APPLIED OPTOELECTRONICS, INC. Insider Trading Activity

APPLIED OPTOELECTRONICS, INC. officer Yeh Shu-Hua (Joshua) reported four compensation-related share dispositions.

Accepted by SEC EDGAR 04/24/2026 - 04:02 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

APPLIED OPTOELECTRONICS, INC. officer Yeh Shu-Hua (Joshua) reported four compensation-related share dispositions. On April 22, 2026, a total of 4,709 shares of common stock were surrendered at $150.57 per share to cover tax-withholding obligations.

Footnotes explain these shares were delivered back to the company upon the vesting of restricted stock unit awards granted on June 26, 2023, April 29, 2024, April 11, 2025, and February 9, 2026. These are tax-withholding transactions, not open-market sales.

Insider Trade Summary

Exercise Price or Tax Liability: 4,709 shares

Exercise Price or Tax Liability 4 txns

Insider Yeh Shu-Hua (Joshua)

Role *** See Remarks

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock, $.001 par value	2,553	$150.57	$384K
Exercise Price or Tax Liability	Common Stock, $.001 par value	609	$150.57	$92K
Exercise Price or Tax Liability	Common Stock, $.001 par value	861	$150.57	$130K
Exercise Price or Tax Liability	Common Stock, $.001 par value	686	$150.57	$103K

Holdings After Transaction: Common Stock, $.001 par value — 317,342 shares (Direct)

Footnotes (4)

1. F1. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023.
2. F2. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024.
3. F3. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025.
4. F4. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.

Key Figures

Tax-withholding shares: 4,709 shares Share valuation: $150.57/share Tax-withholding transactions: 4 transactions

3 metrics

Tax-withholding shares 4,709 shares Common stock surrendered for tax withholding on Apr. 22, 2026

Share valuation $150.57/share Value applied to all tax-withholding dispositions

Tax-withholding transactions 4 transactions All coded F for payment of tax liability

Key Terms

restricted stock unit, tax-withholding obligations, Common Stock, $.001 par value, tax-withholding disposition

4 terms

restricted stock unit financial

"upon the vesting of restricted stock unit award granted on June 26, 2023"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

tax-withholding obligations financial

"shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting"

Common Stock, $.001 par value financial

"security_title: Common Stock, $.001 par value"

tax-withholding disposition financial

"transaction_action: tax-withholding disposition"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

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

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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^*

Yeh Shu-Hua (Joshua)

(Last) (First) (Middle)

C/O APPLIED OPTOELECTRONICS, INC.

13139 JESS PIRTLE BLVD.

(Street)

SUGAR LAND TEXAS 77478

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/22/2026

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

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

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

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	04/22/2026		F		2,553(1)	D	$150.57	319,498	D
Common Stock, $.001 par value	04/22/2026		F		609(2)	D	$150.57	318,889	D
Common Stock, $.001 par value	04/22/2026		F		861(3)	D	$150.57	318,028	D
Common Stock, $.001 par value	04/22/2026		F		686(4)	D	$150.57	317,342	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. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023.

2. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024.

3. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025.

4. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.

Remarks:

Senior Vice President and Asia General Manager.

	/s/ David C. Kuo, attorney in fact for Shu-Hua (Joshua) Yeh	04/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)