Notice of Proposed Sale · 144

Applied Optoelectronics, Inc.

AAOINASDAQEQUITYCurrent

Notice of Proposed Sale

Filed Aug 18, 2026Accepted Aug 18, 2026, 4:29 PM EDTFiling CIK 1158114Accession 0001974078-26-000313

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer: APPLIED OPTOELECTRONICS, INC.
Issuer CIK: 0001158114
SEC file number: 001-36083
Phone: 281-295-1800
Person for whose account securities are to be sold: Yeh Shu-Hua (Joshua)
Relationships to issuer: Officer
Street: 13139 JESS PIRTLE BLVD
City: SUGAR LAND
State / country code: TX
Postal code: 77478

Securities proposed for sale

Securities proposed for sale · 1 reported row
Security	Proposed units	Aggregate market value	Units outstanding	Approximate sale date	Exchange	Broker / market maker
Common	6,000	886,396.20	84,569,237	08/18/2026	Nasdaq	Raymond James and Associates Inc.

Broker / market maker — proposed row 1, entry 1

Name: Raymond James and Associates Inc.
Street: 880 Carillon Parkway
City: St. Petersburg
State / country code: FL
Postal code: 33716

Acquisition of securities to be sold

Acquisition of securities to be sold · 2 reported rows
Security	Acquired	Nature of acquisition	Acquired from	Amount acquired	Gift transaction	Payment date	Nature of payment
Common	04/24/2023	RSU	iSSUER	1,368	N	04/24/2023	NA
Common	07/25/2023	RSU	Issuer	4,632	N	07/25/2023	NA

Sales reported in the preceding three months

Sales reported in the preceding three months · 4 reported rows
Seller	Security	Sale date	Amount sold	Gross proceeds
Shu-Hua Yeh	Common	06/06/2026	10,000	2,050,770.00
Shu-Hua Yeh	Common	06/18/2026	6,000	1,031,280.00
Shu-Hua Yeh	Common	07/21/2026	1,285	154,238.00
Shu-Hua Yeh	Common	08/04/2026	4,715	596,430.00

Seller — prior-sale row 1, entry 1

Name: Shu-Hua Yeh
Street: 4F No 111 Ln 20 Src 2 Zhiyu Rd
City: Tapei City
State / country code: F5
Postal code: 111

Seller — prior-sale row 2, entry 1

Name: Shu-Hua Yeh
Street: 4F No 111 Ln 20 Src 2 Zhiyu Rd
City: Tapei City,
State / country code: F5
Postal code: 111

Seller — prior-sale row 3, entry 1

Name: Shu-Hua Yeh
Street: 4F No 111 Ln 20 Src 2 Zhiyu Rd,
City: Tapei City,
State / country code: F5
Postal code: 111

Seller — prior-sale row 4, entry 1

Name: Shu-Hua Yeh
Street: 4F No 111 Ln 20 Src 2 Zhiyu Rd
City: Tapei City
State / country code: F5
Postal code: 111

Prior-sale reporting

Nothing to report for the preceding three months: N

Notice signature

Notice date: 08/18/2026
Signed: Rashida Mitchell, as duly authorized representative of Raymond James & Associates, Inc., as attorney-in-fact for Shu-Hua Yeh
Plan adoption dates: 03/19/2026

Company context

Applied Optoelectronics, Inc. (AOI) is a leading developer and manufacturer of advanced optical and Hybrid Fiber-Coax (HFC) networking products that are the building blocks for AI datacenters, CATV and broadband fiber access networks around the world. AOI supplies this critical infrastructure to tier-one customers across cloud computing, CATV broadband, telecom, and FTTH markets. The company has R&D facilities in Atlanta, GA, and engineering and manufacturing facilities at its corporate headquarters in Sugar Land, TX, as well as in Taipei, Taiwan and Ningbo, China. For additional information, visit www.ao-inc.com. # # #

Current securities

AAOINASDAQ · EQUITY · Current

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