STXSeagate Technology Holdings plc
Technology · Computer HardwareNasdaqStockMkt cap $208.1B
Disclosed trades
18
0 in 30d · 0 in 90d
Politicians
8
Last trade Mar 27, 2026
Buys
8
$180K at range midpoints
Sells
10
$178K at range midpoints
Closing price · 365 days
Sep 24, 2025 – Sep 23, 2026
Monthly buys vs sells · 24 months
Counts of disclosed transactions
- Buys
- Sells (incl. partial)
Politicians who traded it
| Politician | Seat | Trades | Buys | Sells | Bought (mid) | Sold (mid) | Last trade |
|---|---|---|---|---|---|---|---|
| DRon Wyden | Senate · OR | 7 | 5 | 2 | $131.5K | $65K | Nov 11, 2022 |
| DJulie Johnson | House · TX-32 | 4 | 0 | 4 | $0 | $32K | Dec 18, 2025 |
| RKevin Hern | House · OK-01 | 2 | 0 | 2 | $0 | $65K | Oct 28, 2025 |
| RAlan Armstrong | Senate · OK | 1 | 1 | 0 | $8K | $0 | Mar 27, 2026 |
| DDaniel S. Goldman | House · NY-10 | 1 | 0 | 1 | $0 | $8K | Jul 12, 2023 |
| RLisa C. McClain | House · MI-09 | 1 | 1 | 0 | $32.5K | $0 | Sep 8, 2025 |
| RMarjorie Taylor Greene | House · GA-14 | 1 | 1 | 0 | $8K | $0 | May 19, 2021 |
| RRobert P. Bresnahan, Jr. | House · PA-08 | 1 | 0 | 1 | $0 | $8K | Apr 8, 2025 |
Recent trades
| Politician | Ticker | Asset | Type | Owner | Amount | Traded | Filed | Source |
|---|---|---|---|---|---|---|---|---|
| RAlan Armstrong | STX | Seagate Technology Holdings PLC - Ordinary Shares (Ireland) | Buy | Self | $1,001 - $15,000 | Mar 27, 2026 | Jul 21, 2026116d | Filing |
| DJulie Johnson | STX | Seagate Technology Holdings PLC - Ordinary Shares (STX) | Sell | Joint | $1,001 - $15,000 | Dec 18, 2025 | Jan 15, 202628d | Filing |
| DJulie Johnson | STX | Seagate Technology Holdings PLC - Ordinary Shares (STX) | Partial | Joint | $1,001 - $15,000 | Nov 13, 2025 | Dec 11, 202528d | Filing |
| RKevin Hern | STX | Seagate Technology Holdings PLC - Ordinary Shares (STX) | Partial | Self | $15,001 - $50,000 | Oct 28, 2025 | Nov 16, 202519d | Filing |
| RKevin Hern | STX | Seagate Technology Holdings PLC - Ordinary Shares (STX) | Partial | Self | $15,001 - $50,000 | Oct 6, 2025 | Nov 16, 202541d | Filing |
| RLisa C. McClain | STX | Seagate Technology Holdings PLC - Ordinary Shares (STX) | Buy | Spouse | $15,001 - $50,000 | Sep 8, 2025 | Oct 22, 202544d | Filing |
| DJulie Johnson | STX | Seagate Technology Holdings PLC - Ordinary Shares (STX) | Partial | Joint | $1,001 - $15,000 | Aug 14, 2025 | Sep 11, 202528d | Filing |
| DJulie Johnson | STX | Seagate Technology Holdings PLC - Ordinary Shares (STX) | Partial | Joint | $1,001 - $15,000 | Jul 29, 2025 | Aug 14, 202516d | Filing |
| RRobert P. Bresnahan, Jr. | STX | Seagate Technology Holdings PLC - Ordinary Shares (STX) | Sell | Self | $1,001 - $15,000 | Apr 8, 2025 | May 8, 202530d | Filing |
| DDaniel S. Goldman | STX | Seagate Technology Holdings PLC - Ordinary Shares (STX) | Sell | Self | $1,001 - $15,000 | Jul 12, 2023 | Aug 13, 202332d | Filing |
| DRon Wyden | STX | Seagate Technology Holdings PLC - Ordinary Shares | Partial | Spouse | $15,001 - $50,000 | Nov 11, 2022 | May 15, 2023185d | Filing |
| DRon Wyden | STX | Seagate Technology Holdings PLC - Ordinary Shares | Sell | Spouse | $15,001 - $50,000 | Nov 11, 2022 | Dec 11, 202230d | Filing |
| RMarjorie Taylor Greene | STX | Seagate Technology Holdings PlC - Ordinary Shares (STX) | Buy | Joint | $1,001 - $15,000 | May 19, 2021 | Jun 17, 202129d | Filing |
| DRon Wyden | STX | Seagate Technology plc | Buy | Spouse | $1,001 - $15,000 | Mar 5, 2021 | Apr 2, 202128d | Filing |
| DRon Wyden | STX | Seagate Technology plc | Buy | Spouse | $1,001 - $15,000 | Mar 4, 2021 | Apr 2, 202129d | Filing |
| DRon Wyden | STX | Seagate Technology plc | Buy | Spouse | $1,001 - $15,000 | Feb 26, 2021 | Mar 23, 202125d | Filing |
| DRon Wyden | STX | Seagate Technology plc | Buy | Spouse | $50,001 - $100,000 | Jul 6, 2020 | Jul 31, 202025d | Filing |
| DRon Wyden | STX | Seagate Technology plc | Buy | Spouse | $15,001 - $50,000 | Jul 2, 2020 | Jul 31, 202029d | Filing |
Insider activity Filed
Insiders
18
Computer Storage Devices
Open-market buys · 90d
0
$0 bought
Open-market sells · 90d
379
$379.1M sold
Net · 90d
-$379.1M
-$572M net over 12 months · last Sep 21, 2026
| Date | Insider | Kind | Security | Shares | Price | Value | Post-holdings | D/I | 10b5-1 | Source |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 21, 2026filed Sep 22, 2026 | John Christopher MorrisEVP & CTO | Exercise | NQ Stock Optionderiv. | −915 | $0.00 | — | 17,378 | D | 10b5-1 | 4 |
| Sep 21, 2026filed Sep 22, 2026 | John Christopher MorrisEVP & CTO | Sale | Ordinary Shares | −40 | $902.07 | $36,083 | 22,693.25 | D | 10b5-1 | 4 |
| Sep 21, 2026filed Sep 22, 2026 | John Christopher MorrisEVP & CTO | Sale | Ordinary Shares | −40 | $899.53 | $35,981 | 22,733.25 | D | 10b5-1 | 4 |
| Sep 21, 2026filed Sep 22, 2026 | John Christopher MorrisEVP & CTO | Sale | Ordinary Shares | −80 | $897.28 | $71,782 | 22,773.25 | D | 10b5-1 | 4 |
| Sep 21, 2026filed Sep 22, 2026 | John Christopher MorrisEVP & CTO | Sale | Ordinary Shares | −915 | $894.27 | $818,257 | 22,853.25 | D | 10b5-1 | 4 |
| Sep 21, 2026filed Sep 22, 2026 | John Christopher MorrisEVP & CTO | Sale | Ordinary Shares | −40 | $893.15 | $35,726 | 23,768.25 | D | 10b5-1 | 4 |
| Sep 21, 2026filed Sep 22, 2026 | John Christopher MorrisEVP & CTO | Sale | Ordinary Shares | −40 | $890.54 | $35,622 | 23,808.25 | D | 10b5-1 | 4 |
| Sep 21, 2026filed Sep 22, 2026 | John Christopher MorrisEVP & CTO | Sale | Ordinary Shares | −120 | $887.92 | $106,550 | 23,848.25 | D | 10b5-1 | 4 |
| Sep 21, 2026filed Sep 22, 2026 | John Christopher MorrisEVP & CTO | Sale | Ordinary Shares | −40 | $886.27 | $35,451 | 23,968.25 | D | 10b5-1 | 4 |
| Sep 21, 2026filed Sep 22, 2026 | John Christopher MorrisEVP & CTO | Sale | Ordinary Shares | −320 | $883.08 | $282,585 | 24,008.25 | D | 10b5-1 | 4 |
Shares, prices and post-transaction holdings are exactly as reported on SEC Form 4. Net figures count open-market buys minus open-market sales only (awards, exercises, withholding and gifts are excluded).
Unusual activity Estimated
- 58Exec saleSep 15, 2026
STX CEO William D Mosley sold $75.6M
Details
- Insider
- William D Mosley
- Company
- Seagate Technology Holdings plc
- Ticker
- STX
- Tx kind
- open_market_sale
- Tx date
- Sep 15, 2026
- Shares
- 97,889.25
- Price
- $772
- Value
- $75.6M
- Is 10b5 1
- No
- 44Exec saleAug 21, 2026
STX CEO William D Mosley sold $9.6M
Details
- Insider
- William D Mosley
- Company
- Seagate Technology Holdings plc
- Ticker
- STX
- Tx kind
- open_market_sale
- Tx date
- Aug 21, 2026
- Shares
- 11,308
- Price
- $849
- Value
- $9.6M
- Is 10b5 1
- No
- 100Well timedMar 27, 2026
Sen. Alan Armstrong's STX buy is up 119% after 30 days
Details
- Politician
- Alan Armstrong
- Ticker
- STX
- Asset
- Seagate Technology Holdings PLC - Ordinary Shares (Ireland)
- Tx type
- buy
- Tx date
- Mar 27, 2026
- Filing date
- Jul 21, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 116
- Is whale
- No
- Entry date
- Mar 27, 2026
- Entry close
- 380.07
- Exit date
- May 11, 2026
- Exit close
- 834.01
- Forward return
- +119.4%
- Sign adjusted return
- +119.4%
- N trading days
- 30
- 65Insider overlapMar 27, 2026
Sen. Alan Armstrong bought STX 5 days before its CEO sold $1.2M
Details
- Politician
- Alan Armstrong
- Ticker
- STX
- Asset
- Seagate Technology Holdings PLC - Ordinary Shares (Ireland)
- Tx type
- buy
- Tx date
- Mar 27, 2026
- Filing date
- Jul 21, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 116
- Is whale
- No
- Insider trade
- {"insider":{"slug":"william-d-mosley","name":"William D Mosley","title":"CEO","short_title":"CEO"},"company":"Seagate Technology Holdings plc","ticker":"STX","tx_kind":"open_market_sale","tx_date":"2026-04-01","shares":2900,"price":420.7721,"value":1220239.09,"is_10b5_1":true}
- Days between
- -5
- Opposite side
- Yes
- 45Exec saleMar 19, 2026
STX CEO William D Mosley sold $10M
Details
- Insider
- William D Mosley
- Company
- Seagate Technology Holdings plc
- Ticker
- STX
- Tx kind
- open_market_sale
- Tx date
- Mar 19, 2026
- Shares
- 24,584
- Price
- $407
- Value
- $10M
- Is 10b5 1
- No
- 50Insider overlapDec 18, 2025
Rep. Julie Johnson sold STX 15 days before its CEO sold $1.4M
Details
- Politician
- Julie Johnson
- Ticker
- STX
- Asset
- Seagate Technology Holdings PLC - Ordinary Shares (STX)
- Tx type
- sell
- Tx date
- Dec 18, 2025
- Filing date
- Jan 15, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 28
- Is whale
- No
- Insider trade
- {"insider":{"slug":"william-d-mosley","name":"William D Mosley","title":"CEO","short_title":"CEO"},"company":"Seagate Technology Holdings plc","ticker":"STX","tx_kind":"open_market_sale","tx_date":"2026-01-02","shares":5009,"price":287.2739,"value":1438954.97,"is_10b5_1":true}
- Days between
- -15
- Opposite side
- No
- 50Insider overlapNov 13, 2025
Rep. Julie Johnson partially sold STX 10 days after its CEO sold $1.5M
Details
- Politician
- Julie Johnson
- Ticker
- STX
- Asset
- Seagate Technology Holdings PLC - Ordinary Shares (STX)
- Tx type
- partial_sale
- Tx date
- Nov 13, 2025
- Filing date
- Dec 11, 2025
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 28
- Is whale
- No
- Insider trade
- {"insider":{"slug":"william-d-mosley","name":"William D Mosley","title":"CEO","short_title":"CEO"},"company":"Seagate Technology Holdings plc","ticker":"STX","tx_kind":"open_market_sale","tx_date":"2025-11-03","shares":5506,"price":266.2473,"value":1465957.63,"is_10b5_1":true}
- Days between
- 10
- Opposite side
- No
- 50Insider overlapOct 28, 2025
Rep. Kevin Hern partially sold STX 6 days before its CEO sold $1.5M
Details
- Politician
- Kevin Hern
- Ticker
- STX
- Asset
- Seagate Technology Holdings PLC - Ordinary Shares (STX)
- Tx type
- partial_sale
- Tx date
- Oct 28, 2025
- Filing date
- Nov 16, 2025
- Amount low
- $15,001
- Amount high
- $50,000
- Amount mid
- $32,501
- Disclosed range
- $15,001 - $50,000
- Reporting lag days
- 19
- Is whale
- No
- Insider trade
- {"insider":{"slug":"william-d-mosley","name":"William D Mosley","title":"CEO","short_title":"CEO"},"company":"Seagate Technology Holdings plc","ticker":"STX","tx_kind":"open_market_sale","tx_date":"2025-11-03","shares":5506,"price":266.2473,"value":1465957.63,"is_10b5_1":true}
- Days between
- -6
- Opposite side
- No
- 50Insider overlapOct 6, 2025
Rep. Kevin Hern partially sold STX 5 days after its CEO sold $998K
Details
- Politician
- Kevin Hern
- Ticker
- STX
- Asset
- Seagate Technology Holdings PLC - Ordinary Shares (STX)
- Tx type
- partial_sale
- Tx date
- Oct 6, 2025
- Filing date
- Nov 16, 2025
- Amount low
- $15,001
- Amount high
- $50,000
- Amount mid
- $32,501
- Disclosed range
- $15,001 - $50,000
- Reporting lag days
- 41
- Is whale
- No
- Insider trade
- {"insider":{"slug":"william-d-mosley","name":"William D Mosley","title":"CEO","short_title":"CEO"},"company":"Seagate Technology Holdings plc","ticker":"STX","tx_kind":"open_market_sale","tx_date":"2025-10-01","shares":3885,"price":256.8806,"value":997981.13,"is_10b5_1":true}
- Days between
- 5
- Opposite side
- No
- 65Insider overlapSep 8, 2025
Rep. Lisa C. McClain bought STX 6 days after its CEO sold $1.2M
Details
- Politician
- Lisa C. McClain
- Ticker
- STX
- Asset
- Seagate Technology Holdings PLC - Ordinary Shares (STX)
- Tx type
- buy
- Tx date
- Sep 8, 2025
- Filing date
- Oct 22, 2025
- Amount low
- $15,001
- Amount high
- $50,000
- Amount mid
- $32,501
- Disclosed range
- $15,001 - $50,000
- Reporting lag days
- 44
- Is whale
- No
- Insider trade
- {"insider":{"slug":"william-d-mosley","name":"William D Mosley","title":"CEO","short_title":"CEO"},"company":"Seagate Technology Holdings plc","ticker":"STX","tx_kind":"open_market_sale","tx_date":"2025-09-02","shares":7000,"price":170.1923,"value":1191346.1,"is_10b5_1":true}
- Days between
- 6
- Opposite side
- Yes