STX
Seagate Technology PLC
NASDAQ: STX · TECHNOLOGY · COMPUTER HARDWARE
$697.97
+4.51% today
Updated 2026-10-28
Market cap
$145.31B
P/E ratio
45.97
P/S ratio
11.92x
EPS (TTM)
$13.90
Dividend yield
0.43%
52W range
$208 – $1,143
Volume
4.5M
Seagate Technology PLC (STX) Insider transactions
Net insider activity
Net selling (185,020 shares)
Buy transactions
11
Sell transactions
54
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | M | 14,000 | $46.23 | $647220.00 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 1,665 | $930.99 | $1.55M |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 1,320 | $932.04 | $1.23M |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 1,146 | $912.04 | $1.05M |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 1,080 | $925.88 | $999953.21 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 1,027 | $908.58 | $933109.71 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 962 | $945.97 | $910022.76 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 960 | $915.01 | $878407.97 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 930 | $921.64 | $857120.55 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 920 | $918.49 | $845012.82 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 904 | $913.94 | $826203.39 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 855 | $930.03 | $795178.56 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 840 | $910.69 | $764982.37 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 822 | $934.35 | $768036.77 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 800 | $922.66 | $738126.00 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 760 | $923.78 | $702074.40 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 759 | $936.43 | $710750.29 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 720 | $939.27 | $676274.83 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 696 | $913.08 | $635502.57 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 640 | $935.15 | $598495.62 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 630 | $920.62 | $579988.08 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 601 | $906.42 | $544760.34 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 579 | $937.33 | $542713.20 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 560 | $907.43 | $508161.98 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 517 | $900.46 | $465538.75 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 480 | $904.33 | $434079.60 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 440 | $944.81 | $415714.82 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 400 | $917.22 | $366888.80 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 384 | $902.55 | $346578.55 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 360 | $898.10 | $323314.42 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 307 | $909.84 | $279322.23 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 280 | $943.21 | $264099.61 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 80 | $940.20 | $75216.00 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | S | 40 | $941.22 | $37648.80 |
| 2026-10-01 | MOSLEY, WILLIAM D | Director, CEO | M | 14,000 | — | — |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 1,040 | $873.49 | $908431.06 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 1,000 | $872.42 | $872424.40 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 986 | $874.50 | $862260.75 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 974 | $875.35 | $852589.93 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Buy | 915 | $158.40 | $144936.00 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 760 | $876.54 | $666173.97 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 741 | $881.16 | $652938.37 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 520 | $871.56 | $453211.98 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 418 | $877.36 | $366738.15 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 320 | $883.08 | $282584.80 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 280 | $878.38 | $245945.20 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 200 | $881.90 | $176380.40 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 160 | $868.11 | $138897.20 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 120 | $887.92 | $106550.00 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 80 | $869.21 | $69536.64 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 40 | $863.66 | $34546.40 |
| 2026-09-21 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 915 | — | — |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 7,259 | $778.35 | $5.65M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 6,682 | $779.27 | $5.21M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 4,147 | $782.56 | $3.25M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 3,987 | $777.22 | $3.10M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 3,451 | $772.65 | $2.67M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 3,242 | $776.20 | $2.52M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 2,480 | $800.47 | $1.99M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 2,453 | $780.29 | $1.91M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 2,315 | $775.01 | $1.79M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 2,166 | $795.95 | $1.72M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 1,760 | $789.84 | $1.39M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 1,717 | $774.01 | $1.33M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 1,600 | $781.35 | $1.25M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 1,587 | $796.90 | $1.26M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 1,280 | $794.72 | $1.02M |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 1,040 | $786.14 | $817587.99 |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 1,000 | $784.45 | $784446.40 |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 914 | $771.38 | $705037.02 |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 560 | $791.36 | $443164.01 |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 530 | $797.97 | $422924.90 |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 400 | $799.03 | $319610.80 |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 280 | $788.43 | $220760.40 |
| 2026-09-15 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 120 | $787.26 | $94470.80 |
| 2026-09-15 | ROMANO, GIANLUCA | EVP & CFO | Sale | 49,984 | $772.16 | $38.60M |
| 2026-09-15 | MOSLEY, WILLIAM D | Director, CEO | Sale | 97,889 | $772.14 | $75.58M |
| 2026-09-15 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 15,466 | $772.15 | $11.94M |
| 2026-09-14 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 52,730 | — | — |
| 2026-09-14 | TEH, BAN SENG | EVP & Chief Commercial Officer | Buy | 52,730 | — | — |
| 2026-09-14 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 989 | $779.00 | $770431.00 |
| 2026-09-14 | ROMANO, GIANLUCA | EVP & CFO | Sale | 90,380 | — | — |
| 2026-09-14 | ROMANO, GIANLUCA | EVP & CFO | Buy | 90,380 | — | — |
| 2026-09-14 | ROMANO, GIANLUCA | EVP & CFO | Sale | 955 | $781.24 | $746086.97 |
| 2026-09-14 | MOSLEY, WILLIAM D | Director, CEO | Sale | 177,000 | — | — |
| 2026-09-14 | MOSLEY, WILLIAM D | Director, CEO | Buy | 177,000 | — | — |
| 2026-09-14 | MOSLEY, WILLIAM D | Director, CEO | Sale | 1,870 | $781.23 | $1.46M |
| 2026-09-14 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 30,130 | — | — |
| 2026-09-14 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Buy | 30,130 | — | — |
| 2026-09-14 | MORRIS, JOHN CHRISTOPHER | EVP & CTO | Sale | 493 | $781.23 | $385147.62 |
| 2026-09-14 | CHONG, KIAN FATT | EVP Global Operations | Sale | 14,470 | — | — |
| 2026-09-14 | CHONG, KIAN FATT | EVP Global Operations | Buy | 14,470 | — | — |
| 2026-09-11 | TEH, BAN SENG | EVP & Chief Commercial Officer | Sale | 989 | — | — |
| 2026-09-11 | TEH, BAN SENG | EVP & Chief Commercial Officer | Buy | 989 | — | — |
| 2026-09-11 | ROMANO, GIANLUCA | EVP & CFO | Sale | 1,695 | — | — |
| 2026-09-11 | ROMANO, GIANLUCA | EVP & CFO | Buy | 15,067 | $64.31 | $968958.77 |
| 2026-09-11 | ROMANO, GIANLUCA | EVP & CFO | Buy | 13,475 | $101.34 | $1.37M |
| 2026-09-11 | ROMANO, GIANLUCA | EVP & CFO | Buy | 13,439 | $158.40 | $2.13M |
| 2026-09-11 | ROMANO, GIANLUCA | EVP & CFO | Buy | 8,517 | $68.83 | $586225.11 |
| 2026-09-11 | ROMANO, GIANLUCA | EVP & CFO | Sale | 7,568 | $830.74 | $6.29M |
Frequently asked questions
Are STX insiders buying or selling?
Over the transactions on record, STX insiders have been net sellers, with about $182.32M in stock sold across 54 sales, against 5 open-market purchases.
Does insider selling at STX mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which STX insiders are selling the most?
Recent selling is concentrated in a few names. MOSLEY, WILLIAM D accounts for the largest share on record, with about $77.05M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.