As of the latest Form 4 filed Jun 1, 2026.
What Diodes Incorporated insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 57 most recent filings for DIOD.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-06-01 | 2026-05-29 | White Richard Dallas Corporate Secretary | SSale | −2.00K | $107.01 | $214K | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-29 | White Richard Dallas, Corporate Secretary | SSale | −1.00K | $104.48 | $104K | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-29 | Tang Francis Chief Technology Officer | SSale | −15.3K | $112.04 | $1.72M | No | Form 4 ↗ |
| 2026-05-28 | 2026-05-26 | LU KEH SHEW Insider | FTax | −1.97K | $108.24 | $213K | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-27 | Yu Gary President and CEO | SSale | −3.63K | $110.08 | $400K | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-27 | Yang Emily SVP Worldwide Sales/Marketing | SSale | −3.00K | $110.08 | $330K | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-27 | Tang Francis Chief Technology Officer | SSale | −5.00K | $110.08 | $550K | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-26 | Tsong Andy SVP Worldwide Products Group | SSale | −1.58K | $106.96 | $169K | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-26 | Yu Gary President and CEO | FTax | −592.00 | $108.24 | $64.1K | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-26 | Zhao Jin President, Diodes Asia | SSale | −3.69K | $106.86 | $394K | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-26 | Yang Emily SVP Worldwide Sales/Marketing | SSale | −2.00K | $107.52 | $215K | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-26 | Tang Francis Chief Technology Officer | SSale | −4.14K | $108.00 | $447K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-20 | Yang Emily SVP Worldwide Sales/Marketing | SSale | −2.00K | $96.81 | $194K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-19 | Yu Gary President and CEO | GGift | −300.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-15 | Yang Emily SVP Worldwide Sales/Marketing | SSale | −2.00K | $101.47 | $203K | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-13 | Whitmire Brett R CFO | SSale | −16.6K | $103.34 | $1.71M | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Tsong Andy SVP Worldwide Products Group | SSale | −2.65K | $110.00 | $292K | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Zhao Jin President, Diodes Asia | SSale | −2.76K | $102.36 | $283K | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Tang Francis Chief Technology Officer | SSale | −3.64K | $108.00 | $393K | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Su Huey-Jen Jenny Director | AAward | +3.00K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Bull Elizabeth Director | AAward | +3.00K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Yu Gary President and CEO | AAward | +3.00K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Chen Button Angie Director | AAward | +6.00K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Chen Warren Director | AAward | +3.00K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | RITTER PHILIP J Director | AAward | +3.00K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Yang Emily SVP Worldwide Sales/Marketing | SSale | −2.15K | $69.89 | $151K | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Yu Gary President and CEO | SSale | −2.00K | $70.00 | $140K | No | Form 4 ↗ |
| 2026-02-24 | 2026-02-20 | LU KEH SHEW Director | SSale | −64.3K | $67.74 | $4.35M | No | Form 4 ↗ |
| 2026-02-24 | 2026-02-20 | LU KEH SHEW, Director | SSale | −46.7K | $67.78 | $3.17M | No | Form 4 ↗ |
| 2026-02-17 | 2026-02-13 | Whitmire Brett R CFO | SSale | −5.95K | $71.22 | $424K | No | Form 4 ↗ |
| 2026-02-17 | 2026-02-13 | Yang Emily SVP Worldwide Sales/Marketing | SSale | −1.00K | $71.89 | $71.9K | No | Form 4 ↗ |
| 2026-02-17 | 2026-02-13 | Tsong Andy SVP Worldwide Products Group | SSale | −3.28K | $70.46 | $231K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-03 | Yu Gary President and CEO | SSale | −2.90K | $60.85 | $176K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-03 | Yang Emily SVP Worldwide Sales/Marketing | SSale | −950.00 | $60.85 | $57.8K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-03 | Whitmire Brett R CFO | SSale | −830.00 | $60.85 | $50.5K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-02 | Zhao Jin President, Diodes Asia | SSale | −525.00 | $59.19 | $31.1K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-02 | Zhao Jin, President, Diodes Asia | FTax | −1.85K | $60.66 | $112K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-02 | Yu Gary President and CEO | FTax | −1.34K | $60.66 | $81.3K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-02 | Yang Emily SVP Worldwide Sales/Marketing | FTax | −2.50K | $60.66 | $151K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-02 | Whitmire Brett R CFO | FTax | −2.81K | $60.66 | $170K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-02 | Tang Francis Chief Technology Officer | FTax | −2.07K | $60.66 | $125K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-02 | LU KEH SHEW Director | FTax | −12.3K | $60.66 | $749K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-02 | Tsong Andy SVP Worldwide Analog Products | FTax | −1.54K | $60.66 | $93.5K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Zhao Jin President, Diodes Asia | AAward | +18.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Zhao Jin, President, Diodes Asia | AAward | +18.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Yu Gary President and CEO | AAward | +32.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Yu Gary, President and CEO | AAward | +32.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Yang Emily SVP Worldwide Sales/Marketing | AAward | +18.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Yang Emily, SVP Worldwide Sales/Marketing | AAward | +18.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Whitmire Brett R CFO | AAward | +22.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Whitmire Brett R, CFO | AAward | +22.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Tang Francis Chief Technology Officer | AAward | +13.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Tang Francis, Chief Technology Officer | AAward | +13.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Tsong Andy SVP Worldwide Analog Products | AAward | +18.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-01 | Tsong Andy, SVP Worldwide Analog Products | AAward | +18.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2025-11-13 | 2025-11-12 | LU KEH SHEW Director | SSale | −2.10K | $47.46 | $99.4K | No | Form 4 ↗ |
| 2025-11-13 | 2025-11-12 | LU KEH SHEW, Director | SSale | −3.90K | $47.40 | $185K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also DIOD’s full analysis or the market-wide insider trading feed. The tabs above jump to DIOD’s other SEC data.
Source: SEC Form 4 filings for DIOD, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
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