity: Preferred stock, $1 par value; authorized 1,000,000 shares; none issued Common stock, $1 par value, authorized 80,000,000 shares; issued 31,368,464 and 31,298,532 shares; outstanding 29,970,555 and 29,900,623 shares 31,368 31,299 Additional paid-in capital 158,062 156,997 Accumulated other comprehensive income 63,078 60,450 Retained earnings 362,238 350,844 Deferred compensation (200) (2,356) Treasury stock, at cost, 1,397,909 and 1,000,000 shares (24,487) (24,487) Total shareholders' equity 590,059 572,747 Total liabilities and shareholders' equity $2,681,227 $2,680,389 * These financial figures are unaudited. SUPPLEMENTARY FINANCIAL ANALYSTS' DATA Quarter ended March 31 (dollars in thousands) 2004 2003 Net premiums written* $206,026 $215,283 Statutory surplus * $488,264 $493,404 Pretax investment income $21,642 $21,447 Related federal income taxes 4,864 4,973 After-tax investment income $16,778 $16,474 SEGMENT INFORMATION Quarter ended March 31 (dollars in thousands) 2004 2003 Revenues: Premiums earned: Commercial lines $162,320 $148,749 Personal lines 44,628 50,080 Total premiums earned 206,948 198,829 Net investment income 21,642 21,447 Realized investment gains (losses) 12,488 (433) Other 4,564 4,520 Total revenues $245,642 $224,363 Income (loss) before income taxes : Underwriting loss: Commercial lines ($9,648) ($28,006) Personal lines (4,860) (7,894) SAP underwriting loss (14,508) (35,900) GAAP adjustments 20 4,096 GAAP underwriting loss (14,488) (31,804) Net investment income 21,642 21,447 Realized investment gains (losses) 12,488 (433) Other 1,568 1,915 Income (loss) before income taxes $21,210 ($8,875) Income taxes on net investment income $4,864 $4,973 Income tax on remaining loss (147) (10,608) Total income taxes (benefit) $4,717 ($5,635) Effective tax rate on: Net investment income 22.5% 23.2% Net income 22.2% 63.5% These financial figures are unaudited. * Statutory data is prepared in accordance with statutory accounting rules as defined by the National Association of Insurance Commissioners' Accounting Practices and Procedures Manual and therefore is not reconciled to GAAP. Harleysville Group Inc. and Subsidiaries STATUTORY DATA BY LINE OF BUSINESS* Quarter ended March 31 (dollars in thousands) 2004 2003 Net premiums written: Commercial: Automobile $56,761 $55,243 Workers' compensation 26,740 32,773 Commercial multi-peril 68,198 64,812 Other commercial 16,481 17,709 Total commercial $168,180 $170,537 Personal: Automobile $23,201 $29,597 Homeowners 12,968 13,472 Other personal 1,677 1,677 Total personal $37,846 $44,746 Total personal and commercial $206,026 $215,283 Combined ratios: Commercial: Automobile 103.1% 96.0% Workers' compensation 122.9% 192.2% Commercial multi-peril 105.1% 98.8% Other commercial 81.7% 83.8% Total commercial 104.7% 114.1% Personal: Automobile 118.3% 117.5% Homeowners 109.3% 124.0% Other personal 147.6% 114.8% Total personal 116.2% 119.3% Total personal and commercial 107.2% 115.4% Losses paid $134,060 $128,637 Net catastrophe losses incurred $2,625 $3,649 These financial figures are unaudited. * Statutory data is prepared in accordance with statutory accounting rules as defined by the National Association of Insurance Commissioners' Accounting Practices and Procedures Manual and therefore is not reconciled to GAAP. SOURCE Harleysville Group Inc. -0- 04/30/2004 /CONTACT: Mark Cummins (Investors), +1-215-256-5025, mcummins@harleysvillegroup.com; or Randy Buckwalter (Media), +1-215-256-5288, rbuckwalter@harleysvillegroup.com, both of Harleysville Group/ /Web site: http://www.harleysvillegroup.com / (HGIC) CO: Harleysville Group Inc. ST: Pennsylvania IN: INS SU: MAV CCA ERN