As of the latest Form 4 filed Jun 18, 2026.
What Applied Opt insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 75 most recent filings for AAOI.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-06-18 | 2026-06-18 | Yeh Shu-Hua (Joshua) *** See Remarks | SSale | −6.00K | $171.89 | $1.03M | Yes (planned) | Form 4 ↗ |
| 2026-06-18 | 2026-06-17 | Chang Hung-Lun (Fred) *** See Remarks | SSale | −40.3K | $170.60 | $6.88M | Yes (planned) | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Yeh Shu-Hua (Joshua) *** See Remarks | SSale | −28.8K | $166.53 | $4.80M | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Yeh Shu-Hua (Joshua), *** See Remarks | FTax | −23.4K | $172.78 | $4.04M | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Murry Stefan J. Chief Financial Officer | SSale | −33.0K | $166.53 | $5.50M | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Murry Stefan J., Chief Financial Officer | FTax | −30.3K | $172.78 | $5.24M | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Lin Chih-Hsiang (Thompson) President and CEO | SSale | −59.0K | $166.53 | $9.83M | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Lin Chih-Hsiang (Thompson), President and CEO | FTax | −86.7K | $172.78 | $15.0M | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Kuo David C *** See Remarks | SSale | −29.2K | $166.53 | $4.87M | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Kuo David C, *** See Remarks | FTax | −19.1K | $172.78 | $3.29M | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Chang Hung-Lun (Fred) *** See Remarks | SSale | −34.0K | $166.53 | $5.66M | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Chang Hung-Lun (Fred), *** See Remarks | FTax | −27.3K | $172.78 | $4.72M | No | Form 4 ↗ |
| 2026-06-11 | 2026-06-10 | Murry Stefan J. Chief Financial Officer | SSale | −4.00K | $171.45 | $686K | Yes (planned) | Form 4 ↗ |
| 2026-06-11 | 2026-06-09 | Yeh William H Director | AAward | +1.17K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-11 | 2026-06-09 | Lin Che-Wei Director | AAward | +1.17K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-11 | 2026-06-09 | Flanagan Robert James Director | AAward | +1.17K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-11 | 2026-06-09 | DeLaney Cynthia Director | AAward | +1.17K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-11 | 2026-06-09 | Chen Min-Chu (Mike) Director | AAward | +1.17K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-11 | 2026-06-09 | BLACK RICHARD B Director | AAward | +1.17K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-08 | 2026-06-05 | Chang Hung-Lun (Fred) *** See Remarks | SSale | −4.00K | $200.07 | $800K | No | Form 4 ↗ |
| 2026-06-08 | 2026-06-04 | Yeh Shu-Hua (Joshua) *** See Remarks | SSale | −5.00K | $205.39 | $1.03M | No | Form 4 ↗ |
| 2026-06-08 | 2026-06-04 | Yeh Shu-Hua (Joshua), *** See Remarks | SSale | −5.00K | $204.75 | $1.02M | No | Form 4 ↗ |
| 2026-06-04 | 2026-06-02 | Chen Min-Chu (Mike) Director | SSale | −8.25K | $201.00 | $1.66M | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | Lin Chih-Hsiang (Thompson) President and CEO | JOther | +722K | — | — | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | Lin Chih-Hsiang (Thompson), President and CEO | JOther | −722K | — | — | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | Lin Chih-Hsiang (Thompson), President and CEO | GGift | +85.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | Lin Chih-Hsiang (Thompson), President and CEO | GGift | −85.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-28 | 2026-05-26 | DeLaney Cynthia Director | SSale | −56.6K | $189.23 | $10.7M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Yeh Shu-Hua (Joshua) *** See Remarks | SSale | −39.2K | $173.26 | $6.78M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Yeh Shu-Hua (Joshua), *** See Remarks | FTax | −7.93K | $190.36 | $1.51M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Murry Stefan J. Chief Financial Officer | SSale | −33.0K | $173.26 | $5.72M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Murry Stefan J., Chief Financial Officer | FTax | −30.3K | $190.36 | $5.77M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Lin Chih-Hsiang (Thompson) President and CEO | SSale | −58.0K | $173.26 | $10.0M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Lin Chih-Hsiang (Thompson), President and CEO | FTax | −86.7K | $190.36 | $16.5M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Kuo David C *** See Remarks | SSale | −19.2K | $173.26 | $3.33M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Kuo David C, *** See Remarks | FTax | −19.1K | $190.36 | $3.63M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Chang Hung-Lun (Fred) *** See Remarks | SSale | −33.6K | $173.26 | $5.83M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Chang Hung-Lun (Fred), *** See Remarks | FTax | −27.3K | $190.36 | $5.20M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-15 | Yeh Shu-Hua (Joshua) *** See Remarks | AAward | +192K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-15 | Murry Stefan J. Chief Financial Officer | AAward | +249K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-15 | Lin Chih-Hsiang (Thompson) President and CEO | AAward | +712K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-15 | Kuo David C *** See Remarks | AAward | +157K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-15 | Chang Hung-Lun (Fred) *** See Remarks | AAward | +224K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Murry Stefan J. Chief Financial Officer | SSale | −4.00K | $159.53 | $638K | Yes (planned) | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Lin Chih-Hsiang (Thompson) President and CEO | FTax | −2.17K | $150.57 | $326K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Lin Chih-Hsiang (Thompson), President and CEO | FTax | −2.69K | $150.57 | $405K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Lin Chih-Hsiang (Thompson), President and CEO | FTax | −2.49K | $150.57 | $374K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Lin Chih-Hsiang (Thompson), President and CEO | FTax | −9.33K | $150.57 | $1.40M | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Chang Hung-Lun (Fred) *** See Remarks | FTax | −677.00 | $150.57 | $102K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Chang Hung-Lun (Fred), *** See Remarks | FTax | −850.00 | $150.57 | $128K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Chang Hung-Lun (Fred), *** See Remarks | FTax | −673.00 | $150.57 | $101K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Chang Hung-Lun (Fred), *** See Remarks | FTax | −2.94K | $150.57 | $443K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Murry Stefan J. Chief Financial Officer | FTax | −846.00 | $150.57 | $127K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Murry Stefan J., Chief Financial Officer | FTax | −1.09K | $150.57 | $164K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Murry Stefan J., Chief Financial Officer | FTax | −746.00 | $150.57 | $112K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Murry Stefan J., Chief Financial Officer | FTax | −3.27K | $150.57 | $492K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Yeh Shu-Hua (Joshua) *** See Remarks | FTax | −686.00 | $150.57 | $103K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Yeh Shu-Hua (Joshua), *** See Remarks | FTax | −861.00 | $150.57 | $130K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Yeh Shu-Hua (Joshua), *** See Remarks | FTax | −609.00 | $150.57 | $91.7K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Yeh Shu-Hua (Joshua), *** See Remarks | FTax | −2.55K | $150.57 | $384K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Kuo David C *** See Remarks | FTax | −447.00 | $150.57 | $67.3K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Kuo David C, *** See Remarks | FTax | −567.00 | $150.57 | $85.4K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Kuo David C, *** See Remarks | FTax | −518.00 | $150.57 | $78.0K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-22 | Kuo David C, *** See Remarks | FTax | −2.05K | $150.57 | $309K | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-10 | Murry Stefan J. Chief Financial Officer | SSale | −4.00K | $136.50 | $546K | Yes (planned) | Form 4 ↗ |
| 2026-03-23 | 2026-03-19 | Kuo David C *** See Remarks | SSale | −29.0K | $100.13 | $2.90M | No | Form 4 ↗ |
| 2026-03-18 | 2026-03-16 | Chang Hung-Lun (Fred) *** See Remarks | SSale | −36.4K | $100.25 | $3.65M | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-10 | Murry Stefan J. Chief Financial Officer | SSale | −4.00K | $112.76 | $451K | Yes (planned) | Form 4 ↗ |
| 2026-03-10 | 2026-03-09 | Chen Min-Chu (Mike) Director | SSale | −8.84K | $108.72 | $961K | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-09 | Yeh Shu-Hua (Joshua) *** See Remarks | SSale | −50.0K | $97.10 | $4.85M | Yes (planned) | Form 4 ↗ |
| 2026-03-10 | 2026-03-09 | Yeh William H Director | SSale | −15.0K | $105.76 | $1.59M | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-06 | Chen Min-Chu (Mike) Director | SSale | −2.50K | $97.00 | $243K | No | Form 4 ↗ |
| 2026-03-05 | 2026-03-05 | BLACK RICHARD B Director | SSale | −3.23K | $95.00 | $307K | No | Form 4 ↗ |
| 2026-03-05 | 2026-03-04 | DeLaney Cynthia Director | SSale | −21.0K | $98.02 | $2.06M | No | Form 4 ↗ |
| 2026-03-05 | 2026-03-03 | Loboa Elizabeth G Director | SSale | −102K | $95.76 | $9.80M | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also AAOI’s full analysis or the market-wide insider trading feed. The tabs above jump to AAOI’s other SEC data.
Source: SEC Form 4 filings for AAOI, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.