Seagate Technology (STX) — insider trading
Information Technology · NASDAQ
Seagate Technology (STX) has 752 reported SEC Form 4 insider transactions in our data, including 96 open-market sales among the most recent 100 (latest 2026-10-01).
Recent Form 4 transactions
Showing the 100 most recent of 752 recorded transactions. See all on SEC EDGAR →
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 962 | $945.97 | $910.0K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 440 | $944.81 | $415.7K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 280 | $943.21 | $264.1K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 40 | $941.22 | $37.6K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 80 | $940.20 | $75.2K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 720 | $939.27 | $676.3K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 640 | $938.32 | $600.5K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 579 | $937.33 | $542.7K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 759 | $936.43 | $710.8K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 640 | $935.15 | $598.5K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 822 | $934.35 | $768.0K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 840 | $933.28 | $784.0K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,320 | $932.04 | $1.23M | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,665 | $930.99 | $1.55M | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 855 | $930.03 | $795.2K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 360 | $929.01 | $334.4K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Option exercise / conversion (derivative) | 14,000 | — | $0 | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 640 | $927.90 | $593.9K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 480 | $926.78 | $444.9K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,080 | $925.88 | $1000.0K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 640 | $924.72 | $591.8K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 760 | $923.78 | $702.1K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 800 | $922.66 | $738.1K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 930 | $921.64 | $857.1K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 630 | $920.62 | $580.0K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 840 | $919.56 | $772.4K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 920 | $918.49 | $845.0K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 400 | $917.22 | $366.9K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 480 | $916.10 | $439.7K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 960 | $915.01 | $878.4K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 904 | $913.94 | $826.2K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 696 | $913.08 | $635.5K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,146 | $912.04 | $1.05M | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 840 | $910.69 | $765.0K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 307 | $909.84 | $279.3K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,027 | $908.58 | $933.1K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 560 | $907.43 | $508.2K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 601 | $906.42 | $544.8K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 480 | $905.38 | $434.6K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 480 | $904.33 | $434.1K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 696 | $903.36 | $628.7K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 384 | $902.55 | $346.6K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 440 | $901.49 | $396.7K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 517 | $900.46 | $465.5K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 360 | $898.10 | $323.3K | Form 4 |
| 2026-10-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Option exercise / conversion | 14,000 | $46.23 | $647.2K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Option exercise / conversion (derivative) | 915 | — | $0 | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 40 | $902.07 | $36.1K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 40 | $899.53 | $36.0K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 80 | $897.28 | $71.8K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 915 | $894.27 | $818.3K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 40 | $893.15 | $35.7K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 40 | $890.54 | $35.6K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 120 | $887.92 | $106.5K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 40 | $886.27 | $35.5K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 320 | $883.08 | $282.6K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 200 | $881.90 | $176.4K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 741 | $881.16 | $652.9K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 200 | $879.71 | $175.9K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 280 | $878.38 | $245.9K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 418 | $877.36 | $366.7K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 760 | $876.54 | $666.2K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 974 | $875.35 | $852.6K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 986 | $874.50 | $862.3K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 1,040 | $873.49 | $908.4K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 1,000 | $872.42 | $872.4K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 520 | $871.56 | $453.2K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 200 | $870.28 | $174.1K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 80 | $869.21 | $69.5K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 160 | $868.11 | $138.9K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 40 | $865.80 | $34.6K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 80 | $865.11 | $69.2K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 40 | $863.66 | $34.5K | Form 4 |
| 2026-09-21 | Morris John Christopher | Officer (EVP & CTO) | Option exercise / conversion | 915 | $158.40 | $144.9K | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 2,480 | $800.47 | $1.99M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 400 | $799.03 | $319.6K | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 530 | $797.97 | $422.9K | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 1,587 | $796.90 | $1.26M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 2,166 | $795.95 | $1.72M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 1,280 | $794.72 | $1.02M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 560 | $791.36 | $443.2K | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 1,760 | $789.84 | $1.39M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 280 | $788.43 | $220.8K | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 120 | $787.26 | $94.5K | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 1,040 | $786.14 | $817.6K | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 1,000 | $784.45 | $784.4K | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 1,760 | $783.28 | $1.38M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 4,147 | $782.56 | $3.25M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 1,600 | $781.35 | $1.25M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 2,453 | $780.29 | $1.91M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 6,682 | $779.27 | $5.21M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 7,259 | $778.35 | $5.65M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 3,987 | $777.22 | $3.10M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 3,242 | $776.20 | $2.52M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 2,315 | $775.01 | $1.79M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 1,717 | $774.01 | $1.33M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 3,451 | $772.65 | $2.67M | Form 4 |
| 2026-09-15 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 914 | $771.38 | $705.0K | Form 4 |
| 2026-09-15 | Romano Gianluca | Officer (EVP & CFO) | Open-market sale | 49,984 | $772.16 | $38.60M | Form 4 |
| 2026-09-15 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 15,466 | $772.15 | $11.94M | Form 4 |
Ask the chat about STX's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: Seagate Technology (STX).
Last updated 2026-10-01 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.