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Every insider trade Ban Seng Teh has disclosed

EVP & Chief Commercial Officer · Seagate Technology Holdings plc (STX)

Key points

  • Ban Seng Teh has disclosed 16 Form 4 transactions between Aug 1, 2025 and Aug 21, 2026: 16 sales worth $49.9M and no open-market buys.
  • Of the 16 sales, 11 were under a pre-scheduled 10b5-1 plan, leaving 5 discretionary sales worth $19.5M.
  • The largest single transaction is a sell of 15,560 shares of STX worth $12.7M, filed May 14, 2026.
  • Insider selling is not on its own a bearish signal — plans, taxes and diversification all drive sales. This page is a record of disclosed trades, not investment advice.
  • The most recent filing on record was made Aug 24, 2026. Insiders file within two business days of a trade.

This is the public record of open-market stock transactions Ban Seng Teh has reported to the SEC on Form 4 as EVP & Chief Commercial Officer of Seagate Technology Holdings plc (STX). Every figure below is the reported share count multiplied by the reported price, so the dollar amounts are exact disclosed values rather than estimates. It is a record of what has been filed, not a portfolio or a recommendation, and insider selling in particular is routine and rarely a signal on its own.

Buying vs selling at a glance

MeasureOpen-market buysSales
Transactions016
Total disclosed value$0$49.9M
Discretionary (own call)05 ($19.5M)

Most of Ban Seng Teh's sales were pre-scheduled or tax-related rather than discretionary, which further weakens any read of them as a market call.

Every disclosed transaction

All 16 disclosed transactions, newest filing first.

StockActionSharesPriceValueTradedFiled
STX Seagate Technology Holding▼ Sell 10b5-1 plan9,862$852.97$8.4MAug 21, 2026Aug 24, 2026
STX Seagate Technology Holding▼ Sell 10b5-1 plan6,048$842.97$5.1MAug 20, 2026Aug 24, 2026
STX Seagate Technology Holding▼ Sell own call7,361$920.80$6.8MAug 13, 2026Aug 14, 2026
STX Seagate Technology Holding▼ Sell 10b5-1 plan989$880.19$871KJun 12, 2026Jun 15, 2026
STX Seagate Technology Holding▼ Sell 10b5-1 plan663$821.86$545KJun 10, 2026Jun 11, 2026
STX Seagate Technology Holding▼ Sell 10b5-1 plan15,560$815.42$12.7MMay 13, 2026May 14, 2026
STX Seagate Technology Holding▼ Sell own call20,195$442.29$8.9MJan 29, 2026Feb 2, 2026
STX Seagate Technology Holding▼ Sell 10b5-1 plan1,412$299.31$423KJan 12, 2026Jan 14, 2026
STX Seagate Technology Holding▼ Sell 10b5-1 plan2,010$295.90$595KDec 11, 2025Dec 12, 2025
STX Seagate Technology Holding▼ Sell 10b5-1 plan1,412$288.98$408KNov 11, 2025Nov 12, 2025
STX Seagate Technology Holding▼ Sell own call6,000$270.00$1.6MNov 5, 2025Nov 5, 2025
STX Seagate Technology Holding▼ Sell 10b5-1 plan1,410$225.56$318KOct 13, 2025Oct 15, 2025
STX Seagate Technology Holding▼ Sell 10b5-1 plan3,732$193.30$721KSep 11, 2025Sep 15, 2025
STX Seagate Technology Holding▼ Sell own call6,781$191.53$1.3MSep 10, 2025Sep 11, 2025
STX Seagate Technology Holding▼ Sell 10b5-1 plan1,724$151.61$261KAug 11, 2025Aug 12, 2025
STX Seagate Technology Holding▼ Sell own call5,905$155.00$915KAug 1, 2025Aug 4, 2025

Questions about this record

How many shares has Ban Seng Teh bought and sold?

Ban Seng Teh has disclosed 16 Form 4 transactions in the record we track, from Aug 1, 2025 to Aug 21, 2026: 16 sales worth $49,883,905 and no open-market purchases. Each figure is the reported share count multiplied by the reported price, so these are exact disclosed amounts, not estimates.

Is Ban Seng Teh selling a bearish signal?

Not on its own. Insiders sell for many reasons that have nothing to do with a view on the stock — diversification, taxes, estate planning, or a pre-scheduled plan set up months earlier. Of the 16 sales on this record, 11 were made under a Rule 10b5-1 plan and 0 were automatic tax withholding on vesting shares, leaving 5 that were the insider's own discretionary decision (worth $19,544,063). Buying is the cleaner signal, because there is only one reason to buy. This page is a record, not a recommendation.

What is Ban Seng Teh's role?

Ban Seng Teh files as EVP & Chief Commercial Officer of Seagate Technology Holdings plc (STX). That role is taken from the Form 4 filings themselves. A Form 4 is filed with the SEC within two business days of an insider buying or selling their own company's stock.

What was Ban Seng Teh's largest single transaction?

The largest single transaction on record is a sell of 15,560 shares of STX at $815.42, worth $12,687,979, filed May 14, 2026.

How current is this record?

The most recent Form 4 here was filed Aug 24, 2026. Insiders have two business days to file after a trade, so this is close to real time, but it is a record of what has been disclosed, not a statement of what Ban Seng Teh currently holds. Amounts are open-market and plan transactions reported on Form 4; grants and option exercises are not counted as buys.

Source: Form 4 filings submitted to the SEC, the same public documents behind our insider trading tracker. Figures are open-market and plan transactions only; grants and option exercises are not counted as buys. A disclosure is not evidence of a market view, and none of this is investment advice. See the full STX stock page for price, filings and coverage.