STX Seagate Technology plc

NASDAQ
$830.17

Seagate Technology plc (STX) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with STX's own trailing one-year pace, with 4% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 6 sellers in the last 90 days
Insiders buying
0
0 transactions
Insiders selling
11
606 transactions
Purchases
$0
0 shares
Sales
$354.1M
608,593 shares
Net activity
-$354.1M
purchases less sales

How much of that selling was preplanned? 4% planned / 96% discretionary

10b5-1 plan sales $14.1M 39 transactions · 23,945 shares
Discretionary sales $340.1M 567 transactions · 584,648 shares

Largest single sale: $10.0M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

No open-market insider purchase on record.

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
MOSLEY WILLIAM D 2 fills CEO Sell 2,849 $862.13 $2.5M 297,548 −0.9% of holding
Romano Gianluca 2 fills EVP & CFO Sell 1,348 $862.13 $1.2M 29,620 −4.4% of holding
Teh Ban Seng EVP & Chief Commercial Officer Sell 10b5-1 663 $860.09 $570.2K 5,810 −10.2% of holding
Morris John Christopher 2 fills EVP & CTO Sell 572 $862.13 $493.4K 16,018 −3.4% of holding
MOSLEY WILLIAM D 26 fills CEO Sell 30,000 $816.28 $24.5M 324,810 −8.5% of holding
Conyers Yolanda Lee Director Sell 10b5-1 750 $815.11 $611.3K 3,351 −18.3% of holding
Lee James CI 29 fills EVP & CLO Sell 9,013 $794.84 $7.2M 9,320 −49.2% of holding
MOSLEY WILLIAM D 3 fills CEO Sell 18,138 $849.35 $15.4M 311,168 −5.5% of holding
Teh Ban Seng 26 fills EVP & Chief Commercial Officer Sell 9,782 $853.11 $8.3M 14,903 −39.6% of holding
Romano Gianluca 3 fills EVP & CFO Sell 9,076 $849.35 $7.7M 28,494 −24.2% of holding
Lee James CI 3 fills EVP & CLO Sell 3,939 $849.35 $3.3M 5,328 −42.5% of holding
Morris John Christopher 3 fills EVP & CTO Sell 3,516 $849.35 $3.0M 15,460 −18.5% of holding
Teh Ban Seng EVP & Chief Commercial Officer Sell 10b5-1 80 $835.54 $66.8K 14,992 −0.5% of holding
Teh Ban Seng 19 fills EVP & Chief Commercial Officer Sell 6,048 $842.97 $5.1M 20,880 −22.5% of holding
Morris John Christopher EVP & CTO Sell 523 $835.54 $437.0K 15,460 −3.3% of holding
Teh Ban Seng 2 fills EVP & Chief Commercial Officer Sell 7,361 $920.80 $6.8M 4,290 −63.2% of holding
Romano Gianluca 62 fills EVP & CFO Sell 21,611 $803.23 $17.4M 42,514 −33.7% of holding
Romano Gianluca 3 fills EVP & CFO Sell 10b5-1 600 $792.38 $475.4K 42,674 −1.4% of holding
MOSLEY WILLIAM D 47 fills CEO Sell 29,600 $817.01 $24.2M 325,437 −8.3% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 400 $819.41 $327.8K 312,197 −0.1% of holding
Morris John Christopher EVP & CTO Sell 10b5-1 168 $817.76 $137.4K 11,920 −1.4% of holding
Lee James CI EVP & CLO Sell 10b5-1 694 $877.45 $609.0K 347 −66.7% of holding
Lee James CI EVP & CLO Sell 542 $905.01 $490.7K 1,019 −34.7% of holding
MOSLEY WILLIAM D 43 fills CEO Sell 28,520 $914.57 $26.1M 341,197 −7.7% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 1,480 $919.64 $1.4M 319,380 −0.5% of holding
MOSLEY WILLIAM D CEO Sell 1,768 $880.19 $1.6M 327,517 −0.5% of holding
Teh Ban Seng EVP & Chief Commercial Officer Sell 10b5-1 989 $880.19 $870.5K 4,290 −18.7% of holding
Romano Gianluca EVP & CFO Sell 903 $880.19 $795.0K 42,860 −2.1% of holding
Morris John Christopher EVP & CTO Sell 10b5-1 898 $880.19 $790.4K 12,088 −6.9% of holding
Morris John Christopher EVP & CTO Sell 466 $880.19 $410.2K 12,986 −3.5% of holding
MOSLEY WILLIAM D 2 fills CEO Sell 2,855 $821.74 $2.3M 325,966 −0.9% of holding
Romano Gianluca 2 fills EVP & CFO Sell 1,350 $821.76 $1.1M 42,068 −3.1% of holding
Teh Ban Seng EVP & Chief Commercial Officer Sell 10b5-1 663 $821.86 $544.9K 4,290 −13.4% of holding
Morris John Christopher 2 fills EVP & CTO Sell 574 $821.66 $471.4K 12,510 −4.4% of holding
Arumugavelu Shankar Director Sell 1,000 $927.68 $927.7K 6,626 −13.1% of holding
BHATT PRAT Director Sell 10b5-1 1,000 $929.88 $929.9K 12,869 −7.2% of holding
MOSLEY WILLIAM D 48 fills CEO Sell 29,680 $911.54 $27.1M 352,991 −7.8% of holding
Conyers Yolanda Lee Director Sell 10b5-1 750 $885.33 $664.0K 4,101 −15.5% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 320 $916.77 $293.4K 337,051 −0.1% of holding
MOSLEY WILLIAM D 18 fills CEO Sell 29,880 $751.32 $22.4M 368,911 −7.5% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 120 $742.00 $89.0K 369,471 −0% of holding
Teh Ban Seng EVP & Chief Commercial Officer Sell 8,003 $817.28 $6.5M 3,691 −68.4% of holding
Teh Ban Seng 21 fills EVP & Chief Commercial Officer Sell 7,037 $814.43 $5.7M 10,528 −40.1% of holding
Teh Ban Seng EVP & Chief Commercial Officer Sell 10b5-1 520 $800.26 $416.1K 10,728 −4.6% of holding
Romano Gianluca EVP & CFO Sell 10b5-1 1,902 $770.00 $1.5M 40,945 −4.4% of holding
Romano Gianluca 29 fills EVP & CFO Sell 22,288 $774.39 $17.3M 64,815 −25.6% of holding
Romano Gianluca EVP & CFO Sell 10b5-1 200 $754.92 $151.0K 65,135 −0.3% of holding
Tilenius Stephanie 2 fills Director Sell 1,580 $766.61 $1.2M 10,704 −12.9% of holding
Morris John Christopher 13 fills EVP & CTO Sell 5,466 $738.57 $4.0M 17,180 −24.1% of holding
Lee James CI EVP & CLO Sell 10b5-1 697 $741.17 $516.6K 324 −68.3% of holding
Morris John Christopher EVP & CTO Sell 10b5-1 160 $731.65 $117.1K 17,420 −0.9% of holding
MOSLEY WILLIAM D 20 fills CEO Sell 19,900 $420.84 $8.4M 375,291 −5% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 100 $399.05 $39.9K 375,491 −0% of holding
MOSLEY WILLIAM D CEO Sell 24,584 $406.77 $10.0M 375,591 −6.1% of holding
Morris John Christopher EVP & CTO Sell 10b5-1 112 $377.44 $42.3K 17,580 −0.6% of holding
MOSLEY WILLIAM D 21 fills CEO Sell 19,126 $385.17 $7.4M 414,697 −4.4% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 874 $375.84 $328.5K 415,023 −0.2% of holding
Conyers Yolanda Lee Director Sell 10b5-1 750 $393.59 $295.2K 4,851 −13.4% of holding
Morris John Christopher EVP & CTO Sell 10b5-1 240 $410.00 $98.4K 16,566 −1.4% of holding
Chong Kian Fatt EVP Global Operations Sell 5,846 $416.48 $2.4M None left
MOSLEY WILLIAM D 15 fills CEO Sell 19,900 $429.41 $8.5M 429,856 −4.4% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 100 $401.10 $40.1K 429,956 −0% of holding
Geldmacher Jay L Director Sell 925 $448.03 $414.4K 223 −80.6% of holding
Teh Ban Seng 3 fills EVP & Chief Commercial Officer Sell 20,195 $442.29 $8.9M 13,873 −59.3% of holding
Lee James CI EVP & CLO Sell 10b5-1 673 $348.85 $234.8K 257 −72.4% of holding
Teh Ban Seng EVP & Chief Commercial Officer Sell 1,412 $299.31 $422.6K 13,693 −9.3% of holding
MOSLEY WILLIAM D 8 fills CEO Sell 19,200 $285.75 $5.5M 447,095 −4.1% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 800 $281.09 $224.9K 449,095 −0.2% of holding
Morris John Christopher EVP & CTO Sell 10b5-1 113 $291.89 $33.0K 14,250 −0.8% of holding
Teh Ban Seng EVP & Chief Commercial Officer Sell 2,010 $295.90 $594.8K 13,693 −12.8% of holding
Conyers Yolanda Lee Director Sell 10b5-1 750 $272.91 $204.7K 5,601 −11.8% of holding
MOSLEY WILLIAM D 7 fills CEO Sell 18,907 $271.25 $5.1M 464,168 −3.9% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 1,093 $267.27 $292.1K 464,575 −0.2% of holding
Romano Gianluca 12 fills EVP & CFO Sell 7,702 $266.95 $2.1M 54,882 −12.3% of holding
Romano Gianluca EVP & CFO Sell 10b5-1 300 $260.03 $78.0K 55,993 −0.5% of holding
Romano Gianluca 17 fills EVP & CFO Sell 54,021 $285.16 $15.4M 107,765 −33.4% of holding
Teh Ban Seng EVP & Chief Commercial Officer Sell 1,412 $288.98 $408.0K 12,041 −10.5% of holding
Lee James CI EVP & CLO Sell 10b5-1 697 $288.98 $201.4K 257 −73.1% of holding
Arumugavelu Shankar Director Sell 5,000 $294.56 $1.5M 7,626 −39.6% of holding
Teh Ban Seng EVP & Chief Commercial Officer Sell 6,000 $270.00 $1.6M 12,041 −33.3% of holding
MOSLEY WILLIAM D 12 fills CEO Sell 18,500 $263.50 $4.9M 482,768 −3.7% of holding
Tilenius Stephanie Director Sell 2,046 $266.41 $545.1K 12,244 −14.3% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 1,500 $254.44 $381.7K 484,168 −0.3% of holding
Geldmacher Jay L Director Sell 1,250 $269.10 $336.4K 1,148 −52.1% of holding
Chong Kian Fatt EVP Global Operations Sell 7,078 $272.14 $1.9M None left
Teh Ban Seng EVP & Chief Commercial Officer Sell 1,410 $225.56 $318.0K 18,041 −7.2% of holding
MOSLEY WILLIAM D 20 fills CEO Sell 19,400 $250.39 $4.9M 504,868 −3.7% of holding
MOSLEY WILLIAM D CEO Sell 10b5-1 600 $234.09 $140.5K 505,068 −0.1% of holding
Morris John Christopher EVP & CTO Sell 10b5-1 377 $211.26 $79.6K 13,238 −2.8% of holding
Morris John Christopher 4 fills EVP & CTO Sell 13,535 $196.05 $2.7M 19,178 −41.4% of holding
Morris John Christopher EVP & CTO Sell 10b5-1 1,812 $193.92 $351.4K 23,378 −7.2% of holding

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.