Hung-Lun (Fred) Chang is *** See Remarks at APPLIED OPTOELECTRONICS, INC. (AAOI). Chang has reported 22 insider filings with the SEC since 2024. The most recent filing was in July 2026.
Every role Hung-Lun (Fred) Chang 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.
APPLIED OPTOELECTRONICS, INC. (AAOI)2 filingsLatest filing:
Hung-Lun (Fred) Chang is *** See Remarks of APPLIED OPTOELECTRONICS, INC. (AAOI). 21 SEC Form 4 filings on record going back to 2024, most recently on 10 September 2026. Most recent open-market trade: sold $3.55M of AAOI on 10 September 2026. Lifetime open-market sales: $28.24M.
Every recent SEC Form 4 transaction Hung-Lun (Fred) Chang has reported, most recent first.
InsiderAlpha's records for Hung-Lun (Fred) Chang go back to 2024: 21 primary Form 4 filings, an average of 7.0 per year. 3 recorded transactions carry a Rule 10b5-1 plan flag. This identifies the marked transactions as reported under a trading plan; it does not establish the plan status of unmarked transactions.
Insiders who reported open-market trades in the last 12 months at the companies Hung-Lun (Fred) Chang 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.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Hung-Lun (Fred) Chang is a corporate insider, tracked as *** See Remarks of APPLIED OPTOELECTRONICS, INC. (AAOI). InsiderAlpha holds 21 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
2 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases and 11 open-market sales ($28.24M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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$AAOI APPLIED OPTOELECTRONICS, INC.773 shares @ $119.26$92K