Chih-Hsiang (Thompson) Lin - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Chih-Hsiang (Thompson) Lin has filed 4 SEC Form 4 filings across 1 company in the last 90 days - active on both sides. Lifetime open-market purchases: $984K. Lifetime open-market sales: $19.87M. Historical track record: 4/5 stars across 8 tracked purchases.
Profile
Chih-Hsiang (Thompson) Lin is President and CEO at APPLIED OPTOELECTRONICS, INC. (AAOI). Lin has reported 19 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | President and CEO, Director |
|---|---|
| Notability | 40/100 |
Board memberships
- APPLIED OPTOELECTRONICS, INC.
Reported roles
- President and CEO
Awards & honors
- Led the company as President and CEO
- Oversaw significant product development in optical communications
- Contributed to the growth of the company in the fiber-optic market
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★★★☆ (4/5) |
|---|---|
| Total purchases tracked | 8 |
| Purchases with forward-return data | 8 |
| 30-day win rate | 75% |
| 90-day win rate | 100% |
| Avg 5-day return | +6.81% |
| Avg 30-day return | +17.73% |
| Avg 90-day return | +8.17% |
| Best 30-day return | +40.69% |
Trading Pattern
InsiderAlpha's records for Chih-Hsiang (Thompson) Lin go back to 2024: 17 primary Form 4 filings, an average of 5.7 per year. The typical open-market purchase is $123K (8 buys totaling $984K). The largest single buy on record is $200K of AAOI in 2025. Sales side: 2 recorded sales totaling $19.87M, 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.
Career & Filing History
Every role Chih-Hsiang (Thompson) Lin has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- President and CEO, Director at APPLIED OPTOELECTRONICS, INC. (AAOI) - 17 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-23 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 2.0K | $119.26 | $242K |
| 2026-07-23 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 2.5K | $119.26 | $301K |
| 2026-07-23 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 2.3K | $119.26 | $278K |
| 2026-07-23 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 8.8K | $119.26 | $1.04M |
| 2026-06-16 | AAOI | APPLIED OPTOELECTRONICS, INC. | S - Open-market sale | 59.0K | $166.53 | $9.83M |
| 2026-06-16 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 86.7K | $172.78 | $14.97M |
| 2026-06-01 | AAOI | APPLIED OPTOELECTRONICS, INC. | J - Other acquisition / disposition | 721.8K | - | |
| 2026-06-01 | AAOI | APPLIED OPTOELECTRONICS, INC. | J - Other acquisition / disposition | 721.8K | - | |
| 2026-06-01 | AAOI | APPLIED OPTOELECTRONICS, INC. | G - Bona-fide gift | 85.8K | $0.00 | |
| 2026-06-01 | AAOI | APPLIED OPTOELECTRONICS, INC. | G - Bona-fide gift | 85.8K | $0.00 | |
| 2026-05-19 | AAOI | APPLIED OPTOELECTRONICS, INC. | S - Open-market sale | 58.0K | $173.26 | $10.05M |
| 2026-05-19 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 86.7K | $190.36 | $16.50M |
| 2026-05-19 | AAOI | APPLIED OPTOELECTRONICS, INC. | A - Grant or award | 711.7K | $0.00 | |
| 2026-04-24 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 2.2K | $150.57 | $326K |
| 2026-04-24 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 2.7K | $150.57 | $405K |
| 2026-04-24 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 2.5K | $150.57 | $374K |
| 2026-04-24 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 9.3K | $150.57 | $1.40M |
| 2026-02-11 | AAOI | APPLIED OPTOELECTRONICS, INC. | A - Grant or award | 82.6K | $0.00 | |
| 2026-01-27 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 2.9K | $38.38 | $110K |
| 2026-01-27 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 2.6K | $38.38 | $102K |
Companies - Last 90 Days
- APPLIED OPTOELECTRONICS, INC. (AAOI) - 4 filings, last 2026-07-23
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Chih-Hsiang (Thompson) Lin has recently filed 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 - $23.18M of AAOI open-market activity in the last 12 months
- Shu-Hua (Joshua) Yeh - $19.68M of AAOI open-market activity in the last 12 months
- Stefan J. Murry - $15.75M of AAOI open-market activity in the last 12 months
- David C. Kuo - $13.19M of AAOI open-market activity in the last 12 months
- Cynthia Delaney - $12.76M of AAOI open-market activity in the last 12 months
- Elizabeth G. Loboa - $9.93M 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:
- John W. Childs
- Mahesh Choudhury
- Jonathan H. Cohen
- Ryan Cohen
- Charles K. Cohn
- Coliseum Capital Management, LLC
- Column Group IV GP, LP
- Connect Midstream, LLC
Frequently Asked Questions
Who is Chih-Hsiang (Thompson) Lin?
Chih-Hsiang (Thompson) Lin is President and CEO at APPLIED OPTOELECTRONICS, INC. (AAOI). Lin has reported 19 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Chih-Hsiang (Thompson) Lin submitted recently?
4 primary Form 4 filings in the last 90 days, covering 1 company.
Has Chih-Hsiang (Thompson) Lin been buying or selling stock?
Recorded transactions: 8 open-market purchases ($984K) and 2 open-market sales ($19.87M) across all tracked filings.
How accurate is Chih-Hsiang (Thompson) Lin's historical track record?
Across 8 tracked purchases, Chih-Hsiang (Thompson) Lin averaged +17.7% avg 30-day return with a 75% 30-day win rate. InsiderAlpha rates the track record at 4/5 stars.
Where can I see all of Chih-Hsiang (Thompson) Lin'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.
Learn More
Open the live Chih-Hsiang (Thompson) Lin profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.