Insider Profile · SEC Form 4 Activity · Trailing 90 Days
Chang Hung-lun (fred)
Over the trailing 90 days, Chang Hung-lun (fred) (Other Officer at APPLIED OPTOELECTRONICS, INC.) sold $29.6M of stock in AAOI, per 11 SEC Form 4 transactions.
- Role
- Other Officer
- Companies
- AAOI
- Window
- Trailing 90 days · 11 transactions · CIK 1587462
- Net activity
- −$29.6M ($0 bought · $29.6M sold)
By Company (Trailing 90 Days)
| Symbol | Company | Txns | Bought | Sold | Net |
|---|---|---|---|---|---|
| AAOI | APPLIED OPTOELECTRONICS, INC. | 11 | — | $29.6M | −$29.6M |
Transactions (11)
| Date | Symbol | Type | Shares | Value | Description |
|---|---|---|---|---|---|
| 2026-07-22 | AAOI | Sell | 613 | $73K | Payment of exercise price or tax liability by delivering securities |
| 2026-07-22 | AAOI | Sell | 616 | $73K | Payment of exercise price or tax liability by delivering securities |
| 2026-07-22 | AAOI | Sell | 773 | $92K | Payment of exercise price or tax liability by delivering securities |
| 2026-07-22 | AAOI | Sell | 2.7K | $319K | Payment of exercise price or tax liability by delivering securities |
| 2026-06-17 | AAOI | Sell | 40.3K | $6.9M | Open market or private sale |
| 2026-06-12 | AAOI | Sell | 27.3K | $4.7M | Payment of exercise price or tax liability by delivering securities |
| 2026-06-12 | AAOI | Sell | 34.0K | $5.7M | Open market or private sale |
| 2026-06-05 | AAOI | Sell | 4.0K | $800K | Open market or private sale |
| 2026-05-19 | AAOI | Sell | 33.6K | $5.8M | Open market or private sale |
| 2026-05-19 | AAOI | Sell | 27.3K | $5.2M | Payment of exercise price or tax liability by delivering securities |
| 2026-05-15 | AAOI | Buy | 224.2K | $0 | Grant, award or other acquisition |
Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.
Follow Chang's next move
Real-time Form 4 alerts, insider track records, and cluster detection — matched to your watchlist.