KLIC · Insider Trading
Kulicke & Soffa Industries Inc
Every open-market purchase and sale reported by KLIC officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-19 | Robert Nestor Chylak | Senior Vice President | F | −1,029 | −$80.91K |
| 2026-10-16 | Robert Nestor Chylak | Senior Vice President | A | +5,753 | — |
| 2026-10-16 | Zi Yao Lim | General Counsel | A | +4,071 | — |
| 2026-10-16 | Lester A Wong | CFO | A | +6,424 | — |
| 2026-10-16 | Nelson Munpun Wong | Senior Vice President | A | +5,734 | — |
| 2026-10-16 | Rajendra K Talluri | CEO | A | +28,398 | — |
| 2026-10-15 | Robert Nestor Chylak | Senior Vice President | F | −1,157 | −$102.44K |
| 2026-10-13 | Nelson Munpun Wong | Senior Vice President | M | +10,986 | — |
| 2026-10-13 | Robert Nestor Chylak | Senior Vice President | MIXED | +5,550 | −$187.29K |
| 2026-10-13 | Lester A Wong | CFO | M | +19,225 | — |
| 2026-10-07 | Jon A Olson | Director | A | +493 | — |
| 2026-10-07 | Denise Dignam | Director | A | +493 | — |
| 2026-10-07 | Peter T M Kong | Director | A | +493 | — |
| 2026-10-07 | Mui Sung Yeo | Director | A | +493 | — |
| 2026-10-07 | David Jeffrey Richardson | Director | A | +493 | — |
| 2026-10-07 | Gregory F Milzcik | Director | A | +493 | — |
| 2026-09-02 | Lester A Wong | CFO | A | +6,038 | — |
| 2026-09-01 | Rajendra K Talluri | CEO | A | +89,697 | — |
| 2026-07-08 | Peter T M Kong | Director | A | +407 | — |
| 2026-07-08 | Jon A Olson | Director | A | +407 | — |
| 2026-07-08 | Gregory F Milzcik | Director | A | +407 | — |
| 2026-07-08 | David Jeffrey Richardson | Director | A | +407 | — |
| 2026-07-08 | Denise Dignam | Director | A | +407 | — |
| 2026-07-08 | Mui Sung Yeo | Director | A | +407 | — |
| 2026-06-22 | Lester A Wong | Interim CEO and CFO | Sell | −60,000 | −$7.30M |
| 2026-06-15 | Nelson Munpun Wong | Senior Vice President | Sell | −15,000 | −$1.71M |
| 2026-06-12 | Peter T M Kong | Director | Sell | −1,551 | −$170.61K |
| 2026-05-21 | Mui Sung Yeo | Director | Sell | −20,000 | −$2.00M |
| 2026-05-12 | Zi Yao Lim | General Counsel | Sell | −1,500 | −$154.46K |
| 2026-04-09 | Peter T M Kong | Director | A | +675 | — |
| 2026-04-09 | Mui Sung Yeo | Director | A | +675 | — |
| 2026-04-09 | Denise Dignam | Director | A | +675 | — |
| 2026-04-09 | Gregory F Milzcik | Director | A | +675 | — |
| 2026-04-09 | David Jeffrey Richardson | Director | A | +675 | — |
| 2026-04-09 | Jon A Olson | Director | A | +675 | — |
| 2026-02-27 | David Jeffrey Richardson | Director | Sell | −9,364 | −$676.03K |
| 2026-02-17 | Mui Sung Yeo | Director | Sell | −19,143 | −$1.38M |
| 2026-02-11 | Zi Yao Lim | General Counsel | Sell | −1,000 | −$71.54K |
| 2026-02-11 | Robert Nestor Chylak | Senior Vice President | Sell | −7,098 | −$520.12K |
| 2026-02-09 | Nelson Munpun Wong | Senior Vice President | Sell | −39,800 | −$2.43M |
| 2026-01-26 | Nelson Munpun Wong | Senior Vice President | Sell | −200 | −$12.00K |
| 2026-01-14 | Nelson Munpun Wong | Senior Vice President | Sell | −30,000 | −$1.70M |
| 2026-01-07 | Jon A Olson | Director | A | +876 | — |
| 2026-01-07 | Mui Sung Yeo | Director | A | +876 | — |
| 2026-01-07 | David Jeffrey Richardson | Director | A | +876 | — |
| 2026-01-07 | Gregory F Milzcik | Director | A | +876 | — |
| 2026-01-07 | Peter T M Kong | Director | A | +876 | — |
| 2026-01-07 | Denise Dignam | Director | A | +876 | — |
| 2025-12-19 | David Jeffrey Richardson | Director | G | — | — |
| 2025-12-10 | Nelson Munpun Wong | Senior Vice President | Sell | −5,004 | −$250.53K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Fusen Ernie Chen | President and CEO | 1,408,794 | $106.36M |
| Rajendra K Talluri | CEO | 118,095 | $8.92M |
| Peter T M Kong | Director | 100,909 | $7.62M |
| Nelson Munpun Wong | Senior Vice President | 88,089 | $6.65M |
| Lester A Wong | CFO | 82,430 | $6.22M |
| Gregory F Milzcik | Director | 79,637 | $6.01M |
| Chin Hu Lim | Director | 60,657 | $4.58M |
| Mui Sung Yeo | Director | 60,097 | $4.54M |
| Chan Pin Chong | Executive Vice President | 52,195 | $3.94M |
| Robert Nestor Chylak | Senior Vice President | 32,104 | $2.42M |
| Zi Yao Lim | General Counsel | 25,285 | $1.91M |
| Jon A Olson | Director | 22,254 | $1.68M |
| David Jeffrey Richardson | Director | 20,145 | $1.52M |
| Denise Dignam | Director | 12,104 | $913.85K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the KLIC quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.