Alpha & Omega Semiconductor Limited
A maker of power semiconductors, Alpha & Omega Semiconductor designs the chips inside everyday electronics—from laptops and smartphones to TVs and tablets—that manage, convert, and protect their electrical power. Founded in 2000 in Sunnyvale, California, the company was started by Dr. Mike Chang and fellow engineers from Siliconix. Its name comes from the Greek letters Alpha and Omega, the first and last of the alphabet, hinting at a full spectrum of power solutions from start to finish.
Granted 22.5K · Bought 33.7K
Granted 135.0K · Sold 20.5K
Granted 45.0K · Sold 35.1K
Granted 30.0K · Sold 14.1K
Granted 10.0K
Sold 4.1K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Chang Mike FDirector, 10% owner · 6 transactions | — | 4.36M | 22.5K | 33.7K | — |
| Chang Stephen ChunpingChief Executive Officer, Director · 9 transactions | +12.3% | 634.1K | 135.0K | — | 20.5K |
| Liang YifanCFO and Corp Secretary · 10 transactions | -0.8% | 269.4K | 45.0K | — | 35.1K |
| Xue BingEVP-WW Sales & Bus Development · 8 transactions | +6.6% | 123.7K | 30.0K | — | 14.1K |
| Li WenjunChief Operating Officer · 3 transactions | -4.6% | 68.8K | 10.0K | — | — |
| Chen ClaudiaDirector · 2 transactions | -11.9% | 28.4K | — | — | 4.1K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 6 months: -40.0K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.