DIODES INC /DEL/ (DIOD) stock: insider trades, news & valuation
Heavy sellingShare price and insider trades
DIODES INC /DEL/ insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 8 sold $16.8M of DIOD stock on the open market.
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DIOD insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | — | 0 |
| Q2 2026 | — | 0 | $7.6M | 16 |
| Q1 2026 | — | 0 | $8.9M | 11 |
| Q4 2025 | — | 0 | $285K | 2 |
Valuation, profit and volume
Summary
Over the past 12 months, 0 DIODES INC /DEL/ insiders reported open-market purchases totaling $0, while 8 insiders reported sales totaling $16.8M. 0 of 29 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Jun 1SEC | Francis TangCTO | Sell | 15,33071,438 held (−18%) | $112.04 | $1.7M | -15.3% | — |
| Jun 1SEC | Richard Dallas WhiteCorporate Secretary | Sell | 2,0008,071 held (−20%) | $107.01 | $214K | -11.3% | — |
| Jun 1SEC | Richard Dallas WhiteCorporate Secretary | Sell | 1,00010,071 held (−9%) | $104.48 | $104K | -9.1% | — |
| May 27SEC | Francis TangCTO | Sell | 5,00086,768 held (−5%) | $110.08 | $550K | -13.8% | — |
| May 27SEC | Francis TangCTO | Sell | 4,13791,768 held (−4%) | $108.00 | $447K | -12.1% | — |
| May 27SEC | Gary YuCEO, President | Sell | 3,632108,147 held (−3%) | $110.08 | $400K | -13.8% | — |
| May 27SEC | Jin ZhaoPresident | Sell | 3,68943,531 held (−8%) | $106.86 | $394K | -11.2% | — |
| May 27SEC | Emily YangSvp Worldwide Sales/Marketing | Sell | 3,00061,878 held (−5%) | $110.08 | $330K | -13.8% | — |
| May 27SEC | Emily YangSvp Worldwide Sales/Marketing | Sell | 2,00064,878 held (−3%) | $107.52 | $215K | -11.7% | — |
| May 27SEC | Andy TsongSvp Worldwide Products Group | Sell | 1,58248,170 held (−3%) | $106.96 | $169K | -11.2% | — |
| May 21SEC | Emily YangSvp Worldwide Sales/Marketing | Sell | 2,00066,878 held (−3%) | $96.81 | $194K | -1.9% | — |
| May 19SEC | Emily YangSvp Worldwide Sales/Marketing | Sell | 2,00068,878 held (−3%) | $101.47 | $203K | -6.4% | — |
| May 13SEC | Brett R WhitmireCFO | Sell | 16,55644,632 held (−27%) | $103.34 | $1.7M | -8.1% | — |
| May 13SEC | Francis TangCTO | Sell | 3,64395,905 held (−4%) | $108.00 | $393K | -12.1% | — |
| May 13SEC | Andy TsongSvp Worldwide Products Group | Sell | 2,65249,752 held (−5%) | $110.00 | $292K | -13.7% | — |
| May 13SEC | Jin ZhaoPresident | Sell | 2,76047,220 held (−6%) | $102.36 | $283K | -7.2% | — |
| Feb 26SEC | Emily YangSvp Worldwide Sales/Marketing | Sell | 2,15470,878 held (−3%) | $69.89 | $151K | +35.8% | — |
| Feb 26SEC | Gary YuCEO, President | Sell | 2,000109,671 held (−2%) | $70.00 | $140K | +35.6% | — |
| Feb 24SEC | Keh Shew LuDirector | Sell | 64,266180,131 held (−26%) | $67.74 | $4.4M | +40.2% | — |
| Feb 24SEC | Keh Shew LuDirector | Sell | 46,734225,152 held (−17%) | $67.78 | $3.2M | +40.1% | — |
| Feb 17SEC | Brett R WhitmireCFO | Sell | 5,95361,188 held (−9%) | $71.22 | $424K | +33.3% | — |
| Feb 17SEC | Andy TsongSvp Worldwide Products Group | Sell | 3,27752,404 held (−6%) | $70.46 | $231K | +34.7% | — |
| Feb 17SEC | Emily YangSvp Worldwide Sales/Marketing | Sell | 1,00073,032 held (−1%) | $71.89 | $72K | +32.1% | — |
| Feb 4SEC | Gary YuCEO, President | Sell | 2,900111,671 held (−3%) | $60.85 | $176K | +56.0% | — |
| Feb 4SEC | Emily YangSvp Worldwide Sales/Marketing | Sell | 95074,032 held (−1%) | $60.85 | $58K | +56.0% | — |
| Feb 4SEC | Brett R WhitmireCFO | Sell | 83067,141 held (−1%) | $60.85 | $51K | +56.0% | — |
| Feb 4SEC | Jin ZhaoPresident | Sell | 52549,980 held (−1%) | $59.19 | $31K | +60.4% | — |
| Nov 13SEC | Keh Shew LuDirector | Sell | 3,905271,886 held (−1%) | $47.40 | $185K | +100.3% | — |
| Nov 13SEC | Keh Shew LuDirector | Sell | 2,095244,397 held (−1%) | $47.46 | $99K | +100.0% | — |
Insiders at DIODES INC /DEL/
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Keh Shew LuDirector | — | $7.8M | Feb 24, 2026 | — |
| Francis TangCTO | — | $3.1M | Jun 1, 2026 | — |
| Brett R WhitmireCFO | — | $2.2M | May 13, 2026 | — |
| Emily YangSvp Worldwide Sales/Marketing | — | $1.2M | May 27, 2026 | — |
| Gary YuCEO, President | — | $716K | May 27, 2026 | — |
| Jin ZhaoPresident | — | $708K | May 27, 2026 | — |
| Andy TsongSvp Worldwide Products Group | — | $692K | May 27, 2026 | — |
| Richard Dallas WhiteCorporate Secretary | — | $318K | Jun 1, 2026 | — |
DIOD stock: common questions
Are DIODES INC /DEL/ insiders buying DIOD stock?
In the past 12 months, 0 insiders reported open-market purchases of DIOD worth $0.
Are DIODES INC /DEL/ insiders selling DIOD stock?
8 insiders reported sales worth $16.8M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is DIOD's 52-week range?
Over the past year DIOD has traded between $42.36 and $122.76. It last closed at $94.94 on Oct 9, 2026.