MOSLEY WILLIAM D - Insider Transactions

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Ticker	Owner	Relationship	Date	Transaction	Cost	#Shares	Value ($)	#Shares Total	SEC Form 4
STX	MOSLEY WILLIAM D	CEO	Dec 09 '25	Option Exercise	0.00	5,230	0	449,475	Dec 11 04:04 PM
STX	MOSLEY WILLIAM D	CEO	Dec 01 '25	Sale	271.03	20,000	5,420,577	445,668	Dec 02 05:32 PM
STX	WILLIAM MOSLEY	Director	Dec 01 '25	Proposed Sale	276.69	20,000	5,533,800		Dec 01 04:36 PM
STX	MOSLEY WILLIAM D	CEO	Nov 03 '25	Sale	262.82	20,000	5,256,463	465,668	Nov 05 04:33 PM
STX	WILLIAM MOSLEY	Director	Nov 03 '25	Proposed Sale	255.88	20,000	5,117,600		Nov 03 04:31 PM

STX	MOSLEY WILLIAM D	CEO	Oct 01 '25	Sale	249.90	20,000	4,997,981	485,668	Oct 03 04:08 PM
STX	WILLIAM MOSLEY	Director	Oct 01 '25	Proposed Sale	236.06	20,000	4,721,200		Oct 01 04:30 PM
STX	MOSLEY WILLIAM D	CEO	Sep 11 '25	Option Exercise	0.00	3,319	0	475,107	Sep 15 06:11 PM
STX	MOSLEY WILLIAM D	CEO	Sep 14 '25	Option Exercise	0.00	65,170	0	538,599	Sep 15 06:11 PM
STX	MOSLEY WILLIAM D	CEO	Sep 09 '25	Option Exercise	0.00	26,034	0	474,421	Sep 11 04:05 PM
STX	MOSLEY WILLIAM D	CEO	Sep 02 '25	Sale	168.97	20,000	3,379,482	458,912	Sep 04 04:29 PM
STX	WILLIAM MOSLEY	Director	Sep 02 '25	Proposed Sale	167.40	20,000	3,348,000		Sep 02 04:33 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Aug 01 '25	Sale	153.75	20,000	3,074,963	478,912	Aug 04 04:29 PM
STX	WILLIAM MOSLEY	Director	Aug 01 '25	Proposed Sale	157.01	20,000	3,140,200		Aug 01 04:54 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Jul 01 '25	Sale	144.66	20,000	2,893,119	498,710	Jul 02 04:49 PM

STX	WILLIAM MOSLEY	Director	Jul 01 '25	Proposed Sale	144.33	20,000	2,886,600		Jul 01 04:33 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Jun 11 '25	Option Exercise	0.00	3,318	0	520,387	Jun 12 04:31 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Jun 09 '25	Option Exercise	52.08	57,161	2,977,129	570,024	Jun 10 05:00 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Jun 09 '25	Sale	130.19	54,347	7,075,425	515,677	Jun 10 05:00 PM
STX	WILLIAM MOSLEY	Director	Jun 09 '25	Proposed Sale	126.97	54,347	6,900,439		Jun 09 04:29 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Jun 03 '25	Option Exercise	54.78	50,000	2,739,000	565,677	Jun 04 04:41 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Jun 03 '25	Sale	120.27	50,000	6,013,555	515,677	Jun 04 04:41 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Jun 02 '25	Sale	118.88	20,000	2,377,533	515,677	Jun 04 04:41 PM
STX	WILLIAM MOSLEY	Director	Jun 03 '25	Proposed Sale	119.15	10,000	1,191,500		Jun 03 04:26 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	May 22 '25	Sale	109.47	70,000	7,663,048	485,677	May 23 04:02 PM
STX	WILLIAM MOSLEY	Director	May 22 '25	Proposed Sale	104.43	130,000	13,575,900		May 22 04:24 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Apr 01 '25	Sale	84.56	20,000	1,691,119	555,677	Apr 02 05:19 PM
STX	WILLIAM D. MOSLEY	Director	Apr 01 '25	Proposed Sale	84.95	20,000	1,699,000		Apr 01 04:21 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Mar 11 '25	Option Exercise	0.00	3,318	0	577,354	Mar 12 04:31 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Mar 09 '25	Option Exercise	0.00	2,814	0	575,458	Mar 10 05:31 PM

STX	MOSLEY WILLIAM D	Chief Executive Officer	Mar 03 '25	Sale	101.57	20,000	2,031,474	572,644	Mar 04 04:46 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Feb 20 '25	Option Exercise	0.00	11,808	0	597,399	Feb 24 04:54 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Feb 03 '25	Sale	94.13	20,000	1,882,678	585,591	Feb 05 04:12 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Jan 02 '25	Sale	86.65	20,000	1,733,019	605,530	Jan 06 04:35 PM
STX	WILLIAM D. MOSLEY	Director	Jan 02 '25	Proposed Sale	86.31	60,000	5,178,600		Jan 02 04:21 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Dec 11 '24	Option Exercise	0.00	3,318	0	627,207	Dec 13 04:57 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Dec 09 '24	Option Exercise	0.00	2,814	0	625,311	Dec 11 04:26 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Dec 02 '24	Sale	102.83	20,000	2,056,545	622,497	Dec 04 04:15 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Nov 01 '24	Sale	99.53	20,000	1,990,619	642,497	Nov 04 05:17 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Oct 19 '24	Option Exercise	0.00	28,060	0	676,676	Oct 22 06:13 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Oct 01 '24	Sale	107.68	20,000	2,153,639	648,616	Oct 02 04:41 PM
STX	WILLIAM D. MOSLEY	Director	Oct 01 '24	Proposed Sale	109.53	60,000	6,571,800		Oct 01 04:30 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 26 '24	Option Exercise	50.29	141,785	7,130,368	810,401	Sep 27 04:23 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 26 '24	Sale	110.18	141,785	15,621,233	668,616	Sep 27 04:23 PM
STX	WILLIAM D. MOSLEY	Director	Sep 26 '24	Proposed Sale	107.76	121,785	13,123,552		Sep 26 04:25 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 11 '24	Option Exercise	0.00	13,275	0	675,324	Sep 13 04:04 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 09 '24	Option Exercise	0.00	56,156	0	672,034	Sep 11 04:11 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 03 '24	Sale	97.18	20,000	1,943,535	634,270	Sep 05 04:18 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Aug 07 '24	Sale	93.46	20,000	1,869,217	654,270	Aug 09 04:16 PM
STX	WILLIAM D. MOSLEY	Director	Aug 07 '24	Proposed Sale	93.68	60,000	5,620,800		Aug 07 04:12 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Jun 09 '24	Option Exercise	0.00	2,814	0	675,006	Jun 11 04:42 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Mar 09 '24	Option Exercise	0.00	2,814	0	673,192	Mar 12 04:52 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Mar 09 '24	Sale	92.69	1,000	92,690	672,192	Mar 12 04:52 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Dec 08 '23	Option Exercise	30.95	153,188	4,741,169	822,148	Dec 12 04:52 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Dec 09 '23	Option Exercise	0.00	2,814	0	671,774	Dec 12 04:52 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Dec 09 '23	Sale	80.59	1,396	112,504	670,378	Dec 12 04:52 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Dec 08 '23	Sale	80.21	153,188	12,287,209	668,960	Dec 12 04:52 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 09 '23	Option Exercise	0.00	30,803	0	637,420	Sep 12 08:30 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 01 '23	Option Exercise	36.09	98,860	3,567,857	715,169	Sep 05 05:06 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Aug 31 '23	Option Exercise	33.52	200,000	6,704,000	716,309	Sep 05 05:06 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Aug 31 '23	Sale	70.28	200,000	14,055,899	616,309	Sep 05 05:06 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 01 '23	Sale	72.97	98,860	7,214,240	616,309	Sep 05 05:06 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 09 '22	Option Exercise	0.00	9,006	0	558,179	Sep 13 09:20 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 01 '21	Option Exercise	60.83	31,500	1,916,145	582,113	Sep 03 04:23 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 01 '21	Sale	86.95	31,500	2,739,059	550,613	Sep 03 04:23 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	May 03 '21	Option Exercise	50.10	77,754	3,895,475	570,164	May 05 04:19 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	May 03 '21	Sale	92.49	77,754	7,191,669	492,410	May 05 04:19 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 06 '19	Option Exercise	35.59	90,000	3,202,800	353,103	Sep 10 04:36 PM
STX	MOSLEY WILLIAM D	Chief Executive Officer	Sep 06 '19	Sale	54.31	90,000	4,887,900	263,103	Sep 10 04:36 PM
STX	MOSLEY WILLIAM D	President, Ops and Technology	Apr 10 '15	Option Exercise	10.06	38,581	387,959	127,025	Apr 14 05:36 PM
STX	MOSLEY WILLIAM D	President, Ops and Technology	Apr 10 '15	Sale	55.51	58,581	3,251,685	68,444	Apr 14 05:36 PM
STX	MOSLEY WILLIAM D	EVP, Operations and R&D	Jan 02 '15	Option Exercise	4.04	38,581	156,060	146,756	Jan 06 08:13 PM
STX	MOSLEY WILLIAM D	EVP, Operations and R&D	Jan 02 '15	Sale	66.12	58,581	3,873,446	88,175	Jan 06 08:13 PM
STX	MOSLEY WILLIAM D	EVP, Operations and R&D	Dec 09 '14	Option Exercise	4.41	38,581	170,191	166,756	Dec 11 06:12 PM
STX	MOSLEY WILLIAM D	EVP, Operations and R&D	Dec 09 '14	Sale	65.53	58,581	3,838,636	108,175	Dec 11 06:12 PM
STX	MOSLEY WILLIAM D	EVP, Operations and R&D	Oct 31 '14	Sale	62.19	64,939	4,038,569	128,175	Nov 04 07:08 PM
STX	MOSLEY WILLIAM D	EVP, Operations and R&D	Sep 10 '14	Sale	61.19	2,811	172,015	87,772	Sep 12 08:16 PM
STX	MOSLEY WILLIAM D	EVP, Operations and R&D	Sep 11 '14	Sale	60.04	3,058	183,587	84,714	Sep 12 08:16 PM
STX	MOSLEY WILLIAM D	President, Ops & Technology	Nov 01 '13	Sale	48.38	41,600	2,012,683	56,406	Nov 05 05:18 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Jan 22 '13	Option Exercise	6.12	215,677	1,319,351	231,134	Jan 24 05:38 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Jan 22 '13	Sale	37.00	215,677	7,980,049	15,457	Jan 24 05:38 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Sep 13 '12	Sale	30.06	14,625	439,617	20,957	Sep 17 08:42 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Sep 14 '12	Sale	30.03	5,500	165,172	15,457	Sep 17 08:42 PM
STX	MOSLEY WILLIAM D	EVP, Operations	May 01 '12	Option Exercise	4.04	150,000	606,750	164,975	May 03 05:36 PM
STX	MOSLEY WILLIAM D	EVP, Operations	May 01 '12	Sale	32.00	150,000	4,800,000	14,975	May 03 05:36 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 25 '12	Option Exercise	25.48	125,000	3,185,000	139,975	Apr 27 06:08 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 25 '12	Sale	29.95	125,000	3,743,750	14,975	Apr 27 06:08 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 16 '12	Option Exercise	26.35	35,447	934,028	50,422	Apr 18 04:43 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 18 '12	Option Exercise	26.35	14,553	383,472	29,528	Apr 18 04:43 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 18 '12	Sale	29.00	14,553	422,037	14,975	Apr 18 04:43 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 16 '12	Sale	29.00	35,447	1,027,963	14,975	Apr 18 04:43 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Mar 08 '12	Option Exercise	25.16	200,000	5,032,250	214,975	Mar 09 05:05 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Mar 08 '12	Sale	28.00	200,000	5,600,000	14,975	Mar 09 05:05 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Feb 01 '12	Option Exercise	5.19	100,000	518,940	114,291	Feb 03 05:32 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Feb 01 '12	Sale	23.72	100,000	2,371,583	14,291	Feb 03 05:32 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Jan 20 '12	Option Exercise	4.04	20,000	80,900	34,291	Jan 20 05:59 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Jan 20 '12	Sale	20.00	20,000	400,000	14,291	Jan 20 05:59 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Jan 12 '12	Option Exercise	7.68	46,666	358,251	60,957	Jan 13 05:30 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Jan 13 '12	Option Exercise	4.04	20,000	80,900	34,291	Jan 13 05:30 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Jan 13 '12	Sale	19.50	20,000	390,000	14,291	Jan 13 05:30 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Jan 12 '12	Sale	19.00	46,666	886,654	14,291	Jan 13 05:30 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Nov 09 '11	Sale	17.74	8,000	141,941	14,291	Nov 10 06:50 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Nov 04 '11	Option Exercise	4.04	100,000	404,500	122,291	Nov 08 07:17 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Nov 07 '11	Option Exercise	10.59	30,833	326,487	42,105	Nov 08 07:17 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Nov 07 '11	Sale	18.50	30,833	570,410	22,291	Nov 08 07:17 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Nov 04 '11	Sale	18.00	100,000	1,800,000	22,291	Nov 08 07:17 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 19 '11	Option Exercise	14.18	30,000	425,250	46,105	Apr 20 01:36 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 19 '11	Sale	18.00	30,000	540,000	16,105	Apr 20 01:36 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 15 '11	Option Exercise	15.06	30,000	451,950	46,105	Apr 18 12:21 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 14 '11	Option Exercise	15.06	60,000	903,900	76,105	Apr 18 12:21 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 14 '11	Sale	16.75	60,000	1,005,000	16,105	Apr 18 12:21 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 15 '11	Sale	17.50	30,000	525,000	16,105	Apr 18 12:21 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 06 '11	Option Exercise	13.62	45,215	615,828	61,320	Apr 08 04:41 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 08 '11	Option Exercise	10.68	31,128	332,493	47,233	Apr 08 04:41 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 08 '11	Sale	16.00	31,128	498,048	16,105	Apr 08 04:41 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 06 '11	Sale	15.00	45,215	678,225	16,105	Apr 08 04:41 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 01 '11	Option Exercise	13.62	19,286	262,675	35,391	Apr 05 02:47 PM
STX	MOSLEY WILLIAM D	EVP, Operations	Apr 01 '11	Sale	15.00	19,286	289,290	16,105	Apr 05 02:47 PM
STX	MOSLEY WILLIAM D	EVP, Sales and Marketing	Jan 25 '11	Sale	13.30	2,500	33,258	98,543	Jan 27 04:51 PM

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MOSLEY WILLIAM D - Insider Transactions

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