AOSL
ALPHA & OMEGA SEMICONDUCTOR Ltd · Technology · Market cap $762.5M
Insiders sold $623K net in the last 90 days ·2 sellers, 0 buyers· 4 of 4 sales under Rule 10b5-1 plans· latest Form 4 filed Jul 17, 2026
Insider Buying
$641K
reported purchases (SEC code P)
Insider Selling
$2.7M
reported sales (SEC code S)
Unique Insiders
5
in the rolling window
Latest filing
Aug 14, 2026
Xue Bing
ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL) has 45 SEC Form 4 filings (70 transaction rows) in the rolling window, disclosed by 5 distinct insiders. Most recent filing: Aug 14, 2026.
Inside the rolling window, 5 insiders at ALPHA & OMEGA SEMICONDUCTOR Ltd reported 1 open-market purchase totaling $641K and 14 open-market sales totaling $2.7M. The most active filer is EVP-WW Sales & Bus Development Xue Bing with 9 filings. Insiders have net sold $2.0M over the trailing 6 months. The most recent open-market filing is a sale of 875 shares by EVP-WW Sales & Bus Development Xue Bing, dated Jul 16, 2026, worth $30K.
- Industry:Semiconductors
- CEO:Stephen Chunping Chang
- Employees:2,428
- HQ:Sunnyvale, CA, US
- IPO:2010-04-29
| Source | |||||||
|---|---|---|---|---|---|---|---|
| EVP-WW Sales & Bus Development | Sale | 875 | $30K | Jul 17 | -19.4% | SEC ↗ | |
| EVP-WW Sales & Bus Development | Sale | 4,916 | $231K | Jun 17 | -41.6% | SEC ↗ | |
Chen ClaudiaFirst filing | Director | Sale | 4,061 | $161K | May 26 | -47.4% | SEC ↗ |
| EVP-WW Sales & Bus Development | Sale | 4,916 | $202K | May 20 | -37.9% | SEC ↗ | |
| Chief Executive Officer | Sale | 14,884 | $513K | Apr 20 | -36.8% | SEC ↗ | |
| EVP-WW Sales & Bus Development | Sale | 1,832 | $57K | Apr 20 | -36.8% | SEC ↗ | |
| CFO and Corp Secretary | Sale | 8,625 | $302K | Apr 20 | -36.8% | SEC ↗ | |
Liang YifanFirst filing | CFO and Corp Secretary | Sale | 26,517 | $810K | Apr 16 | — | SEC ↗ |
Chang Stephen ChunpingFirst filing | Chief Executive Officer | Sale | 5,594 | $178K | Apr 16 | — | SEC ↗ |
| EVP-WW Sales & Bus Development | Sale | 2,408 | $53K | Mar 18 | — | SEC ↗ | |
Chang Mike FFirst filing | Director, 10% Owner | Purchase | 33,727 | $641K | Mar 10 | — | SEC ↗ |
| EVP-WW Sales & Bus Development | Sale | 2,460 | $55K | Feb 18 | — | SEC ↗ | |
| EVP-WW Sales & Bus Development | Sale | 737 | $17K | Jan 16 | — | SEC ↗ | |
| EVP-WW Sales & Bus Development | Sale | 1,845 | $38K | Dec 16 | — | SEC ↗ | |
Xue BingFirst filing | EVP-WW Sales & Bus Development | Sale | 1,845 | $34K | Nov 17 | — | SEC ↗ |
Congress trading AOSL 1 all-time
- DRep. Tom MalinowskiOther$1,001 - $15,0002021-02-16
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does AOSL have?
ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL) has 45 SEC Form 4 filings (70 transaction rows) in the rolling 365-day window, disclosed by 5 distinct insiders. Most recent filing: Aug 14, 2026.
When was the most recent SEC Form 4 filing for AOSL?
The most recent Form 4 filing for AOSL on Tracefour is dated Aug 14, 2026.
Who is the most active insider at AOSL?
The most active SEC Form 4 filer at AOSL in the rolling window is EVP-WW Sales & Bus Development Xue Bing, with 9 filings.
What is the net insider flow at AOSL over the last 6 months?
Over the trailing 180 days, insiders at AOSL have net sold $2.0M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at AOSL in the current window?
Inside the rolling window, insiders at AOSL bought $641K and sold $2.7M based on SEC Form 4 filings.
Can I get alerts for AOSL insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
ALPHA & OMEGA SEMICONDUCTOR Ltd is in the Technology sector.