CORPORATE INFORMATION Corporate Office: Registrar and Transfer Agent Form 10-K Stock Information Atrion Corporation One Allentown Parkway Allen, Texas 75002 (972) 390-9800 www.atrioncorp.com American Stock Transfer and Trust Company 59 Maiden Lane New York, New York 10007 A copy of the Company’s 2003 Annual Report on Form 10-K, as filed with the Securities and Exchange Commission, may be obtained by any stockholder without charge by written request to: Corporate Secretary Atrion Corporation One Allentown Parkway Allen, Texas 75002 The Company’s common stock is traded on The Nasdaq Stock Market (Symbol: ATRI). As of March 8, 2004, there were approximately 1,200 stockholders, including beneficial owners holding shares in nominee or “street” name. The table below  sets forth the high and low closing prices on The Nasdaq Stock Market and the quarterly dividends per share declared by the Company for each quarter of 2002 and 2003. The Company paid no cash dividends on its common stock during 2002. In the third quarter of 2003 the Company began paying quarterly cash dividends and presently plans to pay quarterly cash dividends in the future. 2002 Quarter Ended High Low Dividends March 31 $ 38.14 $ 26.91 $ — June 30 32.51 26.82 — September 30 28.09 18.31 — December 31 23.90 17.31 — 2003 Quarter Ended High Low Dividends March 31 $ 22.85 $ 17.95 $ — June 30 30.80 22.75 — September 30 45.20 26.80 .12 December 31 50.00 40.00 .12 MPS and LacriCATH are registered trademarks of Atrion Corporation