X0202 4 2004-05-03 0000754009 SIERRA HEALTH SERVICES INC SIE 0000901783 MARLON ANTHONY M MD 2724 N. TENAYA WAY LAS VEGAS NV 89128 1 1 0 0 COB, CEO and President Common Stock 2004-05-03 4 M 0 20000 5.73 A 224680 D Common Stock 2004-05-03 4 S 0 20000 37.1377 D 204680 D Common Stock 152648 I By the AMM & RM Family Limited Partnership Common Stock 935341 I By the Marlon Family Trust Common Stock 1500 I By the AMRM Family Partners Ltd. Common Stock 375000 I By the Anthony M. Marlon Charitable Remainder Trust Common Stock 375000 I By the Renee Marlon Charitable Remainder Trust Common Stock 443662 I By the AMRM Family Trust Common Stock 100000 I By the AMM 2003 Retained Annuity Trust Common Stock 100000 I By the Renee Marlon 2003 Retained Annuity Trust Common Stock 129915 I By the 401(k) Plan Employee Stock Option (Right to Buy) 5.73 2004-05-03 4 M 0 20000 0 D 2002-01-21 2011-05-20 Common Stock 20000 58272 D Sale under Rule 10b5-1 Trading Plan. The reporting person disclaims beneficial ownership of the shares of Common Stock held by the respective trusts and this report shall not be deemed an admission that the reporting person is the beneficial owner of, or has a pecuniary interest in, such securities for purposes of Section 16 or any other purpose. Exercise of options granted in consideration for services under the Company's 1995 Long-Term Incentive Plan, which meets the requirements of, and which transactions are exempted by, Rule 16b-3 and Rule 16b-6(b). Exercisable as to 33 1/3% on each of 1/21/02, 7/21/02 and 1/21/03. Anthony M. Marlon, M.D./Jayne Primaky POA 2004-05-04