Applied Optoelectronics insider buys 4,609 shares; filing details

Rhea-AI Filing Summary

Applied Optoelectronics, Inc. (AAOI) director Che-Wei Lin purchased 4,609 shares of the company on 08/14/2025 at a weighted average price of $21.64 per share. After the reported purchases the reporting person beneficially owned 253,506 shares. The Form 4 was filed individually and executed by an attorney-in-fact on 08/15/2025. The explanation states the shares were purchased in multiple transactions on the same date at prices ranging from $21.41 to $22.09 and that the weighted average price is reported; the filer offers to provide a breakdown of quantities at each price upon request.

Positive

• Insider purchase disclosed: Director Che-Wei Lin acquired 4,609 shares on 08/14/2025, increasing reported beneficial ownership to 253,506 shares
• Transparent pricing disclosure: Filing reports weighted average price $21.64 and states per-trade price range $21.41–$22.09 with offer to provide per-trade details on request

Negative

• None.

Insights

Financial Analyst

TL;DR: A routine director purchase totaling 4,609 shares at a $21.64 weighted average; modest insider buying, not clearly material.

From a market-impact perspective, the Form 4 documents a modest open-market purchase by a director rather than a large concentrated acquisition or option exercise. The filing shows the director increased direct holdings to 253,506 shares. The transaction price range ($21.41–$22.09) and weighted average are disclosed; further granularity is available on request. This disclosure is consistent with routine Section 16 reporting and provides transparency on insider activity.

Corporate Governance Expert

TL;DR: Compliance appears proper; a director used an attorney-in-fact to file the Form 4 after same-day purchases.

The filing indicates timely disclosure and identifies the reporting person as a director. The signature by an attorney-in-fact and the offered explanation about multiple trade prices align with required Form 4 disclosures. There is no indication in the document of a Rule 10b5-1 plan or other arrangement, and no amendments are shown. As presented, this is a routine insider transaction disclosure with appropriate explanatory language.

Insider Trade Summary

Net Buyer: 4,609 shares ($99,739)

Net Buy 1 txn

Insider Lin Che-Wei

Role Director

Bought 4,609 shs ($100K)

Type	Security	Shares	Price	Value
Purchase	Common Stock, $.001 par value	4,609	$21.64	$100K

Holdings After Transaction: Common Stock, $.001 par value — 253,506 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Lin Che-Wei

(Last) (First) (Middle)

C/O APPLIED OPTOELECTRONICS, INC.

13139 JESS PIRTLE BLVD.

(Street)

SUGAR LAND TX 77478

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
APPLIED OPTOELECTRONICS, INC. [ AAOI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/14/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, $.001 par value	08/14/2025		P		4,609(1)	A	$21.64	253,506	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. These shares were purchased in multiple transactions on August 14, 2025 at prices ranging from $21.41 to $22.09 per share. The price reported reflects the weighted average purchase prices for the transactions. The reporting person undertakes to provide, upon request by SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price.

	/s/ David C. Kuo, attorney in fact for Che-Wei Lin	08/15/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did AAOI director Che-Wei Lin purchase on 08/14/2025?

The director purchased 4,609 shares of Applied Optoelectronics, Inc. common stock on 08/14/2025.

At what price did the AAOI insider purchases occur?

The purchases were at prices ranging from $21.41 to $22.09 per share, with a reported weighted average price of $21.64.

How many AAOI shares does the reporting person own after the transaction?

Following the reported transactions the reporting person beneficially owned 253,506 shares.

Was the Form 4 filed jointly or by one person for AAOI?

The Form 4 was filed by one reporting person and signed by an attorney-in-fact on behalf of Che-Wei Lin.

Does the Form 4 indicate the trades were part of a 10b5-1 plan?

No. The filing does not indicate the transactions were executed pursuant to a Rule 10b5-1 plan.