Chang Hung-Lun (Fred)
*** See Remarks
Chang Hung-Lun (Fred) has filed 10 SEC Form 4 filings (25 transaction rows) across 1 company, with disclosures dating back to 2025. 10 of those filings fall inside the rolling window. Most recent filing: Jul 23, 2026.
On the most recent filing, Chang Hung-Lun (Fred) is listed as *** See Remarks at APPLIED OPTOELECTRONICS, INC. Inside the rolling window, Chang Hung-Lun (Fred) reported no open-market purchases and 5 open-market sales totaling $22.8M in AAOI. The largest disclosed transaction in the window is a sale of 40,329 AAOI shares on Jun 17, 2026, worth $6.9M.
Companies traded
Other insiders at AAOI
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$22.8M
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Chang Hung-Lun (Fred) made?
Chang Hung-Lun (Fred) has filed 10 SEC Form 4 filings (25 transaction rows) across 1 company since 2025.
Which companies does Chang Hung-Lun (Fred) trade?
Chang Hung-Lun (Fred) has filed SEC Form 4 disclosures for 1 company, including AAOI.
When was Chang Hung-Lun (Fred)'s most recent SEC Form 4 filing?
Chang Hung-Lun (Fred)'s most recent SEC Form 4 filing on Tracefour is dated Jul 23, 2026.
What is Chang Hung-Lun (Fred)'s job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Chang Hung-Lun (Fred) is listed as *** See Remarks.
What is Chang Hung-Lun (Fred)'s total buy and sell value in the current window?
Inside the rolling retention window, Chang Hung-Lun (Fred) bought $0 and sold $22.8M based on SEC Form 4 filings.
What was Chang Hung-Lun (Fred)'s largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 40,329 AAOI shares on 2026-06-17, worth $6.9M, per SEC Form 4 filings.