Seagate Technology Holdings PLC (STX)
Nasdaq: STX · Computer Storage Devices · Singapore, SG · filing with the SEC since 2001
Grade5.8
◀ Past 2.3● Present 6.9▶ Future 7.7
Who owns Seagate Technology Holdings PLC
As filed with the SECHolders of 5% or more
2
Vanguard Capital Management holds 7.48% of Common Stock, as its SCHEDULE 13G filed Apr 30, 2026 says.
Directors and officers
17
report now, of 46 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Vanguard Capital Management
SCHEDULE 13G · filed Apr 30, 2026 · Common Stock
Blackrock, Inc.
SCHEDULE 13G/A · filed Apr 23, 2025 · Common Stock
JPMorgan Chase & Co.
SCHEDULE 13G/A · filed Nov 4, 2025 · Ordinary Shares, par value $0.00001 per share · reported falling below 5%, from 5.6% in Oct 31, 2025
Vanguard Portfolio Management
SCHEDULE 13G/A · filed Jul 31, 2026 · Common Stock · reported falling below 5%, from 5.08% in Apr 29, 2026
Capital Research Global Investors
SCHEDULE 13G/A · filed Aug 13, 2025 · Common Stock · reported falling below 5%, from 7.4% in Feb 13, 2025
Sanders Capital, LLC
SCHEDULE 13G/A · filed Aug 5, 2026 · Common Stock · reported falling below 5%, from 5.98% in Apr 16, 2026
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%, from 13.2% in Jan 31, 2025
What STX reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Intevac, Inc.
A company bought · acquisition · Mar 2025 · owns, named in the 10-K filed Aug 4, 2026
53 subsidiaries in 25 countries, from the list filed with the 10-K filed Aug 4, 2026.
Insider tradesForm 4
767sales
0purchases
724sales on a scheduled plan
11people selling
$607Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 3, 2025 to Nov 3, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 3, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window11 of 46 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Mosley William D | CEO | 371 | $322M | 360 | 0 | $0 |
| Romano Gianluca | EVP & CFO | 174 | $146M | 165 | 0 | $0 |
| Teh Ban Seng | EVP & Chief Commercial Officer | 106 | $88.9M | 100 | 0 | $0 |
| Morris John Christopher | EVP & CTO | 80 | $32.3M | 74 | 0 | $0 |
| Lee James Ci | EVP & CLO | 38 | $12.9M | 33 | 0 | $0 |
| Chong Kian Fatt | EVP Global Operations | 1 | $2.4M | 0 | 0 | $0 |
| Arumugavelu Shankar | director | 2 | $2.4M | 0 | 0 | $0 |
| Conyers Yolanda Lee | director | 4 | $1.8M | 4 | 0 | $0 |
| Tilenius Stephanie | director | 3 | $1.8M | 0 | 0 | $0 |
| Bhatt Prat | director | 1 | $900,000 | 1 | 0 | $0 |
| Geldmacher Jay L | director | 1 | $400,000 | 0 | 0 | $0 |