Form4insider filings, from the source

Company · CIK 0001158114 · SIC 3674 — Semiconductors & Related Devices · Nasdaq

APPLIED OPTOELECTRONICS, INC. · AAOI

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $6.7M · 7net −$6.7M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 12Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 15, 2026 GForm 4 →Sep 17, 4:08 pm EDTRichard B BlackDirector2,200——159,092—
Sep 10, 2026 SForm 4 →Sep 10, 4:27 pm EDTStefan J. MurryChief Financial Officer4,000$105.33$421,320367,168−1.08%10b5-1
Sep 8, 2026 SForm 4 →Sep 10, 4:27 pm EDTHung-Lun (Fred) Chang*** See Remarks32,172$110.21$3,545,676249,276−11.4%
Aug 18, 2026 SForm 4 →Aug 20, 4:16 pm EDTShu-Hua (Joshua) Yeh*** See Remarks6,000$147.73$886,380377,498−1.56%10b5-1
Aug 10, 2026 SForm 4 →Aug 12, 4:05 pm EDTStefan J. MurryChief Financial Officer4,000$144.79$579,160371,168−1.07%10b5-1
Aug 4, 2026 SForm 4 →Aug 4, 5:05 pm EDTShu-Hua (Joshua) Yeh*** See Remarks4,715$126.50$596,448383,498−1.21%10b5-1
Jul 31, 2026 AForm 4 →Aug 4, 5:05 pm EDTChih-Hsiang (Thompson) LinPresident and CEO, Director9,251——1,296,047—
Jul 22, 2026 FForm 4 →Jul 23, 5:12 pm EDTDavid C Kuo*** See Remarks3,264$119.26$389,265145,814—
Jul 22, 2026 FForm 4 →Jul 23, 5:12 pm EDTStefan J. MurryChief Financial Officer5,408$119.26$644,958375,168—
Jul 22, 2026 FForm 4 →Jul 23, 5:11 pm EDTHung-Lun (Fred) Chang*** See Remarks4,676$119.26$557,660281,448—
Jul 22, 2026 FForm 4 →Jul 23, 5:11 pm EDTChih-Hsiang (Thompson) LinPresident and CEO, Director15,640$119.26$1,865,2261,286,796—
Jul 22, 2026 FForm 4 →Jul 23, 5:11 pm EDTShu-Hua (Joshua) Yeh*** See Remarks4,709$119.26$561,595388,213—10b5-1
Jul 21, 2026 SForm 4 →Jul 23, 5:11 pm EDTShu-Hua (Joshua) Yeh*** See Remarks1,285$120.02$154,226392,922−0.33%10b5-1
Jul 10, 2026 SForm 4 →Jul 14, 5:01 pm EDTStefan J. MurryChief Financial Officer4,000$122.09$488,360380,576−1.04%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.