Every Form 4 that Seagate Technology Holdings plc (STX) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow STX and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full STX filings page.
Seagate Technology Holdings plc (STX) CEO William D. Mosley reported selling 11,002 ordinary shares in direct transactions on October 1, 2026. The sales were made under a Rule 10b5-1 trading plan adopted February 18, 2026. For transactions described in the footnotes, reported per-share prices are weighted averages.
Seagate Technology Holdings plc CEO William D. Mosley exercised 14,000 NQ options at $46.23 per share, acquiring 14,000 ordinary shares, and sold 18,998 ordinary shares on October 1, 2026. Reported per-share sale prices ranged from $898.0956 to $927.8963; each reported price reflects a weighted average for multiple trades. The reported NQ-option balance after the transaction was 83,100. All transactions were effected under a Rule 10b5-1 trading plan adopted February 18, 2026.
Seagate Technology Holdings plc (STX) reported that EVP & CTO John Christopher Morris exercised options for 915 Ordinary Shares on September 21, 2026 at an exercise price of $158.40 per share, leaving 17,378 options outstanding. On the same date, he sold 9,354 Ordinary Shares in a series of open-market or private transactions at prices generally in the mid‑$800s per share. All transactions were effected under a Rule 10b5-1 trading plan adopted on January 29, 2026.
Seagate Technology Holdings plc (STX) reports that EVP & CFO Gianluca Romano had 90,380 Performance Share Units granted on September 11, 2023 vest and settle into 90,380 Ordinary Shares on September 14, 2026, after the Compensation and People Committee certified achievement of the applicable performance conditions. On September 15, 2026, 49,983.5 Ordinary Shares were sold at $772.1573 per share pursuant to an issuer-mandated sell-to-cover transaction solely to satisfy tax withholding obligations. No Rule 10b5‑1 trading plan is reported in connection with these transactions.
Seagate Technology Holdings plc (STX) reported that EVP Global Operations Chong Kian Fatt14,470 Performance-Based Restricted Share Units14,470 Ordinary Shares25,093 Ordinary Shares
Seagate Technology Holdings plc (STX) reported that CEO and director William D. Mosley had performance-based restricted share units granted on September 11, 2023 vest on September 14, 2026 and settle into 177,000 Ordinary Shares following certification of the applicable performance conditions by the Compensation and People Committee. On September 15, 2026, Mosley then sold 97,889.25 Ordinary Shares at $772.1432 per share in sales made pursuant to an issuer-mandated sell-to-cover arrangement solely to satisfy tax withholding obligations.
Seagate Technology Holdings plc (STX) reported that EVP & Chief Commercial Officer Teh Ban Seng had 52,730 Performance Share Units vest and settle into the same number of Ordinary Shares on September 14, 2026. On September 15, 2026, he sold 52,730 Ordinary Shares in 24 open-market transactions at weighted-average prices generally between about $771 and $800 per share, all under a Rule 10b5-1 trading plan adopted on February 11, 2026.
Seagate Technology Holdings plc (STX) reported that EVP & CTO John Christopher Morris had performance-based equity awards vest and related tax sales. On September 14, 2026, 30,130 Performance Share Units granted on September 11, 2023 vested after the Compensation and People Committee certified achievement of the applicable performance conditions and were settled in 30,130 Ordinary Shares. On September 15, 2026, 15,465.5 Ordinary Shares were sold in the market, which the company states were sales made pursuant to an issuer-mandated sell-to-cover arrangement solely to satisfy tax withholding obligations.
Seagate Technology Holdings plc (STX) EVP & Chief Commercial Officer Teh Ban Seng reported an automatic vesting and related sale of shares. On September 11, 2026, 989 Restricted Share Units vested and were converted into 989 Ordinary Shares at $0.00 per share. On September 14, 2026, 989 Ordinary Shares were sold at $779.00 per share under a Rule 10b5-1 trading plan adopted on February 11, 2026.
Seagate Technology Holdings plc (STX) executive vice president of Global Operations Chong Kian Fatt exercised 678 restricted share units into 678 ordinary shares on September 11, 2026 at an exercise price of $0.00 per share under the 2022 Equity Incentive Plan, with no Rule 10b5-1 plan reported. Following this vesting event, he holds 10,623 ordinary shares directly and 2,714 restricted share units, which are scheduled to continue vesting in equal quarterly installments over a four-year period.
Seagate Technology Holdings plc (STX) reported that EVP & CTO John Christopher Morris had restricted share units convert into ordinary shares and then sold a portion of those shares to cover taxes. On September 11, 2026, 942 RSUs converted into 942 ordinary shares, and on September 14, 2026, 492.75 ordinary shares were sold in an issuer-mandated sell-to-cover transaction tied solely to tax withholding obligations. Following the RSU conversion, 3,768 restricted share units remain outstanding under the company’s 2022 Equity Incentive Plan.
Seagate Technology Holdings plc (STX) reported insider transactions by EVP & CFO Gianluca Romano, who sold a total of 5,555 Ordinary Shares in multiple open-market trades on September 11 and 14, 2026, at prices generally in the mid-$800s per share. The September 11 sales were effected pursuant to a Rule 10b5-1 trading plan adopted on April 30, 2026, and a separate sale of 955 shares at $781.24 on September 14, 2026 was an issuer-mandated sell-to-cover solely to satisfy tax withholding obligations. Romano also exercised 1,695 Restricted Share Units into Ordinary Shares and, following that vesting, is reported as holding 6,780 Restricted Share Units directly.
Seagate Technology Holdings plc (STX) reported that its EVP & CFO, Gianluca Romano, on September 11, 2026 exercised stock options covering 50,498 Ordinary Shares at strike prices of $64.31, $68.83, $101.34 and $158.40 per share and acquired the corresponding shares. On the same date he sold 45,898 Ordinary Shares in a series of open-market transactions at weighted-average prices generally between the high $818s and low $844s per share. All the option exercises and share sales were effected pursuant to a Rule 10b5-1 trading plan adopted on April 30, 2026.
Seagate Technology Holdings plc (STX) CEO and director William D. Mosley reported equity transactions involving ordinary shares and restricted share units. On September 11, 2026, 3,319 restricted share units were converted into 3,319 ordinary shares, and on September 14, 1,869.75 shares were sold in issuer-mandated sell-to-cover transactions solely to satisfy tax withholding obligations.
Seagate Technology Holdings plc (STX) executive Chong Kian Fatt, EVP Global Operations, reported the vesting and conversion of 581 restricted share units into 581 ordinary shares on September 9, 2026. An equal number of RSUs were removed as derivatives, so the filing shows no net change in share ownership from these transactions.
The RSUs relate to equity awards under Seagate’s equity incentive plans that vest over four years in quarterly installments. No transactions were reported as made under a Rule 10b5-1 trading plan, and no remaining derivative positions were listed in this filing.
Seagate Technology Holdings plc (STX) reported that EVP & Chief Commercial Officer Teh Ban Seng conducted several equity transactions. On September 9, 2026, he exercised Restricted Share Units that converted into 600 and 663 Ordinary Shares, respectively, at no cash exercise price. On September 10, 2026, he sold 663 Ordinary Shares at $860.09 per share in an open-market or private transaction pursuant to a Rule 10b5-1 trading plan adopted on February 11, 2026. The RSUs were granted under Seagate’s equity incentive plans with four-year vesting schedules.
Seagate Technology Holdings plc (STX) reported that EVP & CTO John Christopher Morris exercised restricted share units into 1,131 Ordinary Shares on September 9, 2026 and sold 572.25 Ordinary Shares on September 10, 2026 in open-market or private transactions at prices around $862 per share. No Rule 10b5-1 trading plan is reported, and the RSU grants vest over four-year periods under Seagate's equity incentive plans.
Seagate Technology Holdings plc (STX) reported that EVP & CFO Gianluca Romano sold a total of 1,348 Ordinary Shares on September 10, 2026 in open-market or private sales at prices around $862.13 per share. On September 9, 2026, previously granted Restricted Share Units (RSUs) under the 2022 Equity Incentive Plan were exercised, delivering 2,474 Ordinary Shares as part of multi-year vesting schedules.
Seagate Technology Holdings plc (STX) CEO and director William D. Mosley reported transactions involving company equity. On September 9, 2026 he exercised 5,230 Restricted Share Units into Ordinary Shares at a conversion price of $0.00 per share, tied to prior RSU grants under equity incentive plans. On September 10, 2026 he then sold an aggregate 2,849.25 Ordinary Shares in open-market or private transactions at prices around $862.13 per share, resulting in a net reported share disposition for this filing.
Seagate Technology Holdings plc (STX) CEO and director William D. Mosley exercised 14,000 stock options on September 1, 2026 at an exercise price of $46.23 per share, receiving 14,000 Ordinary Shares, and on the same date sold 30,000 Ordinary Shares in multiple transactions at weighted-average prices detailed between roughly the low-$800s per share. All transactions were effected pursuant to a Rule 10b5-1 trading plan adopted on February 18, 2026.
Seagate Technology Holdings plc (STX) director Yolanda Lee Conyers reported selling 750 Ordinary Shares on September 1, 2026 in an open-market or private transaction at a reported price of $815.11 per share. Following this sale, she directly holds 3,351 Ordinary Shares, and the transaction was effected under a Rule 10b5-1 trading plan adopted on August 4, 2025.
For Seagate Technology Holdings plc (STX), EVP & CLO James CI Lee reported an option exercise and related share sales. On 2026-08-24 he exercised 4,032 NQ stock options at an exercise price of $158.40 per share, receiving 4,032 Ordinary Shares. The underlying option grant under the 2022 Equity Incentive Plan vests over four years, with 25% vesting on August 20, 2026 and the remainder in equal monthly installments over the following three years.
On the same date he sold 9,013 Ordinary Shares in numerous transactions at prices reported per share, including weighted-average prices for trades executed within specified ranges, with individual reported prices spanning from about $774.84 to $816.96 per share. All reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted on January 29, 2026.
Seagate Technology Holdings plc (STX) reported that EVP & Chief Commercial Officer Teh Ban Seng sold 9,862 Ordinary Shares of the company on August 21, 2026 in 27 separate open-market transactions. The reported per‑share sale prices range from $835.48–$868.00, with many prices disclosed as weighted averages. All transactions were effected pursuant to a Rule 10b5-1 trading plan adopted on February 11, 2026.
Seagate Technology Holdings plc (STX) reported insider transactions by EVP & Chief Commercial Officer Teh Ban Seng on August 20, 2026. He exercised derivative awards covering 18,189 Ordinary Shares and sold 6,048 Ordinary Shares in multiple transactions, with sales executed under a Rule 10b5-1 trading plan adopted on February 11, 2026. The activity included exercises of Restricted Share Units into Ordinary Shares and an option for 6,048 shares at a $158.40 exercise price, as well as new grants of RSUs and nonqualified stock options with four-year vesting schedules.
Seagate Technology Holdings plc (STX) reports that EVP & CTO John Christopher Morris executed multiple equity transactions. On August 20, 2026 he exercised or converted 7,578 Ordinary Shares from RSUs and stock options and received new grants of RSUs and an NQ stock option. On August 20–21, 2026 he sold a total of 4,038.5 Ordinary Shares at per-share prices up to $849.3548, including an option exercise and sale effected pursuant to a Rule 10b5-1 trading plan adopted on January 29, 206.
Seagate Technology Holdings plc (STX) reported insider transactions by EVP & CLO James CI Lee involving equity awards, option grants, exercises, and sales. On August 21, 2026, he sold 3,938.75 Ordinary Shares in open-market or private transactions at 849.3548 per share. On August 20, 2026, 8,920 Restricted Share Units were exercised into Ordinary Shares at no cost. On the same date he received several new equity grants: RSU awards of 1,420 and 1,343 plus 403 additional RSUs, and 3,788 NQ Options with an exercise price of 850.2400 per share expiring in 2033, all subject to multi-year vesting schedules.
Seagate Technology Holdings plc (STX) reported equity compensation changes for EVP Global Operations Chong Kian Fatt on August 20, 2026. He exercised or converted previously granted restricted share units into a total of 6,846 Ordinary Shares. He also received new grants of restricted share units covering 1,420, 1,036 and 311 shares, and a grant of 3,788 NQ stock options with an exercise price of 850.2400 per share expiring on August 20, 2033. The RSU and option awards vest over four-year and one-year schedules, in each case subject to his continuous employment.
Seagate Technology Holdings plc (STX) reported insider equity activity by EVP & CFO Gianluca Romano. On August 20, 2026, Romano acquired 16,907 Ordinary Shares through vesting/settlement of Restricted Share Units and was granted 6,612 new RSUs plus 11,360 nonqualified stock options with an exercise price of $850.2400 per share. On August 21, 2026, he sold a total of 9,076.25 Ordinary Shares at $849.3548 per share in open-market or private transactions; post-transaction share holdings are not stated.
Seagate Technology Holdings plc (STX) CEO William D. Mosley reported multiple equity transactions. On August 21, 2026 he sold 18,138.5 Ordinary Shares in open-market or private transactions at $849.3548 per share. On August 20, 2026 he exercised Restricted Share Units into Ordinary Shares at no cost and received new RSU awards with multi-year vesting schedules, plus a grant of 31,856 NQ Stock Options at a $850.2400 exercise price expiring August 20, 2033.
Seagate Technology Holdings plc executive Teh Ban Seng, EVP & Chief Commercial Officer, reported option exercises and share sales on August 13, 2026. He exercised non-qualified options for 6,002 Ordinary Shares at strike prices of $68.83, $64.31, and $101.34, acquiring an equivalent number of shares. He then sold 7,361 Ordinary Shares in open-market or private transactions at weighted average prices of $920.14 and $923.7291, with one sale executed in multiple trades between $923.43 and $923.77. The options exercised were granted under the company’s equity incentive plans with four-year vesting schedules and monthly vesting after initial one-quarter vesting dates.
Seagate Technology Holdings plc executive vice president and CFO Gianluca Romano reported open-market sales of 880 Ordinary Shares on August 7, 2026. The reported per-share sale prices ranged from $835.7700 to $850.0417 across multiple trades. All transactions were effected pursuant to a Rule 10b5-1 trading plan adopted on April 30, 2026, and some blocks reflect weighted average sale prices for executions within specified price ranges.
Seagate Technology Holdings plc executive vice president and CFO Gianluca Romano reported open-market sales of 14,091 Ordinary Shares of STX on August 7, 2026. The 28 sale transactions were executed at weighted average prices within ranges generally spanning about $799 to $832 per share, and all were effected pursuant to a Rule 10b5-1 trading plan adopted on April 30, 2026. Each reported price reflects a weighted average across multiple trades within the stated range for that transaction.
Seagate Technology Holdings plc executive vice president and chief financial officer Gianluca Romano reported open-market sales of 7,240 Ordinary Shares on August 7, 2026. The shares were sold in multiple tranches at weighted-average prices generally ranging from about $762.99 to $798.97 per share. All reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted on April 30, 2026, and prices disclosed for each line item represent weighted-average sale prices for multiple trades within the stated ranges.
Seagate Technology Holdings plc executive John Christopher Morris, EVP & CTO, reported selling 168 Ordinary Shares on August 3, 2026 at $817.76 per share. After this open-market or private transaction, he held 11,920.25 shares directly. The sale was executed under a Rule 10b5-1 trading plan adopted on January 29, 2026.
Seagate Technology Holdings plc CEO and director William D. Mosley reported sale transactions totaling 17,080 Ordinary Shares on August 3, 2026, across 19 trades at weighted-average prices between $818.84 and $837.99 per share. All transactions were executed under a Rule 10b5-1 trading plan adopted on February 18, 2026.
Seagate Technology Holdings plc CEO William D. Mosley exercised 14,000 stock options at $46.23 on August 3, 2026, receiving 14,000 ordinary shares, then sold 12,920 shares in multiple trades at weighted-average prices within $783.83–$818.58 per share. All transactions were executed under a Rule 10b5-1 trading plan adopted on February 18, 2026. Following the option exercise, he continued to hold 111,100 options.
Seagate Technology Holdings plc executive James CI Lee, EVP & CLO, reported selling 694 Ordinary Shares on July 30, 2026 at $877.45 per share in a sale transaction executed under a Rule 10b5-1 trading plan adopted on January 29, 2026.
After this sale, he directly holds 346.75 Ordinary Shares, which include 22 shares purchased on July 31, 2026 through the issuer's Employee Stock Purchase Plan, an acquisition exempt from reporting under Rule 16b-3.
Seagate Technology Holdings plc EVP & CLO James CI Lee exercised 1,237 Restricted Share Units into the same number of Ordinary Shares on July 22, 2026, from a grant under the 2022 Equity Incentive Plan, leaving 9,902 RSUs outstanding. On July 23, 2026, he sold 542.25 Ordinary Shares at $905.0087 per share in an issuer-mandated sell-to-cover transaction solely to satisfy tax withholding obligations.
Seagate Technology Holdings plc CEO William D. Mosley reported selling 9,343 Ordinary Shares of STX in open-market transactions. The sales occurred on July 1, 2026 at prices referenced as weighted averages for ranges between $919.19 and $934.61, according to the footnotes.
All transactions were carried out under a pre-arranged Rule 10b5-1 trading plan adopted on February 18, 2026, indicating they were scheduled in advance. Following the reported trades, Mosley directly held 311,517 Ordinary Shares of Seagate.
Seagate Technology Holdings plc CEO William D. Mosley reported a series of insider trades in Ordinary Shares. On July 1, 2026, he executed open-market sales totaling 20,657 shares at prices generally around $890–$920 per share, in multiple transactions.
These sales were carried out under a pre-arranged Rule 10b5-1 trading plan adopted on February 18, 2026. On the same date, Mosley also exercised options to acquire 14,000 Ordinary Shares at an exercise price of $46.23 per share. Following these transactions, he directly held 320,860 Ordinary Shares and 125,100 NQ Options.
Seagate Technology Holdings plc EVP & CTO John Christopher Morris reported several equity transactions. On June 12, 2026, he sold a total of 1,364 Ordinary Shares in open-market transactions at an average price of $880.19 per share under a Rule 10b5-1 trading plan adopted on January 29, 2026. The day before, on June 11, 2026, he exercised 942 restricted share units into the same number of Ordinary Shares at $0.00 per share. After these transactions, he directly owns 12,088.25 Ordinary Shares and 4,710 restricted share units granted under the company’s 2022 Equity Incentive Plan, which vest quarterly over a total four-year period, subject to his continued employment.
Seagate Technology Holdings plc EVP & Chief Commercial Officer Teh Ban Seng exercised and sold shares in a routine, pre-planned transaction. On June 11, 2026, he exercised 989 Restricted Share Units into the same number of Ordinary Shares at $0.00 per share. On June 12, 2026, he executed an open-market sale of 989 Ordinary Shares at an average price of $880.19 per share under a Rule 10b5-1 trading plan adopted on February 11, 2026. After the sale, he directly owned 4,290 Ordinary Shares and held 4,945 Restricted Share Units from the referenced grant, which continues to vest over a four-year period, subject to continued employment.
Seagate Technology Holdings plc executive Chong Kian Fatt exercised restricted share units into ordinary shares in a routine compensation-related move. On June 11, 2026, he converted 678 Restricted Share Units into 678 Ordinary Shares, with no sale of stock reported.
The Restricted Share Units were granted under the Seagate Technology Holdings plc 2022 Equity Incentive Plan and vest over four years, with one-quarter vesting starting on September 11, 2024 and the remainder in equal quarterly installments. Following the transaction, Chong directly holds 2,518 Ordinary Shares and 3,392 Restricted Share Units.
Seagate Technology Holdings plc EVP & CFO Gianluca Romano reported both an equity award vesting and a small open-market sale of company stock. On June 11, 2026, he exercised 1,695 Restricted Share Units at a conversion price of $0.00, receiving the same number of ordinary shares as part of a prior equity grant that vests over four years under the 2022 Equity Incentive Plan.
On June 12, 2026, Romano then completed an open-market sale of 903.25 ordinary shares at an average price of $880.1873 per share. Following this sale, he held 42,860.25 ordinary shares directly, and the RSU award referenced in the footnote continues to vest in quarterly installments, subject to his continued employment.
Seagate Technology Holdings plc CEO William D. Mosley reported an open-market sale and related equity award vesting in the company’s ordinary shares. On June 12, 2026, he sold 1,768.25 ordinary shares at an average price of $880.1888 per share.
These shares came from the June 11, 2026 vesting and conversion of 3,319 restricted share units granted under Seagate’s 2022 Equity Incentive Plan. After these transactions, Mosley holds 327,517 ordinary shares directly and 16,595 restricted share units, indicating he retained a substantial equity position alongside the partial sale.
Seagate Technology Holdings plc executive Chong Kian Fatt reported acquiring shares through the vesting and conversion of restricted share units (RSUs), with no open-market buying or selling. On June 9, 2026, RSUs converted into 581 Ordinary Shares at a conversion price of $0.00 per share, reflecting equity compensation rather than cash transactions.
The RSUs were granted under the Seagate Technology Holdings plc 2022 Equity Incentive Plan. One RSU grant vested as to one-quarter of the underlying shares on September 9, 2023, with the remaining portion scheduled to vest in equal quarterly installments over the following three years. A separate RSU grant began vesting one-quarter on September 9, 2025 on a similar four-year schedule, all subject to the executive’s continuous employment.
Seagate Technology Holdings plc executive Teh Ban Seng exercised restricted share units and sold a portion of the resulting shares. On June 9, 2026 he converted 1,262 Restricted Share Units into Ordinary Shares at a conversion price of $0.00 per share as part of equity compensation vesting.
On June 10, 2026 he then sold 663 Ordinary Shares in an open-market transaction at $821.86 per share under a pre-arranged Rule 10b5-1 trading plan adopted on February 11, 2026. After these transactions, he held 4,290 Ordinary Shares directly, along with 600 remaining Restricted Share Units subject to multi-year vesting schedules under Seagate’s 2022 Equity Incentive Plan.
Seagate Technology Holdings plc EVP & CTO John Christopher Morris reported RSU vesting and related share sales. On June 9, he exercised restricted share units to acquire a total of 1,130 Ordinary Shares at a conversion price of 0.0000, in connection with grants under the 2022 Equity Incentive Plan that vest over four years.
On June 10, he sold 573.75 Ordinary Shares in open-market transactions at prices between 821.6535 and 821.6642 per share. Following these transactions, he holds 12,199 Ordinary Shares directly, along with remaining unvested RSUs scheduled to continue vesting subject to his continuous employment.
Seagate Technology Holdings plc CEO William D. Mosley reported a mix of equity compensation exercises and share sales. On June 9, 2026, he exercised restricted share units into a total of 5,230 Ordinary Shares at a conversion price of $0.00 per share, reflecting RSUs awarded under the company’s 2022 Equity Incentive Plan that vest over four years. On June 10, 2026, he executed two open-market sales totaling 2,854.75 Ordinary Shares at prices of $821.7476 and $821.7410 per share. After these transactions, Mosley directly owned 324,869.5 Ordinary Shares.
Seagate Technology Holdings plc EVP & CFO Gianluca Romano reported routine equity transactions involving company ordinary shares. On June 9, 2026, he exercised restricted share units, acquiring 1,515 and 959 ordinary shares at a conversion price of 0.0000 per share through derivative exercises.
On June 10, 2026, Romano executed open-market sales of 827 and 523.5 ordinary shares at prices of 821.7706 and 821.7308 per share. After these transactions, he directly held 41,380.5 ordinary shares. The RSUs were granted under Seagate’s 2022 Equity Incentive Plan and vest over a four-year period, subject to his continuous employment.