STX
Seagate Technology Holdings PLC · Technology · Computer Hardware
$848.99
-10.21% today · -7.40% 1W
Oct 2 close or latest
PreviewWhy it's moving
Underperforming without a clear catalyst yet
- STX −10.21% on the last session vs SPY +0.74%: −11.0 pts of stock-specific move.
- Aftermath, big drop (Oct 2): After its 61 big drops in the past 5 years, STX typically lost 0.6% over the next day (median) and was higher only 43% of the time; half the outcomes fell between -2.0% and +1.9%. An ordinary day: +0.2%. Among S&P 500 stocks after big drops, that ranks #391 of 500.
- 2 Reddit mentions in the past 24 hours, 67% positive over the week.
- 16 insider or congressional trades in the past 30 days, including 8 insider sales not under a 10b5-1 plan.
- Market backdrop (Fri): Average Hourly Earnings m/m 0.1% vs 0.3% expected (cooler); Non-Farm Employment Change 29K vs 89K expected (weaker); S&P futures +0.41%, 10-year yield -5bp in the 30 minutes after.
Assembled from Wallsti's own signals.
Insiders · 1 month
−$132.1M
unplanned net · 0 buys · 16 sells · 4 insiders
sales: 8 unplanned, 8 under a 10b5-1 plan (50% unplanned)
Insiders · 3 months
−$165.8M
unplanned net · 0 buys · 34 sells · 6 insiders
sales: 13 unplanned, 21 under a 10b5-1 plan (38% unplanned)
Congress · 3 months
none
no reported trades
Congress · 1 year
≈−$40.5K
1 buy · 3 sells · 3 members
Insiders
| Trade date | Insider | Role | Side | Type | Shares | Avg price | Value | Filed |
|---|---|---|---|---|---|---|---|---|
| Oct 1, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 18,998 | $914.67 | $17.4M | Oct 2 |
| Oct 1, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 11,002 | $935.60 | $10.3M | Oct 2 |
| Sep 21, 2026 | John Christopher Morris | CTO | Sell | 10b5-1 plan | 9,354 | $877.91 | $8.2M | Sep 22 |
| Sep 15, 2026 | John Christopher Morris | CTO | Sell | unplanned | 15,465.5 | $772.15 | $11.9M | Sep 16 |
| Sep 15, 2026 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 52,730 | $782.08 | $41.2M | Sep 16 |
| Sep 15, 2026 | William D Mosley | CEO | Sell | unplanned | 97,889.25 | $772.14 | $75.6M | Sep 16 |
| Sep 15, 2026 | Gianluca Romano | CFO | Sell | unplanned | 49,983.5 | $772.16 | $38.6M | Sep 16 |
| Sep 14, 2026 | William D Mosley | CEO | Sell | unplanned | 1,869.75 | $781.23 | $1.5M | Sep 15 |
| Sep 14, 2026 | Gianluca Romano | CFO | Sell | 10b5-1 plan | 5,555 | $841.95 | $4.7M | Sep 15 |
| Sep 14, 2026 | John Christopher Morris | CTO | Sell | unplanned | 492.75 | $781.23 | $385K | Sep 15 |
| Sep 14, 2026 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 989 | $779.00 | $770.4K | Sep 15 |
| Sep 11, 2026 | Gianluca Romano | CFO | Sell | 10b5-1 plan | 45,898 | $830.01 | $38.1M | Sep 15 |
| Sep 10, 2026 | William D Mosley | CEO | Sell | unplanned | 2,849.25 | $862.13 | $2.5M | Sep 11 |
| Sep 10, 2026 | Gianluca Romano | CFO | Sell | unplanned | 1,348 | $862.13 | $1.2M | Sep 11 |
| Sep 10, 2026 | John Christopher Morris | CTO | Sell | unplanned | 572.25 | $862.13 | $493.4K | Sep 11 |
| Sep 10, 2026 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 663 | $860.09 | $570.2K | Sep 11 |
| Sep 1, 2026 | Yolanda Lee Conyers | Director | Sell | 10b5-1 plan | 750 | $815.11 | $611.3K | Sep 3 |
| Sep 1, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 30,000 | $816.28 | $24.5M | Sep 3 |
| Aug 24, 2026 | James Ci Lee | EVP | Sell | 10b5-1 plan | 9,013 | $794.84 | $7.2M | Aug 26 |
| Aug 21, 2026 | William D Mosley | CEO | Sell | unplanned | 18,138.5 | $849.35 | $15.4M | Aug 24 |
| Aug 21, 2026 | Gianluca Romano | CFO | Sell | unplanned | 9,076.25 | $849.35 | $7.7M | Aug 24 |
| Aug 21, 2026 | James Ci Lee | EVP | Sell | unplanned | 3,938.75 | $849.35 | $3.3M | Aug 24 |
| Aug 21, 2026 | John Christopher Morris | CTO | Sell | 10b5-1 plan | 4,038.5 | $847.57 | $3.4M | Aug 24 |
| Aug 21, 2026 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 9,862 | $852.97 | $8.4M | Aug 24 |
| Aug 20, 2026 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 6,048 | $842.97 | $5.1M | Aug 24 |
| Aug 13, 2026 | Ban Seng Teh | EVP | Sell | unplanned | 7,361 | $920.80 | $6.8M | Aug 14 |
| Aug 7, 2026 | Gianluca Romano | CFO | Sell | 10b5-1 plan | 7,240 | $781.64 | $5.7M | Aug 11 |
| Aug 7, 2026 | Gianluca Romano | CFO | Sell | 10b5-1 plan | 14,091 | $811.25 | $11.4M | Aug 11 |
| Aug 7, 2026 | Gianluca Romano | CFO | Sell | 10b5-1 plan | 880 | $845.12 | $743.7K | Aug 11 |
| Aug 3, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 12,920 | $803.47 | $10.4M | Aug 4 |
| Aug 3, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 17,080 | $827.30 | $14.1M | Aug 4 |
| Aug 3, 2026 | John Christopher Morris | CTO | Sell | 10b5-1 plan | 168 | $817.76 | $137.4K | Aug 4 |
| Jul 30, 2026 | James Ci Lee | EVP | Sell | 10b5-1 plan | 694 | $877.45 | $609K | Aug 3 |
| Jul 23, 2026 | James Ci Lee | EVP | Sell | unplanned | 542.25 | $905.01 | $490.7K | Jul 24 |
| Jul 1, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 20,657 | $910.48 | $18.8M | Jul 2 |
| Jul 1, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 9,343 | $924.42 | $8.6M | Jul 2 |
| Jun 12, 2026 | William D Mosley | CEO | Sell | unplanned | 1,768.25 | $880.19 | $1.6M | Jun 15 |
| Jun 12, 2026 | Gianluca Romano | CFO | Sell | unplanned | 903.25 | $880.19 | $795K | Jun 15 |
| Jun 12, 2026 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 989 | $880.19 | $870.5K | Jun 15 |
| Jun 12, 2026 | John Christopher Morris | CTO | Sell | 10b5-1 plan | 1,364 | $880.19 | $1.2M | Jun 15 |
| Jun 10, 2026 | Gianluca Romano | CFO | Sell | unplanned | 1,350.5 | $821.76 | $1.1M | Jun 11 |
| Jun 10, 2026 | William D Mosley | CEO | Sell | unplanned | 2,854.75 | $821.74 | $2.3M | Jun 11 |
| Jun 10, 2026 | John Christopher Morris | CTO | Sell | unplanned | 573.75 | $821.66 | $471.4K | Jun 11 |
| Jun 10, 2026 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 663 | $821.86 | $544.9K | Jun 11 |
| Jun 4, 2026 | Shankar Arumugavelu | Director | Sell | unplanned | 1,000 | $927.68 | $927.7K | Jun 4 |
| Jun 2, 2026 | Prat Bhatt | Director | Sell | 10b5-1 plan | 1,000 | $929.88 | $929.9K | Jun 2 |
| Jun 1, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 16,220 | $900.21 | $14.6M | Jun 2 |
| Jun 1, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 13,780 | $924.99 | $12.7M | Jun 2 |
| Jun 1, 2026 | Yolanda Lee Conyers | Director | Sell | 10b5-1 plan | 750 | $885.33 | $664K | Jun 2 |
| May 20, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 30,000 | $751.29 | $22.5M | May 21 |
| May 14, 2026 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 15,560 | $815.42 | $12.7M | May 14 |
| May 7, 2026 | Gianluca Romano | CFO | Sell | 10b5-1 plan | 1,902 | $770.00 | $1.5M | May 8 |
| May 6, 2026 | Gianluca Romano | CFO | Sell | 10b5-1 plan | 22,488 | $774.22 | $17.4M | May 8 |
| May 5, 2026 | Stephanie Tilenius | Director | Sell | unplanned | 1,580 | $766.61 | $1.2M | May 6 |
| May 4, 2026 | James Ci Lee | EVP | Sell | 10b5-1 plan | 697 | $741.17 | $516.6K | May 6 |
| May 4, 2026 | John Christopher Morris | CTO | Sell | 10b5-1 plan | 5,626 | $738.37 | $4.2M | May 6 |
| Apr 22, 2026 | James Ci Lee | EVP | Tax | tax withholding | 540 | $579.88 | $313.1K | Apr 23 |
| Apr 1, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 20,000 | $420.73 | $8.4M | Apr 2 |
| Mar 19, 2026 | William D Mosley | CEO | Sell | unplanned | 24,584 | $406.77 | $10M | Mar 23 |
| Mar 13, 2026 | John Christopher Morris | CTO | Sell | 10b5-1 plan | 112 | $377.44 | $42.3K | Mar 16 |
| Mar 11, 2026 | William D Mosley | CEO | Tax | tax withholding | 1,658 | $385.97 | $639.9K | Mar 12 |
| Mar 11, 2026 | John Christopher Morris | CTO | Tax | tax withholding | 430 | $385.97 | $166K | Mar 12 |
| Mar 11, 2026 | Gianluca Romano | CFO | Tax | tax withholding | 847 | $385.97 | $326.9K | Mar 12 |
| Mar 9, 2026 | William D Mosley | CEO | Tax | tax withholding | 2,613 | $374.33 | $978.1K | Mar 11 |
| Mar 9, 2026 | Gianluca Romano | CFO | Tax | tax withholding | 1,236 | $374.33 | $462.7K | Mar 11 |
| Mar 9, 2026 | John Christopher Morris | CTO | Tax | tax withholding | 516 | $374.33 | $193.2K | Mar 11 |
| Mar 2, 2026 | Yolanda Lee Conyers | Director | Sell | 10b5-1 plan | 750 | $393.59 | $295.2K | Mar 3 |
| Mar 2, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 20,000 | $384.76 | $7.7M | Mar 3 |
| Feb 24, 2026 | John Christopher Morris | CTO | Sell | 10b5-1 plan | 240 | $410.00 | $98.4K | Feb 25 |
| Feb 23, 2026 | Kian Fatt Chong | EVP | Sell | unplanned | 5,846 | $416.48 | $2.4M | Feb 23 |
| Feb 22, 2026 | Gianluca Romano | CFO | Tax | tax withholding | 13,071 | $411.11 | $5.4M | Feb 23 |
| Feb 20, 2026 | John Christopher Morris | CTO | Tax | tax withholding | 2,032 | $411.11 | $835.4K | Feb 23 |
| Feb 20, 2026 | William D Mosley | CEO | Tax | tax withholding | 5,966 | $411.11 | $2.5M | Feb 23 |
| Feb 2, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 20,000 | $429.27 | $8.6M | Feb 3 |
| Jan 30, 2026 | Jay L Geldmacher | Director | Sell | unplanned | 925 | $448.02 | $414.4K | Feb 2 |
| Jan 29, 2026 | Ban Seng Teh | EVP | Sell | unplanned | 20,195 | $442.29 | $8.9M | Feb 2 |
| Jan 26, 2026 | James Ci Lee | EVP | Sell | 10b5-1 plan | 673 | $348.85 | $234.8K | Jan 28 |
| Jan 22, 2026 | James Ci Lee | EVP | Tax | tax withholding | 564 | $346.53 | $195.4K | Jan 26 |
| Jan 12, 2026 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 1,412 | $299.31 | $422.6K | Jan 14 |
| Jan 2, 2026 | William D Mosley | CEO | Sell | 10b5-1 plan | 20,000 | $285.56 | $5.7M | Jan 6 |
| Dec 15, 2025 | John Christopher Morris | CTO | Sell | 10b5-1 plan | 113 | $291.89 | $33K | Dec 16 |
| Dec 11, 2025 | William D Mosley | CEO | Tax | tax withholding | 1,678 | $307.85 | $516.6K | Dec 12 |
| Dec 11, 2025 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 2,010 | $295.90 | $594.8K | Dec 12 |
| Dec 11, 2025 | John Christopher Morris | CTO | Tax | tax withholding | 430 | $307.85 | $132.4K | Dec 12 |
| Dec 11, 2025 | Gianluca Romano | CFO | Tax | tax withholding | 857 | $307.85 | $263.8K | Dec 12 |
| Dec 9, 2025 | William D Mosley | CEO | Tax | tax withholding | 2,644 | $282.86 | $747.9K | Dec 11 |
| Dec 9, 2025 | Gianluca Romano | CFO | Tax | tax withholding | 1,251 | $282.86 | $353.9K | Dec 11 |
| Dec 9, 2025 | John Christopher Morris | CTO | Tax | tax withholding | 516 | $282.86 | $146K | Dec 11 |
| Dec 2, 2025 | Yolanda Lee Conyers | Director | Sell | 10b5-1 plan | 750 | $272.91 | $204.7K | Dec 2 |
| Dec 1, 2025 | William D Mosley | CEO | Sell | 10b5-1 plan | 20,000 | $271.03 | $5.4M | Dec 2 |
| Nov 13, 2025 | Gianluca Romano | CFO | Sell | 10b5-1 plan | 8,002 | $266.69 | $2.1M | Nov 14 |
| Nov 12, 2025 | Gianluca Romano | CFO | Sell | 10b5-1 plan | 54,021 | $285.16 | $15.4M | Nov 14 |
| Nov 11, 2025 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 1,412 | $288.98 | $408K | Nov 12 |
| Nov 11, 2025 | James Ci Lee | EVP | Sell | 10b5-1 plan | 697 | $288.98 | $201.4K | Nov 12 |
| Nov 10, 2025 | Shankar Arumugavelu | Director | Sell | unplanned | 5,000 | $294.56 | $1.5M | Nov 12 |
| Nov 5, 2025 | Ban Seng Teh | EVP | Sell | unplanned | 6,000 | $270.00 | $1.6M | Nov 5 |
| Nov 3, 2025 | William D Mosley | CEO | Sell | 10b5-1 plan | 20,000 | $262.82 | $5.3M | Nov 5 |
| Nov 3, 2025 | Stephanie Tilenius | Director | Sell | unplanned | 2,046 | $266.41 | $545.1K | Nov 5 |
| Oct 31, 2025 | Jay L Geldmacher | Director | Sell | unplanned | 1,250 | $269.10 | $336.4K | Nov 3 |
| Oct 30, 2025 | Kian Fatt Chong | EVP | Sell | unplanned | 7,078 | $272.14 | $1.9M | Nov 3 |
| Oct 22, 2025 | James Ci Lee | EVP | Tax | tax withholding | 540 | $215.05 | $116.1K | Oct 24 |
| Oct 19, 2025 | Mark Adams | Director | Tax | tax withholding | 647 | $225.40 | $145.8K | Oct 21 |
| Oct 19, 2025 | Jay L Geldmacher | Director | Tax | tax withholding | 647 | $225.40 | $145.8K | Oct 21 |
| Oct 19, 2025 | Yolanda Lee Conyers | Director | Tax | tax withholding | 647 | $225.40 | $145.8K | Oct 21 |
| Oct 19, 2025 | Richard L Clemmer | Director | Tax | tax withholding | 647 | $225.40 | $145.8K | Oct 21 |
| Oct 19, 2025 | Stephanie Tilenius | Director | Tax | tax withholding | 647 | $225.40 | $145.8K | Oct 21 |
| Oct 19, 2025 | Dylan G. Haggart | Director | Tax | tax withholding | 647 | $225.40 | $145.8K | Oct 21 |
| Oct 19, 2025 | Prat Bhatt | Director | Tax | tax withholding | 647 | $225.40 | $145.8K | Oct 21 |
| Oct 19, 2025 | Michael R Cannon | Director | Tax | tax withholding | 823 | $225.40 | $185.5K | Oct 21 |
| Oct 19, 2025 | Judy Bruner | Director | Tax | tax withholding | 647 | $225.40 | $145.8K | Oct 21 |
| Oct 19, 2025 | Shankar Arumugavelu | Director | Tax | tax withholding | 647 | $225.40 | $145.8K | Oct 21 |
| Oct 13, 2025 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 1,410 | $225.56 | $318K | Oct 15 |
| Oct 1, 2025 | William D Mosley | CEO | Sell | 10b5-1 plan | 20,000 | $249.90 | $5M | Oct 3 |
| Sep 16, 2025 | John Christopher Morris | CTO | Sell | 10b5-1 plan | 377 | $211.26 | $79.6K | Sep 17 |
| Sep 14, 2025 | Gianluca Romano | CFO | Tax | tax withholding | 12,069 | $196.05 | $2.4M | Sep 15 |
| Sep 14, 2025 | John Christopher Morris | CTO | Tax | tax withholding | 3,593 | $196.09 | $704.5K | Sep 15 |
| Sep 14, 2025 | William D Mosley | CEO | Tax | tax withholding | 34,609 | $196.03 | $6.8M | Sep 15 |
| Sep 12, 2025 | John Christopher Morris | CTO | Sell | 10b5-1 plan | 15,347 | $195.80 | $3M | Sep 15 |
| Sep 11, 2025 | Ban Seng Teh | EVP | Sell | 10b5-1 plan | 3,732 | $193.30 | $721.4K | Sep 15 |
| Sep 10, 2025 | Ban Seng Teh | EVP | Sell | unplanned | 6,781 | $191.53 | $1.3M | Sep 11 |
| Sep 9, 2025 | William D Mosley | CEO | Tax | tax withholding | 13,158 | $191.59 | $2.5M | Sep 11 |
| Sep 9, 2025 | John Christopher Morris | CTO | Tax | tax withholding | 2,496 | $191.59 | $478.2K | Sep 11 |
| Sep 9, 2025 | Gianluca Romano | CFO | Tax | tax withholding | 6,608 | $191.59 | $1.3M | Sep 11 |
| Sep 2, 2025 | William D Mosley | CEO | Sell | 10b5-1 plan | 20,000 | $168.97 | $3.4M | Sep 4 |
| Sep 2, 2025 | Yolanda Lee Conyers | Director | Sell | 10b5-1 plan | 750 | $168.80 | $126.6K | Sep 4 |
Officers, directors and 10% owners file SEC Form 4 within two business days. Unplanned: the insider chose to trade now, the trades worth attention; their dollars make the net above. 10b5-1 plan: scheduled in advance, kept for the record. Tax: shares withheld on vesting stock, not a market trade. Awards, option exercises and gifts are left out. Source: SEC EDGAR, collected daily for the stocks discussed on Reddit.
Congress
| Trade date | Member | Chamber | Side | Amount | Disclosed |
|---|---|---|---|---|---|
| Mar 27, 2026 | Alan Armstrong | Senate | Buy | $1K–$15K | Jul 21 |
| Dec 18, 2025 | Julie Johnson | House | Sell | $1K–$15K | Jan 15 |
| Nov 13, 2025 | Julie Johnson | House | Sell | $1K–$15K | Dec 11 |
| Oct 28, 2025 | Kevin Hern | House | Sell | $15K–$50K | Nov 16 |
| Sep 8, 2025 | Lisa McClain | House | Buy | $15K–$50K | Oct 22 |
Members of Congress report trades within 45 days of the trade date, so these are never real-time. Amounts are disclosed as ranges; the net uses each range's midpoint (≈). Source: House and Senate periodic transaction reports via CongressInvests, refreshed daily. All recent insider and congressional trades