Chang Hung-Lun (Fred) — Insider Trades & Holdings | InsiderBid

Chang Hung-Lun (Fred)

Form 4 filings across 1 company. Net figures count open-market buys and sales only. EDGAR profile ↗

Lifetime net: -$27.2M

Positions by company

Reported holding is the most recent post-transaction share count on a Table I row.

Every company this insider has reported trading in, with the value bought and sold at each and the date they last traded.
Ticker	Company	Bought	Sold	Net	Shares held	Last trade
AAOI	Applied Optoelectronics, INC.	$0	$27.2M	-$27.2M	249,276	Sep 8

Applied Optoelectronics, INC.

-$27.2M

Bought

$0

Sold

$27.2M

Held

249,276

Filing record

How quickly this filer reports. Section 16 allows two business days from the transaction.

All 18 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Trade history

The 41 most recent Form 4 transactions.

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Ticker	Company	Type	Shares	Price	Value	Δ Own	Filing
Sep 8	AAOI	Applied Optoelectronics,…	SSELL	32,172	$110.21	$3.5M	-11.4%	Open the original filing on SEC.gov
Jul 22	AAOI	Applied Optoelectronics,…	FTAX	616	$119.26	$73.5K	-0.2%	Open the original filing on SEC.gov

AAOISSELL$3.5M

Applied Optoelectronics,…Sep 8

32,172 sh @ $110.21 · -11.4% own

AAOIFTAX$73.5K

Applied Optoelectronics,…Jul 22

616 sh @ $119.26 · -0.2% own

AAOIFTAX$92.2K

Applied Optoelectronics,…Jul 22

773 sh @ $119.26 · -0.3% own

AAOIFTAX$73.1K

Applied Optoelectronics,…Jul 22

613 sh @ $119.26 · -0.2% own

AAOIFTAX$318.9K

Applied Optoelectronics,…Jul 22

2,674 sh @ $119.26 · -0.9% own

AAOISSELL◷$6.9M

Applied Optoelectronics,…Jun 17

40,329 sh @ $170.60 · -12.3% own

AAOISSELL$5.7M

Applied Optoelectronics,…Jun 12

34,000 sh @ $166.53 · -9.4% own

AAOIFTAX$4.7M

Applied Optoelectronics,…Jun 12

27,297 sh @ $172.78 · -7.0% own

AAOISSELL$800.3K

Applied Optoelectronics,…Jun 5

4,000 sh @ $200.07 · -1.0% own

AAOISSELL$5.8M

Applied Optoelectronics,…May 19

33,630 sh @ $173.26 · -7.9% own

AAOIFTAX$5.2M

Applied Optoelectronics,…May 19

27,297 sh @ $190.36 · -6.0% own

AAOIAGRANT—

Applied Optoelectronics,…May 15

224,199 sh · +98.1% own

AAOIFTAX$101.9K

Applied Optoelectronics,…Apr 22

677 sh @ $150.57 · -0.3% own

AAOIFTAX$128K

Applied Optoelectronics,…Apr 22

850 sh @ $150.57 · -0.4% own

AAOIFTAX$101.3K

Applied Optoelectronics,…Apr 22

673 sh @ $150.57 · -0.3% own

AAOIFTAX$442.7K

Applied Optoelectronics,…Apr 22

2,940 sh @ $150.57 · -1.3% own

AAOISSELL$3.6M

Applied Optoelectronics,…Mar 16

36,400 sh @ $100.25 · -13.5% own

AAOIAGRANT—

Applied Optoelectronics,…Feb 9

25,799 sh · +10.6% own

AAOIFTAX$32.6K

Applied Optoelectronics,…Jan 22

850 sh @ $38.38 · -0.4% own

AAOIFTAX$25.9K

Applied Optoelectronics,…Jan 22

674 sh @ $38.38 · -0.3% own

AAOIFTAX$112.8K

Applied Optoelectronics,…Jan 22

2,940 sh @ $38.38 · -1.2% own

AAOIFTAX$71.9K

Applied Optoelectronics,…Jan 22

1,874 sh @ $38.38 · -0.8% own

AAOIFTAX$25.9K

Applied Optoelectronics,…Oct 22, 2025

774 sh @ $33.40 · -0.3% own

AAOIFTAX$20.5K

Applied Optoelectronics,…Oct 22, 2025

614 sh @ $33.40 · -0.2% own

AAOIFTAX$89.4K

Applied Optoelectronics,…Oct 22, 2025

2,676 sh @ $33.40 · -1.1% own

AAOIFTAX$56.9K

Applied Optoelectronics,…Oct 22, 2025

1,705 sh @ $33.40 · -0.7% own

AAOISSELL$358.3K

Applied Optoelectronics,…Aug 13, 2025

15,784 sh @ $22.70 · -5.8% own

AAOIFTAX$21.9K

Applied Optoelectronics,…Jul 22, 2025

774 sh @ $28.23 · -0.3% own

AAOIFTAX$17.3K

Applied Optoelectronics,…Jul 22, 2025

613 sh @ $28.23 · -0.2% own

AAOIFTAX$75.5K

Applied Optoelectronics,…Jul 22, 2025

2,675 sh @ $28.23 · -1.0% own

AAOIFTAX$48.1K

Applied Optoelectronics,…Jul 22, 2025

1,704 sh @ $28.23 · -0.6% own

AAOIFTAX$27.3K

Applied Optoelectronics,…Jul 22, 2025

966 sh @ $28.23 · -0.4% own

AAOIFTAX$804.7K

Applied Optoelectronics,…May 13, 2025

54,516 sh @ $14.76 · -15.3% own

AAOISSELL$454.3K

Applied Optoelectronics,…May 13, 2025

23,837 sh @ $19.06 · -7.9% own

AAOIAGRANT—

Applied Optoelectronics,…May 9, 2025

142,857 sh · +66.6% own

AAOIFTAX$7.8K

Applied Optoelectronics,…Apr 30, 2025

774 sh @ $10.05 · -0.4% own

AAOIFTAX$6.2K

Applied Optoelectronics,…Apr 22, 2025

614 sh @ $10.05 · -0.3% own

AAOIFTAX$26.9K

Applied Optoelectronics,…Apr 22, 2025

2,675 sh @ $10.05 · -1.2% own

AAOIFTAX$17.1K

Applied Optoelectronics,…Apr 22, 2025

1,705 sh @ $10.05 · -0.8% own

AAOIFTAX$9.7K

Applied Optoelectronics,…Apr 22, 2025

967 sh @ $10.05 · -0.4% own

AAOIAGRANT—

Applied Optoelectronics,…Apr 11, 2025

32,397 sh · +17.2% own