Seagate Technology (STX) — insider trading
Information Technology
Seagate Technology (STX) has 88 reported SEC Form 4 insider transactions in our data, including 56 open-market sales among the most recent 88 (latest 2026-07-01).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Option exercise / conversion (derivative) | 14,000 | $0.00 | $0 | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 2,065 | $918.67 | $1.90M | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,762 | $917.67 | $1.62M | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,185 | $916.61 | $1.09M | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 2,308 | $915.65 | $2.11M | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 2,379 | $914.77 | $2.18M | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,596 | $913.65 | $1.46M | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 813 | $912.72 | $742.0K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 960 | $911.63 | $875.2K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 399 | $910.49 | $363.3K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 441 | $909.52 | $401.1K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 560 | $908.42 | $508.7K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 391 | $907.56 | $354.9K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 609 | $906.47 | $552.0K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 320 | $905.12 | $289.6K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 720 | $904.36 | $651.1K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 560 | $903.08 | $505.7K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 320 | $902.14 | $288.7K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 401 | $900.82 | $361.2K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 308 | $900.05 | $277.2K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 300 | $898.79 | $269.6K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 340 | $897.78 | $305.2K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 400 | $896.78 | $358.7K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 254 | $895.66 | $227.5K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 266 | $894.39 | $237.9K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 40 | $892.93 | $35.7K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 200 | $892.08 | $178.4K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 120 | $891.13 | $106.9K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 320 | $890.02 | $284.8K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 320 | $887.97 | $284.2K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Option exercise / conversion | 14,000 | $46.23 | $647.2K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 3 | $936.36 | $2.8K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 200 | $934.45 | $186.9K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 320 | $932.94 | $298.5K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 120 | $931.62 | $111.8K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 280 | $930.10 | $260.4K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 320 | $929.11 | $297.3K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 620 | $928.10 | $575.4K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 571 | $927.00 | $529.3K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,019 | $926.17 | $943.8K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 770 | $925.03 | $712.3K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,160 | $923.83 | $1.07M | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 720 | $922.68 | $664.3K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 880 | $921.80 | $811.2K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 880 | $920.57 | $810.1K | Form 4 |
| 2026-07-01 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,480 | $919.64 | $1.36M | Form 4 |
| 2026-06-12 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,768 | $880.19 | $1.56M | Form 4 |
| 2026-06-12 | Romano Gianluca | Officer (EVP & CFO) | Open-market sale | 903 | $880.19 | $795.0K | Form 4 |
| 2026-06-12 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 989 | $880.19 | $870.5K | Form 4 |
| 2026-06-12 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 898 | $880.19 | $790.4K | Form 4 |
| 2026-06-12 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 466 | $880.19 | $410.2K | Form 4 |
| 2026-06-11 | MOSLEY WILLIAM D | Director, Officer (CEO) | Option exercise / conversion (derivative) | 3,319 | $0.00 | $0 | Form 4 |
| 2026-06-11 | MOSLEY WILLIAM D | Director, Officer (CEO) | Option exercise / conversion | 3,319 | $0.00 | $0 | Form 4 |
| 2026-06-11 | Romano Gianluca | Officer (EVP & CFO) | Option exercise / conversion (derivative) | 1,695 | $0.00 | $0 | Form 4 |
| 2026-06-11 | Romano Gianluca | Officer (EVP & CFO) | Option exercise / conversion | 1,695 | $0.00 | $0 | Form 4 |
| 2026-06-11 | Chong Kian Fatt | Officer (EVP Global Operations) | Option exercise / conversion (derivative) | 678 | $0.00 | $0 | Form 4 |
| 2026-06-11 | Chong Kian Fatt | Officer (EVP Global Operations) | Option exercise / conversion | 678 | $0.00 | $0 | Form 4 |
| 2026-06-11 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Option exercise / conversion (derivative) | 989 | $0.00 | $0 | Form 4 |
| 2026-06-11 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Option exercise / conversion | 989 | $0.00 | $0 | Form 4 |
| 2026-06-11 | Morris John Christopher | Officer (EVP & CTO) | Option exercise / conversion (derivative) | 942 | $0.00 | $0 | Form 4 |
| 2026-06-11 | Morris John Christopher | Officer (EVP & CTO) | Option exercise / conversion | 942 | $0.00 | $0 | Form 4 |
| 2026-06-10 | Romano Gianluca | Officer (EVP & CFO) | Open-market sale | 827 | $821.77 | $679.6K | Form 4 |
| 2026-06-10 | Romano Gianluca | Officer (EVP & CFO) | Open-market sale | 524 | $821.73 | $430.2K | Form 4 |
| 2026-06-10 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,318 | $821.75 | $1.08M | Form 4 |
| 2026-06-10 | MOSLEY WILLIAM D | Director, Officer (CEO) | Open-market sale | 1,537 | $821.74 | $1.26M | Form 4 |
| 2026-06-10 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 320 | $821.65 | $262.7K | Form 4 |
| 2026-06-10 | Morris John Christopher | Officer (EVP & CTO) | Open-market sale | 254 | $821.66 | $208.7K | Form 4 |
| 2026-06-10 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Open-market sale | 663 | $821.86 | $544.9K | Form 4 |
| 2026-06-09 | Romano Gianluca | Officer (EVP & CFO) | Option exercise / conversion (derivative) | 1,515 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Romano Gianluca | Officer (EVP & CFO) | Option exercise / conversion (derivative) | 959 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Romano Gianluca | Officer (EVP & CFO) | Option exercise / conversion | 1,515 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Romano Gianluca | Officer (EVP & CFO) | Option exercise / conversion | 959 | $0.00 | $0 | Form 4 |
| 2026-06-09 | MOSLEY WILLIAM D | Director, Officer (CEO) | Option exercise / conversion (derivative) | 2,415 | $0.00 | $0 | Form 4 |
| 2026-06-09 | MOSLEY WILLIAM D | Director, Officer (CEO) | Option exercise / conversion (derivative) | 2,815 | $0.00 | $0 | Form 4 |
| 2026-06-09 | MOSLEY WILLIAM D | Director, Officer (CEO) | Option exercise / conversion | 2,415 | $0.00 | $0 | Form 4 |
| 2026-06-09 | MOSLEY WILLIAM D | Director, Officer (CEO) | Option exercise / conversion | 2,815 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Morris John Christopher | Officer (EVP & CTO) | Option exercise / conversion (derivative) | 631 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Morris John Christopher | Officer (EVP & CTO) | Option exercise / conversion (derivative) | 499 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Morris John Christopher | Officer (EVP & CTO) | Option exercise / conversion | 631 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Morris John Christopher | Officer (EVP & CTO) | Option exercise / conversion | 499 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Option exercise / conversion (derivative) | 663 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Option exercise / conversion (derivative) | 599 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Option exercise / conversion | 663 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Teh Ban Seng | Officer (EVP & Chief Commercial Officer) | Option exercise / conversion | 599 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Chong Kian Fatt | Officer (EVP Global Operations) | Option exercise / conversion (derivative) | 379 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Chong Kian Fatt | Officer (EVP Global Operations) | Option exercise / conversion (derivative) | 202 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Chong Kian Fatt | Officer (EVP Global Operations) | Option exercise / conversion | 379 | $0.00 | $0 | Form 4 |
| 2026-06-09 | Chong Kian Fatt | Officer (EVP Global Operations) | Option exercise / conversion | 202 | $0.00 | $0 | 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 2026-07-01 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.