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Shing Mao
Insider
First SEC filing: May 24, 2006 · Latest: May 24, 2006
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 2, 2010 | DIOD | S | 6,000 | $20.92 | $125,520 | 156,625 Direct | -3.69% | Disposed | 396.4% (price as of 2026-10-02) |
| Oct. 5, 2009 | DIOD | M | 106,875 | $1.33 | $142,144 | 162,625 Direct | +191.70% | Acquired | 7707.5% (price as of 2026-10-02) |
| Oct. 5, 2009 | DIOD | M | 106,875 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 28, 2009 | DIOD | A | 6,450 | · | · | 55,750 Direct | +13.08% | Acquired | (price as of 2026-10-02) |
| May 29, 2008 | DIOD | A | 4,300 | · | · | 49,300 Direct | +9.56% | Acquired | (price as of 2026-10-02) |
| Dec. 17, 2007 | DIOD | M | 30,000 | $1.33 | $39,900 | 45,000 Direct | +200.00% | Acquired | 7707.5% (price as of 2026-10-02) |
| Dec. 17, 2007 | DIOD | M | 30,000 | · | · | 61,250 Direct | -32.88% | Disposed | (price as of 2026-10-02) |
| Nov. 29, 2007 | DIOD | S | 9,375 | $29.74 | $278,812 | 15,000 Direct | -38.46% | Disposed | 249.2% (price as of 2026-10-02) |
| May 31, 2007 | DIOD | A | 3,500 | · | · | 16,375 Direct | +27.18% | Acquired | (price as of 2026-10-02) |
| Feb. 12, 2007 | DIOD | M | 10,000 | $2.00 | $20,000 | 41,250 Direct | +32.00% | Acquired | 7688.0% (price as of 2026-10-02) |
| Feb. 12, 2007 | DIOD | S | 2,000 | $35.78 | $71,560 | 39,250 Direct | -4.85% | Disposed | 335.3% (price as of 2026-10-02) |
| Feb. 12, 2007 | DIOD | S | 8,000 | $35.68 | $285,440 | 31,250 Direct | -20.38% | Disposed | 336.5% (price as of 2026-10-02) |
| Feb. 12, 2007 | DIOD | M | 10,000 | · | · | 91,250 Direct | -9.88% | Disposed | (price as of 2026-10-02) |
| May 22, 2006 | DIOD | A | 6,500 | · | · | 31,250 Direct | +26.26% | Acquired | (price as of 2026-10-02) |
| May 18, 2006 | DIOD | S | 10,000 | $36.43 | $364,300 | 24,750 Direct | -28.78% | Disposed | 327.6% (price as of 2026-10-02) |
| Feb. 9, 2006 | DIOD | M | 26,250 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 9, 2006 | DIOD | S | 5,000 | $38.60 | $193,000 | 34,750 Direct | -12.58% | Disposed | 303.5% (price as of 2026-10-02) |
| Feb. 9, 2006 | DIOD | M | 26,250 | $1.78 | $46,725 | 39,750 Direct | +194.44% | Acquired | 8650.6% (price as of 2026-10-02) |
| July 12, 2005 | DIOD | A | 13,000 | · | · | 69,500 Direct | +23.01% | Acquired | (price as of 2026-10-02) |
| Nov. 15, 2004 | DIOD | M | 10,000 | $2.67 | $26,700 | 19,000 Direct | +111.11% | Acquired | 8650.6% (price as of 2026-10-02) |
| Nov. 15, 2004 | DIOD | S | 10,000 | $27.00 | $270,000 | 9,000 Direct | -52.63% | Disposed | 765.3% (price as of 2026-10-02) |
| Nov. 15, 2004 | DIOD | M | 10,000 | · | · | 164,000 Direct | -5.75% | Disposed | (price as of 2026-10-02) |
| July 14, 2004 | DIOD | A | 10,500 | · | · | 174,000 Direct | +6.42% | Acquired | (price as of 2026-10-02) |
| Sept. 2, 2003 | DIOD | S | 9,000 | $21.00 | $189,000 | 6,000 Direct | -60.00% | Disposed | 1568.9% (price as of 2026-10-02) |
| Aug. 28, 2003 | DIOD | S | 3,000 | $21.03 | $63,090 | 15,000 Direct | -16.67% | Disposed | 1566.5% (price as of 2026-10-02) |
| Aug. 22, 2003 | DIOD | S | 8,000 | $21.29 | $170,320 | 18,000 Direct | -30.77% | Disposed | 1546.1% (price as of 2026-10-02) |
| Aug. 1, 2003 | DIOD | A | 9,000 | · | · | 109,000 Direct | +9.00% | Acquired | (price as of 2026-10-02) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Oct. 5, 2009 | DIOD | Common Stock (Right to Buy) | Diodes Inc. Common Stock | $1.33 | Oct. 25, 2009 | 106,875 | Disposed |
| Dec. 17, 2007 | DIOD | Common Stock (Right to Buy) | Diodes Inc. Common Stock | $1.33 | Oct. 25, 2009 | 30,000 | Disposed |
| Feb. 12, 2007 | DIOD | Common Stock (Right to Buy) | Diodes Inc. Common Stock | $2.00 | Oct. 25, 2009 | 10,000 | Disposed |
| Feb. 9, 2006 | DIOD | Common Stock (right to buy) | Common Stock (right to buy) | $1.78 | Aug. 1, 2006 | 26,250 | Disposed |
| July 12, 2005 | DIOD | Common Stock (Right to Buy) | Common Stock | $34.97 | July 12, 2015 | 13,000 | Acquired |
| Nov. 15, 2004 | DIOD | Common Stock (Right to Buy) | Common Stock | $2.67 | Aug. 1, 2006 | 10,000 | Disposed |
| July 14, 2004 | DIOD | Common Stock | Common Stock | $18.32 | July 14, 2014 | 10,500 | Acquired |
| Aug. 1, 2003 | DIOD | Common Stock (Right to Buy) | Common Stock | $19.56 | Aug. 1, 2013 | 9,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).