Summary
Updated Aug 31, 2026
William H. Yeh is Director of APPLIED OPTOELECTRONICS, INC. (AAOI). 5 SEC Form 4 filings on record going back to 2024, most recently on 11 June 2026. Most recent open-market trade: sold $1.59M of AAOI on 10 March 2026. Lifetime open-market purchases: $406K. Lifetime open-market sales: $2.02M. Historical track record: 5/5 stars across 3 tracked purchases.
Recent Transactions
7Every recent SEC Form 4 transaction William H. Yeh has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★★★ (5/5) |
| Total purchases tracked | 3 |
| Purchases with forward-return data | 3 |
| 30-day win rate | 100% |
| 90-day win rate | 100% |
| Avg 5-day return | +11.80% |
| Avg 30-day return | +25.29% |
| Avg 90-day return | +6.76% |
| Best 30-day return | +40.69% |
Trading Pattern
InsiderAlpha's records for William H. Yeh go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. The typical open-market purchase is $135K (3 buys totaling $406K). The largest single buy on record is $228K of AAOI in 2025. Sales side: 2 recorded sales totaling $2.02M, so the filing history runs sell-heavy by dollar value. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies William H. Yeh files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Hung-Lun (Fred) Chang - $22.82M of AAOI open-market activity in the last 12 months
- Shu-Hua (Joshua) Yeh - $21.16M of AAOI open-market activity in the last 12 months
- Chih-Hsiang (Thompson) Lin - $19.87M of AAOI open-market activity in the last 12 months
- Stefan J. Murry - $16.06M of AAOI open-market activity in the last 12 months
- David C. Kuo - $13.15M of AAOI open-market activity in the last 12 months
- Cynthia Delaney - $12.76M of AAOI open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is William H. Yeh?
William H. Yeh is a corporate insider, tracked as Director of APPLIED OPTOELECTRONICS, INC. (AAOI). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has William H. Yeh submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has William H. Yeh been buying or selling stock?
Recorded transactions: 3 open-market purchases ($406K) and 2 open-market sales ($2.02M) across all tracked filings.
How accurate is William H. Yeh's historical track record?
Across 3 tracked purchases, William H. Yeh averaged +25.3% avg 30-day return with a 100% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
Where can I see all of William H. Yeh's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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