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 $50.4M · 18net −$50.4M
$10k$10k$1M$1M$100M$100MbuyssalesSep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026

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
Jun 18, 2026 SForm 4 →Jun 18, 4:49 pm EDTShu-Hua (Joshua) Yeh*** See Remarks6,000$171.89$1,031,340394,207−1.50%10b5-1
Jun 17, 2026 SForm 4 →Jun 18, 4:52 pm EDTHung-Lun (Fred) Chang*** See Remarks40,329$170.60$6,880,127286,124−12.4%10b5-1
Jun 12, 2026 SForm 4 →Jun 16, 4:52 pm EDTShu-Hua (Joshua) Yeh*** See Remarks28,826$166.53$4,800,394400,207−6.72%
Jun 12, 2026 FForm 4 →Jun 16, 4:52 pm EDTShu-Hua (Joshua) Yeh*** See Remarks23,397$172.78$4,042,534429,033—
Jun 12, 2026 SForm 4 →Jun 16, 4:51 pm EDTStefan J. MurryChief Financial Officer33,000$166.53$5,495,490384,576−7.90%
Jun 12, 2026 FForm 4 →Jun 16, 4:51 pm EDTStefan J. MurryChief Financial Officer30,330$172.78$5,240,417417,576—
Jun 12, 2026 SForm 4 →Jun 16, 4:51 pm EDTChih-Hsiang (Thompson) LinPresident and CEO, Director59,000$166.53$9,825,2701,302,436−4.33%
Jun 12, 2026 FForm 4 →Jun 16, 4:51 pm EDTChih-Hsiang (Thompson) LinPresident and CEO, Director86,655$172.78$14,972,2511,361,436—
Jun 12, 2026 SForm 4 →Jun 16, 4:51 pm EDTDavid C Kuo*** See Remarks29,227$166.53$4,867,172149,078−16.4%
Jun 12, 2026 FForm 4 →Jun 16, 4:51 pm EDTDavid C Kuo*** See Remarks19,065$172.78$3,294,051178,305—
Jun 12, 2026 SForm 4 →Jun 16, 4:51 pm EDTHung-Lun (Fred) Chang*** See Remarks34,000$166.53$5,662,020326,453−9.43%
Jun 12, 2026 FForm 4 →Jun 16, 4:51 pm EDTHung-Lun (Fred) Chang*** See Remarks27,297$172.78$4,716,376360,453—
Jun 10, 2026 SForm 4 →Jun 11, 5:27 pm EDTStefan J. MurryChief Financial Officer4,000$171.45$685,800447,906−0.89%10b5-1
Jun 9, 2026 AForm 4 →Jun 11, 5:27 pm EDTWilliam H YehDirector1,166——239,985—
Jun 9, 2026 AForm 4 →Jun 11, 5:27 pm EDTChe-Wei LinDirector1,166——254,672—
Jun 9, 2026 AForm 4 →Jun 11, 5:26 pm EDTRobert James FlanaganDirector1,166——1,166—
Jun 9, 2026 AForm 4 →Jun 11, 5:26 pm EDTCynthia DeLaneyDirector1,166——60,813—
Jun 9, 2026 AForm 4 →Jun 11, 5:26 pm EDTMin-Chu (Mike) ChenDirector1,166——162,219—
Jun 9, 2026 AForm 4 →Jun 11, 5:25 pm EDTRichard B BlackDirector1,166——165,529—
Jun 5, 2026 SForm 4 →Jun 8, 5:14 pm EDTHung-Lun (Fred) Chang*** See Remarks4,000$200.07$800,280387,750−1.02%
Jun 4, 2026 SForm 4 →Jun 8, 5:13 pm EDTShu-Hua (Joshua) Yeh*** See Remarks10,000$205.07$2,050,700452,430−2.16%
Jun 2, 2026 SForm 4 →Jun 4, 4:12 pm EDTMin-Chu (Mike) ChenDirector8,247$201.00$1,657,647161,053−4.87%

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

No reported derivative activity in this period.