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Super Micro Computer, Inc. (SMCI) · Insider trading

What Super Micro Computer's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$18.91M
4 insiders, 82% under a plan
Net, 12 months
−$18.91M
bought less sold
Latest filing
2026-09-08
filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

2025-01 2025-02: $9.09M sold 2025-05: $22.25M sold 2025-06: $27.00M sold 2025-07: $24.00M sold 2025-07 2025-08: $1.76M sold 2025-09: $2.14M sold 2025-11: $3.47M sold 2026-01 2026-07 2026-09: $15.44M sold
Bought Sold Largest month: $27.00M

Who traded, two years

InsiderBoughtSold TradesLast tradeHolds after
Liu Liang Chiu-Chu SaraDirector, 10% owner – $44.55M 8 2026-09-04 437,506
Liang CharlesDirector, President and CEO, 10% owner – $44.53M 8 2026-09-04 –
Kao GeorgeSVP, OPERATIONS – $8.55M 4 2025-11-24 134,691
Weigand David eSVP, Chief Financial Officer – $5.09M 4 2025-09-15 100,188
Tuan ShermanDirector – $1.60M 1 2025-11-26 207,156
Blair Robert LDirector – $828,557 2 2025-02-28 5,860

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

DateInsiderTradeShares PriceValueHolds afterFiling
2026-09-04 Liu Liang Chiu-Chu SaraDirector, 10% owner Saleplan 100,000 40.00 $4.00M 437,506 Form 4
2026-09-04 Liang CharlesDirector, President and CEO, 10% owner Saleplanindirect 100,000 40.00 $4.00M 437,506 Form 4
2026-09-03 Liu Liang Chiu-Chu SaraDirector, 10% owner Saleplan 42,565 36.60 $1.56M 594,941 Form 4
2026-09-03 Liu Liang Chiu-Chu SaraDirector, 10% owner Saleplan 57,435 37.62 $2.16M 537,506 Form 4
2026-09-03 Liang CharlesDirector, President and CEO, 10% owner Saleplanindirect 42,565 36.60 $1.56M 594,941 Form 4
2026-09-03 Liang CharlesDirector, President and CEO, 10% owner Saleplanindirect 57,435 37.62 $2.16M 537,506 Form 4
2025-11-26 Tuan ShermanDirector Sale 48,630 33.00 $1.60M 207,156 Form 4
2025-11-24 Kao GeorgeSVP, OPERATIONS Sale 56,904 32.83 $1.87M 134,691 Form 4
2025-09-15 Weigand David eSVP, Chief Financial Officer Saleplan 25,000 45.14 $1.13M 100,188 Form 4
2025-09-03 Weigand David eSVP, Chief Financial Officer Saleplan 24,700 40.28 $994,916 100,488 Form 4
2025-09-03 Weigand David eSVP, Chief Financial Officer Saleplan 300 40.85 $12,255 100,188 Form 4
2025-08-22 Kao GeorgeSVP, OPERATIONS Sale 40,000 43.88 $1.76M 21,820 Form 4
2025-07-28 Liu Liang Chiu-Chu SaraDirector, 10% owner Saleplanindirect 200,000 60.00 $12.00M 40,426,120 Form 4
2025-07-28 Liang CharlesDirector, President and CEO, 10% owner Saleplan 200,000 60.00 $12.00M 40,426,120 Form 4
2025-06-18 Liu Liang Chiu-Chu SaraDirector, 10% owner Saleplanindirect 300,000 45.00 $13.50M 66,903,640 Form 4
2025-06-18 Liang CharlesDirector, President and CEO, 10% owner Saleplan 300,000 45.00 $13.50M 66,903,640 Form 4
2025-05-20 Weigand David eSVP, Chief Financial Officer Sale 67,000 44.02 $2.95M 88,599 Form 4
2025-05-14 Kao GeorgeSVP, OPERATIONS Sale 28,400 45.86 $1.30M 20,624 Form 4
2025-05-14 Liu Liang Chiu-Chu SaraDirector, 10% owner Saleindirect 184,694 44.98 $8.31M 67,218,946 Form 4
2025-05-14 Liu Liang Chiu-Chu SaraDirector, 10% owner Saleindirect 15,306 45.56 $697,341 67,203,640 Form 4
2025-05-14 Liang CharlesDirector, President and CEO, 10% owner Sale 184,694 44.98 $8.31M 67,218,946 Form 4
2025-05-14 Liang CharlesDirector, President and CEO, 10% owner Sale 15,306 44.56 $682,035 67,203,640 Form 4
2025-02-28 Blair Robert LDirector Sale 13,600 42.46 $577,456 5,860 Form 4
2025-02-28 Blair Robert LDirector Sale 5,860 42.85 $251,101 0 Form 4
2025-02-26 Kao GeorgeSVP, OPERATIONS Sale 71,720 50.48 $3.62M 19,449 Form 4
2025-02-26 Liu Liang Chiu-Chu SaraDirector, 10% owner Sale 46,293 50.17 $2.32M 0 Form 4
2025-02-26 Liang CharlesDirector, President and CEO, 10% owner Saleindirect 46,293 50.17 $2.32M 0 Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

174 × option exercise149 × shares withheld for tax6 × other5 × gift
Show them
DateInsiderWhatShares PriceHolds afterFiling
2026-08-17 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +3,650 – 639,476 Form 4
2026-08-17 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −1,970 38.28 637,506 Form 4
2026-08-17 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +3,650 – 639,476 Form 4
2026-08-17 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −1,970 38.28 637,506 Form 4
2026-08-17 Cheung KennethSVP, Chief Accounting Officer Option exercise M +2,250 – 64,580 Form 4
2026-08-17 Cheung KennethSVP, Chief Accounting Officer Shares withheld for tax F −808 38.28 63,772 Form 4
2026-08-17 Weigand David eSVP, Chief Financial Officer Option exercise M +6,500 – 138,038 Form 4
2026-08-17 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −3,308 38.28 134,730 Form 4
2026-08-17 Xiao JinSr. Corporate VP, Engineering Option exercise M +4,000 – 196,022 Form 4
2026-08-17 Xiao JinSr. Corporate VP, Engineering Shares withheld for tax F −1,436 38.28 194,586 Form 4
2026-08-17 Malyala VikranthSVP, Chief Business Officer Option exercise M +6,000 – 50,930 Form 4
2026-08-17 Malyala VikranthSVP, Chief Business Officer Shares withheld for tax F −3,053 38.28 47,877 Form 4
2026-08-17 Thauberger MatthewChief Revenue Officer Option exercise M +2,250 – 7,632 Form 4
2026-08-17 Thauberger MatthewChief Revenue Officer Shares withheld for tax F −1,145 38.28 6,487 Form 4
2026-08-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +2,110 – 636,494 Form 4
2026-08-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −1,139 31.46 635,355 Form 4
2026-08-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +1,024 – 636,379 Form 4
2026-08-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −553 31.46 635,826 Form 4
2026-08-10 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +2,110 – 636,494 Form 4
2026-08-10 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −1,139 31.46 635,355 Form 4
2026-08-10 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +1,024 – 636,379 Form 4
2026-08-10 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −553 31.46 635,826 Form 4
2026-08-10 Cheung KennethSVP, Chief Accounting Officer Option exercise M +1,250 – 60,581 Form 4
2026-08-10 Cheung KennethSVP, Chief Accounting Officer Shares withheld for tax F −449 31.46 60,132 Form 4
2026-08-10 Cheung KennethSVP, Chief Accounting Officer Option exercise M +3,429 – 63,561 Form 4
2026-08-10 Cheung KennethSVP, Chief Accounting Officer Shares withheld for tax F −1,231 31.46 62,330 Form 4
2026-08-10 Weigand David eSVP, Chief Financial Officer Option exercise M +1,480 – 132,292 Form 4
2026-08-10 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −754 31.46 131,538 Form 4
2026-08-10 Xiao JinSr. Corporate VP, Engineering Option exercise M +1,970 – 192,073 Form 4
2026-08-10 Xiao JinSr. Corporate VP, Engineering Shares withheld for tax F −707 31.46 191,366 Form 4
2026-08-10 Xiao JinSr. Corporate VP, Engineering Option exercise M +1,024 – 192,390 Form 4
2026-08-10 Xiao JinSr. Corporate VP, Engineering Shares withheld for tax F −368 31.46 192,022 Form 4
2026-08-10 Malyala VikranthSVP, Chief Business Officer Option exercise M +2,110 – 45,446 Form 4
2026-08-10 Malyala VikranthSVP, Chief Business Officer Shares withheld for tax F −1,074 31.46 44,372 Form 4
2026-08-10 Malyala VikranthSVP, Chief Business Officer Option exercise M +1,138 – 45,510 Form 4
2026-08-10 Malyala VikranthSVP, Chief Business Officer Shares withheld for tax F −580 31.46 44,930 Form 4
2026-08-10 Thauberger MatthewOther Option exercise M +740 – 5,548 Form 4
2026-08-10 Thauberger MatthewOther Shares withheld for tax F −377 31.46 5,171 Form 4
2026-08-10 Thauberger MatthewOther Option exercise M +430 – 5,601 Form 4
2026-08-10 Thauberger MatthewOther Shares withheld for tax F −219 31.46 5,382 Form 4
2026-07-01 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +830 – 634,473 Form 4
2026-07-01 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −448 27.65 634,025 Form 4
2026-07-01 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +510 – 634,535 Form 4
2026-07-01 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −276 27.65 634,259 Form 4
2026-07-01 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +273 – 634,532 Form 4
2026-07-01 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −148 27.65 634,384 Form 4
2026-07-01 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +830 – 634,473 Form 4
2026-07-01 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −448 27.65 634,025 Form 4
2026-07-01 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +510 – 634,535 Form 4
2026-07-01 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −276 27.65 634,259 Form 4
2026-07-01 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +273 – 634,532 Form 4
2026-07-01 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −148 27.65 634,384 Form 4
2026-07-01 Weigand David eSVP, Chief Financial Officer Option exercise M +9,380 – 130,505 Form 4
2026-07-01 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −4,773 27.65 125,732 Form 4
2026-07-01 Weigand David eSVP, Chief Financial Officer Option exercise M +5,110 – 130,842 Form 4
2026-07-01 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −2,600 27.65 128,242 Form 4
2026-07-01 Weigand David eSVP, Chief Financial Officer Option exercise M +1,080 – 129,322 Form 4
2026-07-01 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −550 27.65 128,772 Form 4
2026-07-01 Weigand David eSVP, Chief Financial Officer Option exercise M +2,991 – 131,763 Form 4
2026-07-01 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −1,522 27.65 130,241 Form 4
2026-07-01 Weigand David eSVP, Chief Financial Officer Option exercise M +1,164 – 131,405 Form 4
2026-07-01 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −593 27.65 130,812 Form 4
2026-07-01 Malyala VikranthSVP, Chief Business Officer Option exercise M +4,600 – 44,135 Form 4
2026-07-01 Malyala VikranthSVP, Chief Business Officer Shares withheld for tax F −2,341 27.65 41,794 Form 4
2026-07-01 Malyala VikranthSVP, Chief Business Officer Option exercise M +1,220 – 43,014 Form 4
2026-07-01 Malyala VikranthSVP, Chief Business Officer Shares withheld for tax F −621 27.65 42,393 Form 4
2026-07-01 Malyala VikranthSVP, Chief Business Officer Option exercise M +1,413 – 43,806 Form 4
2026-07-01 Malyala VikranthSVP, Chief Business Officer Shares withheld for tax F −719 27.65 43,087 Form 4
2026-07-01 Malyala VikranthSVP, Chief Business Officer Option exercise M +507 – 43,594 Form 4
2026-07-01 Malyala VikranthSVP, Chief Business Officer Shares withheld for tax F −258 27.65 43,336 Form 4
2026-06-30 Blair Robert LDirector Option exercise M +5,383 – 6,963 Form 4
2026-06-30 Liu Tally CDirector Option exercise M +2,691 – 288,738 Form 4
2026-06-30 Lin Judy L.Director Option exercise M +5,383 – 60,323 Form 4
2026-06-30 Mogensen SusanDirector Option exercise M +5,383 – 8,663 Form 4
2026-06-30 Angel ScottDirector Option exercise M +5,383 – 7,055 Form 4
2026-06-17 Weigand David eSVP, Chief Financial Officer Option exercise M +5,000 – 122,919 Form 4
2026-06-17 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −1,794 27.78 121,125 Form 4
2026-06-17 Malyala VikranthSVP, Chief Business Officer Option exercise M +7,500 – 42,360 Form 4
2026-06-17 Malyala VikranthSVP, Chief Business Officer Shares withheld for tax F −2,825 27.78 39,535 Form 4
2026-05-26 Liu Liang Chiu-Chu SaraDirector, 10% owner Gift G −340,000 – 25,332,520 Form 4
2026-05-26 Liang CharlesDirector, President and CEO, 10% owner Gift G −340,000 – 25,332,520 Form 4
2026-05-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +2,120 – 632,900 Form 4
2026-05-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −1,144 35.37 631,756 Form 4
2026-05-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +4,098 – 635,854 Form 4
2026-05-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −2,211 35.37 633,643 Form 4
2026-05-10 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +2,120 – 632,900 Form 4
2026-05-10 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −1,144 35.37 631,756 Form 4
2026-05-10 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +4,098 – 635,854 Form 4
2026-05-10 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −2,211 35.37 633,643 Form 4
2026-05-10 Cheung KennethSVP, Chief Accounting Officer Option exercise M +1,250 – 59,780 Form 4
2026-05-10 Cheung KennethSVP, Chief Accounting Officer Shares withheld for tax F −449 35.37 59,331 Form 4
2026-05-10 Clegg Don WSVP, Worldwide Sales Option exercise M +1,020 – 50,079 Form 4
2026-05-10 Clegg Don WSVP, Worldwide Sales Shares withheld for tax F −366 35.37 49,713 Form 4
2026-05-10 Clegg Don WSVP, Worldwide Sales Option exercise M +1,290 – 51,003 Form 4
2026-05-10 Clegg Don WSVP, Worldwide Sales Shares withheld for tax F −463 35.37 50,540 Form 4
2026-05-10 Weigand David eSVP, Chief Financial Officer Option exercise M +2,680 – 117,926 Form 4
2026-05-10 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −962 35.37 116,964 Form 4
2026-05-10 Weigand David eSVP, Chief Financial Officer Option exercise M +1,490 – 118,454 Form 4
2026-05-10 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −535 35.37 117,919 Form 4
2026-05-10 Xiao JinSr. Corporate VP, Engineering Option exercise M +1,970 – 188,183 Form 4
2026-05-10 Xiao JinSr. Corporate VP, Engineering Shares withheld for tax F −707 35.37 187,476 Form 4
2026-05-10 Xiao JinSr. Corporate VP, Engineering Option exercise M +4,098 – 191,574 Form 4
2026-05-10 Xiao JinSr. Corporate VP, Engineering Shares withheld for tax F −1,471 35.37 190,103 Form 4
2026-02-27 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +20,980 4.24 630,780 Form 4
2026-02-27 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +20,980 4.24 630,780 Form 4
2026-02-17 Liaw Yih-Shyan WallyDirector Option exercise M +3,400 – 95,712 Form 4
2026-02-17 Liaw Yih-Shyan WallyDirector Shares withheld for tax F −1,220 30.11 94,492 Form 4
2026-02-17 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +3,650 – 611,908 Form 4
2026-02-17 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −2,108 30.11 609,800 Form 4
2026-02-17 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +3,650 – 611,908 Form 4
2026-02-17 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −2,108 30.11 609,800 Form 4
2026-02-17 Cheung KennethSVP, Chief Accounting Officer Option exercise M +2,250 – 59,457 Form 4
2026-02-17 Cheung KennethSVP, Chief Accounting Officer Shares withheld for tax F −927 30.11 58,530 Form 4
2026-02-17 Clegg Don WSVP, Worldwide Sales Option exercise M +1,750 – 49,775 Form 4
2026-02-17 Clegg Don WSVP, Worldwide Sales Shares withheld for tax F −716 30.11 49,059 Form 4
2026-02-17 Weigand David eSVP, Chief Financial Officer Option exercise M +6,500 – 117,579 Form 4
2026-02-17 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −2,333 30.11 115,246 Form 4
2026-02-17 Xiao JinSr. Corporate VP, Engineering Option exercise M +4,000 – 187,747 Form 4
2026-02-17 Xiao JinSr. Corporate VP, Engineering Shares withheld for tax F −1,534 30.11 186,213 Form 4
2026-02-10 Liaw Yih-Shyan WallyDirector Option exercise M +4,380 – 90,778 Form 4
2026-02-10 Liaw Yih-Shyan WallyDirector Shares withheld for tax F −1,804 33.33 88,974 Form 4
2026-02-10 Liaw Yih-Shyan WallyDirector Option exercise M +4,370 – 93,344 Form 4
2026-02-10 Liaw Yih-Shyan WallyDirector Shares withheld for tax F −1,575 33.33 91,769 Form 4
2026-02-10 Liaw Yih-Shyan WallyDirector Option exercise M +848 – 92,617 Form 4
2026-02-10 Liaw Yih-Shyan WallyDirector Shares withheld for tax F −305 33.33 92,312 Form 4
2026-02-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +2,110 – 609,509 Form 4
2026-02-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −1,251 33.33 608,258 Form 4
2026-02-10 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +2,110 – 609,509 Form 4
2026-02-10 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −1,251 33.33 608,258 Form 4
2026-02-10 Cheung KennethSVP, Chief Accounting Officer Option exercise M +1,250 – 57,722 Form 4
2026-02-10 Cheung KennethSVP, Chief Accounting Officer Shares withheld for tax F −515 33.33 57,207 Form 4
2026-02-10 Clegg Don WSVP, Worldwide Sales Option exercise M +1,020 – 47,688 Form 4
2026-02-10 Clegg Don WSVP, Worldwide Sales Shares withheld for tax F −421 33.33 47,267 Form 4
2026-02-10 Clegg Don WSVP, Worldwide Sales Option exercise M +1,290 – 48,557 Form 4
2026-02-10 Clegg Don WSVP, Worldwide Sales Shares withheld for tax F −532 33.33 48,025 Form 4
2026-02-10 Weigand David eSVP, Chief Financial Officer Option exercise M +2,670 – 111,308 Form 4
2026-02-10 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −1,100 33.33 110,208 Form 4
2026-02-10 Weigand David eSVP, Chief Financial Officer Option exercise M +1,480 – 111,688 Form 4
2026-02-10 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −609 33.33 111,079 Form 4
2026-02-10 Xiao JinSr. Corporate VP, Engineering Option exercise M +1,970 – 184,559 Form 4
2026-02-10 Xiao JinSr. Corporate VP, Engineering Shares withheld for tax F −812 33.33 183,747 Form 4
2026-01-29 Liu Tally CDirector Option exercise M +747 – 286,047 Form 4
2025-11-26 Liu Liang Chiu-Chu SaraDirector, 10% owner Gift G −5,000 – 25,672,520 Form 4
2025-11-26 Liang CharlesDirector, President and CEO, 10% owner Gift G −5,000 – 25,672,520 Form 4
2025-11-24 Kao GeorgeSVP, OPERATIONS Option exercise M +48,750 7.66 183,441 Form 4
2025-11-24 Kao GeorgeSVP, OPERATIONS Option exercise M +8,154 24.52 191,595 Form 4
2025-11-13 Kao GeorgeSVP, OPERATIONS Option exercise M +15,600 2.04 42,591 Form 4
2025-11-13 Kao GeorgeSVP, OPERATIONS Option exercise M +12,100 2.37 54,691 Form 4
2025-11-13 Kao GeorgeSVP, OPERATIONS Option exercise M +80,000 2.70 134,691 Form 4
2025-11-10 Liaw Yih-Shyan WallyDirector Option exercise M +4,370 – 84,793 Form 4
2025-11-10 Liaw Yih-Shyan WallyDirector Shares withheld for tax F −2,220 40.19 82,573 Form 4
2025-11-10 Liaw Yih-Shyan WallyDirector Option exercise M +4,380 – 86,953 Form 4
2025-11-10 Liaw Yih-Shyan WallyDirector Shares withheld for tax F −2,225 40.19 84,728 Form 4
2025-11-10 Liaw Yih-Shyan WallyDirector Option exercise M +3,394 – 88,122 Form 4
2025-11-10 Liaw Yih-Shyan WallyDirector Shares withheld for tax F −1,724 40.19 86,398 Form 4
2025-11-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +2,110 – 608,536 Form 4
2025-11-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −1,137 40.19 607,399 Form 4
2025-11-10 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +2,110 – 608,536 Form 4
2025-11-10 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −1,137 40.19 607,399 Form 4
2025-11-10 Cheung KennethSVP, Chief Accounting Officer Option exercise M +1,250 – 57,107 Form 4
2025-11-10 Cheung KennethSVP, Chief Accounting Officer Shares withheld for tax F −635 40.19 56,472 Form 4
2025-11-10 Clegg Don WSVP, Worldwide Sales Option exercise M +1,020 – 46,552 Form 4
2025-11-10 Clegg Don WSVP, Worldwide Sales Shares withheld for tax F −518 40.19 46,034 Form 4
2025-11-10 Clegg Don WSVP, Worldwide Sales Option exercise M +1,290 – 47,324 Form 4
2025-11-10 Clegg Don WSVP, Worldwide Sales Shares withheld for tax F −656 40.19 46,668 Form 4
2025-11-10 Kao GeorgeSVP, OPERATIONS Option exercise M +1,840 – 26,120 Form 4
2025-11-10 Kao GeorgeSVP, OPERATIONS Shares withheld for tax F −935 40.19 25,185 Form 4
2025-11-10 Kao GeorgeSVP, OPERATIONS Option exercise M +3,670 – 28,855 Form 4
2025-11-10 Kao GeorgeSVP, OPERATIONS Shares withheld for tax F −1,864 40.19 26,991 Form 4
2025-11-10 Weigand David eSVP, Chief Financial Officer Option exercise M +2,680 – 109,266 Form 4
2025-11-10 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −1,361 40.19 107,905 Form 4
2025-11-10 Weigand David eSVP, Chief Financial Officer Option exercise M +1,490 – 109,395 Form 4
2025-11-10 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −757 40.19 108,638 Form 4
2025-10-30 Liaw Yih-Shyan WallyDirector Option exercise M +5,000 – 82,963 Form 4
2025-10-30 Liaw Yih-Shyan WallyDirector Shares withheld for tax F −2,540 50.37 80,423 Form 4
2025-10-30 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +6,000 – 609,657 Form 4
2025-10-30 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −3,231 50.37 606,426 Form 4
2025-10-30 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +6,000 – 609,657 Form 4
2025-10-30 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −3,231 50.37 606,426 Form 4
2025-10-30 Clegg Don WSVP, Worldwide Sales Option exercise M +6,000 – 48,579 Form 4
2025-10-30 Clegg Don WSVP, Worldwide Sales Shares withheld for tax F −3,047 50.37 45,532 Form 4
2025-10-30 Kao GeorgeSVP, OPERATIONS Option exercise M +5,000 – 26,820 Form 4
2025-10-30 Kao GeorgeSVP, OPERATIONS Shares withheld for tax F −2,540 50.37 24,280 Form 4
2025-10-30 Weigand David eSVP, Chief Financial Officer Option exercise M +13,000 – 113,188 Form 4
2025-10-30 Weigand David eSVP, Chief Financial Officer Shares withheld for tax F −6,602 50.37 106,586 Form 4
2025-09-15 Weigand David eSVP, Chief Financial Officer Option exercise M +25,000 5.30 125,188 Form 4
2025-09-03 Weigand David eSVP, Chief Financial Officer Option exercise M +25,000 5.30 125,188 Form 4
2025-08-22 Kao GeorgeSVP, OPERATIONS Option exercise M +40,000 2.70 61,820 Form 4
2025-08-10 Liaw Yih-Shyan WallyDirector Option exercise M +4,380 – 77,877 Form 4
2025-08-10 Liaw Yih-Shyan WallyDirector Shares withheld for tax F −2,064 44.60 75,813 Form 4
2025-08-10 Liaw Yih-Shyan WallyDirector Option exercise M +4,370 – 80,183 Form 4
2025-08-10 Liaw Yih-Shyan WallyDirector Shares withheld for tax F −2,220 44.60 77,963 Form 4
2025-08-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Option exercise M +2,110 – 604,794 Form 4
2025-08-10 Liu Liang Chiu-Chu SaraDirector, 10% owner Shares withheld for tax F −1,137 44.60 603,657 Form 4
2025-08-10 Liang CharlesDirector, President and CEO, 10% owner Option exercise M +2,110 – 604,794 Form 4
2025-08-10 Liang CharlesDirector, President and CEO, 10% owner Shares withheld for tax F −1,137 44.60 603,657 Form 4
2025-08-10 Cheung KennethSVP, Chief Accounting Officer Option exercise M +1,620 – 54,872 Form 4
2025-08-10 Cheung KennethSVP, Chief Accounting Officer Shares withheld for tax F −823 44.60 54,049 Form 4
2025-08-10 Cheung KennethSVP, Chief Accounting Officer Option exercise M +1,250 – 55,299 Form 4
2025-08-10 Cheung KennethSVP, Chief Accounting Officer Shares withheld for tax F −635 44.60 54,664 Form 4

How to read it

Buy, sale
Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan
A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after
The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value
Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

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