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General | Insiders | Insider Transactions | Monthly Overview | Weekly Overview

Overview of all insider trading transactions in WESTERN DIGITAL CORP. Get notifications about new insider transactions in WESTERN DIGITAL CORP for free.

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Date	Ticker	Company	Owner	Relationship	Transaction	Code	Cost ($)	Shares	Transaction Value ($)	Total Shares	% Holdings
May 23 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Grant	A	0.00	20,000	0	53,520	33.5 K to 53.5 K (+59.67 %)
May 06 2005	WDC	WESTERN DIGITAL CO ...	COTE KATHLEEN A	Director	Option Exercise	M	4.88	15,000	73,125	52,500
May 06 2005	WDC	WESTERN DIGITAL CO ...	COTE KATHLEEN A	Director	Sell	S	13.06	3,400	44,404	0	3.4 K to 0 (-100.00 %)
May 06 2005	WDC	WESTERN DIGITAL CO ...	COTE KATHLEEN A	Director	Sell	S	13.00	11,600	150,800	3,400	15 K to 3.4 K (-77.33 %)
May 06 2005	WDC	WESTERN DIGITAL CO ...	COTE KATHLEEN A	Director	Buy	M	4.88	15,000	73,125	15,000	0 to 15 K
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Option Exercise	M	6.19	183,750	1,136,953	0
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Option Exercise	M	6.00	7,500	45,000	0
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Option Exercise	M	4.71	10,000	47,100	0
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Option Exercise	M	3.85	42,188	162,424	32,812
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Option Exercise	M	2.10	15,750	33,075	6,750
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Sell	S	12.03	900	10,827	33,520	34.4 K to 33.5 K (-2.61 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Sell	S	12.02	20,000	240,400	34,420	54.4 K to 34.4 K (-36.75 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Sell	S	12.00	250,100	3,001,200	54,420	304.5 K to 54.4 K (-82.13 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Sell	S	12.08	1,012	12,225	304,520	305.5 K to 304.5 K (-0.33 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Sell	S	12.06	3,100	37,386	305,532	308.6 K to 305.5 K (-1.00 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Sell	S	12.04	15,450	186,018	308,632	324.1 K to 308.6 K (-4.77 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Sell	S	12.01	11,064	132,879	324,082	335.1 K to 324.1 K (-3.30 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Buy	M	3.85	42,188	162,424	335,146	293 K to 335.1 K (+14.40 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Buy	M	4.71	10,000	47,100	292,958	283 K to 293 K (+3.53 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Buy	M	2.10	15,750	33,075	282,958	267.2 K to 283 K (+5.89 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Buy	M	6.00	7,500	45,000	267,208	259.7 K to 267.2 K (+2.89 %)
Mar 09 2005	WDC	WESTERN DIGITAL CO ...	MOGHADAM HOSSEIN M	Sr. VP, Research & ...	Buy	M	6.19	183,750	1,136,953	259,708	76 K to 259.7 K (+241.91 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MILLIGAN STEPHEN D	Sr. VP & CFO	Option Exercise	M	3.85	17,500	67,375	87,000
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MILLIGAN STEPHEN D	Sr. VP & CFO	Sell	S	11.80	7,200	84,960	236,425	243.6 K to 236.4 K (-2.96 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MILLIGAN STEPHEN D	Sr. VP & CFO	Sell	S	11.75	10,300	121,025	243,625	253.9 K to 243.6 K (-4.06 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MILLIGAN STEPHEN D	Sr. VP & CFO	Buy	M	3.85	17,500	67,375	253,925	236.4 K to 253.9 K (+7.40 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Buy	P	10.45	5,000	52,241	5,000	0 to 5 K
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Sell	S	8.25	5,000	41,250	0	5 K to 0 (-100.00 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Option Exercise	M	6.00	200,000	1,200,000	173,521
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	11.94	1,000	11,940	739,756	740.8 K to 739.8 K (-0.13 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	11.92	1,100	13,112	740,756	741.9 K to 740.8 K (-0.15 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	11.90	27,900	332,010	741,856	769.8 K to 741.9 K (-3.62 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	11.89	58,200	691,998	769,756	828 K to 769.8 K (-7.03 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	11.88	13,700	162,756	827,956	841.7 K to 828 K (-1.63 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	11.87	31,500	373,905	841,656	873.2 K to 841.7 K (-3.61 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	11.86	72,400	858,664	873,156	945.6 K to 873.2 K (-7.66 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	11.85	144,200	1,708,770	945,556	1.1 M to 945.6 K (-13.23 %)
Mar 04 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Buy	M	6.00	200,000	1,200,000	1,089,756	889.8 K to 1.1 M (+22.48 %)
Feb 22 2005	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Option Exercise	M	4.56	50,000	228,125	0
Feb 22 2005	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Sell	S	11.50	50,000	575,000	0	50 K to 0 (-100.00 %)
Feb 22 2005	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Buy	M	4.56	50,000	228,125	50,000	0 to 50 K
Feb 17 2005	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Option Exercise	M	4.56	50,000	228,125	50,000
Feb 17 2005	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Sell	S	11.25	50,000	562,500	0	50 K to 0 (-100.00 %)
Feb 17 2005	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Buy	M	4.56	50,000	228,125	50,000	0 to 50 K
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	BEHRENDT PETER D	Director	Option Exercise	M	0.00	4,099	0	5,759
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	BEHRENDT PETER D	Director	Buy	M	0.00	4,099	0	21,131	17 K to 21.1 K (+24.07 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Option Exercise	M	6.95	100,000	695,000	0
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Option Exercise	M	6.94	86,600	600,788	0
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Option Exercise	M	6.00	285,800	1,714,800	0
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.63	2,391	27,807	345,000	347.4 K to 345 K (-0.69 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.61	2,600	30,186	347,391	350 K to 347.4 K (-0.74 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.56	3,500	40,460	349,991	353.5 K to 350 K (-0.99 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.55	1,500	17,325	353,491	355 K to 353.5 K (-0.42 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.12	100,000	1,112,000	354,991	455 K to 355 K (-21.98 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.11	10,000	111,100	454,991	465 K to 455 K (-2.15 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.10	62,400	692,640	464,991	527.4 K to 465 K (-11.83 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.09	13,000	144,170	527,391	540.4 K to 527.4 K (-2.41 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.08	2,000	22,160	540,391	542.4 K to 540.4 K (-0.37 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.07	2,100	23,247	542,391	544.5 K to 542.4 K (-0.39 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.06	7,500	82,950	544,491	552 K to 544.5 K (-1.36 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	11.05	75,400	833,170	551,991	627.4 K to 552 K (-12.02 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.99	100,000	1,099,000	627,391	727.4 K to 627.4 K (-13.75 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.95	100,000	1,095,000	727,391	827.4 K to 727.4 K (-12.09 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Buy	M	6.00	285,800	1,714,800	827,391	541.6 K to 827.4 K (+52.77 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Buy	M	6.95	100,000	695,000	541,591	441.6 K to 541.6 K (+22.65 %)
Feb 03 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Buy	M	6.94	86,600	600,788	441,591	355 K to 441.6 K (+24.39 %)
Jan 24 2005	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Option Exercise	A	10.21	58,000	592,180	58,000
Jan 24 2005	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Grant	A	0.00	162,000	0	224,729	62.7 K to 224.7 K (+258.25 %)
Jan 24 2005	WDC	WESTERN DIGITAL CO ...	MILLIGAN STEPHEN D	Sr. VP & CFO	Option Exercise	A	10.21	54,000	551,340	54,000
Jan 24 2005	WDC	WESTERN DIGITAL CO ...	MILLIGAN STEPHEN D	Sr. VP & CFO	Grant	A	0.00	160,000	0	235,832	75.8 K to 235.8 K (+210.99 %)
Jan 24 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Option Exercise	A	10.21	250,000	2,552,500	250,000
Jan 24 2005	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Grant	A	0.00	345,000	0	354,210	9.2 K to 354.2 K (+3,745.93 %)
Jan 24 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Option Exercise	A	10.21	500,000	5,105,000	500,000
Jan 24 2005	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Grant	A	0.00	550,000	0	889,756	339.8 K to 889.8 K (+161.88 %)
Jan 04 2005	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Option Exercise	A	0.00	4,527	0	4,527
Jan 04 2005	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Option Exercise	A	0.00	2,306	0	19,851
Jan 04 2005	WDC	WESTERN DIGITAL CO ...	MOORE ROGER H/CA	Director	Option Exercise	A	0.00	4,527	0	4,527
Jan 04 2005	WDC	WESTERN DIGITAL CO ...	LAMBERT MICHAEL D	Director	Option Exercise	A	0.00	4,527	0	4,527
Jan 04 2005	WDC	WESTERN DIGITAL CO ...	KIMSEY WILLIAM L	Director	Option Exercise	A	0.00	4,527	0	4,527
Jan 04 2005	WDC	WESTERN DIGITAL CO ...	DENERO HENRY T	Director	Option Exercise	A	0.00	4,527	0	4,527
Jan 04 2005	WDC	WESTERN DIGITAL CO ...	DENERO HENRY T	Director	Grant	A	10.84	1,845	20,000	3,541	1.7 K to 3.5 K (+108.79 %)
Jan 04 2005	WDC	WESTERN DIGITAL CO ...	COTE KATHLEEN A	Director	Option Exercise	A	0.00	4,527	0	4,527
Jan 04 2005	WDC	WESTERN DIGITAL CO ...	BEHRENDT PETER D	Director	Option Exercise	A	0.00	4,527	0	4,527
Jan 04 2005	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Payment of Exercise	F	10.84	16,681	180,822	62,729	79.4 K to 62.7 K (-21.01 %)
Dec 22 2004	WDC	WESTERN DIGITAL CO ...	MOORE ROGER H/CA	Director	Option Exercise	A	0.00	90	0	57,567
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MOORE ROGER H/CA	Director	Option Exercise	A	0.00	91	0	57,477
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Option Exercise	M	6.00	100,000	600,000	373,521
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.58	15,000	158,700	339,756	354.8 K to 339.8 K (-4.23 %)
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.57	1,100	11,627	354,756	355.9 K to 354.8 K (-0.31 %)
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.56	20,800	219,648	355,856	376.7 K to 355.9 K (-5.52 %)
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.55	13,100	138,205	376,656	389.8 K to 376.7 K (-3.36 %)
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.53	11,100	116,883	389,756	400.9 K to 389.8 K (-2.77 %)
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.52	13,900	146,228	400,856	414.8 K to 400.9 K (-3.35 %)
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.51	2,000	21,020	414,756	416.8 K to 414.8 K (-0.48 %)
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.50	23,000	241,500	416,756	439.8 K to 416.8 K (-5.23 %)
Dec 16 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Buy	M	6.00	100,000	600,000	439,756	339.8 K to 439.8 K (+29.43 %)
Dec 13 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Option Exercise	M	6.23	5,000	31,150	70,000
Dec 13 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Option Exercise	M	3.85	25,000	96,250	37,500
Dec 13 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Sell	S	10.36	1,600	16,576	79,410	81 K to 79.4 K (-1.98 %)
Dec 13 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Sell	S	10.35	28,400	293,940	81,010	109.4 K to 81 K (-25.96 %)
Dec 13 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Buy	M	3.85	25,000	96,250	109,410	84.4 K to 109.4 K (+29.62 %)
Dec 13 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Buy	M	6.23	5,000	31,150	84,410	79.4 K to 84.4 K (+6.30 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Option Exercise	M	8.00	12,500	100,000	0
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Option Exercise	M	7.69	10,000	76,875	0
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Option Exercise	M	4.38	50,000	218,750	0
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Option Exercise	M	3.94	7,500	29,531	0
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Option Exercise	M	3.25	5,000	16,250	0
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Sell	S	10.20	85,000	867,000	0	85 K to 0 (-100.00 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Buy	M	4.38	50,000	218,750	85,000	35 K to 85 K (+142.86 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Buy	M	3.25	5,000	16,250	35,000	30 K to 35 K (+16.67 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Buy	M	3.94	7,500	29,531	30,000	22.5 K to 30 K (+33.33 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Buy	M	7.69	10,000	76,875	22,500	12.5 K to 22.5 K (+80.00 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	PARDUN THOMAS E	Director	Buy	M	8.00	12,500	100,000	12,500	0 to 12.5 K
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Option Exercise	M	6.00	14,200	85,200	285,800
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Option Exercise	M	4.94	25,300	124,919	0
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Option Exercise	M	4.81	26,250	126,328	0
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Option Exercise	M	3.85	137,500	529,375	62,500
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Option Exercise	M	2.10	46,750	98,175	0
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.91	6,700	73,097	9,210	15.9 K to 9.2 K (-42.11 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.90	43,300	471,970	15,910	59.2 K to 15.9 K (-73.13 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.75	91,500	983,625	59,210	150.7 K to 59.2 K (-60.71 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.78	8,500	91,630	150,710	159.2 K to 150.7 K (-5.34 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.70	100,000	1,070,000	159,210	259.2 K to 159.2 K (-38.58 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Buy	M	6.00	14,200	85,200	259,210	245 K to 259.2 K (+5.80 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Buy	M	4.94	25,300	124,919	245,010	219.7 K to 245 K (+11.52 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Buy	M	4.81	26,250	126,328	219,710	193.5 K to 219.7 K (+13.57 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Buy	M	3.85	137,500	529,375	193,460	56 K to 193.5 K (+245.71 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Buy	M	2.10	46,750	98,175	55,960	9.2 K to 56 K (+507.60 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Option Exercise	M	6.00	15,000	90,000	0
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Option Exercise	M	4.44	15,000	66,563	2,700
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Sell	S	10.50	11,700	122,850	79,410	91.1 K to 79.4 K (-12.84 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Sell	S	10.41	5,000	52,050	91,110	96.1 K to 91.1 K (-5.20 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Sell	S	10.40	13,300	138,320	96,110	109.4 K to 96.1 K (-12.16 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Buy	M	6.00	15,000	90,000	109,410	94.4 K to 109.4 K (+15.89 %)
Dec 10 2004	WDC	WESTERN DIGITAL CO ...	BUKATY RAYMOND M	Sr VP, Admin, Gen C ...	Buy	M	4.44	15,000	66,563	94,410	79.4 K to 94.4 K (+18.89 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Option Exercise	M	6.00	26,479	158,874	473,521
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Option Exercise	M	4.56	18,521	84,502	0
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.85	5,700	61,845	339,756	345.5 K to 339.8 K (-1.65 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.86	8,000	86,880	345,456	353.5 K to 345.5 K (-2.26 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.87	8,000	86,960	353,456	361.5 K to 353.5 K (-2.21 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.90	20,800	226,720	361,456	382.3 K to 361.5 K (-5.44 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Sell	S	10.92	2,500	27,300	382,256	384.8 K to 382.3 K (-0.65 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Buy	M	6.00	26,479	158,874	384,756	358.3 K to 384.8 K (+7.39 %)
Dec 07 2004	WDC	WESTERN DIGITAL CO ...	MASSENGILL MATTHEW E	Chairman and CEO	Buy	M	4.56	18,521	84,502	358,277	339.8 K to 358.3 K (+5.45 %)
Dec 06 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Option Exercise	M	2.10	100,000	210,000	46,750
Dec 06 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.70	163,400	1,748,380	9,210	172.6 K to 9.2 K (-94.66 %)
Dec 06 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.65	210,225	2,238,896	172,610	382.8 K to 172.6 K (-54.91 %)
Dec 06 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.66	16,000	170,560	382,835	398.8 K to 382.8 K (-4.01 %)
Dec 06 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.67	13,100	139,777	398,835	411.9 K to 398.8 K (-3.18 %)
Dec 06 2004	WDC	WESTERN DIGITAL CO ...	SHAKEEL ARIF	President and COO	Sell	S	10.71	800	8,568	411,935	412.7 K to 411.9 K (-0.19 %)

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