Kulicke & Soffa Industries Inc (KLIC) · Insider trading
What Kulicke & Soffa Industries'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
$18.41M
7 insiders, 22% under a plan
Net, 12 months
−$18.41M
bought less sold
Latest filing
2026-10-16
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Wong Lester AInterim CEO and CFO | – | $10.08M | 2 | 2026-06-18 | 50,743 |
| Wong Nelson MunpunSenior Vice President | – | $8.63M | 7 | 2026-06-12 | 71,369 |
| Chen Fusen ErnieDirector, President and CEO | – | $3.86M | 1 | 2024-12-05 | 1,100,765 |
| Yeo Mui SungDirector | – | $3.38M | 2 | 2026-05-20 | 59,197 |
| Chong Chan PinExecutive Vice President | – | $2.08M | 2 | 2024-11-20 | 46,646 |
| Lim Chin HuDirector | – | $1.44M | 1 | 2024-12-06 | 59,701 |
| Chylak Robert NestorSenior Vice President | – | $1.08M | 2 | 2026-02-10 | 22,987 |
| Richardson David JeffreyDirector | – | $676,081 | 1 | 2026-02-25 | – |
| Lim Zi YaoGeneral Counsel | – | $271,010 | 3 | 2026-05-11 | 21,214 |
| Kong Peter T MDirector | – | $170,610 | 1 | 2026-06-11 | 100,009 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-18 | Wong Lester AInterim CEO and CFO | Sale | 60,000 | 121.71 | $7.30M | 50,743 | Form 4 |
| 2026-06-12 | Wong Nelson MunpunSenior Vice President | Sale | 15,000 | 113.72 | $1.71M | 71,369 | Form 4 |
| 2026-06-11 | Kong Peter T MDirector | Sale | 1,551 | 110.00 | $170,610 | 100,009 | Form 4 |
| 2026-05-20 | Yeo Mui SungDirector | Sale | 20,000 | 100.00 | $2.00M | 59,197 | Form 4 |
| 2026-05-11 | Lim Zi YaoGeneral Counsel | Sale | 1,500 | 102.98 | $154,470 | 21,214 | Form 4 |
| 2026-02-25 | Richardson David JeffreyDirector | Saleindirect | 9,364 | 72.20 | $676,081 | 17,694 | Form 4 |
| 2026-02-13 | Yeo Mui SungDirector | Sale | 19,143 | 71.98 | $1.38M | 78,522 | Form 4 |
| 2026-02-10 | Chylak Robert NestorSenior Vice President | Sale | 7,098 | 73.28 | $520,141 | 22,987 | Form 4 |
| 2026-02-09 | Lim Zi YaoGeneral Counsel | Sale | 1,000 | 71.54 | $71,540 | 22,714 | Form 4 |
| 2026-02-05 | Wong Nelson MunpunSenior Vice President | Saleplan | 39,800 | 60.98 | $2.43M | 86,369 | Form 4 |
| 2026-01-22 | Wong Nelson MunpunSenior Vice President | Saleplan | 200 | 60.00 | $12,000 | 126,169 | Form 4 |
| 2026-01-12 | Wong Nelson MunpunSenior Vice President | Saleplan | 30,000 | 56.53 | $1.70M | 126,369 | Form 4 |
| 2025-12-08 | Wong Nelson MunpunSenior Vice President | Sale | 5,004 | 50.07 | $250,550 | 156,369 | Form 4 |
| 2025-12-02 | Lim Zi YaoGeneral Counsel | Sale | 1,000 | 45.00 | $45,000 | 23,714 | Form 4 |
| 2025-08-12 | Wong Nelson MunpunSenior Vice President | Sale | 30,000 | 37.07 | $1.11M | 147,533 | Form 4 |
| 2024-12-09 | Chylak Robert NestorSenior Vice President | Sale | 11,391 | 49.52 | $564,082 | 20,838 | Form 4 |
| 2024-12-06 | Lim Chin HuDirector | Sale | 30,000 | 48.11 | $1.44M | 59,701 | Form 4 |
| 2024-12-05 | Chen Fusen ErnieDirector, President and CEO | Sale | 80,000 | 48.29 | $3.86M | 1,100,765 | Form 4 |
| 2024-11-21 | Wong Nelson MunPunSenior Vice President | Sale | 30,000 | 47.56 | $1.43M | 177,533 | Form 4 |
| 2024-11-20 | Wong Lester AChief Financial Officer | Sale | 60,000 | 46.37 | $2.78M | 79,636 | Form 4 |
| 2024-11-20 | Chong Chan PinExecutive Vice President | Sale | 35,270 | 46.27 | $1.63M | 46,646 | Form 4 |
| 2024-11-19 | Chong Chan PinExecutive Vice President | Sale | 9,730 | 46.07 | $448,261 | 81,916 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
62 × grant or award18 × option exercise9 × shares withheld for tax3 × gift
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-10-14 | Wong Lester ACFO | Grant or award A | +6,424 | – | 82,430 | Form 4 |
| 2026-10-14 | Wong Nelson MunpunSenior Vice President | Grant or award A | +5,734 | – | 88,089 | Form 4 |
| 2026-10-14 | Chylak Robert NestorSenior Vice President | Grant or award A | +5,753 | – | 33,133 | Form 4 |
| 2026-10-14 | Talluri Rajendra KDirector, CEO | Grant or award A | +28,398 | – | 118,095 | Form 4 |
| 2026-10-14 | Lim Zi YaoGeneral Counsel | Grant or award A | +4,071 | – | 25,285 | Form 4 |
| 2026-10-13 | Chylak Robert NestorSenior Vice President | Shares withheld for tax F | −1,157 | 88.54 | 27,380 | Form 4 |
| 2026-10-11 | Wong Lester ACFO | Option exercise M | +19,225 | – | 76,006 | Form 4 |
| 2026-10-11 | Wong Nelson MunpunSenior Vice President | Option exercise M | +10,986 | – | 82,355 | Form 4 |
| 2026-10-11 | Chylak Robert NestorSenior Vice President | Option exercise M | +9,498 | – | 32,485 | Form 4 |
| 2026-10-11 | Chylak Robert NestorSenior Vice President | Shares withheld for tax F | −3,338 | 47.44 | 29,147 | Form 4 |
| 2026-10-11 | Chylak Robert NestorSenior Vice President | Shares withheld for tax F | −610 | 47.44 | 28,537 | Form 4 |
| 2026-10-05 | Milzcik Gregory FDirector | Grant or award A | +493 | – | 79,637 | Form 4 |
| 2026-10-05 | Richardson David JeffreyDirector | Grant or award A | +493 | – | 2,451 | Form 4 |
| 2026-10-05 | Olson Jon ADirector | Grant or award A | +493 | – | 22,254 | Form 4 |
| 2026-10-05 | Kong Peter T MDirector | Grant or award A | +493 | – | 100,909 | Form 4 |
| 2026-10-05 | Yeo Mui SungDirector | Grant or award A | +493 | – | 60,097 | Form 4 |
| 2026-10-05 | Dignam DeniseDirector | Grant or award A | +493 | – | 12,104 | Form 4 |
| 2026-09-01 | Wong Lester ACFO | Grant or award A | +6,038 | – | 56,781 | Form 4 |
| 2026-09-01 | Talluri Rajendra KDirector, CEO | Grant or award A | +89,697 | – | 89,697 | Form 4 |
| 2026-07-06 | Milzcik Gregory FDirector | Grant or award A | +407 | – | 79,144 | Form 4 |
| 2026-07-06 | Richardson David JeffreyDirector | Grant or award A | +407 | – | 1,958 | Form 4 |
| 2026-07-06 | Olson Jon ADirector | Grant or award A | +407 | – | 21,761 | Form 4 |
| 2026-07-06 | Kong Peter T MDirector | Grant or award A | +407 | – | 100,416 | Form 4 |
| 2026-07-06 | Yeo Mui SungDirector | Grant or award A | +407 | – | 59,604 | Form 4 |
| 2026-07-06 | Dignam DeniseDirector | Grant or award A | +407 | – | 11,611 | Form 4 |
| 2026-04-06 | Milzcik Gregory FDirector | Grant or award A | +675 | – | 78,737 | Form 4 |
| 2026-04-06 | Richardson David JeffreyDirector | Grant or award A | +675 | – | 1,551 | Form 4 |
| 2026-04-06 | Olson Jon ADirector | Grant or award A | +675 | – | 21,354 | Form 4 |
| 2026-04-06 | Kong Peter T MDirector | Grant or award A | +675 | – | 101,560 | Form 4 |
| 2026-04-06 | Yeo Mui SungDirector | Grant or award A | +675 | – | 79,197 | Form 4 |
| 2026-04-06 | Dignam DeniseDirector | Grant or award A | +675 | – | 11,204 | Form 4 |
| 2026-01-05 | Milzcik Gregory FDirector | Grant or award A | +876 | – | 78,062 | Form 4 |
| 2026-01-05 | Richardson David JeffreyDirector | Grant or award A | +876 | – | 876 | Form 4 |
| 2026-01-05 | Olson Jon ADirector | Grant or award A | +876 | – | 20,679 | Form 4 |
| 2026-01-05 | Kong Peter T MDirector | Grant or award A | +876 | – | 100,885 | Form 4 |
| 2026-01-05 | Yeo Mui SungDirector | Grant or award A | +876 | – | 97,665 | Form 4 |
| 2026-01-05 | Dignam DeniseDirector | Grant or award A | +876 | – | 10,529 | Form 4 |
| 2025-12-18 | Richardson David JeffreyDirector | Gift G | −5,665 | – | 0 | Form 4 |
| 2025-12-18 | Richardson David JeffreyDirector | Gift G | +5,665 | – | 27,058 | Form 4 |
| 2025-12-01 | Kong Peter T MDirector | Grant or award A | +1,339 | – | 100,009 | Form 4 |
| 2025-12-01 | Wong Lester AInterim CEO and CFO | Grant or award A | +10,338 | – | 110,743 | Form 4 |
| 2025-11-20 | Chen Fusen ErnieDirector | Option exercise M | +1,920 | – | 1,161,725 | Form 4 |
| 2025-11-20 | Wong Lester AInterim CEO and CFO | Option exercise M | +356 | – | 100,405 | Form 4 |
| 2025-11-20 | Wong Nelson MunpunSenior Vice President | Option exercise M | +166 | – | 161,373 | Form 4 |
| 2025-11-20 | Chong Chan PinExecutive Vice President | Option exercise M | +174 | – | 52,195 | Form 4 |
| 2025-11-20 | Chylak Robert NestorSenior Vice President | Option exercise M | +142 | – | 30,126 | Form 4 |
| 2025-11-20 | Chylak Robert NestorSenior Vice President | Shares withheld for tax F | −41 | 39.03 | 30,085 | Form 4 |
| 2025-10-16 | Chylak Robert NestorSenior Vice President | Shares withheld for tax F | −674 | 39.74 | 29,984 | Form 4 |
| 2025-10-14 | Chen Fusen ErnieDirector, President and CEO | Option exercise M | +59,040 | – | 1,159,805 | Form 4 |
| 2025-10-14 | Wong Lester AChief Financial Officer | Option exercise M | +10,951 | – | 100,049 | Form 4 |
| 2025-10-14 | Wong Nelson MunpunSenior Vice President | Option exercise M | +5,115 | – | 161,207 | Form 4 |
| 2025-10-14 | Chong Chan PinExecutive Vice President | Option exercise M | +5,375 | – | 52,021 | Form 4 |
| 2025-10-14 | Chylak Robert NestorSenior Vice President | Option exercise M | +4,368 | – | 32,578 | Form 4 |
| 2025-10-14 | Chylak Robert NestorSenior Vice President | Shares withheld for tax F | −675 | 40.05 | 31,903 | Form 4 |
| 2025-10-14 | Chylak Robert NestorSenior Vice President | Shares withheld for tax F | −1,245 | 40.05 | 30,658 | Form 4 |
| 2025-10-13 | Wong Lester AChief Financial Officer | Grant or award A | +9,462 | – | 89,098 | Form 4 |
| 2025-10-13 | Wong Nelson MunpunSenior Vice President | Grant or award A | +8,559 | – | 156,092 | Form 4 |
| 2025-10-13 | Chylak Robert NestorSenior Vice President | Grant or award A | +7,982 | – | 28,210 | Form 4 |
| 2025-10-13 | Lim Zi YaoGeneral Counsel | Grant or award A | +7,597 | – | 24,714 | Form 4 |
| 2025-10-11 | Chylak Robert NestorSenior Vice President | Shares withheld for tax F | −610 | 38.18 | 20,228 | Form 4 |
| 2025-10-06 | Milzcik Gregory FDirector | Grant or award A | +1,081 | – | 77,186 | Form 4 |
| 2025-10-06 | Richardson David JeffreyDirector | Grant or award A | +1,081 | – | 5,665 | Form 4 |
| 2025-10-06 | Olson Jon ADirector | Grant or award A | +1,081 | – | 19,803 | Form 4 |
| 2025-10-06 | Kong Peter T MDirector | Grant or award A | +1,081 | – | 98,670 | Form 4 |
| 2025-10-06 | Yeo Mui SungDirector | Grant or award A | +1,081 | – | 96,789 | Form 4 |
| 2025-10-06 | Dignam DeniseDirector | Grant or award A | +1,081 | – | 9,653 | Form 4 |
| 2025-07-01 | Dignam DeniseDirector | Grant or award A | +1,260 | – | 8,572 | Form 4 |
| 2025-07-01 | Milzcik Gregory FDirector | Grant or award A | +1,260 | – | 76,105 | Form 4 |
| 2025-07-01 | Richardson David JeffreyDirector | Grant or award A | +1,260 | – | 4,584 | Form 4 |
| 2025-07-01 | Olson Jon ADirector | Grant or award A | +1,260 | – | 18,722 | Form 4 |
| 2025-07-01 | Kong Peter T MDirector | Grant or award A | +1,260 | – | 97,589 | Form 4 |
| 2025-07-01 | Yeo Mui SungDirector | Grant or award A | +1,260 | – | 95,708 | Form 4 |
| 2025-04-01 | Yeo Mui SungDirector | Grant or award A | +1,343 | – | 94,448 | Form 4 |
| 2025-04-01 | Richardson David JeffreyDirector | Grant or award A | +1,343 | – | 3,324 | Form 4 |
| 2025-04-01 | Olson Jon ADirector | Grant or award A | +1,343 | – | 17,462 | Form 4 |
| 2025-04-01 | Kong Peter T MDirector | Grant or award A | +1,343 | – | 96,329 | Form 4 |
| 2025-04-01 | Milzcik Gregory FDirector | Grant or award A | +1,343 | – | 74,845 | Form 4 |
| 2025-04-01 | Dignam DeniseDirector | Grant or award A | +1,343 | – | 7,312 | Form 4 |
| 2025-01-02 | Yeo Mui SungDirector | Grant or award A | +956 | – | 93,105 | Form 4 |
| 2025-01-02 | Richardson David JeffreyDirector | Grant or award A | +956 | – | 1,981 | Form 4 |
| 2025-01-02 | Olson Jon ADirector | Grant or award A | +956 | – | 16,119 | Form 4 |
| 2025-01-02 | Lim Chin HuDirector | Grant or award A | +956 | – | 60,657 | Form 4 |
| 2025-01-02 | Kong Peter T MDirector | Grant or award A | +956 | – | 94,986 | Form 4 |
| 2025-01-02 | Milzcik Gregory FDirector | Grant or award A | +956 | – | 73,502 | Form 4 |
| 2025-01-02 | Dignam DeniseDirector | Grant or award A | +956 | – | 5,969 | Form 4 |
| 2024-12-12 | Milzcik Gregory FDirector | Gift G | −5,046 | – | 72,546 | Form 4 |
| 2024-11-14 | Chylak Robert NestorSenior Vice President | Option exercise M | +101 | – | 32,258 | Form 4 |
| 2024-11-14 | Chylak Robert NestorSenior Vice President | Shares withheld for tax F | −29 | 45.61 | 32,229 | Form 4 |
| 2024-11-14 | Wong Nelson MunPunSenior Vice President | Option exercise M | +128 | – | 207,533 | Form 4 |
| 2024-11-14 | Chong Chan PinExecutive Vice President | Option exercise M | +128 | – | 91,646 | Form 4 |
| 2024-11-14 | Chen Fusen ErnieDirector, President and CEO | Option exercise M | +1,219 | – | 1,180,765 | Form 4 |
| 2024-11-14 | Wong Lester AChief Financial Officer | Option exercise M | +260 | – | 139,636 | 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.