X0202 4 2006-04-03 0000316206 STARWOOD HOTEL & RESORTS WORLDWIDE INC HOT 0001167024 SIEGEL KENNETH S STARWOOD HOTELS & RESORTS WORLDWIDE, INC 1111 WESTCHESTER AVE. WHITE PLAINS NY 10604 0 1 0 0 Executive V.P. & General Couns Shares 2006-04-03 4 M 0 20000 34.58 A 106583 D Shares 2006-04-03 4 M 0 27500 24.88 A 134083 D Shares 2006-04-03 4 S 0 5400 67.90 D 128683 D Shares 2006-04-03 4 S 0 100 67.88 D 128583 D Shares 2006-04-03 4 S 0 200 67.86 D 128383 D Shares 2006-04-03 4 S 0 11400 67.85 D 116983 D Shares 2006-04-03 4 S 0 11200 67.84 D 105783 D Shares 2006-04-03 4 S 0 1900 67.83 D 103883 D Shares 2006-04-03 4 S 0 4600 67.82 D 99283 D Shares 2006-04-03 4 S 0 3200 67.81 D 96083 D Shares 2006-04-03 4 S 0 2300 67.80 D 93783 D Shares 2006-04-03 4 S 0 500 67.79 D 93283 D Shares 2006-04-03 4 S 0 300 67.78 D 92983 D Shares 2006-04-03 4 S 0 800 67.77 D 92183 D Shares 2006-04-03 4 S 0 500 67.76 D 91683 D Shares 2006-04-03 4 S 0 900 67.75 D 90783 D Shares 2006-04-03 4 S 0 700 67.74 D 90083 D Shares 2006-04-03 4 S 0 2000 67.73 D 88083 D Shares 2006-04-03 4 S 0 1500 67.72 D 86583 D Option to Purchase Shares 34.58 2006-04-03 4 M 0 20000 0 D 2012-02-15 Shares 20000 0 D Option to Purchase Shares 24.88 2006-04-03 4 M 0 27500 0 D 2012-12-23 Shares 27500 27500 D Each holder of shares of common stock ("Corporation Shares") of Starwood Hotels & Resorts Worldwide, Inc. ("Starwood") owns an equivalent number of Class B shares of beneficial interest ("Trust Shares") of Starwood Hotels & Resorts, a real estate investment trust and subsidiary of Starwood. Corporation Shares and Trust Shares may be held and traded only in units consisting of one Corporation Share and one Trust Share ("Shares"). The transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 3/3/2006. This option vested in four equal annual installments beginning on 2/15/03. This option vests in four equal annual installments beginning 12/23/03. Kenneth S. Siegel 2006-04-05