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Diodes Inc /Del/ (NASDAQ:DIOD)
US · Delayed Price · Currency is USD
Technology · Semiconductors
83.18+2.11 (+2.60%)
Insider Score
––Not scored
DIOD Insider Score
Insiders here have filed 1 Form 4 in the last 90 days, but all of them are share awards, grants or other non-market transactions. Those are compensation, not a decision to buy, so they are not scored.
DIOD Stock Insider Trading Activity
DIOD stock’s insider trading shows 16 sales on the open market for an estimated $7.62M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Yu Evan Director | Award | 2,250 | — | — | 18.8% | 14,250 | Aug 12, 2026 | — | Form 4 |
| White Richard Dallas Other | Sell | 2,000 | $107.01 | $214.02K | 19.9% | 8,071 | May 29, 2026 | — | Form 4 |
| Tang Francis Other | Sell | 15,330 | $112.04 | $1.72M | 17.7% | 71,438 | May 29, 2026 | — | Form 4 |
| White Richard Dallas Other | Sell | 1,000 | $104.48 | $104.48K | 9.0% | 10,071 | May 29, 2026 | — | Form 4 |
| Yu Gary CEO | Sell | 3,632 | $110.08 | $399.81K | 3.2% | 108,147 | May 27, 2026 | — | Form 4 |
| Tang Francis Other | Sell | 5,000 | $110.08 | $550.40K | 5.4% | 86,768 | May 27, 2026 | — | Form 4 |
| Yang Emily Other | Sell | 3,000 | $110.08 | $330.24K | 4.6% | 61,878 | May 27, 2026 | — | Form 4 |
| Yu Gary CEO | Tax withheld | 592 | $108.24 | $64.08K | 0.5% | 111,779 | May 26, 2026 | — | Form 4 |
| LU KEH SHEW Other | Tax withheld | 1,970 | $108.24 | $213.23K | 2.1% | 90,305 | May 26, 2026 | — | Form 4 |
| Zhao Jin Other | Sell | 3,689 | $106.86 | $394.21K | 7.8% | 43,531 | May 26, 2026 | — | Form 4 |
| Tsong Andy Other | Sell | 1,582 | $106.96 | $169.21K | 3.2% | 48,170 | May 26, 2026 | — | Form 4 |
| Yang Emily Other | Sell | 2,000 | $107.52 | $215.04K | 3.0% | 64,878 | May 26, 2026 | — | Form 4 |
| Tang Francis Other | Sell | 4,137 | $108.00 | $446.80K | 4.3% | 91,768 | May 26, 2026 | — | Form 4 |
| Yang Emily Other | Sell | 2,000 | $96.81 | $193.62K | 2.9% | 66,878 | May 20, 2026 | — | Form 4 |
| Yu Gary CEO | Gift | 300 | — | — | 0.3% | 112,371 | May 19, 2026 | — | Form 4 |
| Yang Emily Other | Sell | 2,000 | $101.47 | $202.94K | 2.8% | 68,878 | May 15, 2026 | — | Form 4 |
| Whitmire Brett R CFO | Sell | 16,556 | $103.34 | $1.71M | 27.1% | 44,632 | May 13, 2026 | — | Form 4 |
| Zhao Jin Other | Sell | 2,760 | $102.36 | $282.51K | 5.5% | 47,220 | May 12, 2026 | — | Form 4 |
| Tsong Andy Other | Sell | 2,652 | $110.00 | $291.72K | 5.1% | 49,752 | May 12, 2026 | — | Form 4 |
| Tang Francis Other | Sell | 3,643 | $108.00 | $393.44K | 3.7% | 95,905 | May 12, 2026 | — | Form 4 |
| Bull Elizabeth Director | Award | 3,000 | — | — | 33.3% | 12,000 | May 11, 2026 | — | Form 4 |
| Chen Button Angie Director | Award | 6,000 | — | — | 42.7% | 20,040 | May 11, 2026 | — | Form 4 |
| Chen Warren Director | Award | 3,000 | — | — | 29.6% | 13,140 | May 11, 2026 | — | Form 4 |
| Su Huey-Jen Jenny Director | Award | 3,000 | — | — | 100% | 6,000 | May 11, 2026 | — | Form 4 |
| Yu Gary CEO | Award | 3,000 | — | — | 2.7% | 112,671 | May 11, 2026 | — | Form 4 |
| RITTER PHILIP J Director | Award | 3,000 | — | — | New | 3,000 | May 11, 2026 | — | Form 4 |
| Yu Gary CEO | Sell | 2,000 | $70.00 | $140.00K | 1.8% | 109,671 | Feb 24, 2026 | — | Form 4 |
| Yang Emily Other | Sell | 2,154 | $69.89 | $150.54K | 2.9% | 70,878 | Feb 24, 2026 | — | Form 4 |
| LU KEH SHEW Director | Sell | 46,734 | $67.78 | $3.17M | 17.2% | 225,152 | Feb 20, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
- Gift (G) — Bona fide gift
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.