Home › Stocks › ASX › SEC Filing News

ASX SEC Filing News — ASE Technology Holding Co., Ltd.

Latest SEC filings for ASE Technology Holding Co., Ltd. (ASX) explained in plain English: insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). Sourced directly from SEC EDGAR.

What you’re looking at: Each item below is parsed from an actual SEC filing. Form 4 = confirmed insider transaction · Form 144 = proposed sale notice · 8-K = material event (earnings, M&A, leadership change, etc.) · 10-Q / 10-K = quarterly / annual report.
Form 4 Insider Selling 2026-05-27

ASX insider Chen Jeffrey (Director) sold 29,000 shares (~$17.13M)

Chen Jeffrey, listed as Director at ASE Technology Holding Co., Ltd., reported an open-market sale of 29,000 ASX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chen Jeffrey (Director) Shares: 29,000 Est. Value: $17.13M
View on SEC EDGAR → Open Filing Document →
Form 4 Insider Selling 2026-05-21

ASX insider Chen Jeffrey (Director) sold 27,000 shares (~$13.19M)

Chen Jeffrey, listed as Director at ASE Technology Holding Co., Ltd., reported an open-market sale of 27,000 ASX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chen Jeffrey (Director) Shares: 27,000 Est. Value: $13.19M
View on SEC EDGAR → Open Filing Document →
Form 4 Insider Selling 2026-05-18

ASX insider Chen Jeffrey (Director) sold 27,000 shares (~$14.66M)

Chen Jeffrey, listed as Director at ASE Technology Holding Co., Ltd., reported an open-market sale of 27,000 ASX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chen Jeffrey (Director) Shares: 27,000 Est. Value: $14.66M
View on SEC EDGAR → Open Filing Document →
Form 4 Insider Selling 2026-04-28

ASX insider Chen Jeffrey (Director) sold 9,000 shares (~$4.26M)

Chen Jeffrey, listed as Director at ASE Technology Holding Co., Ltd., reported an open-market sale of 9,000 ASX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chen Jeffrey (Director) Shares: 9,000 Est. Value: $4.26M
View on SEC EDGAR → Open Filing Document →
Form 4 Insider Selling 2026-04-23

ASX insider Chen Jeffrey (Director) sold 27,000 shares (~$12.76M)

Chen Jeffrey, listed as Director at ASE Technology Holding Co., Ltd., reported an open-market sale of 27,000 ASX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chen Jeffrey (Director) Shares: 27,000 Est. Value: $12.76M
View on SEC EDGAR → Open Filing Document →
Form 4 Insider Selling 2026-04-22

ASX insider Chen Tien-Szu (GM, ASE Inc. Chung-Li Branch) sold 530,000 shares (~$247.14M)

Chen Tien-Szu, listed as GM, ASE Inc. Chung-Li Branch at ASE Technology Holding Co., Ltd., reported an open-market sale of 530,000 ASX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chen Tien-Szu (GM, ASE Inc. Chung-Li Branch) Shares: 530,000 Est. Value: $247.14M
View on SEC EDGAR → Open Filing Document →
Form 4 Insider Selling 2026-04-20

ASX insider Chen Jeffrey (Director) sold 27,000 shares (~$12.25M)

Chen Jeffrey, listed as Director at ASE Technology Holding Co., Ltd., reported an open-market sale of 27,000 ASX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chen Jeffrey (Director) Shares: 27,000 Est. Value: $12.25M
View on SEC EDGAR → Open Filing Document →
Form 4 Insider Selling 2026-04-15

ASX insider Chen Jeffrey (Director) sold 27,000 shares (~$11.41M)

Chen Jeffrey, listed as Director at ASE Technology Holding Co., Ltd., reported an open-market sale of 27,000 ASX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chen Jeffrey (Director) Shares: 27,000 Est. Value: $11.41M
View on SEC EDGAR → Open Filing Document →
Form 4 Tax / Compensation Filing 2026-04-13

ASX insider Form 4 filed for equity award, exercise, or tax withholding

Chang Chien Shen (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Chang Chien Shen (Director) Shares: 4,500,000
View on SEC EDGAR → Open Filing Document →
Form 4 Insider Selling 2026-04-10

ASX insider Chen Jeffrey (Director) sold 27,000 shares (~$10.40M)

Chen Jeffrey, listed as Director at ASE Technology Holding Co., Ltd., reported an open-market sale of 27,000 ASX shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chen Jeffrey (Director) Shares: 27,000 Est. Value: $10.40M
View on SEC EDGAR → Open Filing Document →
Want a deeper view?   Back to ASX stock analysis  ·  Browse all stocks