There have been 50 recent insider transactions recorded for Seagate Technology Holdings plc (STX), including 5 buys and 45 sells. Total insider buying was valued at $2.74M and total insider selling at $35.31M.
Notable insiders with recent activity include Mosley William D, Morris John Christopher, Romano Gianluca. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — STX
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-04-01 |
Mosley William D |
CEO |
Informative Sell |
300 |
$427.97 |
$128.39K |
355,591 |
| 2026-03-19 |
Mosley William D |
CEO |
Informative Sell |
24,584 |
$406.77 |
$10M |
375,591 |
| 2026-03-13 |
Morris John Christopher |
EVP & CTO |
Informative Sell |
112 |
$377.44 |
$42.27K |
17,580 |
| 2026-03-11 |
Mosley William D |
CEO |
Option Exercise (Sell) |
3,319 |
- |
- |
19,914 |
| 2026-03-11 |
Romano Gianluca |
EVP & CFO |
Option Exercise (Sell) |
1,695 |
- |
- |
10,170 |
| 2026-03-11 |
Teh Ban Seng |
EVP & Chief Commercial Officer |
Option Exercise (Sell) |
989 |
- |
- |
5,934 |
| 2026-03-11 |
Chong Kian Fatt |
EVP Global Operations |
Option Exercise |
678 |
- |
- |
1,259 |
| 2026-03-11 |
Morris John Christopher |
EVP & CTO |
Option Exercise (Sell) |
942 |
- |
- |
5,652 |
| 2026-03-09 |
Mosley William D |
CEO |
Option Exercise (Sell) |
2,815 |
- |
- |
5,630 |
| 2026-03-09 |
Romano Gianluca |
EVP & CFO |
Option Exercise (Sell) |
958 |
- |
- |
1,918 |
| 2026-03-09 |
Teh Ban Seng |
EVP & Chief Commercial Officer |
Option Exercise (Sell) |
599 |
- |
- |
1,199 |
| 2026-03-09 |
Chong Kian Fatt |
EVP Global Operations |
Option Exercise |
202 |
- |
- |
202 |
| 2026-03-09 |
Morris John Christopher |
EVP & CTO |
Option Exercise (Sell) |
499 |
- |
- |
999 |
| 2026-03-02 |
Mosley William D |
CEO |
Informative Sell |
100 |
$407.66 |
$40.77K |
395,897 |
| 2026-03-02 |
Conyers Yolanda Lee |
Director |
Informative Sell |
750 |
$393.59 |
$295.19K |
4,851 |
| 2026-02-24 |
Morris John Christopher |
EVP & CTO |
Informative Sell |
240 |
$410.00 |
$98.4K |
16,566 |
| 2026-02-23 |
Chong Kian Fatt |
EVP Global Operations |
Informative Sell |
5,846 |
$416.48 |
$2.43M |
- |
| 2026-02-22 |
Romano Gianluca |
EVP & CFO |
Option Exercise (Sell) |
14,043 |
- |
- |
- |
| 2026-02-20 |
Mosley William D |
CEO |
Option Exercise (Sell) |
11,807 |
- |
- |
- |
| 2026-02-20 |
Romano Gianluca |
EVP & CFO |
Option Exercise (Sell) |
11,807 |
- |
- |
- |
| 2026-02-20 |
Teh Ban Seng |
EVP & Chief Commercial Officer |
Option Exercise (Sell) |
5,905 |
- |
- |
- |
| 2026-02-20 |
Chong Kian Fatt |
EVP Global Operations |
Option Exercise (Sell) |
4,427 |
- |
- |
- |
| 2025-06-16 |
Teh Ban Seng |
EVP & Chief Commercial Officer |
Informative Sell |
599 |
$130.00 |
$77.87K |
10,329 |
| 2025-06-11 |
Mosley William D |
Chief Executive Officer |
Option Exercise (Sell) |
3,318 |
- |
- |
29,871 |
| 2025-06-11 |
Romano Gianluca |
EVP & CFO |
Option Exercise (Sell) |
1,694 |
- |
- |
15,255 |
| 2025-06-11 |
Teh Ban Seng |
EVP & Chief Commercial Officer |
Option Exercise (Sell) |
988 |
- |
- |
8,901 |
| 2025-06-11 |
Chong Kian Fatt |
SVP, Global Operations |
Option Exercise |
678 |
- |
- |
879 |
| 2025-06-11 |
Morris John Christopher |
SVP & CTO |
Option Exercise (Sell) |
941 |
- |
- |
8,476 |
| 2025-06-09 |
Mosley William D |
Chief Executive Officer |
Option Exercise (Sell) |
54,347 |
$54.78 |
$2.98M |
- |
| 2025-06-09 |
Romano Gianluca |
EVP & CFO |
Option Exercise (Sell) |
958 |
- |
- |
4,792 |
| 2025-06-09 |
Teh Ban Seng |
EVP & Chief Commercial Officer |
Option Exercise (Sell) |
599 |
- |
- |
2,996 |
| 2025-06-09 |
Chong Kian Fatt |
SVP, Global Operations |
Option Exercise |
201 |
- |
- |
201 |
| 2025-06-09 |
Morris John Christopher |
SVP & CTO |
Option Exercise (Sell) |
499 |
- |
- |
2,496 |
| 2025-06-05 |
Tilenius Stephanie |
Director |
Informative Sell |
2,693 |
$128.04 |
$344.8K |
12,244 |
| 2025-06-04 |
Teh Ban Seng |
EVP & Chief Commercial Officer |
Option Exercise (Sell) |
28,120 |
$75.94 |
$2.14M |
- |
| 2025-06-03 |
Mosley William D |
Chief Executive Officer |
Option Exercise (Sell) |
50,000 |
$54.78 |
$2.74M |
54,347 |
| 2025-06-03 |
Mosley William D |
Chief Executive Officer |
Option Exercise |
50,000 |
$54.78 |
$2.74M |
515,677 |
| 2025-06-03 |
Teh Ban Seng |
EVP & Chief Commercial Officer |
Option Exercise (Sell) |
6,923 |
$68.83 |
$476.51K |
8,520 |
| 2025-06-02 |
Mosley William D |
Chief Executive Officer |
Informative Sell |
7,586 |
$119.40 |
$905.74K |
515,677 |
| 2025-06-02 |
Conyers Yolanda Lee |
Director |
Informative Sell |
750 |
$117.01 |
$87.76K |
5,055 |
| 2025-06-02 |
Cannon Michael R |
Director |
Informative Sell |
24,190 |
$119.00 |
$2.88M |
10,835 |
| 2025-05-30 |
Romano Gianluca |
EVP & CFO |
Option Exercise (Sell) |
26,816 |
$87.34 |
$2.34M |
5,364 |
| 2025-05-29 |
Romano Gianluca |
EVP & CFO |
Informative Sell |
9,100 |
$117.56 |
$1.07M |
38,082 |
| 2025-05-27 |
Teh Ban Seng |
EVP & Chief Commercial Officer |
Informative Sell |
4,201 |
$115.00 |
$483.12K |
22,999 |
| 2025-05-22 |
Bruner Judy |
Director |
Informative Sell |
10,446 |
$108.71 |
$1.14M |
12,268 |
| 2025-05-22 |
Mosley William D |
Chief Executive Officer |
Informative Sell |
400 |
$111.06 |
$44.42K |
485,677 |
| 2025-05-22 |
Chong Kian Fatt |
SVP, Global Operations |
Informative Sell |
6,410 |
$111.26 |
$713.15K |
- |
| 2025-05-22 |
Mosley William D |
Chief Executive Officer |
Option Exercise (Sell) |
50,000 |
$54.78 |
$2.74M |
104,347 |
| 2025-04-01 |
Mosley William D |
Chief Executive Officer |
Informative Sell |
13,200 |
$84.77 |
$1.12M |
555,677 |
| 2025-03-22 |
Teh Ban Seng |
EVP & Chief Commercial Officer |
Option Exercise (Sell) |
3,514 |
- |
- |
- |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
