Insider · CIK 0001768901
Brett R Whitmire
Files at DIOD (DIODES INC /DEL/). First filing Feb 5, 2025, latest May 13, 2026.
In brief
Brett R Whitmire files SEC Form 4 as CFO at DIOD (DIODES INC /DEL/). Since Feb 5, 2025, Brett R Whitmire has reported 0 open-market buys worth $0 and 5 open-market sells worth $2.3M, the latest filed on May 13, 2026.
A track record needs three past buys with six months of prices behind them; Brett R Whitmire has 0, so none is measured yet.
The newest scored trade: sold $1.7M of DIOD on May 13, 2026, filed May 13, 2026, scored 72 (notable). In the last 12 months: 0 buys worth $0 and 3 sells worth $2.2M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
DIOD: DIODES INC /DEL/
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 72Notable | DIODES INC /DEL/ | $1.7M 16,556 shares | -27% | +141% from low-12% from high | |
| 53Moderate | DIODES INC /DEL/ | $424k 5,953 shares | -9% | +107% from low-9% from high | |
| 44Moderate | DIODES INC /DEL/ | $51k 830 shares | -1% | +70% from low-4% from high | |
| 40Moderate | DIODES INC /DEL/ | $112k 2,000 shares | -4% | +64% from low-15% from high | |
| 43Moderate | DIODES INC /DEL/ | $47k 830 shares | -2% | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| May 13, 2026 | DIOD DIODES INCORPORATED | 16,556 0.04% of outstanding | $1.7M | May 13, 2026 | none |
| Feb 13, 2026 | DIOD DIODES INCORPORATED | 5,953 0.01% of outstanding | $424k | Feb 13, 2026 | $51k |
| Aug 27, 2025 | DIOD DIODES INCORPORATED | 2,000 0.00% of outstanding | $112k | Aug 27, 2025 | none |
Transactions
Every row this insider has filed, 12 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| May 13, 2026 | DIOD DIODES INC /DEL/ | SOpen-market sale Diodes Incorporated Common Stock | -16,556 | $103.34 | $1.7M | 44,632 | May 13, 2026 |
| Feb 13, 2026 | DIOD DIODES INC /DEL/ | SOpen-market sale Diodes Incorporated Common Stock | -5,953 | $71.22 | $424k | 61,188 | Feb 17, 2026 |
| Feb 1, 2026 | DIOD DIODES INC /DEL/ | AGrant or award Diodes Incorporated Common Stock | +22,000 | $0.00 | $0 | 70,777 | Feb 4, 2026 |
| Feb 2, 2026 | DIOD DIODES INC /DEL/ | FTax withholding Diodes Incorporated Common Stock | -2,806 | $60.66 | $170k | 67,971 | Feb 4, 2026 |
| Feb 3, 2026 | DIOD DIODES INC /DEL/ | SOpen-market sale Diodes Incorporated Common Stock | -830 | $60.85 | $51k | 67,141 | Feb 4, 2026 |
| Feb 1, 2026 | DIOD DIODES INC /DEL/ | AGrant or award Diodes Incorporated Common Stock - Performance Stock Units | +22,000 | $0.00 | $0 | 45,100 | Feb 4, 2026 |
| Aug 27, 2025 | DIOD DIODES INC /DEL/ | SOpen-market sale Diodes Incorporated Common Stock | -2,000 | $55.90 | $112k | 48,777 | Aug 28, 2025 |
| Feb 24, 2025 | DIOD DIODES INC /DEL/ | FTax withholding Diodes Incorporated Common Stock | -748 | $54.26 | $41k | 50,777 | Feb 26, 2025 |
| Feb 3, 2025 | DIOD DIODES INC /DEL/ | AGrant or award Diodes Incorporated Common Stock | +8,000 | $0.00 | $0 | 54,365 | Feb 5, 2025 |
| Feb 3, 2025 | DIOD DIODES INC /DEL/ | FTax withholding Diodes Incorporated Common Stock | -2,010 | $56.45 | $113k | 52,355 | Feb 5, 2025 |
| Feb 4, 2025 | DIOD DIODES INC /DEL/ | SOpen-market sale Diodes Incorporated Common Stock | -830 | $56.04 | $47k | 51,525 | Feb 5, 2025 |
| Feb 3, 2025 | DIOD DIODES INC /DEL/ | AGrant or award Diodes Incorporated Common Stock - Performance Stock Units | +8,000 | $0.00 | $0 | 30,700 | Feb 5, 2025 |
Questions about Brett R Whitmire
Answered from the filings on this page, as of the latest one.
Is Brett R Whitmire buying or selling?
In the last 12 months Brett R Whitmire reported 0 open-market buys worth $0 and 3 open-market sells worth $2.2M on SEC Form 4; the latest was sold $1.7M of DIOD on May 13, 2026. Grants, option exercises and tax withholding are not counted.
How did Brett R Whitmire's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Brett R Whitmire has 0.
Where does Brett R Whitmire file Form 4?
Brett R Whitmire has filed Form 4 at DIOD (DIODES INC /DEL/) as CFO. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.