William D Mosley Insider Trading Activity

Corporate InsiderCEO · CIK 1388390

167

Total trades

$130.8M

Total volume

Oct 1, 2026

Last activity

STX

Seagate Technology Holdings plc

William D Mosley has been net-selling over the last 12 months with 0 purchases and 133 sales across 1 company.

STX is the most-traded position with 133 trades. The largest single transaction was a sale of STX for $10.0M on Mar 19, 2026.

Performance Scorecard

Forward stock performance after each transaction by William D Mosley. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIOD	AVG BUY RETURN	AVG SELL AVOIDED	SUCCESS RATE	TRADES
30 days	—	-18.5%	33%	144
90 days	—	-54.9%	4%	144
120 days	—	-84.1%	0%	119

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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STX · Seagate Technology Holdings plc

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Recent Trades

Showing the 50 most recent of 167 disclosed trades.

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
Oct 1, 2026	STX	Sell	1,080	$925.88	$1000K	−0.3%	CEO
Oct 1, 2026	STX	Sell	760	$923.78	$702K	−0.2%	CEO
Oct 1, 2026	STX	Sell	800	$922.66	$738K	−0.2%	CEO
Oct 1, 2026	STX	Sell	930	$921.63	$857K	−0.2%	CEO
Oct 1, 2026	STX	Sell	630	$920.62	$580K	−0.2%	CEO
Oct 1, 2026	STX	Sell	920	$918.49	$845K	−0.2%	CEO
Oct 1, 2026	STX	Sell	400	$917.22	$367K	−0.1%	CEO
Oct 1, 2026	STX	Sell	960	$915.01	$878K	−0.3%	CEO
Oct 1, 2026	STX	Sell	904	$913.94	$826K	−0.2%	CEO
Oct 1, 2026	STX	Sell	1,146	$912.04	$1.0M	−0.3%	CEO
Oct 1, 2026	STX	Sell	840	$910.69	$765K	−0.2%	CEO
Oct 1, 2026	STX	Sell	307	$909.84	$279K	−0.1%	CEO
Oct 1, 2026	STX	Sell	1,027	$908.58	$933K	−0.3%	CEO
Oct 1, 2026	STX	Sell	560	$907.43	$508K	−0.1%	CEO
Oct 1, 2026	STX	Sell	601	$906.42	$545K	−0.2%	CEO
Oct 1, 2026	STX	Sell	480	$904.33	$434K	−0.1%	CEO
Oct 1, 2026	STX	Sell	696	$903.36	$629K	−0.2%	CEO
Oct 1, 2026	STX	Sell	384	$902.55	$347K	−0.1%	CEO
Oct 1, 2026	STX	Sell	440	$901.49	$397K	−0.1%	CEO
Oct 1, 2026	STX	Sell	517	$900.46	$466K	−0.1%	CEO
Oct 1, 2026	STX	Sell	360	$898.10	$323K	−0.1%	CEO
Oct 1, 2026	STX	Sell	640	$924.72	$592K	−0.2%	CEO
Sep 14, 2026	STX	Sell	1,869.75	$781.23	$1.5M	−0.6%	CEO
Jul 1, 2026	STX	Sell	200	$892.08	$178K	−0.1%	CEO
Jul 1, 2026	STX	Sell	320	$887.97	$284K	−0.1%	CEO
Jul 1, 2026	STX	Sell	120	$891.13	$107K	−0.0%	CEO
Jul 1, 2026	STX	Sell	2,065	$918.67	$1.9M	−0.6%	CEO
Jul 1, 2026	STX	Sell	1,762	$917.67	$1.6M	−0.5%	CEO
Jul 1, 2026	STX	Sell	1,185	$916.61	$1.1M	−0.4%	CEO
Jul 1, 2026	STX	Sell	2,308	$915.65	$2.1M	−0.7%	CEO
Jul 1, 2026	STX	Sell	2,379	$914.77	$2.2M	−0.7%	CEO
Jul 1, 2026	STX	Sell	1,596	$913.65	$1.5M	−0.5%	CEO
Jul 1, 2026	STX	Sell	813	$912.72	$742K	−0.2%	CEO
Jul 1, 2026	STX	Sell	960	$911.63	$875K	−0.3%	CEO
Jul 1, 2026	STX	Sell	399	$910.49	$363K	−0.1%	CEO
Jul 1, 2026	STX	Sell	441	$909.52	$401K	−0.1%	CEO
Jul 1, 2026	STX	Sell	391	$907.56	$355K	−0.1%	CEO
Jul 1, 2026	STX	Sell	609	$906.47	$552K	−0.2%	CEO
Jul 1, 2026	STX	Sell	720	$904.36	$651K	−0.2%	CEO
Jul 1, 2026	STX	Sell	560	$903.08	$506K	−0.2%	CEO
Jul 1, 2026	STX	Sell	401	$900.82	$361K	−0.1%	CEO
Jul 1, 2026	STX	Sell	308	$900.05	$277K	−0.1%	CEO
Jul 1, 2026	STX	Sell	300	$898.79	$270K	−0.1%	CEO
Jul 1, 2026	STX	Sell	340	$897.78	$305K	−0.1%	CEO
Jul 1, 2026	STX	Sell	400	$896.77	$359K	−0.1%	CEO
Jul 1, 2026	STX	Sell	254	$895.66	$227K	−0.1%	CEO
Jul 1, 2026	STX	Sell	266	$894.39	$238K	−0.1%	CEO
Jul 1, 2026	STX	Sell	40	$892.93	$36K	−0.0%	CEO
May 20, 2026	STX	Sell	120	$742.00	$89K	−0.0%	CEO
May 20, 2026	STX	Sell	560	$743.14	$416K	−0.2%	CEO