MOSLEY WILLIAM D (CEO) sold 4.6% of their position (16.22K shares) of SEAGATE TECHNOLOGY HOLDINGS PLC on the open market

Open‑market sale worth $14.60M — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 29 sales

MOSLEY WILLIAM D

Filed: 6/2/2026ACC: 0001137789-26-000116

InsiderMOSLEY WILLIAM DCIK 1388390

→

IssuerSEAGATE TECHNOLOGY HOLDINGS PLCCIK 1137789

DirectorOfficer· CEO

Since Mar 2026

-16.22K

Net shares

Net seller

$14.60M

Total sold

Open market trades

0B · 29S

Total transactions

14K acquired · 30.22K disposed

Non-Derivative Transactions30

Ordinary Shares

Direct

M · Option Exercise

+14K

Price / share

$46.23

Trade value

$647.22K

% of position

4.1%

6/1/2026

339.59K→353.59K

Ordinary Shares

Direct

S · Sale

−600.00

Price / share

$884.62

Trade value

$530.77K

% of position

0.2%

6/1/2026

353.59K→352.99K

Ordinary Shares

Direct

S · Sale

−360.00

Price / share

$885.67

Trade value

$318.84K

% of position

0.1%

6/1/2026

352.99K→352.63K

Ordinary Shares

Direct

S · Sale

−360.00

Price / share

$886.72

Trade value

$319.22K

% of position

0.1%

6/1/2026

352.63K→352.27K

Ordinary Shares

Direct

S · Sale

−240.00

Price / share

$887.72

Trade value

$213.05K

% of position

0.1%

6/1/2026

352.27K→352.03K

Ordinary Shares

Direct

S · Sale

−163.00

Price / share

$888.89

Trade value

$144.89K

% of position

0.0%

6/1/2026

352.03K→351.87K

Ordinary Shares

Direct

S · Sale

−640.00

Price / share

$889.94

Trade value

$569.56K

% of position

0.2%

6/1/2026

351.87K→351.23K

Ordinary Shares

Direct

S · Sale

−1.16K

Price / share

$890.98

Trade value

$1.03M

% of position

0.3%

6/1/2026

351.23K→350.07K

Ordinary Shares

Direct

S · Sale

−760.00

Price / share

$892.06

Trade value

$677.97K

% of position

0.2%

6/1/2026

350.07K→349.31K

Ordinary Shares

Direct

S · Sale

−208.00

Price / share

$893.00

Trade value

$185.74K

% of position

0.1%

6/1/2026

349.31K→349.10K

Ordinary Shares

Direct

S · Sale

−480.00

Price / share

$894.20

Trade value

$429.21K

% of position

0.1%

6/1/2026

349.10K→348.62K

Ordinary Shares

Direct

S · Sale

−481.00

Price / share

$895.45

Trade value

$430.71K

% of position

0.1%

6/1/2026

348.62K→348.14K

Ordinary Shares

Direct

S · Sale

−320.00

Price / share

$896.43

Trade value

$286.86K

% of position

0.1%

6/1/2026

348.14K→347.82K

Ordinary Shares

Direct

S · Sale

−280.00

Price / share

$897.43

Trade value

$251.28K

% of position

0.1%

6/1/2026

347.82K→347.54K

Ordinary Shares

Direct

S · Sale

−813.00

Price / share

$898.41

Trade value

$730.41K

% of position

0.2%

6/1/2026

347.54K→346.73K

Ordinary Shares

Direct

S · Sale

−160.00

Price / share

$899.27

Trade value

$143.88K

% of position

0.0%

6/1/2026

346.73K→346.57K

Ordinary Shares

Direct

S · Sale

−320.00

Price / share

$900.54

Trade value

$288.17K

% of position

0.1%

6/1/2026

346.57K→346.25K

Ordinary Shares

Direct

S · Sale

−860.00

Price / share

$901.56

Trade value

$775.34K

% of position

0.2%

6/1/2026

346.25K→345.39K

Ordinary Shares

Direct

S · Sale

−839.00

Price / share

$902.62

Trade value

$757.30K

% of position

0.2%

6/1/2026

345.39K→344.55K

Ordinary Shares

Direct

S · Sale

−779.00

Price / share

$903.78

Trade value

$704.05K

% of position

0.2%

6/1/2026

344.55K→343.77K

Ordinary Shares

Direct

S · Sale

−879.00

Price / share

$904.70

Trade value

$795.24K

% of position

0.3%

6/1/2026

343.77K→342.89K

Ordinary Shares

Direct

S · Sale

−740.00

Price / share

$905.76

Trade value

$670.26K

% of position

0.2%

6/1/2026

342.89K→342.15K

Ordinary Shares

Direct

S · Sale

−1.28K

Price / share

$906.79

Trade value

$1.17M

% of position

0.4%

6/1/2026

342.15K→340.86K

Ordinary Shares

Direct

S · Sale

−760.00

Price / share

$907.75

Trade value

$689.89K

% of position

0.2%

6/1/2026

340.86K→340.10K

Ordinary Shares

Direct

S · Sale

−853.00

Price / share

$909.18

Trade value

$775.53K

% of position

0.3%

6/1/2026

340.10K→339.25K

Ordinary Shares

Direct

S · Sale

−600.00

Price / share

$910.15

Trade value

$546.09K

% of position

0.2%

6/1/2026

339.25K→338.65K

Ordinary Shares

Direct

S · Sale

−480.00

Price / share

$911.03

Trade value

$437.30K

% of position

0.1%

6/1/2026

338.65K→338.17K

Ordinary Shares

Direct

S · Sale

−320.00

Price / share

$912.22

Trade value

$291.91K

% of position

0.1%

6/1/2026

338.17K→337.85K

Ordinary Shares

Direct

S · Sale

−280.00

Price / share

$914.61

Trade value

$256.09K

% of position

0.1%

6/1/2026

337.85K→337.57K

Ordinary Shares

Direct

S · Sale

−200.00

Price / share

$915.52

Trade value

$183.10K

% of position

0.1%

6/1/2026

337.57K→337.37K

Total

Net shares

−2.22K

Net value

-$13.95M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Ordinary Shares Direct	6/1/2026	M · Option Exercise	+14K	$46.23	$647.22K	4.1%	339.59K	353.59K
Ordinary Shares Direct	6/1/2026	S · Sale	−600.00	$884.62	$530.77K	0.2%	353.59K	352.99K
Ordinary Shares Direct	6/1/2026	S · Sale	−360.00	$885.67	$318.84K	0.1%	352.99K	352.63K
Ordinary Shares Direct	6/1/2026	S · Sale	−360.00	$886.72	$319.22K	0.1%	352.63K	352.27K
Ordinary Shares Direct	6/1/2026	S · Sale	−240.00	$887.72	$213.05K	0.1%	352.27K	352.03K
Ordinary Shares Direct	6/1/2026	S · Sale	−163.00	$888.89	$144.89K	0.0%	352.03K	351.87K
Ordinary Shares Direct	6/1/2026	S · Sale	−640.00	$889.94	$569.56K	0.2%	351.87K	351.23K
Ordinary Shares Direct	6/1/2026	S · Sale	−1.16K	$890.98	$1.03M	0.3%	351.23K	350.07K
Ordinary Shares Direct	6/1/2026	S · Sale	−760.00	$892.06	$677.97K	0.2%	350.07K	349.31K
Ordinary Shares Direct	6/1/2026	S · Sale	−208.00	$893.00	$185.74K	0.1%	349.31K	349.10K
Ordinary Shares Direct	6/1/2026	S · Sale	−480.00	$894.20	$429.21K	0.1%	349.10K	348.62K
Ordinary Shares Direct	6/1/2026	S · Sale	−481.00	$895.45	$430.71K	0.1%	348.62K	348.14K
Ordinary Shares Direct	6/1/2026	S · Sale	−320.00	$896.43	$286.86K	0.1%	348.14K	347.82K
Ordinary Shares Direct	6/1/2026	S · Sale	−280.00	$897.43	$251.28K	0.1%	347.82K	347.54K
Ordinary Shares Direct	6/1/2026	S · Sale	−813.00	$898.41	$730.41K	0.2%	347.54K	346.73K
Ordinary Shares Direct	6/1/2026	S · Sale	−160.00	$899.27	$143.88K	0.0%	346.73K	346.57K
Ordinary Shares Direct	6/1/2026	S · Sale	−320.00	$900.54	$288.17K	0.1%	346.57K	346.25K
Ordinary Shares Direct	6/1/2026	S · Sale	−860.00	$901.56	$775.34K	0.2%	346.25K	345.39K
Ordinary Shares Direct	6/1/2026	S · Sale	−839.00	$902.62	$757.30K	0.2%	345.39K	344.55K
Ordinary Shares Direct	6/1/2026	S · Sale	−779.00	$903.78	$704.05K	0.2%	344.55K	343.77K
Ordinary Shares Direct	6/1/2026	S · Sale	−879.00	$904.70	$795.24K	0.3%	343.77K	342.89K
Ordinary Shares Direct	6/1/2026	S · Sale	−740.00	$905.76	$670.26K	0.2%	342.89K	342.15K
Ordinary Shares Direct	6/1/2026	S · Sale	−1.28K	$906.79	$1.17M	0.4%	342.15K	340.86K
Ordinary Shares Direct	6/1/2026	S · Sale	−760.00	$907.75	$689.89K	0.2%	340.86K	340.10K
Ordinary Shares Direct	6/1/2026	S · Sale	−853.00	$909.18	$775.53K	0.3%	340.10K	339.25K
Ordinary Shares Direct	6/1/2026	S · Sale	−600.00	$910.15	$546.09K	0.2%	339.25K	338.65K
Ordinary Shares Direct	6/1/2026	S · Sale	−480.00	$911.03	$437.30K	0.1%	338.65K	338.17K
Ordinary Shares Direct	6/1/2026	S · Sale	−320.00	$912.22	$291.91K	0.1%	338.17K	337.85K
Ordinary Shares Direct	6/1/2026	S · Sale	−280.00	$914.61	$256.09K	0.1%	337.85K	337.57K
Ordinary Shares Direct	6/1/2026	S · Sale	−200.00	$915.52	$183.10K	0.1%	337.57K	337.37K
Total			−2.22K		-$13.95M

Derivative Transactions1

NQ Options

Direct

M · Option Exercise

Converts to

Ordinary Shares

14K shares

−14K

Strike price

46.23

Held after

139.10K

Exercisable

—

6/1/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
NQ Options Direct	Ordinary Shares14K shares	6/1/2026	M · Option Exercise	−14K	46.23	—	139.10K