EXHIBIT 99.1 SUPERTEX, INC. PRESS RELEASE FOR IMMEDIATE RELEASE Contact: Dr. Henry C. Pao April 28, 2003 President & CEO Tel: 408-222-4866 Fax: 408-222-4800 Email: investors@supertex.com SUPERTEX REPORTS FOURTH FISCAL QUARTER AND FISCAL YEAR-END RESULTS Sunnyvale, CA (April 28, 2003) - Supertex, Inc. (NASDAQ: SUPX) reported that for the fourth fiscal quarter ended March 31, 2003, net sales increased 13% to $14,531,000 from $12,809,000 for the same quarter in the prior fiscal year and increased 5% sequentially from $13,888,000 for the prior quarter of fiscal 2003. Net income for the quarter increased 300% to $1,099,000 or $0.09 per share on a diluted basis from $275,000 or $0.02 per share for the same quarter of the prior fiscal year and improved 58% sequentially to $697,000 or $0.05 per share for the prior quarter fiscal 2003. For the fiscal year ended March 31, 2003, net sales decreased 2% to $54,915,000 from $56,195,000 in the prior year, while net income decreased 26% to $2,855,000 from $3,862,000 in the prior year. Dr. Henry C. Pao, President & CEO, commented, "Our sequential growth of 5% in net sales in the fourth fiscal quarter was fueled by strong turns business. We were able to achieve a 13% improvement in net sales during the fourth quarter year over year as over the last five quarters there has been a trend toward recovery in our net sales. Gross margin for the quarter improved to 42% from 38% in the prior quarter and 37% in the prior year's fourth quarter due to further improvements in manufacturing efficiencies and a more favorable product mix, particularly in digital imaging and certain analog chip-scale products, despite the continued low fab capacity utilization. Our cash and cash equivalents and short-term investments increased by $3.7 million during the quarter. Through careful management, we were able to reduce our inventory by about $1.9 million from the prior year-end. Our customers seem to place orders for the near-term only, perhaps due to the uncertain economic outlook. As we continue to depend on significant turns business, it is difficult to forecast our revenues for the first quarter with much precision; however, at this time we expect net sales for the June quarter to be similar to those for the March quarter. We expect increased sales into the portable medical ultrasound products to positively affect our September quarter, but our sales into the telecommunications market, in particular, the Optical-to-Optical and Hotswap products, remain slow and we do not foresee any increase until after this summer. We have stepped up our sales and marketing manpower to support our new products as compared to that of the prior year." Forward Looking Statements The industry in which we compete is characterized by extreme rapid changes in technology and frequent new product introductions. We believe that our long-term growth will depend largely on our ability to continue to enhance existing products and to introduce new products and features that meet the continually changing requirements of our customers. All statements contained in this press release that are not historical facts are forward-looking statements. They include our expectations as to our sales overall and in certain markets during the next two quarters and that here is a trend toward recovery. These forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. They are not guarantees of future performance or events but rather involve a number of risks and uncertainties including, but not limited to, whether customers implement our products in their new products, whether demand materializes for our customers' new products, whether we timely release into production our planned new products and the demand for such newly-released products as well as other risk factors detailed in our Form 8-K, 10-K, and 10-Q filings with the Securities and Exchange Commission. Due to these and other risks, our future actual results could differ materially from those discussed above. These forward-looking statements are based on our goals and objectives and our assumptions about, and assessment of, the future and may or may not prove true. They speak only as to the date of this release, and we undertake no obligation to publicly release updates or revisions to these statements. Conference Call Details We will host a conference call at 2:30 p.m. PDT (5:30 p.m. EDT) on April 28, 2003, following this earnings release. President and CEO, Dr. Henry C. Pao and Executive Vice President, Richard E. Siegel will present an overview of the fourth fiscal quarter and fiscal year-end financial results, discuss current business conditions and then respond to questions. The call is available live to listen or ask questions to any interested party by dialing 800-540-0559 (domestic) or 785-832-1077 (toll, international) at least 5 minutes before the scheduled start time, and ask to be connected to the Supertex Quarterly Earnings Release Call. A recorded replay will be available until 11:59 p.m., May 6, 2003 by dialing 800-839-3735 (domestic) or 402-220-2977 (toll, international). The conference call is also available live via the Internet by logging on to the following URL: http://www.firstcallevents.com/service/ajwz379143982gf12.html. If you are unable to participate during the live webcast, the call will be archived at www.supertex.com. About Supertex Supertex, Inc. is a publicly held mixed signal semiconductor manufacturer, focused in high voltage interface products for use in the telecommunications, networking systems, flat panel displays, medical and industrial electronics industries. Supertex product, corporate and financial information is readily available at www.supertex.com. For further information, contact Dr. Henry C. Pao at Supertex, Incorporated, 1235 Bordeaux Drive, Sunnyvale, California 94089, (408) 222-8888 or visit our Website at http://www.supertex.com SUPERTEX, INC. CONSOLIDATED INCOME STATEMENT INFORMATION (unaudited) Three-months Ended Fiscal Year Ended March 31, March 31, (in thousands, except per share amounts) 2003 2002 2003 2002 Net Sales $14,531 $12,809 $54,915 $56,195 Cost of Sales 8,494 8,049 34,103 33,700 ------ ------ ------ ------ Gross Profit 6,037 4,760 20,812 22,495 Research and development 2,366 2,722 9,338 11,279 Selling, general and administrative 2,316 2,415 8,722 7,939 ------ ------ ------ ------ Income from operations 1,355 (377) 2,752 3,277 Interest and other income, net 260 794 1,446 2,575 ------ ------ ------ ------ Income before income taxes 1,615 417 4,198 5,852 Provision for income taxes 516 142 1,343 1,990 ------ ------ ------ ------ Net Income $ 1,099 $ 275 $ 2,855 $ 3,862 ====== ====== ====== ====== Net income per share Basic $ 0.09 $ 0.02 $ 0.23 $ 0.31 ======= ======= ======= ======= Diluted $ 0.09 $ 0.02 $ 0.22 $ 0.30 ======= ======= ======= ======= Shares used in per share computation Basic 12,620 12,500 12,598 12,443 ====== ====== ====== ====== Diluted 12,770 12,958 12,757 12,748 ====== ====== ====== ====== SUPERTEX, INC. CONSOLIDATED BALANCE SHEET INFORMATION (unaudited) March 31, 2003 March 31, 2002 (in thousands) ASSETS Cash, cash equivalents and short-term investments $ 64,876 $ 52,492 Trade receivables, net 10,134 9,436 Inventories, net 14,582 16,494 Deferred income taxes 4,030 3,293 Other current assets 575 902 ------- ------- Total current assets 94,197 82,617 Property, plant and equipment 12,104 16,327 Long-term investments and long-term assets 97 1,451 Deferred income taxes, long-term 2,273 2,985 --------- --------- TOTAL ASSETS $ 108,671 $ 103,380 ========= ========= LIABILITIES Trade accounts payable and accrued liabilities $ 3,572 $ 5,769 Accrued salaries, wages and employee benefits 6,784 6,565 Other accrued liabilities 485 655 Deferred revenue 2,001 1,729 Income taxes payable 3,304 566 ------- ------- Total current liabilities 16,146 15,284 ------- ------- SHAREHOLDERS' EQUITY Common stock 29,045 27,454 Retained earnings 63,480 60,642 ------- ------- Total shareholders' equity 92,525 88,096 ------- ------- TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY $ 108,671 $ 103,380 ======= =======