TEH BAN SENG (SVP, Sales) sold 28.6% of their position (6.05K shares) of SEAGATE TECHNOLOGY HOLDINGS PLC on the open market

Open‑market sale worth $5.10M — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 19 sales

TEH BAN SENG

Filed: 8/24/2026ACC: 0001137789-26-000187

InsiderTEH BAN SENGCIK 1801425

→

IssuerSEAGATE TECHNOLOGY HOLDINGS PLCCIK 1137789

Officer· SVP, Sales

Since Jan 2020

+2.27K

Net shares

Net buyer

$5.10M

Total sold

Open market trades

0B · 19S

Total transactions

26.51K acquired · 24.24K disposed

Non-Derivative Transactions23

Ordinary Shares

Direct

M · Option Exercise

+2.27K

Price / share

—

Trade value

—

% of position

77.3%

8/20/2026

2.93K→5.20K

Ordinary Shares

Direct

M · Option Exercise

+7.59K

Price / share

—

Trade value

—

% of position

146.1%

8/20/2026

5.20K→12.79K

Ordinary Shares

Direct

M · Option Exercise

+2.28K

Price / share

—

Trade value

—

% of position

17.8%

8/20/2026

12.79K→15.07K

Ordinary Shares

Direct

M · Option Exercise

+6.05K

Price / share

$158.40

Trade value

$958K

% of position

40.1%

8/20/2026

15.07K→21.12K

Ordinary Shares

Direct

S · Sale

−240.00

Price / share

$829.77

Trade value

$199.15K

% of position

1.1%

8/20/2026

21.12K→20.88K

Ordinary Shares

Direct

S · Sale

−80.00

Price / share

$830.18

Trade value

$66.41K

% of position

0.4%

8/20/2026

20.88K→20.80K

Ordinary Shares

Direct

S · Sale

−240.00

Price / share

$831.85

Trade value

$199.64K

% of position

1.2%

8/20/2026

20.80K→20.56K

Ordinary Shares

Direct

S · Sale

−280.00

Price / share

$833.71

Trade value

$233.44K

% of position

1.4%

8/20/2026

20.56K→20.28K

Ordinary Shares

Direct

S · Sale

−240.00

Price / share

$834.59

Trade value

$200.30K

% of position

1.2%

8/20/2026

20.28K→20.04K

Ordinary Shares

Direct

S · Sale

−682.00

Price / share

$835.64

Trade value

$569.90K

% of position

3.4%

8/20/2026

20.04K→19.36K

Ordinary Shares

Direct

S · Sale

−440.00

Price / share

$837.22

Trade value

$368.38K

% of position

2.3%

8/20/2026

19.36K→18.92K

Ordinary Shares

Direct

S · Sale

−120.00

Price / share

$838.41

Trade value

$100.61K

% of position

0.6%

8/20/2026

18.92K→18.80K

Ordinary Shares

Direct

S · Sale

−80.00

Price / share

$839.94

Trade value

$67.19K

% of position

0.4%

8/20/2026

18.80K→18.72K

Ordinary Shares

Direct

S · Sale

−160.00

Price / share

$841.51

Trade value

$134.64K

% of position

0.9%

8/20/2026

18.72K→18.56K

Ordinary Shares

Direct

S · Sale

−120.00

Price / share

$843.24

Trade value

$101.19K

% of position

0.6%

8/20/2026

18.56K→18.44K

Ordinary Shares

Direct

S · Sale

−40.00

Price / share

$843.86

Trade value

$33.75K

% of position

0.2%

8/20/2026

18.44K→18.40K

Ordinary Shares

Direct

S · Sale

−926.00

Price / share

$845.03

Trade value

$782.50K

% of position

5.0%

8/20/2026

18.40K→17.47K

Ordinary Shares

Direct

S · Sale

−320.00

Price / share

$846.31

Trade value

$270.82K

% of position

1.8%

8/20/2026

17.47K→17.15K

Ordinary Shares

Direct

S · Sale

−160.00

Price / share

$847.41

Trade value

$135.59K

% of position

0.9%

8/20/2026

17.15K→16.99K

Ordinary Shares

Direct

S · Sale

−400.00

Price / share

$849.27

Trade value

$339.71K

% of position

2.4%

8/20/2026

16.99K→16.59K

Ordinary Shares

Direct

S · Sale

−280.00

Price / share

$850.41

Trade value

$238.11K

% of position

1.7%

8/20/2026

16.59K→16.31K

Ordinary Shares

Direct

S · Sale

−630.00

Price / share

$852.05

Trade value

$536.79K

% of position

3.9%

8/20/2026

16.31K→15.68K

Ordinary Shares

Direct

S · Sale

−610.00

Price / share

$852.66

Trade value

$520.13K

% of position

3.9%

8/20/2026

15.68K→15.07K

Total

Net shares

+12.14K

Net value

-$4.14M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Ordinary Shares Direct	8/20/2026	M · Option Exercise	+2.27K	—	—	77.3%	2.93K	5.20K
Ordinary Shares Direct	8/20/2026	M · Option Exercise	+7.59K	—	—	146.1%	5.20K	12.79K
Ordinary Shares Direct	8/20/2026	M · Option Exercise	+2.28K	—	—	17.8%	12.79K	15.07K
Ordinary Shares Direct	8/20/2026	M · Option Exercise	+6.05K	$158.40	$958K	40.1%	15.07K	21.12K
Ordinary Shares Direct	8/20/2026	S · Sale	−240.00	$829.77	$199.15K	1.1%	21.12K	20.88K
Ordinary Shares Direct	8/20/2026	S · Sale	−80.00	$830.18	$66.41K	0.4%	20.88K	20.80K
Ordinary Shares Direct	8/20/2026	S · Sale	−240.00	$831.85	$199.64K	1.2%	20.80K	20.56K
Ordinary Shares Direct	8/20/2026	S · Sale	−280.00	$833.71	$233.44K	1.4%	20.56K	20.28K
Ordinary Shares Direct	8/20/2026	S · Sale	−240.00	$834.59	$200.30K	1.2%	20.28K	20.04K
Ordinary Shares Direct	8/20/2026	S · Sale	−682.00	$835.64	$569.90K	3.4%	20.04K	19.36K
Ordinary Shares Direct	8/20/2026	S · Sale	−440.00	$837.22	$368.38K	2.3%	19.36K	18.92K
Ordinary Shares Direct	8/20/2026	S · Sale	−120.00	$838.41	$100.61K	0.6%	18.92K	18.80K
Ordinary Shares Direct	8/20/2026	S · Sale	−80.00	$839.94	$67.19K	0.4%	18.80K	18.72K
Ordinary Shares Direct	8/20/2026	S · Sale	−160.00	$841.51	$134.64K	0.9%	18.72K	18.56K
Ordinary Shares Direct	8/20/2026	S · Sale	−120.00	$843.24	$101.19K	0.6%	18.56K	18.44K
Ordinary Shares Direct	8/20/2026	S · Sale	−40.00	$843.86	$33.75K	0.2%	18.44K	18.40K
Ordinary Shares Direct	8/20/2026	S · Sale	−926.00	$845.03	$782.50K	5.0%	18.40K	17.47K
Ordinary Shares Direct	8/20/2026	S · Sale	−320.00	$846.31	$270.82K	1.8%	17.47K	17.15K
Ordinary Shares Direct	8/20/2026	S · Sale	−160.00	$847.41	$135.59K	0.9%	17.15K	16.99K
Ordinary Shares Direct	8/20/2026	S · Sale	−400.00	$849.27	$339.71K	2.4%	16.99K	16.59K
Ordinary Shares Direct	8/20/2026	S · Sale	−280.00	$850.41	$238.11K	1.7%	16.59K	16.31K
Ordinary Shares Direct	8/20/2026	S · Sale	−630.00	$852.05	$536.79K	3.9%	16.31K	15.68K
Ordinary Shares Direct	8/20/2026	S · Sale	−610.00	$852.66	$520.13K	3.9%	15.68K	15.07K
Total			+12.14K		-$4.14M

Derivative Transactions8

Restricted Share Unit

Direct

M · Option Exercise

Converts to

Ordinary Shares

2.27K shares

−2.27K

Strike price

Held after

6.80K

Exercisable

—

8/20/2026

Restricted Share Unit

Direct

M · Option Exercise

Converts to

Ordinary Shares

7.59K shares

−7.59K

Strike price

Held after

0.00

Exercisable

—

8/20/2026

Restricted Share Unit

Direct

M · Option Exercise

Converts to

Ordinary Shares

2.28K shares

−2.28K

Strike price

Held after

0.00

Exercisable

—

8/20/2026

NQ Stock Option

Direct

M · Option Exercise

Converts to

Ordinary Shares

6.05K shares

−6.05K

Strike price

158.40

Held after

18.14K

Exercisable

—

8/20/2026

Restricted Share Unit

Direct

A · Award

Converts to

Ordinary Shares

1.77K shares

+1.77K

Strike price

Held after

1.77K

Exercisable

—

8/20/2026

Restricted Share Unit

Direct

A · Award

Converts to

Ordinary Shares

417.00 shares

+417.00

Strike price

Held after

417.00

Exercisable

—

8/20/2026

Restricted Share Unit

Direct

A · Award

Converts to

Ordinary Shares

1.39K shares

+1.39K

Strike price

Held after

1.39K

Exercisable

—

8/20/2026

NQ Stock Option

Direct

A · Award

Converts to

Ordinary Shares

4.74K shares

+4.74K

Strike price

850.24

Held after

4.74K

Exercisable

—

8/20/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Share Unit Direct	Ordinary Shares2.27K shares	8/20/2026	M · Option Exercise	−2.27K	0	—	6.80K
Restricted Share Unit Direct	Ordinary Shares7.59K shares	8/20/2026	M · Option Exercise	−7.59K	0	—	0.00
Restricted Share Unit Direct	Ordinary Shares2.28K shares	8/20/2026	M · Option Exercise	−2.28K	0	—	0.00
NQ Stock Option Direct	Ordinary Shares6.05K shares	8/20/2026	M · Option Exercise	−6.05K	158.40	—	18.14K
Restricted Share Unit Direct	Ordinary Shares1.77K shares	8/20/2026	A · Award	+1.77K	0	—	1.77K
Restricted Share Unit Direct	Ordinary Shares417.00 shares	8/20/2026	A · Award	+417.00	0	—	417.00
Restricted Share Unit Direct	Ordinary Shares1.39K shares	8/20/2026	A · Award	+1.39K	0	—	1.39K
NQ Stock Option Direct	Ordinary Shares4.74K shares	8/20/2026	A · Award	+4.74K	850.24	—	4.74K