David C. Kuo - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
David C. Kuo has filed 3 SEC Form 4 filings across 1 company in the last 90 days - selling. Lifetime open-market sales: $14.26M.
Profile
David C. Kuo is *** See Remarks at APPLIED OPTOELECTRONICS, INC. (AAOI). Kuo has reported 23 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | *** See Remarks |
|---|---|
| Notability | 20/100 |
Board memberships
- APPLIED OPTOELECTRONICS, INC.
Reported roles
- *** See Remarks
Trading Pattern
InsiderAlpha's records for David C. Kuo go back to 2024: 20 primary Form 4 filings, an average of 6.7 per year. 9 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role David C. Kuo 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.
- *** See Remarks at APPLIED OPTOELECTRONICS, INC. (AAOI) - 20 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-23 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 407 | $119.26 | $49K |
| 2026-07-23 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 516 | $119.26 | $62K |
| 2026-07-23 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 472 | $119.26 | $56K |
| 2026-07-23 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 1.9K | $119.26 | $223K |
| 2026-06-16 | AAOI | APPLIED OPTOELECTRONICS, INC. | S - Open-market sale | 29.2K | $166.53 | $4.87M |
| 2026-06-16 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 19.1K | $172.78 | $3.29M |
| 2026-05-19 | AAOI | APPLIED OPTOELECTRONICS, INC. | S - Open-market sale | 19.2K | $173.26 | $3.33M |
| 2026-05-19 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 19.1K | $190.36 | $3.63M |
| 2026-05-19 | AAOI | APPLIED OPTOELECTRONICS, INC. | A - Grant or award | 156.6K | $0.00 | |
| 2026-04-24 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 447 | $150.57 | $67K |
| 2026-04-24 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 567 | $150.57 | $85K |
| 2026-04-24 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 518 | $150.57 | $78K |
| 2026-04-24 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 2.1K | $150.57 | $309K |
| 2026-03-23 | AAOI | APPLIED OPTOELECTRONICS, INC. | S - Open-market sale | 29.0K | $100.13 | $2.90M |
| 2026-02-11 | AAOI | APPLIED OPTOELECTRONICS, INC. | S - Open-market sale [10b5-1] | 17.5K | $50.17 | $876K |
| 2026-02-11 | AAOI | APPLIED OPTOELECTRONICS, INC. | S - Open-market sale [10b5-1] | 2.5K | $50.00 | $127K |
| 2026-02-11 | AAOI | APPLIED OPTOELECTRONICS, INC. | A - Grant or award [10b5-1] | 17.0K | $0.00 | |
| 2026-01-30 | AAOI | APPLIED OPTOELECTRONICS, INC. | S - Open-market sale [10b5-1] | 12.0K | $45.05 | $541K |
| 2026-01-27 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 567 | $38.38 | $22K |
| 2026-01-27 | AAOI | APPLIED OPTOELECTRONICS, INC. | F - Tax withholding / forfeiture | 519 | $38.38 | $20K |
Companies - Last 90 Days
- APPLIED OPTOELECTRONICS, INC. (AAOI) - 3 filings, last 2026-07-23
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies David C. Kuo 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
- Chih-Hsiang (Thompson) Lin - $20.47M 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
- 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:
- Charles A. Davis
- Deep Track Biotechnology Master Fund, Ltd.
- Robert E. Dixon
- Romeo R. Dizon
- Kevin Michael Donahue
- DONEGAL MUTUAL INSURANCE CO
- DORCHESTER MINERALS OPERATING LP
- Robert W. Duggan
Frequently Asked Questions
Who is David C. Kuo?
David C. Kuo is *** See Remarks at APPLIED OPTOELECTRONICS, INC. (AAOI). Kuo has reported 23 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has David C. Kuo submitted recently?
3 primary Form 4 filings in the last 90 days, covering 1 company.
Has David C. Kuo been buying or selling stock?
Recorded transactions: 0 open-market purchases and 13 open-market sales ($14.26M) across all tracked filings.
Where can I see all of David C. Kuo'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 David C. Kuo profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.