DIOD Insider Trading
DIODES INC /DEL/ | Semiconductors & Related Devices
Comprehensive Trading Performance Summary
The investment history of corporate insiders at DIODES INC /DEL/ provides a unique lens into the internal conviction of the company's leadership. By analyzing SEC Form 4 filings, investors can track how directors and officers are allocating their own capital. High-conviction buying often signals that management believes the current market price significantly undervalues future growth prospects, while strategic selling might occur for personal liquidity or portfolio diversification. Monitoring these shifts in ownership is essential for understanding the alignment between management and shareholders in the Semiconductors & Related Devices sector.
Transactions on Chart
Open Full Chart| Filing Date | Trade Date | Reporting Person | Relationship | Type | Price | Qty | Total, $ | Owned After | Change, % |
|---|---|---|---|---|---|---|---|---|---|
| 2009-02-25 03:12 | 2009-02-24 | Tang Shiao Kwang Edmund | Officer - VP of Corporate Administration | BUY | $7.33 | 3,000 | $21,985 | 26,931 | +12.5% |
| 2009-02-24 01:39 | 2009-02-19 | LU KEH SHEW | Director, Officer - President & CEO | BUY | $6.93 | 40,500 | $280,706 | 917,908 | +4.6% |
| 2008-11-22 01:00 | 2008-11-21 | Tang Shiao Kwang Edmund | Officer - VP of Corporate Administration | BUY | $3.75 | 3,000 | $11,237 | 23,781 | +14.4% |
| 2008-11-22 03:49 | 2008-11-20 | LU KEH SHEW | Director, Officer - President & CEO | BUY | $3.85 | 120,000 | $462,000 | 887,908 | +15.6% |
| 2008-11-22 03:46 | 2008-11-19 | LU KEH SHEW | Director, Officer - President & CEO | BUY | $4.45 | 57,509 | $256,042 | 887,908 | +6.9% |
| 2008-11-21 02:32 | 2008-11-14 | Tang Shiao Kwang Edmund | Officer - VP of Corporate Administration | BUY | $4.81 | 12,000 | $57,743 | 20,781 | +136.7% |
| 2008-11-20 03:27 | 2008-11-17 | White Richard Dallas | Officer - Sr.VP of Finance | BUY | $4.86 | 4,000 | $19,450 | 15,713 | +34.2% |
| 2008-11-20 03:26 | 2008-11-18 | LU KEH SHEW | Director, Officer - President & CEO | BUY | $4.71 | 62,491 | $294,458 | 710,399 | +9.6% |
| 2008-11-18 01:25 | 2008-11-13 | LU KEH SHEW | Director, Officer - President & CEO | BUY | $4.96 | 80,000 | $397,000 | 647,908 | +14.1% |
| 2008-10-07 03:19 | 2008-10-06 | Lee Tung Cheo | Officer - VP Packaging Operations | SELL | $13.46 | 938 | $12,625 | 9,375 | -9.1% |
| 2008-08-19 01:39 | 2008-08-15 | GIORDANO MICHAEL R | Director | OPT+S | $27.63 | 8,250 | $227,948 | 34,999 | 0.0% |
| 2008-06-25 01:49 | 2008-06-24 | Lee Tung Cheo | Officer - VP Packaging Operations | SELL | $28.79 | 1,500 | $43,192 | 7,500 | -16.7% |
| 2008-06-13 02:19 | 2008-06-11 | CHEN C H | Director | OPT+S | $29.60 | 50,000 | $1,480,000 | 264,504 | 0.0% |
| 2008-06-05 00:39 | 2008-06-04 | Tang Francis | Officer - VP of Product Development | SELL | $27.82 | 223 | $6,204 | 8,327 | -2.6% |
| 2008-06-05 00:41 | 2008-06-04 | Ho Steven | Officer - President Asia Operations | SELL | $27.70 | 59 | $1,634 | 18,717 | -0.3% |
| 2008-06-05 00:37 | 2008-06-04 | WERTZ CARL C | Officer - CFO, Secretary & Treasurer | SELL | $27.87 | 937 | $26,115 | 8,683 | -9.7% |
| 2008-06-05 00:39 | 2008-06-04 | LIU JOSEPH | Officer - Sr. VP, Operations | SELL | $27.80 | 389 | $10,816 | 87,980 | -0.4% |
| 2008-06-05 00:38 | 2008-06-04 | KING MARK A | Officer - SVP Sales & Marketing | SELL | $27.88 | 1,125 | $31,360 | 10,499 | -9.7% |
| 2008-05-28 21:04 | 2008-05-23 | Ho Steven | Officer - President Asia Operations | SELL | $26.46 | 59 | $1,561 | 14,976 | -0.4% |
| 2008-05-28 02:38 | 2008-05-23 | Tang Francis | Officer - VP of Product Development | SELL | $26.46 | 227 | $6,007 | 5,550 | -3.9% |
| 2008-05-28 02:45 | 2008-05-23 | WERTZ CARL C | Officer - CFO, Secretary & Treasurer | SELL | $26.46 | 1,125 | $29,769 | 6,620 | -14.5% |
| 2008-05-28 02:21 | 2008-05-23 | LIU JOSEPH | Officer - Sr. VP, Operations | SELL | $26.46 | 411 | $10,875 | 83,369 | -0.5% |
| 2008-05-24 02:17 | 2008-05-23 | Ho Steven | Officer - President Asia Operations | SELL | $26.46 | 59 | $1,561 | 21,214 | -0.3% |
| 2008-05-24 02:20 | 2008-05-23 | KING MARK A | Officer - SVP Sales & Marketing | SELL | $26.46 | 1,313 | $34,743 | 7,124 | -15.6% |
| 2008-05-17 01:54 | 2008-02-15 | GIORDANO MICHAEL R | Director | OPT+S | $23.84 | 12,000 | $286,061 | 27,420 | 0.0% |
| 2008-05-17 01:53 | 2008-05-15 | GIORDANO MICHAEL R | Director | OPT+S | $27.12 | 12,000 | $325,454 | 27,420 | 0.0% |
| 2007-12-04 03:31 | 2007-11-29 | MAO SHING | Director | SELL | $29.74 | 9,375 | $278,766 | 15,000 | -38.5% |
| 2007-11-30 01:01 | 2007-11-28 | Ho Steven | Officer - VP Asia President | SELL | $29.56 | 16,875 | $498,882 | 0 | -100.0% |
| 2007-11-17 03:17 | 2007-11-15 | GIORDANO MICHAEL R | Director | OPT+S | $29.26 | 12,000 | $351,068 | 27,420 | 0.0% |
| 2007-08-17 01:34 | 2007-08-15 | GIORDANO MICHAEL R | Director | OPT+S | $28.04 | 12,000 | $336,520 | 27,420 | 0.0% |
| 2007-08-10 01:56 | 2007-08-09 | KING MARK A | Officer - Sr. VP, Operations | OPT+S | $30.73 | 40,500 | $1,244,719 | 8,437 | 0.0% |
| 2007-08-10 01:51 | 2007-08-09 | KING MARK A | Officer - Sr. VP, Operations | OPT+S | $30.87 | 40,500 | $1,250,389 | 8,437 | 0.0% |
| 2007-07-12 00:40 | 2007-07-10 | WERTZ CARL C | Officer - CFO, Secretary & Treasurer | OPT+S | $43.49 | 14,847 | $645,767 | 5,165 | 0.0% |
| 2007-07-10 21:03 | 2007-07-09 | CHEN C H | Director | OPT+S | $42.75 | 20,000 | $855,000 | 89,000 | 0.0% |
| 2007-07-04 00:56 | 2007-07-03 | WERTZ CARL C | Officer - CFO, Secretary & Treasurer | OPT+S | $42.00 | 7,500 | $315,000 | 5,165 | 0.0% |
| 2007-07-04 00:53 | 2007-07-03 | CHEN C H | Director | OPT+S | $42.00 | 17,500 | $735,000 | 89,000 | 0.0% |
| 2007-06-19 18:34 | 2007-06-18 | LIU JOSEPH | Officer - Sr. VP, Operations | OPT+S | $40.00 | 40,000 | $1,600,000 | 55,853 | 0.0% |
| 2007-06-13 20:31 | 2007-06-12 | LIU JOSEPH | Officer - Sr. VP, Operations | OPT+S | $38.00 | 19,716 | $749,208 | 55,853 | 0.0% |
| 2007-06-04 20:03 | 2007-05-30 | LIU JOSEPH | Officer - Sr. VP, Operations | OPT+S | $36.15 | 34,052 | $1,231,109 | 49,353 | 0.0% |
| 2007-05-30 00:51 | 2007-05-29 | LIU JOSEPH | Officer - Sr. VP, Operations | OPT+S | $36.00 | 1,020 | $36,720 | 49,353 | 0.0% |
| 2007-05-24 21:00 | 2007-05-23 | WERTZ CARL C | Officer - CFO, Secretary & Treasurer | SELL | $35.54 | 750 | $26,653 | 415 | -64.4% |
| 2007-05-24 20:51 | 2007-05-23 | LIU JOSEPH | Officer - Sr. VP, Operations | OPT+S | $36.02 | 14,928 | $537,753 | 49,750 | 0.0% |
| 2007-05-24 20:57 | 2007-05-23 | KING MARK A | Officer - Sr. VP, Operations | SELL | $35.54 | 875 | $31,095 | 0 | -100.0% |
| 2007-05-16 21:54 | 2007-05-15 | GIORDANO MICHAEL R | Director | OPT+S | $35.68 | 8,000 | $285,432 | 6,030 | 0.0% |
| 2007-05-04 21:18 | 2007-05-03 | LIU JOSEPH | Officer - Sr. VP, Operations | OPT+S | $38.00 | 28,983 | $1,101,354 | 48,750 | 0.0% |
| 2007-04-23 21:48 | 2007-04-20 | LIU JOSEPH | Officer - Sr. VP, Operations | OPT+S | $38.00 | 1,017 | $38,646 | 48,750 | 0.0% |
| 2007-03-09 22:39 | 2007-03-08 | LIU JOSEPH | Officer - Sr. VP, Operations | OPT+S | $36.09 | 30,000 | $1,082,775 | 48,750 | 0.0% |
| 2007-02-16 03:17 | 2007-02-15 | GIORDANO MICHAEL R | Director | OPT+S | $36.59 | 8,000 | $292,688 | 6,030 | 0.0% |
| 2007-02-13 21:49 | 2007-02-12 | MAO SHING | Director | OPT+S | $35.70 | 10,000 | $357,000 | 31,250 | 0.0% |
| 2006-11-17 02:24 | 2006-11-15 | GIORDANO MICHAEL R | Director | OPT+S | $41.15 | 8,000 | $329,160 | 8,530 | 0.0% |
How to Interpret $DIOD Trades
Not every insider transaction in DIODES INC /DEL/ is a signal for immediate action. Professional investors look for "cluster buying"—when multiple executives simultaneously purchase $DIOD shares on the open market. It is crucial to distinguish between scheduled sales (under Rule 10b5-1) and voluntary increases in ownership, which demonstrate management’s true conviction that the stock is undervalued.
Data Source & Accuracy for DIOD
Insider activity data for DIODES INC /DEL/ is streamed in real-time directly from the SEC EDGAR system. We analyze raw Form 4 filings, filtering out technical adjustments and complex derivative transactions. This provides a transparent view of how ownership structure is evolving in $DIOD, allowing you to follow the capital of those with the most intimate knowledge of the company.
UNDERSTANDING THE DATA
FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.
TRADE DATE: The actual day the insider executed the purchase or sale in the market.
INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.
OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.
CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.
TRADE TYPES DEFINITIONS
BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.
SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.
OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.