Item 1. Report to Shareholders T. Rowe Price Mid-Cap Growth Portfolio Certified Financials Financial Highlights T. Rowe Price Mid-Cap Growth Portfolio Certified Financials (Unaudited) For a share outstanding throughout each period ________________________________________________________________ Mid-Cap Growth shares 6 Months Year Ended Ended 6/30/03 12/31/02 12/31/01 12/31/00 12/31/99 12/31/98 NET ASSET VALUE Beginning of period $ 14.38 $ 18.26 $ 18.43 $ 17.46 $ 14.27 $ 11.88 Investment activities Net investment income (loss) (0.03) (0.08) (0.05) -- -- (0.01) Net realized and unrealized gain (loss) 2.64 (3.80) (0.12) 1.29 3.37 2.61 Total from investment activities 2.61 (3.88) (0.17) 1.29 3.37 2.60 Distributions Net realized gain -- -- -- (0.32) (0.18) (0.21) NET ASSET VALUE End of period $ 16.99 $ 14.38 $ 18.26 $ 18.43 $ 17.46 $ 14.27 -------- -------- -------- -------- -------- -------- Ratios/Supplemental Data Total return^ 18.15% (21.25)% (0.92)% 7.41% 23.73% 22.08% Ratio of total expenses to average net assets 0.85%! 0.85% 0.85% 0.85% 0.85% 0.85% Ratio of net investment income (loss) to average net assets (0.48)%! (0.48)% (0.29)% (0.01)% 0.01% (0.11)% Portfolio turnover rate 36.3%! 33.7% 41.8% 46.3% 48.1% 47.8% Net assets, end of period (in thousands) $371,556 $298,288 $350,094 $311,604 $127,228 $ 29,911 ^ Total return reflects the rate that an investor would have earned on an investment in the fund during each period, assuming reinvestment of all distributions ! Annualized The accompanying notes are an integral part of these financial statements. Financial Highlights T. Rowe Price Mid-Cap Growth Portfolio Certified Financials (Unaudited) For a share outstanding throughout each period ______________________________ Mid-Cap Growth-II shares 6 Months 4/30/02 Ended Through 6/30/03 12/31/02 NET ASSET VALUE Beginning of period $ 14.36 $ 17.87 Investment activities Net investment income (loss) (0.03) (0.02) Net realized and unrealized gain (loss) 2.62 (3.49) Total from investment activities 2.59 (3.51) NET ASSET VALUE End of period $ 16.95 $ 14.36 --------------- --------------- Ratios/Supplemental Data Total return^ 18.04% (19.64)% Ratio of total expenses to average net assets 1.10%! 1.10%! Ratio of net investment income (loss)to average net assets (0.73)%! (0.63)%! Portfolio turnover rate 36.3%! 33.7% Net assets, end of period (in thousands) $ 10,848 $ 3,988 ^ Total return reflects the rate that an investor would have earned on an investment in the fund during each period, assuming reinvestment of all distributions ! Annualized The accompanying notes are an integral part of these financial statements. Statement of Net Assets T. Rowe Price Mid-Cap Growth Portfolio Certified Financials June 30, 2003 (Unaudited) Shares Value In thousands Common Stocks 94.5% CONSUMER DISCRETIONARY 15.3% Hotels, Restaurants & Leisure 2.4% The Cheesecake Factory * 80,400 $ 2,886 Fairmont Hotels 102,300 2,394 Starbucks * 152,900 3,749 9,029 Household Durables 0.5% Garmin * 48,000 1,914 1,914 Leisure Equipment & Products 1.0% Brunswick 151,000 3,778 3,778 Media 3.5% Catalina Marketing * 150,700 2,660 Cox Radio, Class A * 119,000 2,750 Lamar Advertising, Class A * 44,600 1,570 Rogers Communications, Class B 157,000 2,520 Scholastic * 59,100 1,760 Scripps, Class A 13,000 1,153 Westwood One * 30,000 1,018 13,431 Multiline Retail 2.5% 99 Cents Only Stores * 25,000 858 Dollar Tree Stores * 141,000 4,474 Family Dollar Stores 108,000 4,120 9,452 Specialty Retail 4.7% Best Buy * 115,600 5,077 O'Reilly Automotive * 95,200 3,179 Ross Stores 87,000 3,719 Weight Watchers * 66,000 3,002 Williams-Sonoma * 106,000 3,095 18,072 Textiles, Apparel, & Luxury Goods 0.7% Coach * 57,000 2,835 2,835 Total Consumer Discretionary 58,511 CONSUMER STAPLES 1.9% Beverages 0.4% Cott * 79,700 1,649 1,649 Food & Staples Retailing 1.0% Whole Foods Market * 83,000 3,945 3,945 Personal Products 0.5% Estee Lauder, Class A 50,000 1,676 1,676 Total Consumer Staples 7,270 ENERGY 6.9% Energy Equipment & Services 4.7% BJ Services * 135,000 5,044 Cooper Cameron * 50,000 2,519 Diamond Offshore Drilling 160,000 3,358 FMC Technologies * 143,000 3,010 Smith International * 114,700 4,214 18,145 Oil & Gas 2.2% Devon Energy 73,106 3,904 Murphy Oil 35,000 1,841 XTO Energy 125,000 2,514 8,259 Total Energy 26,404 FINANCIALS 7.5% Capital Markets 4.0% Charles Schwab 150,000 1,514 Eaton Vance 70,000 2,212 Franklin Resources 50,000 1,953 Investor's Financial Services 51,000 1,480 Legg Mason 37,400 2,429 Waddell & Reed Financial Class A 214,000 5,493 15,081 Commercial Banks 0.2% Silicon Valley Bancshares * 27,000 643 643 Diversified Financial Services 0.6% Principal Financial Group 75,000 2,419 2,419 Insurance 2.2% AMBAC 18,000 1,193 Nationwide Financial Services Class A 80,000 2,600 Protective Life 80,000 2,140 Willis Group Holdings 79,000 2,429 8,362 Thrifts & Mortgage Finance 0.5% Radian Group 56,000 $ 2,052 2,052 Total Financials 28,557 HEALTH CARE 20.5% Biotechnology 5.5% Affymetrix * 44,000 867 Alkermes * 88,000 946 Amylin Pharmaceuticals * 68,000 1,489 Cephalon * 64,600 2,659 Gilead Sciences * 84,000 4,669 Human Genome Sciences * 96,000 1,221 IDEC Pharmaceuticals * 50,000 1,700 MedImmune * 87,000 3,164 Millennium Pharmaceuticals * 106,000 1,667 Neurocrine Biosciences * 25,000 1,248 Protein Design Labs * 55,000 769 Vertex Pharmaceuticals * 50,000 730 21,129 Health Care Equipment & Supplies 1.9% Apogent Technologies * 102,000 2,040 Cytyc * 49,000 515 Invitrogen * 20,000 767 St. Jude Medical * 35,000 2,013 Waters Corporation * 63,700 1,856 7,191 Health Care Providers & Services 9.3% AmerisourceBergen 48,000 3,329 Anthem * 70,000 5,400 Davita * 97,000 2,598 Health Management, Class A 176,000 3,247 Laboratory Corporation of America * 124,000 3,739 Manor Care * 142,900 3,574 Omnicare 247,800 8,373 Triad Hospitals * 63,000 1,564 WellChoice * 47,000 1,376 Wellpoint Health Networks * 30,000 2,529 35,729 Pharmaceuticals 3.8% Andrx * 159,000 3,164 Barr Laboratories * 67,500 4,421 IVAX * 114,000 2,035 Teva Pharmaceutical ADR 86,700 4,936 14,556 Total Health Care 78,605 INDUSTRIALS & BUSINESS SERVICES 15.2% Aerospace & Defense 3.0% Alliant Techsystems * 78,800 $ 4,091 L-3 Communications Holdings * 45,000 1,957 Rockwell Collins 213,200 5,251 11,299 Air Freight & Logistics 0.7% Expeditors International of Washington 79,000 2,736 2,736 Airlines 0.1% JetBlue Airways * 13,000 550 550 Building Products 0.9% American Standard * 45,000 3,327 3,327 Commercial Services & Supplies 6.4% Apollo Group, Class A * 31,000 1,915 ChoicePoint * 160,900 5,554 Education Management * 46,300 2,462 Hewitt Associates, Class A * 101,000 2,378 Manpower 114,900 4,262 Robert Half International * 202,000 3,826 Viad 183,700 4,113 24,510 Industrial Conglomerates 1.0% Roper Industries 101,000 3,757 3,757 Machinery 2.9% Danaher 60,000 4,083 ITT Industries 70,000 4,582 Oshkosh Truck, Class B 40,000 2,373 11,038 Trading Companies & Distributors 0.2% Fastenal 17,000 577 MSC Industrial Direct, Class A * 10,000 179 756 Total Industrials & Business Services 57,973 INFORMATION TECHNOLOGY 23.4% Communications Equipment 1.0% Harris 126,000 $ 3,786 3,786 Computer & Peripherals 1.7% Diebold 60,500 2,616 Lexmark International, Class A * 18,000 1,274 Seagate Technology 149,000 2,630 6,520 Electronic Equipment & Instruments 2.2% CDW * 69,200 3,169 Celestica * 126,000 1,986 Jabil Circuit * 90,000 1,989 Molex, Class A 51,000 1,182 8,326 Internet Software & Services 3.0% Expedia, Class A * 25,000 1,909 InterActiveCorp * 80,000 3,166 Monster Worldwide * 126,000 2,486 VeriSign * 284,500 3,935 11,496 IT Services 7.8% Affiliated Computer Services Class A * 75,000 3,430 BearingPoint * 297,000 2,866 BISYS Group * 129,000 2,370 Ceridian * 205,000 3,479 Certegy * 143,900 3,993 DST Systems * 115,000 4,370 Fiserv * 85,000 3,027 Iron Mountain * 111,000 4,117 SunGard Data Systems * 87,000 2,254 29,906 Semiconductor & Semiconductor Equipment 4.0% Intersil Holding, Class A * 106,000 2,821 KLA-Tencor * 45,300 2,106 Maxim Integrated Products 40,000 1,368 Microchip Technology 153,400 3,778 Novellus Systems * 60,000 2,197 QLogic * 28,000 1,353 Semtech * 111,000 1,581 15,204 Software 3.7% Adobe Systems 90,900 $ 2,915 Informatica * 68,500 473 Intuit * 50,000 2,226 Mercury Interactive * 50,000 1,931 Network Associates * 117,200 1,486 PeopleSoft * 112,000 1,970 Siebel Systems * 64,000 611 Synopsys * 21,000 1,299 VERITAS Software * 51,000 1,462 14,373 Total Information Technology 89,611 MATERIALS 1.9% Chemicals 1.0% Potash Corp./Saskatchewan 63,100 4,038 4,038 Metals & Mining 0.9% Newmont Mining 101,000 3,279 3,279 Total Materials 7,317 TELECOMMUNICATION SERVICES 1.8% Wireless Telecommunication Services 1.8% Nextel Communications Class A * 235,700 4,261 Triton PCS Holdings, Class A * 110,000 556 Western Wireless, Class A * 165,800 1,912 Total Telecommunication Services 6,729 Total Miscellaneous Common Stocks 0.1% 531 Total Common Stocks (Cost $299,922) 361,508 Short-Term Investments 6.9% Money Market Fund 6.9% T. Rowe Price Government Reserve Investment Fund, 1.01% # 26,205,938 26,206 Total Short-Term Investments (Cost $26,206) 26,206 Value - -------------------------------------------------------------------------------- In thousands Total Investments in Securities 101.4% of Net Assets (Cost $326,128) $ 387,714 Other Assets Less Liabilities (5,310) NET ASSETS $ 382,404 ---------- Net Assets Consist of: Undistributed net investment income (loss) $ (775) Undistributed net realized gain (loss) (53,144) Net unrealized gain (loss) 61,586 Paid-in-capital applicable to 22,508,130 shares of $0.0001 par value capital stock outstanding; 1,000,000,000 shares of the Corporation authorized 374,737 NET ASSETS $ 382,404 ---------- NET ASSET VALUE PER SHARE Mid-Cap Growth Portfolio shares ($371,556,194/21,868,181 shares outstanding) $ 16.99 ---------- Mid-Cap Growth Portfolio-II shares ($10,847,807/639,949 shares outstanding) $ 16.95 ---------- # Seven-day yield * Non-income producing ADR American Depository Receipts The accompanying notes are an integral part of these financial statements. Statement of Operations T. Rowe Price Mid-Cap Growth Portfolio Certified Financials (Unaudited) In thousands 6 Months Ended 6/30/03 Investment Income (Loss) Income Dividend $ 497 Income distributions from mutual funds 84 Total income 581 Expenses Investment management and administrative 1,348 Distribution - Mid-Cap Growth-II shares 8 Total Expenses 1,356 Net investment income (loss) (775) Realized and Unrealized Gain (Loss) Net realized gain (loss) on securities (897) Change in unrealized gain (loss) on securities 58,089 Net realized and unrealized gain (loss) 57,192 INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS $ 56,417 ---------- The accompanying notes are an integral part of these financial statements. Statement of Changes in Net Assets T. Rowe Price Mid-Cap Growth Portfolio Certified Financials (Unaudited) In thousands 6 Months Year Ended Ended 6/30/03 12/31/02 Increase (Decrease) in Net Assets Operations Net investment income (loss) $ (775) $ (1,562) Net realized gain (loss) (897) (22,725) Change in net unrealized gain (loss) 58,089 (56,143) Increase (decrease) in net assets from operations 56,417 (80,430) Capital share transactions * Shares sold Mid-Cap Growth shares 38,234 77,226 Mid-Cap Growth-II shares 6,472 5,274 Shares redeemed Mid-Cap Growth shares (20,030) (48,621) Mid-Cap Growth-II shares (965) (1,267) Increase (decrease) in net assets from capital share transactions 23,711 32,612 Net Assets Increase (decrease) during period 80,128 (47,818) Beginning of period 302,276 350,094 End of period $ 382,404 $ 302,276 --------------- --------------- *Share information Shares sold Mid-Cap Growth shares 2,519 4,696 Mid-Cap Growth-II shares 427 365 Shares redeemed Mid-Cap Growth shares (1,397) (3,123) Mid-Cap Growth-II shares (65) (87) Increase (decrease) in shares outstanding 1,484 1,851 The accompanying notes are an integral part of these financial statements. Notes to Financial Statements T. Rowe Price Mid-Cap Growth Portfolio Certified Financials June 30, 2003 (Unaudited) Note 1 - Significant Accounting Policies T. Rowe Price Equity Series, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act). The Mid-Cap Growth Portfolio (the fund) is a diversified, open-end management investment company and is one of the portfolios established by the corporation. The fund seeks to provide long-term capital appreciation by investing in mid-cap stocks with potential for above-average earnings growth. Shares of the fund are currently offered only through certain insurance companies as an investment medium for both variable annuity contracts and variable life insurance policies. The fund has two classes of shares: Mid-Cap Growth Portfolio (Mid-Cap Growth Class) offered since December 31, 1996, and Mid-Cap Growth Portfolio-II, offered since April 30, 2002. Mid-Cap Growth-II sells its shares only through financial intermediaries, which it compensates for distribution and certain administrative services under a Board-approved Rule 12b-1 plan. Each class has exclusive voting rights on matters related solely to that class, separate voting rights on matters that relate to both classes, and, in all other respects, the same rights and obligations as the other class. The accompanying financial statements were prepared in accordance with accounting principles generally accepted in the United States of America, which require the use of estimates made by fund management. Valuation Investments are valued at the close of the New York Stock Exchange (NYSE), normally 4 p.m. ET, each day that the NYSE is open for business. Equity securities listed or regularly traded on a securities exchange or in the over-the-counter market are valued at the last quoted sale price, or official closing price for certain markets, at the time the valuations are made. A security that is listed or traded on more than one exchange is valued at the quotation on the exchange determined to be the primary market for such security. Listed securities not traded on a particular day are valued at the mean of the latest bid and ask prices for domestic securities and the last quoted sale price for international securities. Investments in mutual funds are valued at the closing net asset value per share of the mutual fund on the day of valuation. Other investments and those for which the above valuation procedures are inappropriate or are deemed not to reflect fair value are stated at fair value as determined in good faith by or under the supervision of the officers of the fund, as authorized by the Board of Directors. Class Accounting Mid-Cap Growth-II pays distribution and administrative expenses in the form of Rule 12b-1 fees, in an amount not exceeding 0.25% of the class's average net assets. Management and administrative fee expense, investment income, and realized and unrealized gains and losses are allocated to the classes based upon the relative daily net assets of each class. Income distributions are declared and paid by each class on an annual basis. Capital gain distributions, if any, are declared and paid by the fund, typically on an annual basis. Other Income and expenses are recorded on the accrual basis. Investment transactions are accounted for on the trade date. Realized gains and losses are reported on the identified cost basis. Dividend income and distributions to shareholders are recorded by the fund on the ex-dividend date. Note 2 - Investment Transactions Purchases and sales of portfolio securities, other than short-term securities, aggregated $71,433,000 and $56,059,000, respectively, for the six months ended June 30, 2003. Note 3 - Federal Income Taxes No provision for federal income taxes is required since the fund intends to continue to qualify as a regulated investment company and distribute to shareholders all of its taxable income and gains. Federal income tax regulations differ from generally accepted accounting principles; therefore, distributions determined in accordance with tax regulations may differ in amount or character from net investment income and realized gains for financial reporting purposes. Financial reporting records are adjusted for permanent book/tax differences to reflect tax character. Temporary differences are not adjusted. The amount and character of tax-basis distributions and composition of net assets are finalized at fiscal year-end; accordingly, tax-basis balances have not been determined as of June 30, 2003. For tax purposes, the fund has elected to treat net capital losses realized between November 1 and December 31 of each year as occurring on the first day of the following tax year; consequently, $4,830,000 of realized losses recognized for financial reporting purposes in the year ended December 31, 2002 were recognized for tax purposes on January 1, 2003. Further, the fund intends to retain realized gains to the extent of available capital loss carryforwards. As of December 31, 2002, the fund had $47,417,000 of unused capital loss carryforwards, of which $23,036,000 expire in 2009 and $24,381,000 expire in 2010. At June 30, 2003, the cost of investments for federal income tax purposes was $326,128,000. Net unrealized gain aggregated $61,586,000 at period-end, of which $81,716,000 related to appreciated investments and $20,130,000 related to depreciated investments. Note 4 - Related Party Transactions The fund is managed by T. Rowe Price Associates, Inc. (the manager or Price Associates), a wholly owned subsidiary of T. Rowe Price Group, Inc. The investment management and administrative agreement between the fund and the manager provides for an all-inclusive annual fee equal to 0.85% of the fund's average daily net assets. The fee is computed daily and paid monthly. The agreement provides that investment management, shareholder servicing, transfer agency, accounting, and custody services are provided to the fund, and interest, taxes, brokerage commissions, directors' fees and expenses, and extraordinary expenses are paid directly by the fund. At June 30, 2003, $294,000 was payable under the agreement. The fund may invest in the T. Rowe Price Reserve Investment Fund and T. Rowe Price Government Reserve Investment Fund (collectively, the Reserve Funds), open-end management investment companies managed by Price Associates. The Reserve Funds are offered as cash management options only to mutual funds, trusts, and other accounts managed by Price Associates and/or its affiliates, and are not available to the public. The Reserve Funds pay no investment management fees. Distributions from the Reserve Funds to the fund for the six months ended June 30, 2003 totaled $84,000. Item 2. Code of Ethics. Not required at this time. Item 3. Audit Committee Financial Expert. Not required at this time. Item 4. Principal Accountant Fees and Services. Not required at this time. Item 5. Audit Committee of Listed Registrants. Not required at this time. Item 6. [Reserved] Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies. Not applicable. Item 8. [Reserved] Item 9. Controls and Procedures (a) The registrant's principal executive officer and principal financial officer have evaluated the registrant's disclosure controls and procedures within 90 days of this filing and have concluded that the registrant's disclosure controls and procedures were effective, as of that date, in ensuring that information required to be disclosed by the registrant in this Form N-CSR was recorded, processed, summarized, and reported timely. (b) The registrant's principal executive officer and principal financial officer are aware of no changes in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal half-year that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. Item 10. Exhibits. (a)(1) Not required at this time. (a)(2) Separate certifications by the registrant's principal executive officer and principal financial officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 and required by Rule 30a-2(a) under the Investment Company Act of 1940, are attached. (b) A certification by the registrant's principal executive officer and principal financial officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and required by Rule 30a-2(b) under the Investment Company Act of 1940, is attached. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. T. Rowe Price Equity Series, Inc. By /s/ James S. Riepe James S. Riepe Principal Executive Officer Date August 22, 2003 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By /s/ James S. Riepe James S. Riepe Principal Executive Officer Date August 22, 2003 By /s/ Joseph A. Carrier Joseph A. Carrier Principal Financial Officer Date August 22, 2003