Welcome to our dedicated page for Seagate Technology Hldngs Plc SEC filings (Ticker: STX), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The SEC filings page for Seagate Technology Holdings plc (NASDAQ: STX) provides access to the company’s official regulatory disclosures as a public limited company incorporated in Ireland and listed on The NASDAQ Global Select Market. These documents offer detailed insight into Seagate’s mass-capacity data storage business, financial condition, governance, and capital structure.
Through periodic and current reports such as Form 8-K, Seagate reports results of operations and financial condition, including quarterly and annual earnings, cash flow from operations, and free cash flow, along with reconciliations between GAAP and non-GAAP measures. 8-K filings also cover events like quarterly cash dividend declarations and the availability of supplemental financial information.
Seagate’s filings document financing and debt transactions, including exchange offers for multiple series of senior notes, issuance of new notes by subsidiaries, registration rights agreements, and privately negotiated exchanges of exchangeable senior notes for cash and ordinary shares. Related items describe supplemental indentures, covenant changes, and circumstances under which additional interest may accrue if registration obligations are not met.
Corporate governance topics appear in filings such as DEF 14A definitive proxy statements and governance-related 8-Ks. These materials outline the election of directors, advisory votes on executive compensation, approvals of equity and employee stock purchase plans, auditor ratification, and shareholder voting results. They also describe authorities granted to the board under Irish law to allot and issue shares, opt out of statutory pre-emption rights, and manage treasury shares.
On this page, users can review Seagate’s SEC filings in one place, while AI-powered tools summarize key points from forms such as 8-K and proxy statements. This helps readers quickly understand how Seagate reports its financial performance, manages its capital structure, and discloses governance decisions that may be relevant to STX shareholders and analysts.
Seagate Technology (STX): Form 4 insider transaction. EVP & Chief Commercial Officer Ban Seng Teh exercised options for 532 shares at $68.83 and 878 shares at $64.31 on 10/13/2025, then sold 1,410 ordinary shares at $225.56. Following these transactions, he held 18,041 shares directly. All transactions were made under a Rule 10b5-1 trading plan adopted on October 31, 2024.
Seagate Technology Holdings plc issued a definitive additional proxy supplement that amends two sections of its 2025 proxy. It replaces the “Potential Payments Upon Termination of Employment” table to revise amounts for Chief Commercial Officer Ban Seng Teh and updates the beneficial ownership table to revise the number of options exercisable within 60 days for Chief Financial Officer Gianluca Romano.
Based on a June 27, 2025 share price assumption of $141.44, estimated totals for a Qualifying Termination within a change in control period are $64,203,773 for CEO William D. Mosley, $34,768,981 for CFO Gianluca Romano, and $17,660,530 for CCO Ban Seng Teh. As context, ordinary shares outstanding were 212,967,321 as of August 22, 2025.
William D. Mosley, who is listed as a Director and CEO of Seagate Technology Holdings plc (STX), reported multiple open-market sales of ordinary shares on 10/01/2025 under a Rule 10b5-1 trading plan adopted on February 20, 2025. The Form 4 lists 22 separate sale entries totaling 20,000 shares sold at weighted-average prices for each lot. The reported sale prices across the transactions range from a weighted average near $234 up to $258.15, and the explanatory notes state execution price ranges from $233.76 to $258.15. Following the last reported trade, the filings show the reporting person beneficially owned 485,668 ordinary shares.
Form 144 notice for Seagate Technology Holdings plc (STX) discloses a proposed sale of 20,000 common shares through Morgan Stanley Smith Barney LLC on NASDAQ with an aggregate market value of $4,721,200 and shares outstanding of 212,677,178. The shares were acquired as RSUs/PSUs on 09/09/2024 (20,000 shares) with payment recorded the same day. The filing also reports two Rule 10b5-1 sales attributed to William Mosley: 20,000 shares sold on 09/02/2025 for $3,379,482 and 20,000 shares sold on 08/01/2025 for $3,074,962. The filer represents no undisclosed material adverse information and indicates reliance on 10b5-1 where applicable.
Seagate Technology Holdings plc (STX) reporting person John C. Morris (EVP & CTO) disclosed a sale of ordinary shares on 09/16/2025. The filing shows 377 shares were sold at a price of $211.26 per share under a Rule 10b5-1 trading plan adopted on June 1, 2025. After the transaction the reporting person beneficially owned 13,238 shares, held directly. The Form 4 was signed by an attorney-in-fact on 09/17/2025. The filing contains no derivative transactions and provides only the non-derivative sale details and the 10b5-1 disclosure.
Seagate Technology Holdings plc (STX) Form 144 notifies a proposed sale under Rule 144 of 377 common shares through Morgan Stanley Smith Barney on NASDAQ with an aggregate market value of $79,592.24. The shares were acquired as Performance Stock Units on 09/14/2025 and payment/settlement is recorded the same day. The filer also reported 10b5-1 sales by John Morris totaling 15,347 shares on 09/12/2025 for gross proceeds of $3,004,950.76. The filing includes the required representation about absence of undisclosed material adverse information.
William D. Mosley, CEO and Director of Seagate Technology Holdings plc (STX), reported several equity transactions in a Form 4 filed for the period surrounding September 11–14, 2025. The filing shows awards and vesting of restricted share units and performance-based restricted share units, plus related disposals.
The report records acquisitions of 3,319 ordinary shares on 09/11/2025 and 65,170 ordinary shares on 09/14/2025, tied to restricted share units and performance share units that vested. Offsetting disposals total 34,609 shares (1,678 shares disposed at $196.81 on 09/11/2025 and 32,931 shares disposed at $195.99 on 09/14/2025). Following the reported transactions, Mosley beneficially owned 538,599 ordinary shares.
Seagate Technology Holdings plc (STX) insider report for John C. Morris shows multiple transactions in September 2025 under an existing Rule 10b5-1 plan and equity awards vesting. On 09/11/2025 the reporting person acquired 941 ordinary shares via restricted share units and on 09/14/2025 6,935 performance-based restricted share units vested and were acquired. Concurrently, the reporting person sold multiple blocks of ordinary shares across 09/11/2025 and 09/12/2025 at weighted average prices ranging roughly from $193.33 to $198.22, with several specific weighted-average prices disclosed.
The Form 4 discloses that many sales on 09/11/2025 were executed pursuant to a Rule 10b5-1 trading plan adopted June 1, 2025. Following the reported transactions, beneficial ownership declined from 25,620 shares before sales to 13,615 shares after the final reported sale on 09/14/2025, with derivative holdings shown for vested units totaling 7,535 RSUs.
Seagate Technology Holdings plc (STX) reporting shows Kian Fatt Chong, EVP Global Operations, received equity awards that vested in September 2025. On 09/11/2025 he was credited with 678 Ordinary Shares related to restricted share units and on 09/14/2025 2,016 Ordinary Shares vested after the Compensation Committee determined performance conditions were met. The filing lists 5,062 and 7,078 Ordinary Shares as the amounts beneficially owned following the 09/11 and 09/14 transactions, respectively. The Form 4 is signed by an attorney-in-fact on behalf of Chong on 09/15/2025. The awards were granted under the Seagate Technology plc 2022 Equity Incentive Plan.
Seagate Technology Holdings plc (STX): This Form 4 reports insider transactions by Ban Seng Teh, EVP & Chief Commercial Officer. On 09/11/2025 the reporting person acquired a mix of restricted share units and non-qualified options that vested or were exercised (989 RSUs; 533 NQ options at $68.83; 313 NQ options at $87.34; 879 NQ options at $64.31) and sold 3,732 ordinary shares at $193.30, leaving 4,172 shares owned after that sale. On 09/14/2025 the Compensation Committee certified performance conditions and 13,869 performance-based restricted share units vested and were acquired. A Rule 10b5-1 trading plan, adopted October 31, 2024, governed the option exercises and the sale.