About this data
What it is
When a company's officers, directors or owners of more than 10% buy or sell its stock, they must report the trade to the SEC on Form 4. This feed shows purchases and sales on the open market; stock grants, option exercises and shares withheld for tax are left out.
Who files it
The insider, usually through the company, within two business days of the trade.
How current
We collect new filings throughout the day on SEC business days.
Worth knowing
Sales are often routine: insiders sell to diversify, to pay taxes, or under a 10b5-1 plan set up months in advance. A purchase with their own money is less common, which is why many investors pay closer attention to it.

All of this comes from public filings.

Open-market trades per day, last 30 days

05001,000Oct 17 · Purchases: 0Oct 17 · Sales: 0Oct 17Oct 18 · Purchases: 0Oct 18 · Sales: 0Oct 19 · Purchases: 29Oct 19 · Sales: 159Oct 20 · Purchases: 45Oct 20 · Sales: 209Oct 21 · Purchases: 38Oct 21 · Sales: 183Oct 21Oct 22 · Purchases: 50Oct 22 · Sales: 130Oct 23 · Purchases: 77Oct 23 · Sales: 126Oct 24 · Purchases: 1Oct 24 · Sales: 0Oct 25 · Purchases: 0Oct 25 · Sales: 0Oct 25Oct 26 · Purchases: 60Oct 26 · Sales: 171Oct 27 · Purchases: 27Oct 27 · Sales: 217Oct 28 · Purchases: 44Oct 28 · Sales: 135Oct 29 · Purchases: 35Oct 29 · Sales: 199Oct 29Oct 30 · Purchases: 68Oct 30 · Sales: 270Oct 31 · Purchases: 3Oct 31 · Sales: 0Nov 1 · Purchases: 2Nov 1 · Sales: 0Nov 2 · Purchases: 79Nov 2 · Sales: 826Nov 2Nov 3 · Purchases: 66Nov 3 · Sales: 337Nov 4 · Purchases: 67Nov 4 · Sales: 535Nov 5 · Purchases: 108Nov 5 · Sales: 458Nov 6 · Purchases: 137Nov 6 · Sales: 390Nov 6Nov 7 · Purchases: 0Nov 7 · Sales: 0Nov 8 · Purchases: 0Nov 8 · Sales: 0Nov 9 · Purchases: 110Nov 9 · Sales: 457Nov 10 · Purchases: 97Nov 10 · Sales: 406Nov 10Nov 11 · Purchases: 98Nov 11 · Sales: 330Nov 12 · Purchases: 54Nov 12 · Sales: 167Nov 13 · Purchases: 23Nov 13 · Sales: 28Nov 14 · Purchases: 0Nov 14 · Sales: 0Nov 14Nov 15 · Purchases: 0Nov 15 · Sales: 0
05001,000Oct 17 · Purchases: 0Oct 17 · Sales: 0Oct 17Oct 18 · Purchases: 0Oct 18 · Sales: 0Oct 19 · Purchases: 29Oct 19 · Sales: 159Oct 20 · Purchases: 45Oct 20 · Sales: 209Oct 21 · Purchases: 38Oct 21 · Sales: 183Oct 21Oct 22 · Purchases: 50Oct 22 · Sales: 130Oct 23 · Purchases: 77Oct 23 · Sales: 126Oct 24 · Purchases: 1Oct 24 · Sales: 0Oct 25 · Purchases: 0Oct 25 · Sales: 0Oct 25Oct 26 · Purchases: 60Oct 26 · Sales: 171Oct 27 · Purchases: 27Oct 27 · Sales: 217Oct 28 · Purchases: 44Oct 28 · Sales: 135Oct 29 · Purchases: 35Oct 29 · Sales: 199Oct 29Oct 30 · Purchases: 68Oct 30 · Sales: 270Oct 31 · Purchases: 3Oct 31 · Sales: 0Nov 1 · Purchases: 2Nov 1 · Sales: 0Nov 2 · Purchases: 79Nov 2 · Sales: 826Nov 2Nov 3 · Purchases: 66Nov 3 · Sales: 337Nov 4 · Purchases: 67Nov 4 · Sales: 535Nov 5 · Purchases: 108Nov 5 · Sales: 458Nov 6 · Purchases: 137Nov 6 · Sales: 390Nov 6Nov 7 · Purchases: 0Nov 7 · Sales: 0Nov 8 · Purchases: 0Nov 8 · Sales: 0Nov 9 · Purchases: 110Nov 9 · Sales: 457Nov 10 · Purchases: 97Nov 10 · Sales: 406Nov 10Nov 11 · Purchases: 98Nov 11 · Sales: 330Nov 12 · Purchases: 54Nov 12 · Sales: 167Nov 13 · Purchases: 23Nov 13 · Sales: 28Nov 14 · Purchases: 0Nov 14 · Sales: 0Nov 14Nov 15 · Purchases: 0Nov 15 · Sales: 0

Purchases Sales

By trade date. Insiders have two business days to file, so the most recent days fill in later.

Latest open-market insider trades

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Showing: ticker DIOD

Latest open-market insider trades
TradedInsiderCompanyTypeSharesPriceValueFiling
May 29, 2026Richard Dallas White
Corporate Secretary
DIOD
Diodes Incorporated
Sale2,000$107.01$214.0K SaleForm 4 ↗
May 29, 2026Richard Dallas White
Corporate Secretary
DIOD
Diodes Incorporated
Sale1,000$104.48$104.5K SaleForm 4 ↗
May 29, 2026Francis Tang
Chief Technology Officer
DIOD
Diodes Incorporated
Sale15,330$112.04$1.7M SaleForm 4 ↗
May 27, 2026Gary Yu
President and CEO, Director
DIOD
Diodes Incorporated
Sale3,632$110.08$399.8K SaleForm 4 ↗
May 27, 2026Emily Yang
SVP Worldwide Sales/Marketing
DIOD
Diodes Incorporated
Sale3,000$110.08$330.2K SaleForm 4 ↗
May 27, 2026Francis Tang
Chief Technology Officer
DIOD
Diodes Incorporated
Sale5,000$110.08$550.4K SaleForm 4 ↗
May 26, 2026Andy Tsong
SVP Worldwide Products Group
DIOD
Diodes Incorporated
Sale1,582$106.96$169.2K SaleForm 4 ↗
May 26, 2026Jin Zhao
President, Diodes Asia
DIOD
Diodes Incorporated
Sale3,689$106.86$394.2K SaleForm 4 ↗
May 26, 2026Emily Yang
SVP Worldwide Sales/Marketing
DIOD
Diodes Incorporated
Sale2,000$107.52$215.0K SaleForm 4 ↗
May 26, 2026Francis Tang
Chief Technology Officer
DIOD
Diodes Incorporated
Sale4,137$108.00$446.8K SaleForm 4 ↗
May 20, 2026Emily Yang
SVP Worldwide Sales/Marketing
DIOD
Diodes Incorporated
Sale2,000$96.81$193.6K SaleForm 4 ↗
May 15, 2026Emily Yang
SVP Worldwide Sales/Marketing
DIOD
Diodes Incorporated
Sale2,000$101.47$202.9K SaleForm 4 ↗
May 13, 2026Brett R. Whitmire
CFO
DIOD
Diodes Incorporated
Sale16,556$103.34$1.7M SaleForm 4 ↗
May 12, 2026Andy Tsong
SVP Worldwide Products Group
DIOD
Diodes Incorporated
Sale2,652$110.00$291.7K SaleForm 4 ↗
May 12, 2026Jin Zhao
President, Diodes Asia
DIOD
Diodes Incorporated
Sale2,760$102.36$282.5K SaleForm 4 ↗
May 12, 2026Francis Tang
Chief Technology Officer
DIOD
Diodes Incorporated
Sale3,643$108.00$393.4K SaleForm 4 ↗
Feb 24, 2026Emily Yang
SVP Worldwide Sales/Marketing
DIOD
Diodes Incorporated
Sale2,154$69.89$150.5K SaleForm 4 ↗
Feb 24, 2026Gary Yu
President and CEO, Director
DIOD
Diodes Incorporated
Sale2,000$70.00$140.0K SaleForm 4 ↗
Feb 20, 2026Keh Shew Lu
Director
DIOD
Diodes Incorporated
Sale64,266$67.74$4.4M SaleForm 4 ↗
Feb 20, 2026Keh Shew Lu
Director
DIOD
Diodes Incorporated
Sale46,734$67.78$3.2M SaleForm 4 ↗
Feb 13, 2026Brett R. Whitmire
CFO
DIOD
Diodes Incorporated
Sale5,953$71.22$424.0K SaleForm 4 ↗
Feb 13, 2026Emily Yang
SVP Worldwide Sales/Marketing
DIOD
Diodes Incorporated
Sale1,000$71.89$71.9K SaleForm 4 ↗
Feb 13, 2026Andy Tsong
SVP Worldwide Products Group
DIOD
Diodes Incorporated
Sale3,277$70.46$230.9K SaleForm 4 ↗
Feb 3, 2026Gary Yu
President and CEO, Director
DIOD
Diodes Incorporated
Sale2,900$60.85$176.5K SaleForm 4 ↗
Feb 3, 2026Emily Yang
SVP Worldwide Sales/Marketing
DIOD
Diodes Incorporated
Sale950$60.85$57.8K SaleForm 4 ↗
Feb 3, 2026Brett R. Whitmire
CFO
DIOD
Diodes Incorporated
Sale830$60.85$50.5K SaleForm 4 ↗
Feb 2, 2026Jin Zhao
President, Diodes Asia
DIOD
Diodes Incorporated
Sale525$59.19$31.1K SaleForm 4 ↗
Nov 12, 2025Keh Shew Lu
Director
DIOD
Diodes Incorporated
Sale2,095$47.46$99.4K SaleForm 4 ↗
Nov 12, 2025Keh Shew Lu
Director
DIOD
Diodes Incorporated
Sale3,905$47.40$185.1K SaleForm 4 ↗
Aug 28, 2025Emily Yang
SVP Worldwide Sales/Marketing
DIOD
Diodes Incorporated
Sale1,000$56.36$56.4K SaleForm 4 ↗
Aug 27, 2025Brett R. Whitmire
CFO
DIOD
Diodes Incorporated
Sale2,000$55.90$111.8K SaleForm 4 ↗
Aug 19, 2025Emily Yang
SVP Worldwide Sales/Marketing
DIOD
Diodes Incorporated
Sale1,000$53.22$53.2K SaleForm 4 ↗
Feb 4, 2025Emily Yang
SVP Worldwide Sales/Marketing
DIOD
Diodes Incorporated
Sale950$56.04$53.2K SaleForm 4 ↗
Feb 4, 2025Gary Yu
President, Director
DIOD
Diodes Incorporated
Sale2,900$56.04$162.5K SaleForm 4 ↗
Feb 4, 2025Brett R. Whitmire
CFO
DIOD
Diodes Incorporated
Sale830$56.04$46.5K SaleForm 4 ↗

35 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 5:08 PM EST.

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