Congress Trades

Coverage gap. Senate eFD: the last 13 checks failed; last successful check Oct 23. New filings from this source are not coming in. Newest Senate eFD filing on this site: 2026-10-21.

Source status

William D MosleyFiled

CEOExecutiveDirectorCIK 1388390
Net · 12 months
-$316.8M
Open-market buys − sales
Sold · 12 months
$316.8M
$165.3M in 90d · 454 sales on record
Bought · 12 months
$0
$0 in 90d · 0 buys on record
Under 10b5-1
66%
Share of sale value under a trading plan
Last trade
Nov 2, 2026
Filed Nov 3, 2026 · 596 rows

Monthly open-market value · 24 months Filed

  • Bought (open market)
  • Sold (open market)

Unusual activity Estimated

Whale score 98Whale watch
  • 50Insider overlapPublic Nov 3, 2026 · traded Oct 23, 2026

    Rep. Kevin Hern partially sold STX 10 days before its CEO sold $1.4M

    RKevin HernWilliam D MosleySTXFiling4
    Details
    Politician
    Kevin Hern
    Ticker
    STX
    Asset
    Seagate Technology Holdings PLC - Ordinary Shares (STX)
    Tx type
    partial_sale
    Traded
    Oct 23, 2026
    Filed
    Oct 28, 2026
    Amount low
    $15,001
    Amount high
    $50,000
    Range midpoint (estimate)
    $32,501
    Disclosed range
    $15,001 - $50,000
    Reporting lag days
    5
    Owner type
    self
    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":"2026-11-02","shares":2372,"price":607.2785,"value":1440464.6,"is_10b5_1":true,"filing_date":"2026-11-03"}
    Days between
    -10
    Opposite side
    No
    Public from
    Nov 3, 2026
    Method version
    2026-11-03
  • 50Insider overlapPublic Oct 12, 2026 · traded Sep 30, 2026

    Rep. Lisa C. McClain's spouse partially sold STX 1 day before its CEO sold $1.6M

    RLisa C. McClainWilliam D MosleySTXFiling4
    Details
    Politician
    Lisa C. McClain
    Ticker
    STX
    Asset
    Seagate Technology Holdings PLC - Ordinary Shares (STX)
    Tx type
    partial_sale
    Traded
    Sep 30, 2026
    Filed
    Oct 12, 2026
    Amount low
    $15,001
    Amount high
    $50,000
    Range midpoint (estimate)
    $32,501
    Disclosed range
    $15,001 - $50,000
    Reporting lag days
    12
    Owner type
    spouse
    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":"2026-10-01","shares":1665,"price":930.994,"value":1550105.01,"is_10b5_1":true,"filing_date":"2026-10-02"}
    Days between
    -1
    Opposite side
    No
    Public from
    Oct 12, 2026
    Method version
    2026-11-03
  • 50Insider overlapPublic Sep 25, 2026 · traded Sep 15, 2026

    Rep. Kevin Hern partially sold STX the same day its CEO sold $75.6M

    RKevin HernWilliam D MosleySTXFiling4
    Details
    Politician
    Kevin Hern
    Ticker
    STX
    Asset
    Seagate Technology Holdings PLC - Ordinary Shares (STX)
    Tx type
    partial_sale
    Traded
    Sep 15, 2026
    Filed
    Sep 25, 2026
    Amount low
    $1,001
    Amount high
    $15,000
    Range midpoint (estimate)
    $8,001
    Disclosed range
    $1,001 - $15,000
    Reporting lag days
    10
    Owner type
    self
    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":"2026-09-15","shares":97889.25,"price":772.1432,"value":75584518.74,"is_10b5_1":false,"filing_date":"2026-09-16"}
    Days between
    0
    Opposite side
    No
    Public from
    Sep 25, 2026
    Method version
    2026-11-03
  • 58Exec salePublic Sep 16, 2026 · traded Sep 15, 2026

    STX CEO William D Mosley sold $75.6M

    William D MosleySTX4
    Details
    Insider
    William D Mosley
    Company
    Seagate Technology Holdings plc
    Ticker
    STX
    Tx kind
    open_market_sale
    Traded
    Sep 15, 2026
    Shares
    97,889.25
    Price
    $772
    Value
    $75.6M
    Is 10b5 1
    No
    Filed
    Sep 16, 2026
    Public from
    Sep 16, 2026
    Method version
    2026-11-03
  • 44Exec salePublic Aug 24, 2026 · traded Aug 21, 2026

    STX CEO William D Mosley sold $9.6M

    William D MosleySTX4
    Details
    Insider
    William D Mosley
    Company
    Seagate Technology Holdings plc
    Ticker
    STX
    Tx kind
    open_market_sale
    Traded
    Aug 21, 2026
    Shares
    11,308
    Price
    $849
    Value
    $9.6M
    Is 10b5 1
    No
    Filed
    Aug 24, 2026
    Public from
    Aug 24, 2026
    Method version
    2026-11-03
  • 65Insider overlapPublic Jul 21, 2026 · traded Mar 27, 2026

    Sen. Alan Armstrong bought STX 5 days before its CEO sold $1.2M

    RAlan ArmstrongWilliam D MosleySTXFiling4
    Details
    Politician
    Alan Armstrong
    Ticker
    STX
    Asset
    Seagate Technology Holdings PLC - Ordinary Shares (Ireland)
    Tx type
    buy
    Traded
    Mar 27, 2026
    Filed
    Jul 21, 2026
    Amount low
    $1,001
    Amount high
    $15,000
    Range midpoint (estimate)
    $8,001
    Disclosed range
    $1,001 - $15,000
    Reporting lag days
    116
    Owner type
    self
    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,"filing_date":"2026-04-02"}
    Days between
    -5
    Opposite side
    Yes
    Public from
    Jul 21, 2026
    Method version
    2026-11-03
  • 50Insider overlapPublic Jul 6, 2026 · traded Jun 2, 2026

    Rep. Ro Khanna's dependent child partially sold STX 1 day after its CEO sold $1.7M

    DRo KhannaWilliam D MosleySTXFilingOCR4
    Details
    Politician
    Ro Khanna
    Ticker
    STX
    Asset
    SEAGATE TECHNOLOGY HOLDIN PLC CMN
    Tx type
    partial_sale
    Traded
    Jun 2, 2026
    Filed
    Jul 6, 2026
    Amount low
    $1,001
    Amount high
    $15,000
    Range midpoint (estimate)
    $8,001
    Disclosed range
    $1,001 - $15,000
    Reporting lag days
    34
    Owner type
    dependent
    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":"2026-06-01","shares":1807,"price":921.7474,"value":1665597.55,"is_10b5_1":true,"filing_date":"2026-06-02"}
    Days between
    1
    Opposite side
    No
    Public from
    Jul 6, 2026
    Method version
    2026-11-03
  • 65Insider overlapPublic May 11, 2026 · traded Apr 13, 2026

    Rep. Ro Khanna's spouse bought STX 12 days after its CEO sold $1.2M

    DRo KhannaWilliam D MosleySTXFilingOCR4
    Details
    Politician
    Ro Khanna
    Ticker
    STX
    Asset
    SEAGATE TECHNOLOGY HOLDIN PLC CMN
    Tx type
    buy
    Traded
    Apr 13, 2026
    Filed
    May 11, 2026
    Amount low
    $1,001
    Amount high
    $15,000
    Range midpoint (estimate)
    $8,001
    Disclosed range
    $1,001 - $15,000
    Reporting lag days
    28
    Owner type
    spouse
    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,"filing_date":"2026-04-02"}
    Days between
    12
    Opposite side
    Yes
    Public from
    May 11, 2026
    Method version
    2026-11-03
  • 45Exec salePublic Mar 23, 2026 · traded Mar 19, 2026

    STX CEO William D Mosley sold $10M

    William D MosleySTX4
    Details
    Insider
    William D Mosley
    Company
    Seagate Technology Holdings plc
    Ticker
    STX
    Tx kind
    open_market_sale
    Traded
    Mar 19, 2026
    Shares
    24,584
    Price
    $407
    Value
    $10M
    Is 10b5 1
    No
    Filed
    Mar 23, 2026
    Public from
    Mar 23, 2026
    Method version
    2026-11-03
  • 50Insider overlapPublic Mar 9, 2026 · traded Feb 5, 2026

    Rep. Ro Khanna's spouse sold STX 3 days after its CEO sold $1.7M

    DRo KhannaWilliam D MosleySTXFilingOCR4
    Details
    Politician
    Ro Khanna
    Ticker
    STX
    Asset
    SEAGATE TECHNOLOGY HOLDIN PLC CMN
    Tx type
    sell
    Traded
    Feb 5, 2026
    Filed
    Mar 9, 2026
    Amount low
    $1,001
    Amount high
    $15,000
    Range midpoint (estimate)
    $8,001
    Disclosed range
    $1,001 - $15,000
    Reporting lag days
    32
    Owner type
    spouse
    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":"2026-02-02","shares":3875,"price":432.1884,"value":1674730.05,"is_10b5_1":true,"filing_date":"2026-02-03"}
    Days between
    3
    Opposite side
    No
    Public from
    Mar 9, 2026
    Method version
    2026-11-03

Transactions

Independent third-party platform; not affiliated with or endorsed by any member of Congress. Data sourced from publicly available filings and records. Portfolio, holdings, returns, and allocations are estimates and may differ from actual values. Informational and educational only; not investment advice. Shares, prices and post-transaction holdings are exactly as reported on SEC Form 4; the whale score is a model ranking of that filed activity.