SEC Form 4
Applied Optoelectronics, Inc. (AAOI) insider trading
In the 12 months to Oct 26, 2026, 10 AAOI insiders reported open-market sales of $125.6M across 46 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $125.6M
- 46 filings · 10 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 23 of 46
- $22.9M of $125.6M sold (18%)
Who traded AAOI, and when
- Sale
- Sale, pre-arranged (10b5-1)
AAOI daily close from Oct 27, 2025 to Oct 26, 2026, between $19.49 and $223.10, last $74.11. 46 sale and 0 purchase filings by 10 insiders, marked at their filing dates. Hung-Lun (Fred) Chang, *** See Remarks: sold $26.4M across 6 filings, first filed Mar 18, 2026, last Sep 10, 2026. Shu-Hua (Joshua) Yeh, *** See Remarks: sold $21.9M across 9 filings, first filed Mar 10, 2026, last Oct 7, 2026. Chih-Hsiang (Thompson) Lin, President and CEO: sold $19.9M across 2 filings, first filed May 19, 2026, last Jun 16, 2026. Stefan J. Murry, Chief Financial Officer: sold $16.9M across 15 filings, first filed Dec 12, 2025, last Oct 14, 2026. David C. Kuo, *** See Remarks: sold $13.1M across 6 filings, first filed Dec 29, 2025, last Jun 16, 2026. Cynthia DeLaney, Director: sold $12.8M across 2 filings, first filed Mar 5, 2026, last May 28, 2026. 4 others: sold $14.7M across 6 filings, first filed Dec 17, 2025, last Jun 4, 2026.
Largest mark · tap a row for others
Richard B. Black · Director
Filing 1 of 4 within a week · $12,896,905 total
Sale $306,945
3,231 shares at $95.00 avg
Filed Mar 5, 2026
Close on filing date $101.14
Hung-Lun (Fred) Chang · *** See Remarks
*** See Remarks
$26.4M soldShu-Hua (Joshua) Yeh · *** See Remarks
*** See Remarks
$21.9M soldChih-Hsiang (Thompson) Lin · President and CEO
President and CEO
$19.9M soldStefan J. Murry · Chief Financial Officer
Chief Financial Officer
$16.9M soldDavid C. Kuo · *** See Remarks
*** See Remarks
$13.1M soldCynthia DeLaney · Director
Director
$12.8M sold4 others
Combined, one mark per week
$14.7M soldOpen-market trades
46 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Hung-Lun (Fred) Chang | *** See Remarks | $26.4M | — | 6 | 26% of sales | |
| Shu-Hua (Joshua) Yeh | *** See Remarks | $21.9M | — | 9 | 38% of sales | |
| Chih-Hsiang (Thompson) Lin | President and CEO | $19.9M | — | 2 | — | |
| Stefan J. Murry | Chief Financial Officer | $16.9M | — | 15 | 34% of sales | |
| David C. Kuo | *** See Remarks | $13.1M | — | 6 | 16% of sales | |
| Cynthia DeLaney | Director | $12.8M | — | 2 | — | |
| Elizabeth G. Loboa | Director | $9.9M | — | 2 | — | |
| Min-Chu (Mike) Chen | Director | $2.9M | — | 2 | — | |
| William H. Yeh | Director | $1.6M | — | 1 | — | |
| Richard B. Black | Director | $306.9K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 4,000 | $102.87 | $411.5K | 363,168 | |
traded | Shu-Hua (Joshua) Yeh *** See Remarks | SalePre-arranged (10b5-1) | 6,000 | $120.03 | $720.2K | 371,498 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 4,000 | $105.33 | $421.3K | 367,168 | |
traded | Hung-Lun (Fred) Chang *** See Remarks | Sale | 32,172 | $110.21 | $3.5M | 249,276 | |
traded | Shu-Hua (Joshua) Yeh *** See Remarks | SalePre-arranged (10b5-1) | 6,000 | $147.73 | $886.4K | 377,498 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 4,000 | $144.79 | $579.2K | 371,168 | |
traded | Shu-Hua (Joshua) Yeh *** See Remarks | SalePre-arranged (10b5-1) | 4,715 | $126.50 | $596.4K | 383,498 | |
traded | Shu-Hua (Joshua) Yeh *** See Remarks | SalePre-arranged (10b5-1) | 1,285 | $120.02 | $154.2K | 392,922 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 4,000 | $122.09 | $488.4K | 380,576 | |
traded | Shu-Hua (Joshua) Yeh *** See Remarks | SalePre-arranged (10b5-1) | 6,000 | $171.89 | $1.0M | 394,207 | |
traded | Hung-Lun (Fred) Chang *** See Remarks | SalePre-arranged (10b5-1) | 40,329 | $170.60 | $6.9M | 286,124 | |
traded | Hung-Lun (Fred) Chang *** See Remarks | Sale | 34,000 | $166.53 | $5.7M | 326,453 | |
traded | David C. Kuo *** See Remarks | Sale | 29,227 | $166.53 | $4.9M | 149,078 | |
traded | Chih-Hsiang (Thompson) Lin President and CEO | Sale | 59,000 | $166.53 | $9.8M | 1,302,436 | |
traded | Stefan J. Murry Chief Financial Officer | Sale | 33,000 | $166.53 | $5.5M | 384,576 | |
traded | Shu-Hua (Joshua) Yeh *** See Remarks | Sale | 28,826 | $166.53 | $4.8M | 400,207 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 4,000 | $171.45 | $685.8K | 447,906 | |
traded | Shu-Hua (Joshua) Yeh *** See Remarks | Sale | 10,000 | $205.07 | $2.1M | 457,430 | |
traded | Hung-Lun (Fred) Chang *** See Remarks | Sale | 4,000 | $200.07 | $800.3K | 387,750 | |
traded | Min-Chu (Mike) Chen Director | Sale | 8,247 | $201.00 | $1.7M | 161,053 | |
traded | Cynthia DeLaney Director | Sale | 56,575 | $189.23 | $10.7M | 59,647 | |
traded | Hung-Lun (Fred) Chang *** See Remarks | Sale | 33,630 | $173.26 | $5.8M | 391,750 | |
traded | David C. Kuo *** See Remarks | Sale | 19,227 | $173.26 | $3.3M | 197,370 | |
traded | Chih-Hsiang (Thompson) Lin President and CEO | Sale | 58,000 | $173.26 | $10.0M | 2,255,693 | |
traded | Stefan J. Murry Chief Financial Officer | Sale | 33,000 | $173.26 | $5.7M | 451,906 | |
traded | Shu-Hua (Joshua) Yeh *** See Remarks | Sale | 39,154 | $173.26 | $6.8M | 462,430 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 4,000 | $159.53 | $638.1K | 266,126 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 4,000 | $136.50 | $546.0K | 276,070 | |
traded | David C. Kuo *** See Remarks | Sale | 29,000 | $100.13 | $2.9M | 82,663 | |
traded | Hung-Lun (Fred) Chang *** See Remarks | Sale | 36,400 | $100.25 | $3.6M | 233,618 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 4,000 | $112.76 | $451.0K | 280,070 | |
traded | William H. Yeh Director | Sale | 15,000 | $105.76 | $1.6M | 238,819 | |
traded | Shu-Hua (Joshua) Yeh *** See Remarks | SalePre-arranged (10b5-1) | 50,000 | $97.10 | $4.9M | 322,051 | |
traded | Min-Chu (Mike) Chen Director | Sale | 11,335 | $106.13 | $1.2M | Multiple accounts | |
traded | Richard B. Black Director | Sale | 3,231 | $95.00 | $306.9K | 164,363 | |
traded | Cynthia DeLaney Director | Sale | 21,000 | $98.02 | $2.1M | 116,222 | |
traded | Elizabeth G. Loboa Director | Sale | 102,347 | $95.76 | $9.8M | 20,523 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 5,980 | $50.15 | $299.9K | 284,070 | |
traded | David C. Kuo *** See Remarks | SalePre-arranged (10b5-1) | 20,000 | $50.15 | $1.0M | 111,663 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 18,020 | $49.87 | $898.7K | 290,050 | |
traded | David C. Kuo *** See Remarks | SalePre-arranged (10b5-1) | 12,000 | $45.06 | $540.7K | 114,636 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 66 | $35.01 | $2.3K | 282,971 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 3,934 | $34.04 | $133.9K | 283,037 | |
traded | David C. Kuo *** See Remarks | SalePre-arranged (10b5-1) | 12,500 | $40.15 | $501.9K | 130,948 | |
traded | Elizabeth G. Loboa Director | Sale | 4,121 | $30.23 | $124.6K | 122,870 | |
traded | Stefan J. Murry Chief Financial Officer | SalePre-arranged (10b5-1) | 4,000 | $31.55 | $126.2K | 288,971 |
GET /stocks/filings/vX/form-4?tickers=AAOI&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"AAOI"
],
"issuer_cik": "0001158114",
"owner_cik": "0001587599",
"accession_number": "0001683168-26-007844",
"form_type": "4",
"filing_date": "2026-10-14",
"period_of_report": "2026-10-12",
"issuer_name": "APPLIED OPTOELECTRONICS, INC.",
"issuer_trading_symbol": "AAOI",
"owner_name": "Murry Stefan J.",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Financial Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock, $.001 par value",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-12",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 4000,
"transaction_price_per_share": 102.87,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 363168,
"transaction_value": 411480,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 12, 2025. The shares were sold in multiple transactions at actual sale prices ranging from $102.00 to $105.14 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold during each transaction."
}
]
},
{
"tickers": [
"AAOI"
],
"issuer_cik": "0001158114",
"owner_cik": "0001587600",
"accession_number": "0001683168-26-007698",
"form_type": "4",
"filing_date": "2026-10-07",
"period_of_report": "2026-10-05",
"issuer_name": "APPLIED OPTOELECTRONICS, INC.",
"issuer_trading_symbol": "AAOI",
"owner_name": "Yeh Shu-Hua (Joshua)",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "*** See Remarks",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock, $.001 par value",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-05",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 6000,
"transaction_price_per_share": 120.03,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 371498,
"transaction_value": 720180,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 19, 2026. The shares were sold in multiple transactions at actual sale prices ranging from $120.00 to $120.10 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold during each transaction."
}
],
"remarks": "Senior Vice President and Asia General Manager."
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 95 records
- Tax withholding70 records
- Grants and awards17 records
- Gifts6 records
- Other2 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Applied Optoelectronics, Inc.'s CEO sold stock?
Yes. Chih-Hsiang (Thompson) Lin (CEO) sold 117,000 shares ($19.9M) between May 2026 and Jun 2026.
How current is AAOI’s insider data?
These are AAOI Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for AAOI every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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