William D Mosley Insider Trading Activity

Corporate InsiderCEO · CIK 1388390

144

Total trades

$115.3M

Total volume

Jul 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 136 sales across 1 company.

STX is the most-traded position with 136 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	—	-23.5%	18%	119
90 days	—	-73.9%	0%	102
120 days	—	-95.8%	0%	89

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 144 disclosed trades.

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
Jul 1, 2026	STX	Sell	308	$900.05	$277K	−0.1%	CEO
Jul 1, 2026	STX	Sell	2,065	$918.67	$1.9M	−0.6%	CEO
Jul 1, 2026	STX	Sell	340	$897.78	$305K	−0.1%	CEO
Jul 1, 2026	STX	Sell	120	$891.13	$107K	−0.0%	CEO
Jul 1, 2026	STX	Sell	609	$906.47	$552K	−0.2%	CEO
Jul 1, 2026	STX	Sell	200	$892.08	$178K	−0.1%	CEO
Jul 1, 2026	STX	Sell	401	$900.82	$361K	−0.1%	CEO
Jul 1, 2026	STX	Sell	400	$896.77	$359K	−0.1%	CEO
Jul 1, 2026	STX	Sell	300	$898.79	$270K	−0.1%	CEO
Jul 1, 2026	STX	Sell	254	$895.66	$227K	−0.1%	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	391	$907.56	$355K	−0.1%	CEO
Jul 1, 2026	STX	Sell	720	$904.36	$651K	−0.2%	CEO
Jul 1, 2026	STX	Sell	1,762	$917.67	$1.6M	−0.5%	CEO
Jul 1, 2026	STX	Sell	320	$887.97	$284K	−0.1%	CEO
Jul 1, 2026	STX	Sell	560	$903.08	$506K	−0.2%	CEO
Jul 1, 2026	STX	Sell	399	$910.49	$363K	−0.1%	CEO
Jul 1, 2026	STX	Sell	1,596	$913.65	$1.5M	−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	266	$894.39	$238K	−0.1%	CEO
Jul 1, 2026	STX	Sell	441	$909.52	$401K	−0.1%	CEO
Jul 1, 2026	STX	Sell	40	$892.93	$36K	−0.0%	CEO
May 20, 2026	STX	Sell	1,480	$756.83	$1.1M	−0.4%	CEO
May 20, 2026	STX	Sell	1,719	$748.53	$1.3M	−0.5%	CEO
May 20, 2026	STX	Sell	1,661	$755.72	$1.3M	−0.5%	CEO
May 20, 2026	STX	Sell	2,163	$754.70	$1.6M	−0.6%	CEO
May 20, 2026	STX	Sell	1,605	$747.64	$1.2M	−0.4%	CEO
May 20, 2026	STX	Sell	840	$744.52	$625K	−0.2%	CEO
May 20, 2026	STX	Sell	2,708	$753.69	$2.0M	−0.8%	CEO
May 20, 2026	STX	Sell	3,182	$752.72	$2.4M	−0.9%	CEO
May 20, 2026	STX	Sell	1,463	$746.53	$1.1M	−0.4%	CEO
May 20, 2026	STX	Sell	4,206	$751.75	$3.2M	−1.2%	CEO
May 20, 2026	STX	Sell	1,264	$745.55	$942K	−0.3%	CEO
May 20, 2026	STX	Sell	560	$743.14	$416K	−0.2%	CEO
May 20, 2026	STX	Sell	4,810	$750.84	$3.6M	−1.3%	CEO
May 20, 2026	STX	Sell	80	$758.65	$61K	−0.0%	CEO
May 20, 2026	STX	Sell	1,619	$749.67	$1.2M	−0.4%	CEO
May 20, 2026	STX	Sell	320	$758.05	$243K	−0.1%	CEO
May 20, 2026	STX	Sell	120	$742.00	$89K	−0.0%	CEO
Apr 1, 2026	STX	Sell	1,000	$425.94	$426K	−0.3%	CEO
Apr 1, 2026	STX	Sell	2,444	$422.93	$1.0M	−0.7%	CEO
Apr 1, 2026	STX	Sell	1,469	$423.98	$623K	−0.4%	CEO
Apr 1, 2026	STX	Sell	1,092	$418.79	$457K	−0.3%	CEO
Apr 1, 2026	STX	Sell	2,887	$421.84	$1.2M	−0.8%	CEO
Apr 1, 2026	STX	Sell	2,900	$420.77	$1.2M	−0.8%	CEO
Apr 1, 2026	STX	Sell	100	$399.05	$40K	−0.0%	CEO
Apr 1, 2026	STX	Sell	1,500	$419.94	$630K	−0.4%	CEO