DIOD insider buying and SEC filings, explained
Diodes Inc. · CIK 29002
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$16.8M
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| May 29, 2026 | Sale | Richard Dallas White (Corporate Secretary) sold 3,000 shares at about $106.17 ($319K). Holdings down 27% to 8,071 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 1, 2026 |
| May 29, 2026 | Sale | Francis Tang (Chief Technology Officer) sold 15,330 shares at about $112.04 ($1.7M). Holdings down 18% to 71,438 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 1, 2026 |
| May 26, 2026 | Sale | Andy Tsong (SVP Worldwide Products Group) sold 1,582 shares at $106.96 ($169K). Holdings down 3% to 48,170 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 27, 2026 |
| May 27, 2026 | Sale | Gary Yu (CEO and Director) sold 3,632 shares at $110.08 ($400K). Holdings down 3% to 108,147 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 27, 2026 |
| May 26, 2026 | Sale | Jin Zhao (President / COO) sold 3,689 shares at about $106.86 ($394K). Holdings down 8% to 43,531 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 27, 2026 |
| May 26–27, 2026 | Sale | Emily Yang (SVP Worldwide Sales/Marketing) sold 5,000 shares between May 26 and May 27 at about $109.06 ($545K). Holdings down 7% to 61,878 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 27, 2026 |
| May 26–27, 2026 | Sale | Francis Tang (Chief Technology Officer) sold 9,137 shares between May 26 and May 27 at about $109.14 ($997K). Holdings down 10% to 86,768 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 27, 2026 |
| May 20, 2026 | Sale | Emily Yang (SVP Worldwide Sales/Marketing) sold 2,000 shares at $96.81 ($194K). Holdings down 3% to 66,878 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 21, 2026 |
| May 15, 2026 | Sale | Emily Yang (SVP Worldwide Sales/Marketing) sold 2,000 shares at $101.47 ($203K). Holdings down 3% to 68,878 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 19, 2026 |
| May 13, 2026 | Sale | Brett R Whitmire (CFO) sold 16,556 shares at about $103.34 ($1.7M). Holdings down 27% to 44,632 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 13, 2026 |
| May 12, 2026 | Sale | Andy Tsong (SVP Worldwide Products Group) sold 2,652 shares at $110.00 ($292K). Holdings down 5% to 49,752 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 13, 2026 |
| May 12, 2026 | Sale | Jin Zhao (President / COO) sold 2,760 shares at about $102.36 ($283K). Holdings down 6% to 47,220 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 13, 2026 |
| May 12, 2026 | Sale | Francis Tang (Chief Technology Officer) sold 3,643 shares at $108.00 ($393K). Holdings down 4% to 95,905 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 13, 2026 |
| Feb 24, 2026 | Sale | Emily Yang (SVP Worldwide Sales/Marketing) sold 2,154 shares at $69.89 ($151K). Holdings down 3% to 70,878 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 26, 2026 |
| Feb 24, 2026 | Sale | Gary Yu (CEO and Director) sold 2,000 shares at $70.00 ($140K). Holdings down 2% to 109,671 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 26, 2026 |
| Feb 20, 2026 | Sale | Keh Shew Lu (Director) sold 111,000 shares indirectly (by entity) at about $67.76 ($7.5M). Holdings by entity down 26% to 180,131 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 24, 2026 |
| Feb 13, 2026 | Sale | Brett R Whitmire (CFO) sold 5,953 shares at about $71.22 ($424K). Holdings down 9% to 61,188 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 17, 2026 |
| Feb 13, 2026 | Sale | Emily Yang (SVP Worldwide Sales/Marketing) sold 1,000 shares at about $71.89 ($72K). Holdings down 1% to 73,032 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 17, 2026 |
| Feb 13, 2026 | Sale | Andy Tsong (SVP Worldwide Products Group) sold 3,277 shares at about $70.46 ($231K). Holdings down 6% to 52,404 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 17, 2026 |
| Feb 2, 2026 | Sale | Jin Zhao (President / COO) sold 525 shares at $59.19 ($31K). Holdings down 1% to 49,980 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 4, 2026 |
| Feb 3, 2026 | Sale | Gary Yu (CEO and Director) sold 2,900 shares at $60.85 ($176K). Holdings down 3% to 111,671 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 4, 2026 |
| Feb 3, 2026 | Sale | Emily Yang (SVP Worldwide Sales/Marketing) sold 950 shares at $60.85 ($58K). Holdings down 1% to 74,032 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 4, 2026 |
| Feb 3, 2026 | Sale | Brett R Whitmire (CFO) sold 830 shares at $60.85 ($51K). Holdings down 1% to 67,141 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 4, 2026 |
| Nov 12, 2025 | Sale | Keh Shew Lu (Director) sold 6,000 shares indirectly (by trust) at about $47.42 ($285K). Holdings by trust down 1% to 271,886 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 13, 2025 |
17 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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