STX Seagate Technology Holdings plc Insider Trading

CEO William D Mosley sells 9,343 shares of Seagate (STX) for $8,636,883.32 under pre-arranged 10b5-1 plan on 2026-07-01

William D Mosley executed 15 separate sales totaling 9,343 shares for $8,636,883.32 at prices ranging from $919.64 to $936.36, reducing his holdings by 2.9% to 311,517 shares. This transaction was part of a pre-arranged 10b5-1 trading plan adopted on 2026-02-18, making it scheduled rather than discretionary. The stock has since declined 28.4% from its 52-week high of $1145.00 to a current price of $820.16, and the blended transaction price of $924.42 now sits above current market levels. Seagate's fundamentals show $3.1B in latest quarterly revenue and net income of $748.0M, with annual growth of 38.9%, though the elevated P/E of 118.35 suggests significant market expectations built into valuation.

CEO William D Mosley sold 20,657 shares at STX for $18,807,774.81 via 29 transactions on 2026-07-01 under 10b5-1 plan

CEO William D Mosley executed 29 separate sales totaling 20,657 shares for $18,807,774.81 at a blended average price of $910.48 on 2026-07-01, reducing his non-derivative holdings from 341,517 shares to 320,860 shares (-6.0%). This transaction is part of a pre-arranged 10b5-1 trading plan adopted on 2026-02-18, meaning the sales were scheduled rather than discretionary. The stock currently trades at $820.16, representing a -28.4% decline from the 52-week high of $1,145.00 and a -11.5% decline over the past 30 days. The CEO retains 125,100 shares through derivative holdings (NQ Options), preserving meaningful ongoing exposure to the company despite the partial reduction in direct holdings.

EVP & CTO John Christopher Morris sells 1,364 shares at $880.19 ($1.2M) via scheduled 10b5-1 plan; retains 12,088 shares plus 4,710 RSUs.

John Christopher Morris executed 2 separate sales totaling 1,364 shares for $1,200,579.16 on 2026-06-12 at an average price of $880.19, reducing his non-derivative holdings by 10.1% to 12,088 shares. This transaction is part of a pre-arranged 10b5-1 trading plan adopted on 2026-01-29, indicating these sales are scheduled and not discretionary. Morris retains meaningful non-derivative holdings alongside 4,710 restricted share units, preserving significant equity stake in the company. The stock has appreciated 28.1% over the past 30 days and is trading at $1018.80 currently, 1.3% below its 52-week high of $1032.52, reflecting strong recent momentum in Seagate's shares. The scheduled nature of this sale through a pre-arranged plan removes any timing signal regarding the insider's confidence in the stock's direction.

CFO Gianluca Romano sold 903 STX shares at $880.19 on 2026-06-12 for $795.0K; retains 42.9K shares plus 8,475 RSUs.

Gianluca Romano, EVP & CFO, sold 903 shares at $880.19, reducing his non-derivative holdings from 43.8K to 42.9K shares while maintaining 8,475 RSUs. This marks his sixth sale of STX stock within a six-day window (2026-05-06 through 2026-06-12), consistent with a scheduled vest-and-sell program rather than a discretionary trading decision. His cross-ticker track record shows 20 prior sales averaging +10.7% 30-day returns, though the timing pattern on his five recent STX sales cannot yet be assessed at the 90-day mark. The stock has risen +28.1% over 30 days and +141.9% over 90 days, trading near its 52-week high of $1032.52, while fundamental metrics show strong revenue growth of +38.9% annually and $748.0M net income on $3.1B quarterly revenue; the P/E of 147.01 reflects elevated valuation.

CEO William D Mosley sold 1,768 shares of STX at $880.19 on 2026-06-12 for $1,556,393.85

William D Mosley, CEO of Seagate Technology, sold 1,768 shares at $880.19, reducing his non-derivative holdings from 329,285 to 327,517 shares (a -0.5% reduction). This follows a cluster of five prior sales on 2026-06-01, suggesting continued periodic reductions in a single-ticker context. While STX has appreciated significantly over the 90-day window (+141.9%) and 30-day window (+28.1%), and currently trades at $1018.80 (near its 52-week high of $1032.52), the prior outcomes from his same-ticker history at STX are not yet measurable, providing no timing pattern to assess. With 16,595 restricted share units remaining in Table II derivatives, the CEO retains substantial equity upside. The company's 38.9% annual revenue growth and $748.0M quarterly net income reflect strong operational momentum, though the elevated P/E of 147.01 reflects current market valuation.

STX CFO Gianluca Romano sold 1,350 shares for $1,109,780.36 on 2026-06-10; retains 42,068 non-derivative shares plus 14,602 derivative holdings.

Gianluca Romano, EVP & CFO of Seagate, executed 2 separate sales totaling 1,350 shares for $1,109,780.36 at an average price of $821.76, reducing his non-derivative holdings by 3.1% to 42,068 shares. The current price of $868.09 stands 10.2% below the 52-week high of $966.80, and his prior 5 sales at STX (all in May 2026) showed 30-day returns ranging from +9.4% to +11.5%, indicating his recent trades at this ticker have consistently preceded near-term gains. Romano retains substantial derivative holdings (959 and 13,643 restricted share units), meaning his overall position remains material despite the non-derivative reduction. The transaction occurs within a context of strong company fundamentals: $3.1B quarterly revenue, $748.0M net income, and +38.9% annual revenue growth, though the P/E of 125.27 reflects elevated valuation expectations relative to near-term earnings.

STX CEO William D Mosley sold 2,854 shares for $2,345,873.82 on 2026-06-10; retains 325,966 shares post-transaction.

William D Mosley, CEO of Seagate Technology Holdings plc, filed 2 separate sales totaling 2,854 shares for $2,345,873.82 at a blended average price of $821.74 on 2026-06-10, reducing his non-derivative holdings by 0.9% to 325,966 shares. The insider retains material derivative holdings of 24,558 shares through restricted share units, indicating an ongoing stake in the company. The sales occurred as STX traded at $868.09 (current), 10.2% below its 52-week high of $966.80, while the broader trend shows a 90-day gain of 126.2% and 30-day appreciation of 7.3%. Mosley's cross-ticker track record includes 20 prior sells, though same-ticker outcomes at STX remain unmeasurable (5 prior STX sells on 2026-06-01 with no 30-day or 90-day data yet available). The company reports strong fundamentals: $3.1B latest quarterly revenue, $748.0M net income, and 38.9% annual revenue growth, though valuation is stretched at a P/E of 125.27. This represents a routine partial reduction of non-derivative holdings by an executive with substantial remaining direct and derivative exposure to the company.

CEO William D Mosley sells 13,780 shares for $12,746,389.45 via 10b5-1 plan; stock up 27.5% in 30d.

William D Mosley, CEO of Seagate Technology Holdings plc, executed 20 separate sales totaling 13,780 shares for $12,746,389.45 on 2026-06-01, reducing his holding by 4.1% to 323,591 shares. This sale was conducted under a pre-arranged 10b5-1 trading plan adopted on 2026-02-18, meaning it was scheduled rather than discretionary. The stock has risen 27.5% over the prior 30 days and 147.1% over the prior 90 days, and Seagate's revenue grew 38.9% year-over-year with net income of $748,000,000.00 in the latest quarter. His prior five sales at STX on 2026-05-20 each showed positive returns in the 20.7%–23.1% range over their respective 30- and 90-day windows, consistent with a pattern of trading into strength. Because this sale is governed by a 10b5-1 plan adopted in February, it reflects a pre-set schedule rather than a real-time market judgment, reducing the interpretive weight typically assigned to insider-initiated timing.

STX CEO William D Mosley sells 16,220 shares for $14,601,434.70 via 29 transactions; scheduled 10b5-1 plan

William D Mosley, CEO of Seagate Technology Holdings plc, executed 29 separate sales totaling 16,220 shares for $14,601,434.70 on 2026-06-01 under a pre-arranged 10b5-1 trading plan adopted on 2026-02-18. This is a scheduled, non-discretionary transaction, so no timing inference is appropriate. Post-transaction, Mosley retains 337,371 shares in non-derivative holdings while maintaining 139,100 shares through derivative securities (NQ Options), representing a -4.6% reduction in the non-derivative portion. The blended average sale price of $900.21 compares favorably to the current price of $926.61, though the stock is -1.5% from its 52-week high of $940.79. Mosley's cross-ticker track record across 20 prior sells shows an average 90-day return of +27.3%; at STX specifically, his five prior sales on 2026-05-20 posted 90-day returns between +20.7% and +23.1%. The continued holdings in both share and derivative form, combined with execution through a pre-scheduled plan rather than discretionary action, indicate the transaction reflects liquidity management within a formal compliance framework rather than a signal of conviction or concern about the company's prospects.

CEO William D Mosley sells 30,000 shares ($22.5M) via scheduled 10b5-1 plan; holdings drop to 339.6K shares.

William D Mosley executed 19 separate sales totaling 30,000 shares for $22,538,568.50 on 2026-05-20 under a pre-arranged 10b5-1 trading plan adopted on 2026-02-18, reducing his holdings from 369.6K to 339.6K shares. The blended average sale price was $751.29, while the current stock price stands at $810.46 and the 30-day change is +44.8% and 90-day change is +97.1%, indicating substantial recent appreciation. Because this transaction is part of a scheduled 10b5-1 plan, it reflects execution of a predetermined schedule rather than a discretionary trading decision, and therefore timing observations are not applicable to this filing. The sale represents an 8.1% reduction of his pre-transaction holdings.