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AAOI Insider Trading & Form 4 Activity

APPLIED OPTOELECTRONICS, INC.
Last filing: Jun 8, 2026·1 day ago
BEARISH · LAST 90 DAYS
0%
buyers
$0
0 buys
$45.9M
9 sells
-$45.9M
net selling
7
insiders
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ACTIVE SELLING CLUSTER

7 insiders sold a combined $44.1M of AAOI between May 19, 2026 and Jun 2, 2026.

Yeh Shu-Hua (Joshua), Kuo David C, Murry Stefan J., Lin Chih-Hsiang (Thompson), Chang Hung-Lun (Fred) and 2 more

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Net flow — last 12 months

Monthly net of insider buys minus sells. Green months indicate net buying; red months indicate net selling.

Most active insiders

Ranked by total transaction value over the last 90 days.

INSIDERBOUGHTSOLDNET
DeLaney Cynthia
Insider
$10.7M
-$10.7M
Lin Chih-Hsiang (Thompson)
President and CEO
$10.0M
-$10.0M
Yeh Shu-Hua (Joshua)
*** See Remarks
$7.8M
-$7.8M
Chang Hung-Lun (Fred)
*** See Remarks
$6.6M
-$6.6M
Murry Stefan J.
Chief Financial Officer
$6.4M
-$6.4M
Kuo David C
*** See Remarks
$3.3M
-$3.3M
Chen Min-Chu (Mike)
Insider
$1.7M
-$1.7M

Recent transactions

Every Form 4 transaction for AAOI, newest first.

SELL
Chang Hung-Lun (Fred) · *** See Remarks
Tx Jun 5·Filed Jun 8·EDGAR ↗
4,000 sh @ $200.07
$800K
SELL
Yeh Shu-Hua (Joshua) · *** See Remarks
Tx Jun 4·Filed Jun 8·EDGAR ↗
5,000 sh @ $204.75
$1.0M
SELL
Chen Min-Chu (Mike) · Insider
Tx Jun 2·Filed Jun 4·EDGAR ↗
8,247 sh @ $201.00
$1.7M
OTHER
Lin Chih-Hsiang (Thompson) · President and CEO
Tx May 28·Filed Jun 1·EDGAR ↗
721,812 sh
GIFT
Lin Chih-Hsiang (Thompson) · President and CEO
Tx May 28·Filed Jun 1·EDGAR ↗
85,790 sh
SELL
DeLaney Cynthia · Insider
Tx May 26·Filed May 28·EDGAR ↗
56,575 sh @ $189.23
$10.7M
SELL
Yeh Shu-Hua (Joshua) · *** See Remarks
Tx May 19·Filed May 19·EDGAR ↗
39,154 sh @ $173.26
$6.8M
TAX
Murry Stefan J. · Chief Financial Officer
Tx May 19·Filed May 19·EDGAR ↗
30,330 sh @ $190.36
$5.8M
SELL
Kuo David C · *** See Remarks
Tx May 19·Filed May 19·EDGAR ↗
19,227 sh @ $173.26
$3.3M
TAX
Kuo David C · *** See Remarks
Tx May 19·Filed May 19·EDGAR ↗
19,064 sh @ $190.36
$3.6M
SELL
Murry Stefan J. · Chief Financial Officer
Tx May 19·Filed May 19·EDGAR ↗
33,000 sh @ $173.26
$5.7M
SELL
Lin Chih-Hsiang (Thompson) · President and CEO
Tx May 19·Filed May 19·EDGAR ↗
58,000 sh @ $173.26
$10.0M
TAX
Chang Hung-Lun (Fred) · *** See Remarks
Tx May 19·Filed May 19·EDGAR ↗
27,297 sh @ $190.36
$5.2M
SELL
Chang Hung-Lun (Fred) · *** See Remarks
Tx May 19·Filed May 19·EDGAR ↗
33,630 sh @ $173.26
$5.8M
TAX
Lin Chih-Hsiang (Thompson) · President and CEO
Tx May 19·Filed May 19·EDGAR ↗
86,655 sh @ $190.36
$16.5M
TAX
Yeh Shu-Hua (Joshua) · *** See Remarks
Tx May 19·Filed May 19·EDGAR ↗
7,928 sh @ $190.36
$1.5M
AWARD
Yeh Shu-Hua (Joshua) · *** See Remarks
Tx May 15·Filed May 19·EDGAR ↗
192,170 sh
AWARD
Murry Stefan J. · Chief Financial Officer
Tx May 15·Filed May 19·EDGAR ↗
249,110 sh
AWARD
Chang Hung-Lun (Fred) · *** See Remarks
Tx May 15·Filed May 19·EDGAR ↗
224,199 sh
AWARD
Lin Chih-Hsiang (Thompson) · President and CEO
Tx May 15·Filed May 19·EDGAR ↗
711,743 sh
AWARD
Kuo David C · *** See Remarks
Tx May 15·Filed May 19·EDGAR ↗
156,583 sh
SELL10b5-1
Murry Stefan J. · Chief Financial Officer
Tx May 11·Filed May 13·EDGAR ↗
4,000 sh @ $159.53
$638K

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About AAOI insider trading data

Form 4 is the SEC filing required when an officer, director, or 10% owner of a public company buys or sells the company's stock. By law, these filings must be submitted within two business days of the trade. Tracenotes pulls every Form 4 filing for AAOI from EDGAR, parses it, and surfaces the activity on this page.

What insider buying tells you. Open-market purchases by insiders are widely studied as a meaningful signal. Unlike stock awards (which are compensation, not conviction), an executive spending their own money to buy shares of the company they run is a vote of confidence. Studies have found insider-buying clusters — three or more insiders buying within a short window — outperform the broader market over the following year.

What insider selling tells you. Selling is noisier. Many sales are pre-scheduled under SEC Rule 10b5-1 plans, which let insiders sell on a fixed schedule regardless of company news. We label these "10b5-1" so you can see them. Discretionary sales — sales not tied to a plan — are more meaningful, especially when multiple insiders sell in quick succession.

Tracenotes methodology. We scan EDGAR daily for new Form 4 filings, parse them into individual transactions, and detect clusters when three or more distinct insiders buy or sell within a 14-day window. The data on this page covers the last 12 months. For deeper analysis, Tracenotes also runs language-change detection on 10-K and 10-Q filings — that's our core product.

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Frequently asked questions

What is a Form 4 filing?

Form 4 is the SEC disclosure required when a company insider — an officer, director, or 10% owner — buys or sells the company's stock. By law these filings must be submitted within two business days of the trade.

Is insider buying AAOI always bullish?

Open-market purchases by insiders are widely viewed as a bullish signal because executives are spending their own money. Stock awards and option exercises are part of compensation and don't carry the same weight, which is why we treat them separately on this page.

What is a 10b5-1 trade?

A trade made under SEC Rule 10b5-1, which lets insiders pre-schedule sales weeks or months in advance. These sales execute on a fixed plan regardless of company news, so they're a weaker signal than discretionary sales. We label them with a "10b5-1" tag.

What is an insider cluster?

A cluster is when three or more distinct insiders buy or sell within a 14-day window. Clusters are studied as stronger signals than single trades because multiple people independently reach the same view. We surface active clusters on APPLIED OPTOELECTRONICS, INC. (AAOI) when they form.

Where does AAOI insider trading data come from?

Every Form 4 filing for AAOI is sourced directly from SEC EDGAR. Tracenotes scans EDGAR daily, parses each Form 4 into individual transactions, and updates this page within hours of new filings.

Nothing on this page constitutes investment advice. Form 4 data is sourced from SEC EDGAR and provided for research purposes only.

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