AAOI insider files Form 144 to sell 34,000 shares

Chang Hung-Lun (Fred) filed a Form 144 reporting a proposed sale of 34,000 common shares on 06/12/2026.

Rhea-AI Filing Summary

Chang Hung-Lun (Fred) filed a Form 144 reporting a proposed sale of 34,000 common shares on 06/12/2026. The filing lists Citigroup Global Markets as the broker and notes recent disposals of common shares on 03/16/2026 (36,400 shares), 05/19/2026 (33,630 shares) and 06/05/2026 (4,000 shares).

Insights

Securities Compliance Attorney

Routine Form 144 notice of proposed sale by an insider; brokerage and recent transactions listed.

The filing documents a proposed disposition of 34,000 shares by Chang Hung-Lun with Citigroup Global Markets named as broker. Form 144s notify the SEC of planned sales under Rule 144 and do not, by themselves, effect a transfer.

Cash‑flow treatment and method of sale are shown via the broker line in the excerpt; timing and execution remain subject to market mechanics and compliance with resale limitations.

Key Figures

Proposed sale: 34,000 shares Prior sale: 36,400 shares Prior sale: 33,630 shares +1 more

4 metrics

Proposed sale 34,000 shares proposed sale on <date>06/12/2026</date>

Prior sale 36,400 shares sold on <date>03/16/2026</date> for $3,648,918.00 (excerpt shows dollar figure)

Prior sale 33,630 shares sold on <date>05/19/2026</date> for $5,629,843.60 (excerpt shows dollar figure)

Prior sale 4,000 shares sold on <date>06/05/2026</date> for $800,280.00 (excerpt shows dollar figure)

Key Terms

Form 144, PSU, broker

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

PSU financial

"COMMON SHARES | 06/12/2026 | PSU | ISSUER"

A PSU is a company where the government owns a controlling stake and often plays a direct role in its management and strategy. Think of it like a business that operates with public oversight, similar to a town-run utility versus a private neighborhood service. Investors watch PSUs differently because government involvement can affect profits, dividend policies, regulatory treatment and stability, so these stocks may behave more like policy instruments than pure market-driven enterprises.

broker market

"CITIGROUP GLOBAL MARKETS 390 GREENWICH ST NEW YORK NY"

A broker is a licensed professional or firm that helps investors buy and sell financial assets by executing trades on their behalf, acting like a marketplace agent or matchmaker between buyers and sellers. Brokers matter to investors because they provide access to markets, handle order execution and paperwork, and can offer research or advice—services that affect trade speed, costs, and the quality of investment decisions.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the AAOI Form 144 filed by Chang Hung-Lun report?

It reports a proposed sale of 34,000 common shares to be effected on 06/12/2026. The filing names Citigroup Global Markets as the broker and lists recent sales in March, May and June 2026.

How many shares did Chang Hung-Lun sell in the past three months for AAOI?

The filing lists prior dispositions of 36,400, 33,630, and 4,000 common shares on 03/16/2026, 05/19/2026, and 06/05/2026 respectively, with corresponding dollar amounts shown in the excerpt.

Who is the broker handling the proposed AAOI sale in this Form 144?

The excerpt names Citigroup Global Markets at 390 Greenwich St, New York, NY as the broker for the reported proposed sale of 34,000 shares on 06/12/2026.

Does filing a Form 144 mean the shares have already been sold?

No. A Form 144 is a notice of a proposed sale under resale rules. It notifies the SEC and identifies planned transactions; actual execution depends on subsequent market trades and broker activity.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/12/2026 - 07:11 AM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001587462
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	APPLIED OPTOELECTRONICS, INC.
SEC File Number	001-36083
Address of Issuer	13139 JESS PIRTLE BLVD SUGAR LAND TEXAS 77478
Phone	281-295-1800
Name of Person for Whose Account the Securities are To Be Sold	Chang Hung-Lun (Fred)
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer
Relationship to Issuer	SENIOR VP NORTH AMERICA GENERAL MANAGER

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
COMMON STOCK	CITIGROUP GLOBAL MARKETS 390 GREENWICH ST NEW YORK NY 10013	34000	5874520.00	80242767	06/12/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
COMMON SHARES	06/12/2026	PSU	ISSUER			34000	06/12/2026	NA

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Chang Hung-Lun (Fred) 13139 JESS PIRTLE BLVD SUGARLAND TX 77478	COMMON SHARES	03/16/2026	36400	3648918.00
Chang Hung-Lun (Fred) 13139 JESS PIRTLE BLVD SUGARLAND TX 77478	COMMON SHARES	05/19/2026	33630	5629843.60
Chang Hung-Lun (Fred) 13139 JESS PIRTLE BLVD JESS SUGARLAND TX 77478	COMMON SHARES	06/05/2026	4000	800280.00

144: Remarks and Signature

Remarks	SECTION 3 D BASED ON JUNE 11 26 CLOSING PRICE OF 172.78
Date of Notice	06/12/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	CONFORMED SIGNATURE ON FILE
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)