APPLIED OPTOELECTRONICS, INC. (AAOI)

Data as of Oct 26, 2026, from SEC Form 4 filings.

Net insider selling (90d)Watch AAOI

See up to 3 months of AAOI. The 7-day demo opens the 1M and 3M ranges and puts AAOI on your watchlist.

Latest AAOI insider trades

Stefan J. Murry - Officer
Open-market sale$411K
Oct 12, 2026

About APPLIED OPTOELECTRONICS, INC. (AAOI)

APPLIED OPTOELECTRONICS, INC. is an SEC registrant, filing under CIK 0001158114, classified as semiconductors and related devices. It is grouped with Information Technology companies on this site.

Sector: Information Technology

SEC filings for AAOI on EDGAR

AAOI Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Open-market sale	6	56,172	$6.56M
Tax withholding / forfeiture	20	33,563
Bona-fide gift	1	2,200

Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.

AAOI insider transactions (Form 4)

147 Form 4 filings on record, the earliest from Oct 24, 2024, newest first. Filing history page 2 of 3.

Traded	Insider	Transaction	Security	Shares	Price	Value
Jun 9, 2026	Robert James Flanagan - Director	Grant or award	Common Stock, $.001 par value	1,166^{footnote F1}	$0.00	-
Footnote F1 (shares): These shares are granted in the form of Restricted Stock Units (RSUs) under the Company's 2026 Equity Incentive Plan. The grant vests as to 1/12th of the total number of shares on the same day every month starting on July 5, 2026, until all shares have vested.
Jun 9, 2026	Cynthia Delaney - Director	Grant or award	Common Stock, $.001 par value	1,166^{footnote F1}	$0.00	-
Footnote F1 (shares): These shares are granted in the form of Restricted Stock Units (RSUs) under the Company's 2026 Equity Incentive Plan. The grant vests as to 1/12th of the total number of shares on the same day every month starting on July 5, 2026, until all shares have vested.
Jun 9, 2026	Min-Chu (Mike) Chen - Director	Grant or award	Common Stock, $.001 par value	1,166^{footnote F1}	$0.00	-
Footnote F1 (shares): These shares are granted in the form of Restricted Stock Units (RSUs) under the Company's 2026 Equity Incentive Plan. The grant vests as to 1/12th of the total number of shares on the same day every month starting on July 5, 2026, until all shares have vested.
Jun 9, 2026	Richard B. Black - Director	Grant or award	Common Stock, $.001 par value	1,166^{footnote F1}	$0.00	-
Footnote F1 (shares): These shares are granted in the form of Restricted Stock Units (RSUs) under the Company's 2026 Equity Incentive Plan. The grant vests as to 1/12th of the total number of shares on the same day every month starting on July 5, 2026, until all shares have vested.
Jun 5, 2026	Hung-Lun (Fred) Chang - Officer	Open-market sale	Common Stock, $.001 par value	4,000^{footnote F1}	$200.07	$800K
Footnote F1 (shares): The shares were sold in multiple transactions on June 5, 2026 at actual sale prices ranging from $200.00 to $200.37 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… Full note on SEC EDGAR
Jun 4, 2026	Shu-Hua (Joshua) Yeh - Officer	Open-market sale	Common Stock, $.001 par value	5,000^{footnote F1}	$204.75	$1.02M
Jun 4, 2026	Shu-Hua (Joshua) Yeh - Officer	Open-market sale	Common Stock, $.001 par value	5,000^{footnote F2}	$205.39	$1.03M
Footnote F1 (shares): The shares were sold in multiple transactions on June 4, 2026 at actual sale prices ranging from $203.93 to $205.50 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… Full note on SEC EDGAR Footnote F2 (shares): The shares were sold in multiple transactions on June 4, 2026 at actual sale prices ranging from $205.00 to $206.00 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… Full note on SEC EDGAR
Jun 2, 2026	Min-Chu (Mike) Chen - Director	Open-market sale	Common Stock, $.001 par value	8,247	$201.00	$1.66M
May 28, 2026	Chih-Hsiang (Thompson) Lin - Officer	Gift	Common Stock, $.001 par value	85,790	$0.00^{footnote F2}	-
May 28, 2026	Chih-Hsiang (Thompson) Lin - Officer	Gift	Common Stock, $.001 par value	85,790	$0.00^{footnote F2}	-
May 28, 2026	Chih-Hsiang (Thompson) Lin - Officer	Other	Common Stock, $.001 par value	721,812	-^{footnote F3}	-
May 28, 2026	Chih-Hsiang (Thompson) Lin - Officer	Other	Common Stock, $.001 par value	721,812	-^{footnote F3}	-
Footnote F2 (price): The reported transaction reflects the gift of a portion of the reporting person's membership interest in the LLC, valued at $15 million, as determined by utilizing the average of the high and low per share trading price on the date of the gift (the per share price on the date of… Full note on SEC EDGAR Footnote F3 (price): The reported transaction reflects the transfer of a certain portion of the reporting person's membership interest in the LLC from the reporting person to the Family Trust, in exchange for a promissory note in the principal amount of $126,205,171.69, representing the fair market… Full note on SEC EDGAR
May 26, 2026	Cynthia Delaney - Director	Open-market sale	Common Stock, $.001 par value	56,575^{footnote F1}	$189.23	$10.71M
Footnote F1 (shares): The shares were sold in multiple transactions on May 26, 2026 at actual sale prices ranging from $185.00 to $194.78 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… Full note on SEC EDGAR
May 19, 2026	Shu-Hua (Joshua) Yeh - Officer	Open-market sale	Common Stock, $.001 par value	39,154	$173.26	$6.78M
May 15, 2026	Shu-Hua (Joshua) Yeh - Officer	Grant or award	Common Stock, $.001 par value	192,170^{footnote F1}	$0.00	-
May 19, 2026	Shu-Hua (Joshua) Yeh - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	7,928^{footnote F2}	$190.36	$1.51M
Footnote F1 (shares): Consists of shares earned in settlement of performance vesting restricted stock units for the 2023-2026 performance period that were earned and settled with respect to maximum performance. Footnote F2 (shares): Consists of shares withheld to satisfy applicable tax withholding obligations.
May 19, 2026	Stefan J. Murry - Officer	Open-market sale	Common Stock, $.001 par value	33,000	$173.26	$5.72M
May 15, 2026	Stefan J. Murry - Officer	Grant or award	Common Stock, $.001 par value	249,110^{footnote F1}	$0.00	-
May 19, 2026	Stefan J. Murry - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	30,330^{footnote F2}	$190.36	$5.77M
Footnote F1 (shares): Consists of shares earned in settlement of performance vesting restricted stock units for the 2023-2026 performance period that were earned and settled with respect to maximum performance. Footnote F2 (shares): Consists of shares withheld to satisfy applicable tax withholding obligations.
May 19, 2026	Chih-Hsiang (Thompson) Lin - Officer	Open-market sale	Common Stock, $.001 par value	58,000	$173.26	$10.05M
May 15, 2026	Chih-Hsiang (Thompson) Lin - Officer	Grant or award	Common Stock, $.001 par value	711,743^{footnote F1}	$0.00	-
May 19, 2026	Chih-Hsiang (Thompson) Lin - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	86,655^{footnote F2}	$190.36	$16.50M
Footnote F1 (shares): Consists of shares earned in settlement of performance vesting restricted stock units for the 2023-2026 performance period that were earned and settled with respect to maximum performance. Footnote F2 (shares): Consists of shares withheld to satisfy applicable tax withholding obligations.
May 19, 2026	David C. Kuo - Officer	Open-market sale	Common Stock, $.001 par value	19,227	$173.26	$3.33M
May 15, 2026	David C. Kuo - Officer	Grant or award	Common Stock, $.001 par value	156,583^{footnote F1}	$0.00	-
May 19, 2026	David C. Kuo - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	19,064^{footnote F2}	$190.36	$3.63M
Footnote F1 (shares): Consists of shares earned in settlement of performance vesting restricted stock units for the 2023-2026 performance period that were earned and settled with respect to maximum performance. Footnote F2 (shares): Consists of shares withheld to satisfy applicable tax withholding obligations.
May 19, 2026	Hung-Lun (Fred) Chang - Officer	Open-market sale	Common Stock, $.001 par value	33,630	$173.26	$5.83M
May 15, 2026	Hung-Lun (Fred) Chang - Officer	Grant or award	Common Stock, $.001 par value	224,199^{footnote F1}	$0.00	-
May 19, 2026	Hung-Lun (Fred) Chang - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	27,297^{footnote F2}	$190.36	$5.20M
Footnote F1 (shares): Consists of shares earned in settlement of performance vesting restricted stock units for the 2023-2026 performance period that were earned and settled with respect to maximum performance. Footnote F2 (shares): Consists of shares withheld to satisfy applicable tax withholding obligations.
May 11, 2026	Stefan J. Murry - Officer	Open-market sale	Common Stock, $.001 par value	4,000^{footnote F1}	$159.53	$638K
Footnote F1 (shares): 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 $155.00 to $168.33 per share. The price reported reflects the weighted average… Full note on SEC EDGAR
Apr 22, 2026	Chih-Hsiang (Thompson) Lin - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	9,331^{footnote F1}	$150.57	$1.40M
Apr 22, 2026	Chih-Hsiang (Thompson) Lin - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	2,486^{footnote F2}	$150.57	$374K
Apr 22, 2026	Chih-Hsiang (Thompson) Lin - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	2,690^{footnote F3}	$150.57	$405K
Apr 22, 2026	Chih-Hsiang (Thompson) Lin - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	2,165^{footnote F4}	$150.57	$326K
Footnote F1 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023. Footnote F2 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024. Footnote F3 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025. Footnote F4 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.
Apr 22, 2026	Hung-Lun (Fred) Chang - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	2,940^{footnote F1}	$150.57	$443K
Apr 22, 2026	Hung-Lun (Fred) Chang - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	673^{footnote F2}	$150.57	$101K
Apr 22, 2026	Hung-Lun (Fred) Chang - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	850^{footnote F3}	$150.57	$128K
Apr 22, 2026	Hung-Lun (Fred) Chang - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	677^{footnote F4}	$150.57	$102K
Footnote F1 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023. Footnote F2 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024. Footnote F3 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025. Footnote F4 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.
Apr 22, 2026	David C. Kuo - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	2,053^{footnote F1}	$150.57	$309K
Apr 22, 2026	David C. Kuo - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	518^{footnote F2}	$150.57	$78K
Apr 22, 2026	David C. Kuo - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	567^{footnote F3}	$150.57	$85K
Apr 22, 2026	David C. Kuo - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	447^{footnote F4}	$150.57	$67K
Footnote F1 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023. Footnote F2 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024. Footnote F3 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025. Footnote F4 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.
Apr 22, 2026	Stefan J. Murry - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	3,266^{footnote F1}	$150.57	$492K
Apr 22, 2026	Stefan J. Murry - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	746^{footnote F2}	$150.57	$112K
Apr 22, 2026	Stefan J. Murry - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	1,086^{footnote F3}	$150.57	$164K
Apr 22, 2026	Stefan J. Murry - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	846^{footnote F4}	$150.57	$127K
Footnote F1 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023. Footnote F2 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024. Footnote F3 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025. Footnote F4 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.
Apr 22, 2026	Shu-Hua (Joshua) Yeh - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	861^{footnote F3}	$150.57	$130K
Apr 22, 2026	Shu-Hua (Joshua) Yeh - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	2,553^{footnote F1}	$150.57	$384K
Apr 22, 2026	Shu-Hua (Joshua) Yeh - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	609^{footnote F2}	$150.57	$92K
Apr 22, 2026	Shu-Hua (Joshua) Yeh - Officer	Tax withholding / forfeiture	Common Stock, $.001 par value	686^{footnote F4}	$150.57	$103K
Footnote F1 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023. Footnote F2 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024. Footnote F3 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025. Footnote F4 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.
Apr 10, 2026	Stefan J. Murry - Officer	Open-market sale	Common Stock, $.001 par value	4,000^{footnote F1}	$136.50	$546K
Footnote F1 (shares): 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 $134.02 to $140.20 per share. The price reported reflects the weighted average… Full note on SEC EDGAR
Mar 19, 2026	David C. Kuo - Officer	Open-market sale	Common Stock, $.001 par value	29,000^{footnote F1}	$100.13	$2.90M
Footnote F1 (shares): The shares were sold in multiple transactions on March 19, 2026 at actual sale prices ranging from $100.00 to $100.44 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC… Full note on SEC EDGAR
Mar 16, 2026	Hung-Lun (Fred) Chang - Officer	Open-market sale	Common Stock, $.001 par value	36,400^{footnote F1}	$100.25	$3.65M
Footnote F1 (shares): The shares were sold in multiple transactions on March 16, 2026 at actual sale prices ranging from $100.00 to $100.80 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC… Full note on SEC EDGAR
Mar 6, 2026	Min-Chu (Mike) Chen - Director	Open-market sale	Common Stock, $.001 par value	2,500	$97.00	$243K
Mar 9, 2026	Min-Chu (Mike) Chen - Director	Open-market sale	Common Stock, $.001 par value	8,835^{footnote F2}	$108.72	$961K
Footnote F2 (shares): The shares were sold in multiple transactions at actual sale prices ranging from $105.50 to $110.20 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by the SEC staff, the issuer… Full note on SEC EDGAR
Mar 9, 2026	Shu-Hua (Joshua) Yeh - Officer	Open-market sale	Common Stock, $.001 par value	50,000^{footnote F1}	$97.10	$4.85M
Footnote F1 (shares): These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. The shares were sold in multiple transactions at actual sale prices ranging from $94.670 to $99.332 per share. The price reported reflects the weighted average… Full note on SEC EDGAR
Mar 9, 2026	William H. Yeh - Director	Open-market sale	Common Stock, $.001 par value	15,000^{footnote F1}	$105.76	$1.59M
Footnote F1 (shares): The shares were sold in multiple transactions on March 09, 2026 at actual sale prices ranging from $104.50 to $108.32 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC… Full note on SEC EDGAR
Mar 10, 2026	Stefan J. Murry - Officer	Open-market sale	Common Stock, $.001 par value	4,000^{footnote F1}	$112.76	$451K
Footnote F1 (shares): 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 $112.520 to $113.250 per share. The price reported reflects the weighted average… Full note on SEC EDGAR
Mar 3, 2026	Elizabeth G. Loboa - Director	Open-market sale	Common Stock, $.001 par value	102,347^{footnote F1}	$95.76	$9.80M
Footnote F1 (shares): The shares were sold in multiple transactions on March 03, 2026 at actual sale prices ranging from $90.00 to $97.00 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… Full note on SEC EDGAR
Mar 4, 2026	Cynthia Delaney - Director	Open-market sale	Common Stock, $.001 par value	21,000^{footnote F1}	$98.02	$2.06M
Footnote F1 (shares): The shares were sold in multiple transactions on March 04, 2026 at actual sale prices ranging from $97.3801 to $98.5150 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC… Full note on SEC EDGAR
Mar 5, 2026	Richard B. Black - Director	Open-market sale	Common Stock, $.001 par value	3,231^{footnote F1}	$95.00	$307K
Footnote F1 (shares): The shares were sold by The Richard B. Black Revocable Trust U/A Dtd. Aug 31, 1998; Richard B. Black TTEE, to which the reporting person contributed 10,231 shares of common stock on February 19, 2024, in a transaction that resulted in a change in form of beneficial ownership… Full note on SEC EDGAR

Recent AAOI Form 8-K filings

Read AAOI company news

Sep 15, 2026Item 1.01, 2.03, 9.01

Read the filing on SEC EDGAR

Sep 10, 2026Item 1.01, 9.01

Read the filing on SEC EDGAR

Sep 1, 2026Item 1.01, 2.03, 9.01

Read the filing on SEC EDGAR

Aug 24, 2026Item 1.01, 5.02, 9.01

Recent AAOI Form 144 notices of proposed sale

An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.

Filed	Filer	Relationship	Shares	Market value	Notice
Oct 13, 2026	Stefan J. Murry	Officer	4,000	$411K	View on EDGAR
Oct 5, 2026	Shu-Hua (Joshua) Yeh	Officer	6,000

AAOI insider trading FAQ

What is the latest insider trade for AAOI?

APPLIED OPTOELECTRONICS, INC. (AAOI) had 12 insider filings in the last 90 days, with the most recent on 26 October 2026. The full record for AAOI runs to 147 Form 4 filings, the earliest from 24 October 2024. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying AAOI stock?

No insider purchases of AAOI were filed in the last 90 days. 13 purchases are on record for this company.

How many insiders are selling AAOI stock?

6 insider sales of AAOI were filed in the last 90 days, totaling $6.56M.

Where can I see AAOI SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects AAOI Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Information Technology companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Oct 26, 2026 - Hung-Lun (Fred) Chang view on EDGAR
Oct 26, 2026 - Stefan J. Murry view on EDGAR
Oct 26, 2026 - Shu-Hua (Joshua) Yeh view on EDGAR
Oct 26, 2026 - David C. Kuo view on EDGAR
Oct 26, 2026 - Chih-Hsiang (Thompson) Lin view on EDGAR
Oct 14, 2026 - Stefan J. Murry view on EDGAR
Oct 7, 2026 - Shu-Hua (Joshua) Yeh view on EDGAR
Sep 17, 2026 - Richard B. Black view on EDGAR
Sep 10, 2026 - Hung-Lun (Fred) Chang view on EDGAR

Related companies with recent insider activity

Learn more

Insider selling: signal or noise?: Why most insider sales are routine, and the few patterns worth a second look.
Form 144 vs Form 4: A Form 144 announces a planned sale; the Form 4 reports it after it happens.
Insider activity in Information Technology: Where AAOI's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

Follow AAOI with a 7-day demo

AAOI on your watchlist
Every AAOI Form 4 filing on record
Up to 3 months of AAOI price history
The daily trading plan of ranked insider buys, on a delay, with the plan archive

Start 7-day demoCard required. Your card is never charged for the demo.

Form 4 transaction type

Transactions

Total value

Open-market sale

56,172

$6.56M

Tax withholding / forfeiture

33,563

Bona-fide gift

2,200

Traded

Insider

Transaction

Security

Price

Value

Jun 9, 2026

Robert James Flanagan - Director

Grant or award

Common Stock, $.001 par value

1,166^{footnote F1}

$0.00

Footnote F1 (shares): These shares are granted in the form of Restricted Stock Units (RSUs) under the Company's 2026 Equity Incentive Plan. The grant vests as to 1/12th of the total number of shares on the same day every month starting on July 5, 2026, until all shares have vested.

Jun 9, 2026

Cynthia Delaney - Director

Grant or award

Common Stock, $.001 par value

1,166^{footnote F1}

$0.00

Footnote F1 (shares): These shares are granted in the form of Restricted Stock Units (RSUs) under the Company's 2026 Equity Incentive Plan. The grant vests as to 1/12th of the total number of shares on the same day every month starting on July 5, 2026, until all shares have vested.

Jun 9, 2026

Min-Chu (Mike) Chen - Director

Grant or award

Common Stock, $.001 par value

1,166^{footnote F1}

$0.00

Footnote F1 (shares): These shares are granted in the form of Restricted Stock Units (RSUs) under the Company's 2026 Equity Incentive Plan. The grant vests as to 1/12th of the total number of shares on the same day every month starting on July 5, 2026, until all shares have vested.

Jun 9, 2026

Richard B. Black - Director

Grant or award

Common Stock, $.001 par value

1,166^{footnote F1}

$0.00

Footnote F1 (shares): These shares are granted in the form of Restricted Stock Units (RSUs) under the Company's 2026 Equity Incentive Plan. The grant vests as to 1/12th of the total number of shares on the same day every month starting on July 5, 2026, until all shares have vested.

Jun 5, 2026

Hung-Lun (Fred) Chang - Officer

Open-market sale

Common Stock, $.001 par value

4,000^{footnote F1}

$200.07

$800K

Footnote F1 (shares): The shares were sold in multiple transactions on June 5, 2026 at actual sale prices ranging from $200.00 to $200.37 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… Full note on SEC EDGAR

Jun 4, 2026

Shu-Hua (Joshua) Yeh - Officer

Open-market sale

Common Stock, $.001 par value

5,000^{footnote F1}

$204.75

$1.02M

Jun 4, 2026

Shu-Hua (Joshua) Yeh - Officer

Open-market sale

Common Stock, $.001 par value

5,000^{footnote F2}

$205.39

$1.03M

Footnote F1 (shares): The shares were sold in multiple transactions on June 4, 2026 at actual sale prices ranging from $203.93 to $205.50 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… Full note on SEC EDGAR
Footnote F2 (shares): The shares were sold in multiple transactions on June 4, 2026 at actual sale prices ranging from $205.00 to $206.00 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… Full note on SEC EDGAR

Jun 2, 2026

Min-Chu (Mike) Chen - Director

Open-market sale

Common Stock, $.001 par value

8,247

$201.00

$1.66M

May 28, 2026

Chih-Hsiang (Thompson) Lin - Officer

Gift

Common Stock, $.001 par value

85,790

$0.00^{footnote F2}

May 28, 2026

Chih-Hsiang (Thompson) Lin - Officer

Gift

Common Stock, $.001 par value

85,790

$0.00^{footnote F2}

May 28, 2026

Chih-Hsiang (Thompson) Lin - Officer

Other

Common Stock, $.001 par value

721,812

-^{footnote F3}

May 28, 2026

Chih-Hsiang (Thompson) Lin - Officer

Other

Common Stock, $.001 par value

721,812

-^{footnote F3}

Footnote F2 (price): The reported transaction reflects the gift of a portion of the reporting person's membership interest in the LLC, valued at $15 million, as determined by utilizing the average of the high and low per share trading price on the date of the gift (the per share price on the date of… Full note on SEC EDGAR
Footnote F3 (price): The reported transaction reflects the transfer of a certain portion of the reporting person's membership interest in the LLC from the reporting person to the Family Trust, in exchange for a promissory note in the principal amount of $126,205,171.69, representing the fair market… Full note on SEC EDGAR

May 26, 2026

Cynthia Delaney - Director

Open-market sale

Common Stock, $.001 par value

56,575^{footnote F1}

$189.23

$10.71M

Footnote F1 (shares): The shares were sold in multiple transactions on May 26, 2026 at actual sale prices ranging from $185.00 to $194.78 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… Full note on SEC EDGAR

May 19, 2026

Shu-Hua (Joshua) Yeh - Officer

Open-market sale

Common Stock, $.001 par value

39,154

$173.26

$6.78M

May 15, 2026

Shu-Hua (Joshua) Yeh - Officer

Grant or award

Common Stock, $.001 par value

192,170^{footnote F1}

$0.00

May 19, 2026

Shu-Hua (Joshua) Yeh - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

7,928^{footnote F2}

$190.36

$1.51M

Footnote F1 (shares): Consists of shares earned in settlement of performance vesting restricted stock units for the 2023-2026 performance period that were earned and settled with respect to maximum performance.
Footnote F2 (shares): Consists of shares withheld to satisfy applicable tax withholding obligations.

May 19, 2026

Stefan J. Murry - Officer

Open-market sale

Common Stock, $.001 par value

33,000

$173.26

$5.72M

May 15, 2026

Stefan J. Murry - Officer

Grant or award

Common Stock, $.001 par value

249,110^{footnote F1}

$0.00

May 19, 2026

Stefan J. Murry - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

30,330^{footnote F2}

$190.36

$5.77M

Footnote F1 (shares): Consists of shares earned in settlement of performance vesting restricted stock units for the 2023-2026 performance period that were earned and settled with respect to maximum performance.
Footnote F2 (shares): Consists of shares withheld to satisfy applicable tax withholding obligations.

May 19, 2026

Chih-Hsiang (Thompson) Lin - Officer

Open-market sale

Common Stock, $.001 par value

58,000

$173.26

$10.05M

May 15, 2026

Chih-Hsiang (Thompson) Lin - Officer

Grant or award

Common Stock, $.001 par value

711,743^{footnote F1}

$0.00

May 19, 2026

Chih-Hsiang (Thompson) Lin - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

86,655^{footnote F2}

$190.36

$16.50M

Footnote F1 (shares): Consists of shares earned in settlement of performance vesting restricted stock units for the 2023-2026 performance period that were earned and settled with respect to maximum performance.
Footnote F2 (shares): Consists of shares withheld to satisfy applicable tax withholding obligations.

May 19, 2026

David C. Kuo - Officer

Open-market sale

Common Stock, $.001 par value

19,227

$173.26

$3.33M

May 15, 2026

David C. Kuo - Officer

Grant or award

Common Stock, $.001 par value

156,583^{footnote F1}

$0.00

May 19, 2026

David C. Kuo - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

19,064^{footnote F2}

$190.36

$3.63M

Footnote F1 (shares): Consists of shares earned in settlement of performance vesting restricted stock units for the 2023-2026 performance period that were earned and settled with respect to maximum performance.
Footnote F2 (shares): Consists of shares withheld to satisfy applicable tax withholding obligations.

May 19, 2026

Hung-Lun (Fred) Chang - Officer

Open-market sale

Common Stock, $.001 par value

33,630

$173.26

$5.83M

May 15, 2026

Hung-Lun (Fred) Chang - Officer

Grant or award

Common Stock, $.001 par value

224,199^{footnote F1}

$0.00

May 19, 2026

Hung-Lun (Fred) Chang - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

27,297^{footnote F2}

$190.36

$5.20M

Footnote F1 (shares): Consists of shares earned in settlement of performance vesting restricted stock units for the 2023-2026 performance period that were earned and settled with respect to maximum performance.
Footnote F2 (shares): Consists of shares withheld to satisfy applicable tax withholding obligations.

May 11, 2026

Stefan J. Murry - Officer

Open-market sale

Common Stock, $.001 par value

4,000^{footnote F1}

$159.53

$638K

Footnote F1 (shares): 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 $155.00 to $168.33 per share. The price reported reflects the weighted average… Full note on SEC EDGAR

Apr 22, 2026

Chih-Hsiang (Thompson) Lin - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

9,331^{footnote F1}

$150.57

$1.40M

Apr 22, 2026

Chih-Hsiang (Thompson) Lin - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

2,486^{footnote F2}

$150.57

$374K

Apr 22, 2026

Chih-Hsiang (Thompson) Lin - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

2,690^{footnote F3}

$150.57

$405K

Apr 22, 2026

Chih-Hsiang (Thompson) Lin - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

2,165^{footnote F4}

$150.57

$326K

Footnote F1 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023.
Footnote F2 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024.
Footnote F3 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025.
Footnote F4 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.

Apr 22, 2026

Hung-Lun (Fred) Chang - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

2,940^{footnote F1}

$150.57

$443K

Apr 22, 2026

Hung-Lun (Fred) Chang - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

673^{footnote F2}

$150.57

$101K

Apr 22, 2026

Hung-Lun (Fred) Chang - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

850^{footnote F3}

$150.57

$128K

Apr 22, 2026

Hung-Lun (Fred) Chang - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

677^{footnote F4}

$150.57

$102K

Footnote F1 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023.
Footnote F2 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024.
Footnote F3 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025.
Footnote F4 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.

Apr 22, 2026

David C. Kuo - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

2,053^{footnote F1}

$150.57

$309K

Apr 22, 2026

David C. Kuo - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

518^{footnote F2}

$150.57

$78K

Apr 22, 2026

David C. Kuo - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

567^{footnote F3}

$150.57

$85K

Apr 22, 2026

David C. Kuo - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

447^{footnote F4}

$150.57

$67K

Footnote F1 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023.
Footnote F2 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024.
Footnote F3 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025.
Footnote F4 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.

Apr 22, 2026

Stefan J. Murry - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

3,266^{footnote F1}

$150.57

$492K

Apr 22, 2026

Stefan J. Murry - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

746^{footnote F2}

$150.57

$112K

Apr 22, 2026

Stefan J. Murry - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

1,086^{footnote F3}

$150.57

$164K

Apr 22, 2026

Stefan J. Murry - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

846^{footnote F4}

$150.57

$127K

Footnote F1 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023.
Footnote F2 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024.
Footnote F3 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025.
Footnote F4 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.

Apr 22, 2026

Shu-Hua (Joshua) Yeh - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

861^{footnote F3}

$150.57

$130K

Apr 22, 2026

Shu-Hua (Joshua) Yeh - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

2,553^{footnote F1}

$150.57

$384K

Apr 22, 2026

Shu-Hua (Joshua) Yeh - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

609^{footnote F2}

$150.57

$92K

Apr 22, 2026

Shu-Hua (Joshua) Yeh - Officer

Tax withholding / forfeiture

Common Stock, $.001 par value

686^{footnote F4}

$150.57

$103K

Footnote F1 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023.
Footnote F2 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024.
Footnote F3 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025.
Footnote F4 (shares): Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026.

Apr 10, 2026

Stefan J. Murry - Officer

Open-market sale

Common Stock, $.001 par value

4,000^{footnote F1}

$136.50

$546K

Footnote F1 (shares): 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 $134.02 to $140.20 per share. The price reported reflects the weighted average… Full note on SEC EDGAR

Mar 19, 2026

David C. Kuo - Officer

Open-market sale

Common Stock, $.001 par value

29,000^{footnote F1}

$100.13

$2.90M

Footnote F1 (shares): The shares were sold in multiple transactions on March 19, 2026 at actual sale prices ranging from $100.00 to $100.44 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC… Full note on SEC EDGAR

Mar 16, 2026

Hung-Lun (Fred) Chang - Officer

Open-market sale

Common Stock, $.001 par value

36,400^{footnote F1}

$100.25

$3.65M

Footnote F1 (shares): The shares were sold in multiple transactions on March 16, 2026 at actual sale prices ranging from $100.00 to $100.80 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC… Full note on SEC EDGAR

Mar 6, 2026

Min-Chu (Mike) Chen - Director

Open-market sale

Common Stock, $.001 par value

2,500

$97.00

$243K

Mar 9, 2026

Min-Chu (Mike) Chen - Director

Open-market sale

Common Stock, $.001 par value

8,835^{footnote F2}

$108.72

$961K

Footnote F2 (shares): The shares were sold in multiple transactions at actual sale prices ranging from $105.50 to $110.20 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by the SEC staff, the issuer… Full note on SEC EDGAR

Mar 9, 2026

Shu-Hua (Joshua) Yeh - Officer

Open-market sale

Common Stock, $.001 par value

50,000^{footnote F1}

$97.10

$4.85M

Footnote F1 (shares): These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. The shares were sold in multiple transactions at actual sale prices ranging from $94.670 to $99.332 per share. The price reported reflects the weighted average… Full note on SEC EDGAR

Mar 9, 2026

William H. Yeh - Director

Open-market sale

Common Stock, $.001 par value

15,000^{footnote F1}

$105.76

$1.59M

Footnote F1 (shares): The shares were sold in multiple transactions on March 09, 2026 at actual sale prices ranging from $104.50 to $108.32 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC… Full note on SEC EDGAR

Mar 10, 2026

Stefan J. Murry - Officer

Open-market sale

Common Stock, $.001 par value

4,000^{footnote F1}

$112.76

$451K

Footnote F1 (shares): 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 $112.520 to $113.250 per share. The price reported reflects the weighted average… Full note on SEC EDGAR

Mar 3, 2026

Elizabeth G. Loboa - Director

Open-market sale

Common Stock, $.001 par value

102,347^{footnote F1}

$95.76

$9.80M

Footnote F1 (shares): The shares were sold in multiple transactions on March 03, 2026 at actual sale prices ranging from $90.00 to $97.00 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… Full note on SEC EDGAR

Mar 4, 2026

Cynthia Delaney - Director

Open-market sale

Common Stock, $.001 par value

21,000^{footnote F1}

$98.02

$2.06M

Footnote F1 (shares): The shares were sold in multiple transactions on March 04, 2026 at actual sale prices ranging from $97.3801 to $98.5150 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC… Full note on SEC EDGAR

Mar 5, 2026

Richard B. Black - Director

Open-market sale

Common Stock, $.001 par value

3,231^{footnote F1}

$95.00

$307K

Footnote F1 (shares): The shares were sold by The Richard B. Black Revocable Trust U/A Dtd. Aug 31, 1998; Richard B. Black TTEE, to which the reporting person contributed 10,231 shares of common stock on February 19, 2024, in a transaction that resulted in a change in form of beneficial ownership… Full note on SEC EDGAR

Filed

Filer

Relationship

Market value

Notice

Oct 13, 2026

Stefan J. Murry

Officer

4,000

$411K

View on EDGAR

Oct 5, 2026

Shu-Hua (Joshua) Yeh

Officer

6,000