ROMANO GIANLUCA (EVP & CFO) sold 57.3% of their position (45.90K shares) of SEAGATE TECHNOLOGY HOLDINGS PLC on the open market

Open‑market sale worth $38.10M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 24 sales

ROMANO GIANLUCA

Filed: 9/15/2026ACC: 0001137789-26-000240

InsiderROMANO GIANLUCACIK 1764650

→

IssuerSEAGATE TECHNOLOGY HOLDINGS PLCCIK 1137789

Officer· EVP & CFO

Since Jan 2019

-45.90K

Net shares

Net seller

$38.10M

Total sold

Open market trades

0B · 24S

Total transactions

50.50K acquired · 96.40K disposed

Non-Derivative Transactions28

Ordinary Shares

Direct

M · Option Exercise

+8.52K

Price / share

$68.83

Trade value

$586.23K

% of position

28.8%

9/11/2026

29.62K→38.14K

Ordinary Shares

Direct

M · Option Exercise

+15.07K

Price / share

$64.31

Trade value

$968.96K

% of position

39.5%

9/11/2026

38.14K→53.20K

Ordinary Shares

Direct

M · Option Exercise

+13.47K

Price / share

$101.34

Trade value

$1.37M

% of position

25.3%

9/11/2026

53.20K→66.68K

Ordinary Shares

Direct

M · Option Exercise

+13.44K

Price / share

$158.40

Trade value

$2.13M

% of position

20.2%

9/11/2026

66.68K→80.12K

Ordinary Shares

Direct

S · Sale

−1.04K

Price / share

$819.39

Trade value

$852.16K

% of position

1.3%

9/11/2026

80.12K→79.08K

Ordinary Shares

Direct

S · Sale

−1.32K

Price / share

$820.54

Trade value

$1.08M

% of position

1.7%

9/11/2026

79.08K→77.76K

Ordinary Shares

Direct

S · Sale

−1.55K

Price / share

$821.42

Trade value

$1.27M

% of position

2.0%

9/11/2026

77.76K→76.21K

Ordinary Shares

Direct

S · Sale

−1.69K

Price / share

$822.50

Trade value

$1.39M

% of position

2.2%

9/11/2026

76.21K→74.52K

Ordinary Shares

Direct

S · Sale

−880.00

Price / share

$823.72

Trade value

$724.87K

% of position

1.2%

9/11/2026

74.52K→73.64K

Ordinary Shares

Direct

S · Sale

−1.40K

Price / share

$824.60

Trade value

$1.15M

% of position

1.9%

9/11/2026

73.64K→72.24K

Ordinary Shares

Direct

S · Sale

−800.00

Price / share

$825.65

Trade value

$660.52K

% of position

1.1%

9/11/2026

72.24K→71.44K

Ordinary Shares

Direct

S · Sale

−1.84K

Price / share

$826.72

Trade value

$1.52M

% of position

2.6%

9/11/2026

71.44K→69.60K

Ordinary Shares

Direct

S · Sale

−1.73K

Price / share

$827.72

Trade value

$1.43M

% of position

2.5%

9/11/2026

69.60K→67.87K

Ordinary Shares

Direct

S · Sale

−3.32K

Price / share

$828.84

Trade value

$2.75M

% of position

4.9%

9/11/2026

67.87K→64.55K

Ordinary Shares

Direct

S · Sale

−5.59K

Price / share

$829.77

Trade value

$4.64M

% of position

8.7%

9/11/2026

64.55K→58.96K

Ordinary Shares

Direct

S · Sale

−7.57K

Price / share

$830.74

Trade value

$6.29M

% of position

12.8%

9/11/2026

58.96K→51.39K

Ordinary Shares

Direct

S · Sale

−4.59K

Price / share

$831.71

Trade value

$3.82M

% of position

8.9%

9/11/2026

51.39K→46.80K

Ordinary Shares

Direct

S · Sale

−4.22K

Price / share

$832.68

Trade value

$3.51M

% of position

9.0%

9/11/2026

46.80K→42.58K

Ordinary Shares

Direct

S · Sale

−2.08K

Price / share

$833.67

Trade value

$1.73M

% of position

4.9%

9/11/2026

42.58K→40.50K

Ordinary Shares

Direct

S · Sale

−1.44K

Price / share

$834.80

Trade value

$1.20M

% of position

3.6%

9/11/2026

40.50K→39.06K

Ordinary Shares

Direct

S · Sale

−1.32K

Price / share

$835.67

Trade value

$1.10M

% of position

3.4%

9/11/2026

39.06K→37.74K

Ordinary Shares

Direct

S · Sale

−480.00

Price / share

$836.92

Trade value

$401.72K

% of position

1.3%

9/11/2026

37.74K→37.26K

Ordinary Shares

Direct

S · Sale

−200.00

Price / share

$838.10

Trade value

$167.62K

% of position

0.5%

9/11/2026

37.26K→37.06K

Ordinary Shares

Direct

S · Sale

−880.00

Price / share

$839.15

Trade value

$738.45K

% of position

2.4%

9/11/2026

37.06K→36.18K

Ordinary Shares

Direct

S · Sale

−1K

Price / share

$840.12

Trade value

$840.12K

% of position

2.8%

9/11/2026

36.18K→35.18K

Ordinary Shares

Direct

S · Sale

−320.00

Price / share

$841.05

Trade value

$269.14K

% of position

0.9%

9/11/2026

35.18K→34.86K

Ordinary Shares

Direct

S · Sale

−280.00

Price / share

$842.23

Trade value

$235.82K

% of position

0.8%

9/11/2026

34.86K→34.58K

Ordinary Shares

Direct

S · Sale

−360.00

Price / share

$843.55

Trade value

$303.68K

% of position

1.0%

9/11/2026

34.58K→34.22K

Total

Net shares

+4.60K

Net value

-$33.05M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Ordinary Shares Direct	9/11/2026	M · Option Exercise	+8.52K	$68.83	$586.23K	28.8%	29.62K	38.14K
Ordinary Shares Direct	9/11/2026	M · Option Exercise	+15.07K	$64.31	$968.96K	39.5%	38.14K	53.20K
Ordinary Shares Direct	9/11/2026	M · Option Exercise	+13.47K	$101.34	$1.37M	25.3%	53.20K	66.68K
Ordinary Shares Direct	9/11/2026	M · Option Exercise	+13.44K	$158.40	$2.13M	20.2%	66.68K	80.12K
Ordinary Shares Direct	9/11/2026	S · Sale	−1.04K	$819.39	$852.16K	1.3%	80.12K	79.08K
Ordinary Shares Direct	9/11/2026	S · Sale	−1.32K	$820.54	$1.08M	1.7%	79.08K	77.76K
Ordinary Shares Direct	9/11/2026	S · Sale	−1.55K	$821.42	$1.27M	2.0%	77.76K	76.21K
Ordinary Shares Direct	9/11/2026	S · Sale	−1.69K	$822.50	$1.39M	2.2%	76.21K	74.52K
Ordinary Shares Direct	9/11/2026	S · Sale	−880.00	$823.72	$724.87K	1.2%	74.52K	73.64K
Ordinary Shares Direct	9/11/2026	S · Sale	−1.40K	$824.60	$1.15M	1.9%	73.64K	72.24K
Ordinary Shares Direct	9/11/2026	S · Sale	−800.00	$825.65	$660.52K	1.1%	72.24K	71.44K
Ordinary Shares Direct	9/11/2026	S · Sale	−1.84K	$826.72	$1.52M	2.6%	71.44K	69.60K
Ordinary Shares Direct	9/11/2026	S · Sale	−1.73K	$827.72	$1.43M	2.5%	69.60K	67.87K
Ordinary Shares Direct	9/11/2026	S · Sale	−3.32K	$828.84	$2.75M	4.9%	67.87K	64.55K
Ordinary Shares Direct	9/11/2026	S · Sale	−5.59K	$829.77	$4.64M	8.7%	64.55K	58.96K
Ordinary Shares Direct	9/11/2026	S · Sale	−7.57K	$830.74	$6.29M	12.8%	58.96K	51.39K
Ordinary Shares Direct	9/11/2026	S · Sale	−4.59K	$831.71	$3.82M	8.9%	51.39K	46.80K
Ordinary Shares Direct	9/11/2026	S · Sale	−4.22K	$832.68	$3.51M	9.0%	46.80K	42.58K
Ordinary Shares Direct	9/11/2026	S · Sale	−2.08K	$833.67	$1.73M	4.9%	42.58K	40.50K
Ordinary Shares Direct	9/11/2026	S · Sale	−1.44K	$834.80	$1.20M	3.6%	40.50K	39.06K
Ordinary Shares Direct	9/11/2026	S · Sale	−1.32K	$835.67	$1.10M	3.4%	39.06K	37.74K
Ordinary Shares Direct	9/11/2026	S · Sale	−480.00	$836.92	$401.72K	1.3%	37.74K	37.26K
Ordinary Shares Direct	9/11/2026	S · Sale	−200.00	$838.10	$167.62K	0.5%	37.26K	37.06K
Ordinary Shares Direct	9/11/2026	S · Sale	−880.00	$839.15	$738.45K	2.4%	37.06K	36.18K
Ordinary Shares Direct	9/11/2026	S · Sale	−1K	$840.12	$840.12K	2.8%	36.18K	35.18K
Ordinary Shares Direct	9/11/2026	S · Sale	−320.00	$841.05	$269.14K	0.9%	35.18K	34.86K
Ordinary Shares Direct	9/11/2026	S · Sale	−280.00	$842.23	$235.82K	0.8%	34.86K	34.58K
Ordinary Shares Direct	9/11/2026	S · Sale	−360.00	$843.55	$303.68K	1.0%	34.58K	34.22K
Total			+4.60K		-$33.05M

Derivative Transactions4

NQ Options

Direct

M · Option Exercise

Converts to

Ordinary Shares

8.52K shares

−8.52K

Strike price

68.83

Held after

0.00

Exercisable

—

9/11/2026

NQ Options

Direct

M · Option Exercise

Converts to

Ordinary Shares

15.07K shares

−15.07K

Strike price

64.31

Held after

18.08K

Exercisable

—

9/11/2026

NQ Options

Direct

M · Option Exercise

Converts to

Ordinary Shares

13.47K shares

−13.47K

Strike price

101.34

Held after

32.34K

Exercisable

—

9/11/2026

NQ Stock Option

Direct

M · Option Exercise

Converts to

Ordinary Shares

13.44K shares

−13.44K

Strike price

158.40

Held after

40.32K

Exercisable

—

9/11/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
NQ Options Direct	Ordinary Shares8.52K shares	9/11/2026	M · Option Exercise	−8.52K	68.83	—	0.00
NQ Options Direct	Ordinary Shares15.07K shares	9/11/2026	M · Option Exercise	−15.07K	64.31	—	18.08K
NQ Options Direct	Ordinary Shares13.47K shares	9/11/2026	M · Option Exercise	−13.47K	101.34	—	32.34K
NQ Stock Option Direct	Ordinary Shares13.44K shares	9/11/2026	M · Option Exercise	−13.44K	158.40	—	40.32K