Item 1. Report to Shareholders T. Rowe Price Science & Technology Fund - -------------------------------------------------------------------------------- June 30, 2004 Certified Semiannual Report This report is certified under the Sarbanes-Oxley Act of 2002, which requires that public companies, including mutual funds, affirm that the information provided in their annual and semiannual shareholder reports fully and fairly represents their financial position. T. Rowe Price Science & Technology Fund - -------------------------------------------------------------------------------- Certified Semiannual Report (Unaudited) FINANCIAL HIGHLIGHTS For a share outstanding throughout each period - -------------------------------------------------------------------------------- Investor Class 6 Months Year Ended Ended 6/30/04 12/31/03 12/31/02 12/31/01 12/31/00 12/31/99 NET ASSET VALUE Beginning of period $ 18.80 $ 12.43 $ 20.92 $ 35.57 $ 63.71 $ 37.67 Investment activities Net investment income (loss) (0.07) (0.11) (0.14) (0.18) (0.29) (0.09) Net realized and unrealized gain (loss) 0.07 6.48 (8.35) (14.47) (20.57) 36.85 Total from investment activities 0.00 6.37 (8.49) (14.65) (20.86) 36.76 Distributions Net realized gain -- -- -- -- (7.28) (10.72) NET ASSET VALUE End of period $ 18.80 $ 18.80 $ 12.43 $ 20.92 $ 35.57 $ 63.71 --------------------------------------------------------------- Ratios/ Supplemental Data Total return^ 0.00% 51.25% (40.58)% (41.19)% (34.19)% 100.99% Ratio of total expenses to average net assets 1.02%+ 1.09% 1.11% 1.00% 0.86% 0.87% Ratio of net investment income (loss) to average net assets (0.73)%+ (0.73)% (0.87)% (0.73)% (0.55)% (0.26)% Portfolio turnover rate 58.8%+ 47.8% 60.8% 143.6% 134.1% 128.0% Net assets, end of period (in millions) $ 4,139 $ 4,380 $ 2,839 $ 5,209 $ 8,892 $ 12,271 ^ 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. T. Rowe Price Science & Technology Fund - -------------------------------------------------------------------------------- Certified Semiannual Report (Unaudited) FINANCIAL HIGHLIGHTS For a share outstanding throughout each period - -------------------------------------------------------------------------------- Advisor Class 6 Months Year 3/31/00 Ended Ended Through 6/30/04 12/31/03 12/31/02 12/31/01 12/31/00 NET ASSET VALUE Beginning of period $ 18.80 $ 12.42 $ 20.90 $ 35.54 $ 71.08 Investment activities Net investment income (loss) (0.07) (0.13) (0.12) (0.17) (0.13) Net realized and unrealized gain (loss) 0.08 6.51 (8.36) (14.47) (28.13) Total from investment activities 0.01 6.38 (8.48) (14.64) (28.26) Distributions Net realized gain - - - - (7.28) NET ASSET VALUE End of period $ 18.81 $ 18.80 $ 12.42 $ 20.90 $ 35.54 --------------------------------------------------------- Ratios/ Supplemental Data Total return^ 0.05% 51.37% (40.57)% (41.19)% (41.06)% Ratio of total expenses to average net assets 1.04%+ 1.05% 1.08% 0.99% 1.09%+ Ratio of net investment income (loss) to average net assets (0.75)%+ (0.69)% (0.83)% (0.71)% 0.80%+ Portfolio turnover rate 58.8%+ 47.8% 60.8% 143.6% 134.1%+ Net assets, end of period (in thousands) $ 632,067 $ 656,154 $ 346,768 $ 554,665 $ 829,024 ^ 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. T. Rowe Price Science & Technology Fund - -------------------------------------------------------------------------------- Certified Semiannual Report (Unaudited) June 30, 2004 PORTFOLIO OF INVESTMENTS (1) Shares Value - -------------------------------------------------------------------------------- (Cost and value in $ 000s) COMMON STOCKS AND WARRANTS 99.2% HARDWARE 9.8% Enterprise Hardware 8.3% Dell * 5,150,000 184,473 EMC * 3,800,000 43,320 Hewlett-Packard 2,500,000 52,750 Lexmark International, Class A * 400,000 38,612 QLogic * 2,800,000 74,452 393,607 Supply Chain & Electronic Manufacturing 1.5% CDW 300,000 19,128 Flextronics * 2,500,000 39,875 Sanmina-SCI * 1,500,000 13,650 72,653 Total Hardware 466,260 HEALTH CARE 2.7% Biotechnology 1.1% Biogen Idec * 200,000 12,650 Cephalon * 400,000 21,600 MedImmune * 800,000 18,720 52,970 Medical Devices 0.1% Johnson & Johnson 100,000 5,570 5,570 Pharmaceuticals 1.5% Forest Laboratories * 850,000 48,136 Merck 250,000 11,875 Pfizer 350,000 11,998 72,009 Total Health Care 130,549 IT SERVICES 8.0% IT Services 3.2% Accenture, Class A * 2,000,000 54,960 IBM 1,100,000 96,965 151,925 Processors 4.8% Certegy 700,000 27,160 DST Systems * 100,000 4,809 First Data 1,000,000 44,520 Fiserv * 2,400,000 93,336 Paychex 1,000,000 33,880 SunGard Data Systems * 1,000,000 26,000 229,705 Total IT Services 381,630 MEDIA 9.8% Cable & Satellites 1.5% Comcast, Class A * 1,000,000 27,610 EchoStar Communications, Class A * 1,350,000 41,513 69,123 Gaming 1.2% International Game Technology 1,500,000 57,900 57,900 Internet 4.3% eBay * 400,000 36,780 InterActiveCorp * 2,300,000 69,322 Yahoo! * 2,750,000 99,907 206,009 Media & Entertainment 2.2% Time Warner * 2,500,000 43,950 Viacom, Class B 1,750,000 62,510 106,460 Radio/ Outdoor Advertising 0.6% Clear Channel Communications 800,000 29,560 29,560 Total Media 469,052 SEMICONDUCTORS 20.8% Analog Semiconductors 6.5% Analog Devices 2,750,000 129,470 Intersil Holding, Class A 1,500,000 32,490 Linear Technology 800,000 31,576 Maxim Integrated Products 1,600,000 83,872 STMicroelectronics ADR 1,500,000 33,015 310,423 Digital Semiconductors 8.9% Agere Systems, Class A * 7,000,000 16,100 Altera * 1,000,000 22,220 Intel 4,000,000 110,400 Marvell Technology Group * 400,000 10,680 Microchip Technology 1,900,000 59,926 Samsung Electronics (KRW) 150,000 61,921 Taiwan Semiconductor Manufacturing, Warrants, 8/16/05 * 25,000,000 34,255 Texas Instruments 1,750,000 42,315 Xilinx 2,000,000 66,620 424,437 Semiconductor Capital Equipment 5.4% Applied Materials * 5,000,000 98,100 ASML Holding * 1,000,000 17,110 Cabot Microelectronics * 400,000 12,244 KLA-Tencor * 1,200,000 59,256 Novellus Systems * 2,300,000 72,312 259,022 Total Semiconductors 993,882 SOFTWARE 33.3% Application Software 5.3% Adobe Systems 1,150,000 53,475 Informatica * 2,200,000 16,786 SAP (EUR) 350,000 58,092 SAP ADR 1,800,000 75,258 Siebel Systems * 4,800,000 51,264 254,875 Consumer Software 2.3% Electronic Arts * 200,000 10,910 Intuit * 2,500,000 96,450 107,360 Infrastructure Software 12.8% Microsoft 14,250,000 406,980 Oracle * 10,500,000 125,265 Red Hat * 3,520,000 80,854 613,099 Systems Software 10.2% Mercury Interactive * 2,650,000 132,050 Network Associates * 3,500,000 63,455 Symantec * 1,100,000 48,158 VeriSign * 3,000,000 59,700 VERITAS Software * 6,600,000 182,820 486,183 Technical Software 2.7% Cadence Design Systems * 5,800,000 84,854 Synopsys * 1,500,000 42,645 127,499 Total Software 1,589,016 TELECOM EQUIPMENT 10.3% Wireless Equipment 2.1% Nokia ADR 2,250,000 32,715 QUALCOMM 900,000 65,682 98,397 Wireline Equipment 8.2% Cisco Systems * 12,000,000 284,400 Juniper Networks * 2,750,000 67,567 Nortel Networks * 7,750,000 38,673 390,640 Total Telecom Equipment 489,037 TELECOM SERVICES 0.4% Wireless-International 0.4% Vodafone ADR 750,000 16,575 Total Telecom Services 16,575 Total Miscellaneous Common Stock 4.1% 195,771 Total Common Stocks and Warrants (Cost $4,755,014) 4,731,772 SHORT-TERM INVESTMENTS 0.8% Money Market Fund 0.8% T. Rowe Price Government Reserve Investment Fund, 1.04% # 39,426,025 39,426 Total Short-Term Investments (Cost $39,426) 39,426 Total Investments in Securities 100.0% of Net Assets (Cost $4,794,440) $ 4,771,198 ------------- (1) Denominated in U.S. dollar unless otherwise noted # Seven-day yield * Non-income producing ADR American Depository Receipts EUR Euro KRW South Korean won The accompanying notes are an integral part of these financial statements. T. Rowe Price Science & Technology Fund - -------------------------------------------------------------------------------- Certified Semiannual Report (Unaudited) June 30, 2004 STATEMENT OF ASSETS AND LIABILITIES - -------------------------------------------------------------------------------- (In thousands except shares and per share amounts) Assets Investments in securities, at value (cost $4,794,440) $ 4,771,198 Other assets 47,638 Total assets 4,818,836 Liabilities Total liabilities 47,521 NET ASSETS $ 4,771,315 ------------- Net Assets Consist of: Undistributed net investment income (loss) $ (17,827) Undistributed net realized gain (loss) (5,915,377) Net unrealized gain (loss) (23,241) Paid-in-capital applicable to 253,735,507 shares of $0.01 par value capital stock outstanding; 1,000,000,000 shares authorized 10,727,760 NET ASSETS $ 4,771,315 ------------- NET ASSET VALUE PER SHARE Investor Class ($4,139,247,845/220,128,609 shares outstanding) $ 18.80 ------------- Advisor Class ($632,067,165/33,606,898 shares outstanding) $ 18.81 ------------- The accompanying notes are an integral part of these financial statements. T. Rowe Price Science & Technology Fund - -------------------------------------------------------------------------------- Certified Semiannual Report (Unaudited) STATEMENT OF OPERATIONS - -------------------------------------------------------------------------------- ($ 000s) 6 Months Ended 6/30/04 Investment Income (Loss) Income Dividend $ 6,842 Securities lending 87 Total income 6,929 Expenses Investment management 16,153 Shareholder servicing Investor Class 6,952 Advisor Class 333 Rule 12b-1 fees-Advisor Class 798 Legal and audit 162 Prospectus and shareholder reports Investor Class 155 Advisor Class 1 Custody and accounting 150 Registration 40 Directors 8 Miscellaneous 4 Total expenses 24,756 Net investment income (loss) (17,827) Realized and Unrealized Gain (Loss) Net realized gain (loss) Securities 352,647 Foreign currency transactions (45) Net realized gain (loss) 352,602 Change in net unrealized gain (loss) Securities (340,615) Other assets and liabilities denominated in foreign currencies 1 Change in net unrealized gain (loss) (340,614) Net realized and unrealized gain (loss) 11,988 INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS $ (5,839) -------------------- The accompanying notes are an integral part of these financial statements. T. Rowe Price Science & Technology Fund - -------------------------------------------------------------------------------- Certified Semiannual Report (Unaudited) STATEMENT OF CHANGES IN NET ASSETS - -------------------------------------------------------------------------------- ($ 000s) 6 Months Year Ended Ended 6/30/04 12/31/03 Increase (Decrease) in Net Assets Operations Net investment income (loss) $ (17,827) $ (29,507) Net realized gain (loss) 352,602 (42,740) Change in net unrealized gain (loss) (340,614) 1,760,368 Increase (decrease) in net assets from operations (5,839) 1,688,121 Capital share transactions * Shares sold Investor Class 354,867 1,012,841 Advisor Class 20,735 146,751 Shares redeemed Investor Class (590,196) (952,995) Advisor Class (44,235) (44,822) Increase (decrease) in net assets from capital share transactions (258,829) 161,775 Net Assets Increase (decrease) during period (264,668) 1,849,896 Beginning of period 5,035,983 3,186,087 End of period $ 4,771,315 $ 5,035,983 ------------------------------------ (Including undistributed net investment income (loss) of $(17,827) at 6/30/04 and $0 at 12/31/03) *Share information Shares sold Investor Class 18,916 66,882 Advisor Class 1,097 9,847 Shares redeemed Investor Class (31,795) (62,360) Advisor Class (2,387) (2,862) Increase (decrease) in shares outstanding (14,169) 11,507 The accompanying notes are an integral part of these financial statements. T. Rowe Price Science & Technology Fund - -------------------------------------------------------------------------------- Certified Semiannual Report (Unaudited) June 30, 2004 NOTES TO FINANCIAL STATEMENTS - -------------------------------------------------------------------------------- NOTE 1 - SIGNIFICANT ACCOUNTING POLICIES T. Rowe Price Science & Technology Fund, Inc. (the fund) is registered under the Investment Company Act of 1940 (the 1940 Act) as a diversified, open-end management investment company. The fund seeks to provide long-term capital appreciation. The fund has two classes of shares: the T. Rowe Price Science & Technology Fund original share class, referred to in this report as the Investor Class, offered since September 30, 1987, and T. Rowe Price Science & Technology Fund--Advisor Class (Advisor Class), offered since March 31, 2000. Advisor Class shares are sold only through brokers and other financial intermediaries that are compensated by the class for distribution, shareholder servicing, and/or 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 The fund values its investments and computes its net asset value per share 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, for certain markets, the official closing price at the time the valuations are made, except for OTC Bulletin Board securities, which are valued at the mean of the latest bid and asked prices. 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 asked prices for domestic securities and the last quoted sale price for international securities. Investments in mutual funds are valued at the mutual fund's closing net asset value per share 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 the T. Rowe Price Valuation Committee, established by the fund's Board of Directors. Most foreign markets close before the close of trading on the NYSE. If the fund determines that developments between the close of a foreign market and the close of the NYSE will, in its judgment, materially affect the value of some or all of its portfolio securities, which in turn will affect the fund's share price, the fund will adjust the previous closing prices to reflect the fair value of the securities as of the close of the NYSE, as determined in good faith by the T. Rowe Price Valuation Committee, established by the fund's Board of Directors. A fund may also fair value securities in other situations, such as when a particular foreign market is closed but the fund is open. In deciding whether to make fair value adjustments, the fund reviews a variety of factors, including developments in foreign markets, the performance of U.S. securities markets, and the performance of instruments trading in U.S. markets that represent foreign securities and baskets of foreign securities. The fund uses outside pricing services to provide it with closing market prices and information used for adjusting those prices. The fund cannot predict how often it will use closing prices and how often it will adjust those prices. As a means of evaluating its fair value process, the fund routinely compares closing market prices, the next day's opening prices in the same markets, and adjusted prices. Currency Translation Assets, including investments, and liabilities denominated in foreign currencies are translated into U.S. dollar values each day at the prevailing exchange rate, using the mean of the bid and asked prices of such currencies against U.S. dollars as quoted by a major bank. Purchases and sales of securities, income, and expenses are translated into U.S. dollars at the prevailing exchange rate on the date of the transaction. The effect of changes in foreign currency exchange rates on realized and unrealized security gains and losses is reflected as a component of security gains and losses. Class Accounting The Advisor Class pays distribution, shareholder servicing, and/or certain administrative expenses in the form of Rule 12b-1 fees, in an amount not exceeding 0.25% of the class's average daily net assets. Shareholder servicing, prospectus, and shareholder report expenses incurred by each class are charged directly to the class to which they relate. Expenses common to both classes, investment income, and realized and unrealized gains and losses are allocated to the classes based upon the relative daily net assets of each class. Rebates and Credits Subject to best execution, the fund may direct certain security trades to brokers who have agreed to rebate a portion of the related brokerage commission to the fund in cash. Commission rebates are included in realized gain on securities in the accompanying financial statements and totaled $218,000 for the six months ended June 30, 2004. Additionally, the fund earns credits on temporarily uninvested cash balances at the custodian that reduce the fund's custody charges. Custody expense in the accompanying financial statements is presented before reduction for credits. Investment Transactions, Investment Income, and Distributions Income and expenses are recorded on the accrual basis. Dividends received from mutual fund investments are reflected as dividend income; capital gain distributions are reflected as realized gain/loss. Dividend income and capital gain distributions are recorded on the ex-dividend date. Investment transactions are accounted for on the trade date. Realized gains and losses are reported on the identified cost basis. Distributions to shareholders are recorded on the ex-dividend date. 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 In the normal course of business, the fund enters into contracts that provide general indemnifications. The fund's maximum exposure under these arrangements is dependent on claims that may be made against the fund in the future and, therefore, cannot be estimated; however, based on experience, the risk of material loss from such claims is considered remote. NOTE 2 - INVESTMENT TRANSACTIONS Consistent with its investment objective, the fund engages in the following practices to manage exposure to certain risks or enhance performance. The investment objective, policies, program, and risk factors of the fund are described more fully in the fund's prospectus and Statement of Additional Information. Securities Lending The fund lends its securities to approved brokers to earn additional income. It receives as collateral cash and U.S. government securities valued at 102% to 105% of the value of the securities on loan. Cash collateral is invested in a money market pooled trust managed by the fund's lending agent in accordance with investment guidelines approved by fund management. Collateral is maintained over the life of the loan in an amount not less than the value of loaned securities, as determined at the close of fund business each day; any additional collateral required due to changes in security values is delivered to the fund the next business day. Although risk is mitigated by the collateral, the fund could experience a delay in recovering its securities and a possible loss of income or value if the borrower fails to return the securities. Securities lending revenue recognized by the fund consists of earnings on invested collateral and borrowing fees, net of any rebates to the borrower and compensation to the lending agent. At June 30, 2004, there were no securities on loan. Other Purchases and sales of portfolio securities, other than short-term securities, aggregated $1,408,027,000 and $1,654,437,000, respectively, for the six months ended June 30, 2004. 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 under Subchapter M of the Internal Revenue Code 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. Financial records are not adjusted for temporary differences. 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, 2004. The fund intends to retain realized gains to the extent of available capital loss carryforwards. As of December 31, 2003, the fund had $6,267,968,000 of unused capital loss carryforwards, of which $4,234,327,000 expire in 2009, $1,904,219,000 expire in 2010, and $129,422,000 expire in 2011. At June 30, 2004, the cost of investments for federal income tax purposes was $4,794,440,000. Net unrealized loss aggregated $23,241,000 at period-end, of which $527,964,000 related to appreciated investments and $551,205,000 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 agreement between the fund and the manager provides for an annual investment management fee, which is computed daily and paid monthly. The fee consists of an individual fund fee, equal to 0.35% of the fund's average daily net assets, and the fund's pro-rata share of a group fee. The group fee is calculated based on the combined net assets of certain mutual funds sponsored by Price Associates (the group) applied to a graduated fee schedule, with rates ranging from 0.48% for the first $1 billion of assets to 0.295% for assets in excess of $120 billion. The fund's portion of the group fee is determined by the ratio of its average daily net assets to those of the group. At June 30, 2004, the effective annual group fee rate was 0.31%, and investment management fee payable totaled $2,566,000. The Advisor Class is also subject to a contractual expense limitation through April 30, 2006. During the limitation period, the manager is required to waive its management fee and reimburse the class for any expenses, excluding interest, taxes, brokerage commissions, and extraordinary expenses, that would otherwise cause the class's ratio of total expenses to average net assets (expense ratio) to exceed its expense limitation of 1.15%. Through April 30, 2008, the class is required to repay the manager for expenses previously reimbursed and management fees waived to the extent its net assets have grown or expenses have declined sufficiently to allow repayment without causing the class's expense ratio to exceed its expense limitation. For the six months ended June 30, 2004, the Advisor Class operated below its expense limitation. In addition, the fund has entered into service agreements with Price Associates and two wholly owned subsidiaries of Price Associates (collectively, Price). Price Associates computes the daily share prices and maintains the financial records of the fund. T. Rowe Price Services, Inc., provides shareholder and administrative services in its capacity as the fund's transfer and dividend disbursing agent. T. Rowe Price Retirement Plan Services, Inc., provides subaccounting and recordkeeping services for certain retirement accounts invested in the Investor Class. Expenses incurred pursuant to these service agreements totaled $5,244,000 for the six months ended June 30, 2004, of which $1,124,000 was payable at period-end. Additionally, the fund is one of several mutual funds in which certain college savings plans managed by Price Associates may invest. As approved by the fund's Board of Directors, shareholder servicing costs associated with each college savings plan are borne by the fund in proportion to the average daily value of its shares owned by the college savings plan. For the six months ended June 30, 2004, the fund was charged $16,000 for shareholder servicing costs related to the college savings plans, of which $12,000 was for services provided by Price and $1,000 was payable at period-end. At June 30, 2004, approximately 0.2% of the outstanding shares of the Investor Class were held by college savings plans. The fund may invest in the T. Rowe Price Reserve Investment Fund and the 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 to mutual funds, trusts, and other accounts managed by Price Associates and/or its affiliates, and are not available for direct purchase by members of the public. The Reserve Funds pay no investment management fees. During the six months ended June 30, 2004, dividend income from the Reserve Funds totaled $330,000. T. Rowe Price Science & Technology Fund - -------------------------------------------------------------------------------- Certified Semiannual Report INFORMATION ON PROXY VOTING - -------------------------------------------------------------------------------- A description of the policies and procedures that the T. Rowe Price Science & Technology Fund uses to determine how to vote proxies relating to portfolio securities is available, without charge, upon request by calling 1-800-225-5132. It also appears in the fund's Statement of Additional Information (Form 485B), which can be found on the SEC's Web site, www.sec.gov. Item 2. Code of Ethics. A code of ethics, as defined in Item 2 of Form N-CSR, applicable to its principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions is filed as an exhibit to the registrant's annual Form N-CSR. No substantive amendments were approved or waivers were granted to this code of ethics during the registrant's most recent fiscal half-year. Item 3. Audit Committee Financial Expert. Disclosure required in registrant's annual Form N-CSR. Item 4. Principal Accountant Fees and Services. Disclosure required in registrant's annual Form N-CSR. Item 5. Audit Committee of Listed Registrants. Not applicable. Item 6. Schedule of Investments. Not applicable. The complete schedule of investments is included in Item 1 of this Form N-CSR. Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies. Not applicable. Item 8. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers. Not applicable. Item 9. Submission of Matters to a Vote of Security Holders. Not applicable. Item 10. 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 11. Exhibits. (a)(1) The registrant's code of ethics pursuant to Item 2 of Form N-CSR is filed with the registrant's annual Form N-CSR. (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. (3) Written solicitation to repurchase securities issued by closed-end companies: not applicable. (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 Science & Technology Fund, Inc. By: /s/ James S. Riepe James S. Riepe Principal Executive Officer Date: August 16, 2004 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 16, 2004 By: /s/ Joseph A. Carrier Joseph A. Carrier Principal Financial Officer Date: August 16, 2004