DIOD · Insider Trading
Diodes Inc
Every open-market purchase and sale reported by DIOD officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-13 | Evan Yu | Director | A | +2,250 | — |
| 2026-06-01 | Richard Dallas White | Corporate Secretary | Sell | −3,000 | −$318.50K |
| 2026-06-01 | Francis Tang | Chief Technology Officer | Sell | −15,330 | −$1.72M |
| 2026-05-28 | Keh Shew Lu | — | F | −1,970 | −$213.23K |
| 2026-05-27 | Jin Zhao | President, Diodes Asia | Sell | −3,689 | −$394.21K |
| 2026-05-27 | Gary Yu | President and CEO | MIXED | −4,224 | −$463.89K |
| 2026-05-27 | Emily Yang | SVP Worldwide Sales/Marketing | Sell | −5,000 | −$545.28K |
| 2026-05-27 | Francis Tang | Chief Technology Officer | Sell | −9,137 | −$997.20K |
| 2026-05-27 | Andy Tsong | SVP Worldwide Products Group | Sell | −1,582 | −$169.20K |
| 2026-05-21 | Emily Yang | SVP Worldwide Sales/Marketing | Sell | −2,000 | −$193.62K |
| 2026-05-21 | Gary Yu | President and CEO | G | −300 | — |
| 2026-05-19 | Emily Yang | SVP Worldwide Sales/Marketing | Sell | −2,000 | −$202.93K |
| 2026-05-13 | Huey-Jen Jenny Su | Director | A | +3,000 | — |
| 2026-05-13 | Jin Zhao | President, Diodes Asia | Sell | −2,760 | −$282.52K |
| 2026-05-13 | Elizabeth Bull | Director | A | +3,000 | — |
| 2026-05-13 | Button Angie Chen | Director | A | +6,000 | — |
| 2026-05-13 | Brett R Whitmire | CFO | Sell | −16,556 | −$1.71M |
| 2026-05-13 | Warren Chen | Director | A | +3,000 | — |
| 2026-05-13 | Philip J Ritter | Director | A | +3,000 | — |
| 2026-05-13 | Gary Yu | President and CEO | A | +3,000 | — |
| 2026-05-13 | Andy Tsong | SVP Worldwide Products Group | Sell | −2,652 | −$291.72K |
| 2026-05-13 | Francis Tang | Chief Technology Officer | Sell | −3,643 | −$393.44K |
| 2026-02-26 | Gary Yu | President and CEO | Sell | −2,000 | −$140.00K |
| 2026-02-26 | Emily Yang | SVP Worldwide Sales/Marketing | Sell | −2,154 | −$150.55K |
| 2026-02-24 | Keh Shew Lu | Director | Sell | −111,000 | −$7.52M |
| 2026-02-17 | Brett R Whitmire | CFO | Sell | −5,953 | −$423.98K |
| 2026-02-17 | Andy Tsong | SVP Worldwide Products Group | Sell | −3,277 | −$230.89K |
| 2026-02-17 | Emily Yang | SVP Worldwide Sales/Marketing | Sell | −1,000 | −$71.89K |
| 2026-02-04 | Brett R Whitmire | CFO | MIXED | +40,364 | −$220.72K |
| 2026-02-04 | Gary Yu | President and CEO | MIXED | +59,760 | −$257.75K |
| 2026-02-04 | Andy Tsong | SVP Worldwide Analog Products | MIXED | +34,459 | −$93.48K |
| 2026-02-04 | Francis Tang | Chief Technology Officer | MIXED | +23,932 | −$125.44K |
| 2026-02-04 | Emily Yang | SVP Worldwide Sales/Marketing | MIXED | +32,553 | −$209.28K |
| 2026-02-04 | Keh Shew Lu | Director | F | −12,350 | −$749.15K |
| 2026-02-04 | Jin Zhao | President, Diodes Asia | MIXED | +33,629 | −$143.05K |
| 2025-11-13 | Keh Shew Lu | Director | Sell | −6,000 | −$284.50K |
| 2025-08-28 | Brett R Whitmire | CFO | Sell | −2,000 | −$111.79K |
| 2025-08-28 | Emily Yang | SVP Worldwide Sales/Marketing | Sell | −1,000 | −$56.36K |
| 2025-08-21 | Emily Yang | SVP Worldwide Sales/Marketing | Sell | −1,000 | −$53.22K |
| 2025-07-02 | Andy Tsong | SVP Worldwide Analog Products | F | −320 | −$17.70K |
| 2025-05-28 | Keh Shew Lu | Director | F | −2,166 | −$100.96K |
| 2025-05-28 | Gary Yu | President and CEO | F | −183 | −$8.53K |
| 2025-05-22 | Emily Yang | SVP Worldwide Sales/Marketing | G | −788 | — |
| 2025-05-15 | Button Angie Chen | Director | A | +3,000 | — |
| 2025-05-15 | Elizabeth Bull | Director | A | +3,000 | — |
| 2025-05-15 | Gary Yu | President and CEO | A | +4,915 | — |
| 2025-05-15 | Huey-Jen Jenny Su | Director | A | +3,000 | — |
| 2025-05-15 | Robert E Feiger | Director | A | +3,000 | — |
| 2025-05-15 | Warren Chen | Director | A | +3,000 | — |
| 2025-05-15 | Keh Shew Lu | Director | A | +3,000 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Gary Yu | President and CEO | 111,779 | $9.29M |
| Keh Shew Lu | Director | 95,005 | $7.89M |
| Francis Tang | Chief Technology Officer | 74,303 | $6.17M |
| Emily Yang | SVP Worldwide Sales/Marketing | 66,454 | $5.52M |
| Andy Tsong | SVP Worldwide Products Group | 48,170 | $4.00M |
| Brett R Whitmire | CFO | 44,632 | $3.71M |
| Jin Zhao | President, Diodes Asia | 43,531 | $3.62M |
| Richard Dallas White | Corporate Secretary | 42,375 | $3.52M |
| Button Angie Chen | Director | 20,040 | $1.67M |
| Evan Yu | Director | 14,250 | $1.18M |
| Warren Chen | Director | 13,140 | $1.09M |
| Elizabeth Bull | Director | 12,000 | $997.08K |
| Robert E Feiger | Director | 6,200 | $515.16K |
| Huey-Jen Jenny Su | Director | 6,000 | $498.54K |
| Philip J Ritter | Director | 3,000 | $249.27K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the DIOD quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.