KLIC

insider transactions

KULICKE & SOFFA INDUSTRIES INC — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Net shares · 365d

-162.6K

0 buy · 162.6K sell

Net value · 365d

-$10.2M

$0 in · $10.2M out

Sentiment · 365d

Net selling

0% buying · 100% selling

Open-market trades · 365d

0 buy · 162.6K sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Sell·S
May 20, 26

Yeo Mui Sung

Director

$2.0M

20.0K sh · $100.00

Own -25%
Grant·A
Apr 6, 26

Yeo Mui Sung

Director

$0

675 sh

Own +1%
Grant·A
Apr 6, 26

Kong Peter T M

Director

$0

675 sh

Own +1%
Grant·A
Apr 6, 26

Olson Jon A

Director

$0

675 sh

Own +3%
Grant·A
Apr 6, 26

RICHARDSON DAVID JEFFREY

Director

$0

675 sh

Own +77%
Grant·A
Apr 6, 26

Milzcik Gregory F

Director

$0

675 sh

Own +1%
Grant·A
Apr 6, 26

Dignam Denise

Director

$0

675 sh

Own +6%
Sell·S
Feb 25, 26

RICHARDSON DAVID JEFFREY

Director

$676.1K

9.4K sh · $72.20

Own -35%
Sell·S
Feb 13, 26

Yeo Mui Sung

Director

$1.4M

19.1K sh · $71.98

Own -20%
Sell·S
Feb 10, 26

Chylak Robert Nestor KEY

Senior Vice President

$520.1K

7.1K sh · $73.28

Own -24%
Sell·S
Feb 9, 26

Lim Zi Yao

General Counsel

$71.5K

1.0K sh · $71.54

Own -4%
Sell·S
Feb 5, 26

Wong Nelson MunPun KEY

Senior Vice President · 10b5-1

$2.4M

39.8K sh · $60.98

Own -32%
Sell·S
Jan 22, 26

Wong Nelson MunPun KEY

Senior Vice President · 10b5-1

$12.0K

200 sh · $60.00

Own -0%
Sell·S
Jan 12, 26

Wong Nelson MunPun KEY

Senior Vice President · 10b5-1

$1.7M

30.0K sh · $56.53

Own -19%
Grant·A
Jan 5, 26

Kong Peter T M

Director

$0

876 sh

Own +1%
Grant·A
Jan 5, 26

Milzcik Gregory F

Director

$0

876 sh

Own +1%
Grant·A
Jan 5, 26

Dignam Denise

Director

$0

876 sh

Own +9%
Grant·A
Jan 5, 26

Olson Jon A

Director

$0

876 sh

Own +4%
Grant·A
Jan 5, 26

RICHARDSON DAVID JEFFREY

Director

$0

876 sh

Own New
Grant·A
Jan 5, 26

Yeo Mui Sung

Director

$0

876 sh

Own +1%
Other·G
Dec 18, 25

RICHARDSON DAVID JEFFREY

Director

$0

5.7K sh

Own -17%
Other·G
Dec 18, 25

RICHARDSON DAVID JEFFREY

Director

$0

5.7K sh

Own -100%
Sell·S
Dec 8, 25

Wong Nelson MunPun KEY

Senior Vice President

$250.6K

5.0K sh · $50.07

Own -3%
Sell·S
Dec 2, 25

Lim Zi Yao

General Counsel

$45.0K

1.0K sh · $45.00

Own -4%
Grant·A
Dec 1, 25

Wong Lester A KEY

Interim CEO and CFO

$0

10.3K sh

Own +10%
Grant·A
Dec 1, 25

Kong Peter T M

Director

$0

1.3K sh

Own +1%
Exercise·M
Nov 20, 25

Wong Lester A KEY

Interim CEO and CFO

$0

356 sh

Own New
Exercise·M
Nov 20, 25

Wong Lester A KEY

Interim CEO and CFO

$0

356 sh

Own +0%
Exercise·M
Nov 20, 25

Chong Chan Pin KEY

Executive Vice President

$0

174 sh

Own New
Exercise·M
Nov 20, 25

Chong Chan Pin KEY

Executive Vice President

$0

174 sh

Own +0%
Exercise·M
Nov 20, 25

Wong Nelson MunPun KEY

Senior Vice President

$0

166 sh

Own New
Exercise·M
Nov 20, 25

Wong Nelson MunPun KEY

Senior Vice President

$0

166 sh

Own +0%
Exercise·M
Nov 20, 25

CHEN FUSEN ERNIE

Director

$0

1.9K sh

Own New
Exercise·M
Nov 20, 25

CHEN FUSEN ERNIE

Director

$0

1.9K sh

Own +0%
Exercise·M
Nov 20, 25

Chylak Robert Nestor KEY

Senior Vice President

$0

142 sh

Own New
Exercise·M
Nov 20, 25

Chylak Robert Nestor KEY

Senior Vice President

$0

142 sh

Own +0%
Other·F
Nov 20, 25

Chylak Robert Nestor KEY

Senior Vice President

$1.6K

41 sh · $39.03

Own -0%
Other·F
Oct 16, 25

Chylak Robert Nestor KEY

Senior Vice President

$26.8K

674 sh · $39.74

Own -2%
Exercise·M
Oct 14, 25

Chong Chan Pin KEY

Executive Vice President

$0

5.4K sh

Own New
Exercise·M
Oct 14, 25

Chong Chan Pin KEY

Executive Vice President

$0

5.4K sh

Own +12%
Exercise·M
Oct 14, 25

Chylak Robert Nestor KEY

Senior Vice President

$0

4.4K sh

Own New
Other·F
Oct 14, 25

Chylak Robert Nestor KEY

Senior Vice President

$49.9K

1.2K sh · $40.05

Own -4%
Exercise·M
Oct 14, 25

Chylak Robert Nestor KEY

Senior Vice President

$0

4.4K sh

Own +15%
Other·F
Oct 14, 25

Chylak Robert Nestor KEY

Senior Vice President

$27.0K

675 sh · $40.05

Own -2%
Exercise·M
Oct 14, 25

Wong Nelson MunPun KEY

Senior Vice President

$0

5.1K sh

Own New
Exercise·M
Oct 14, 25

Wong Nelson MunPun KEY

Senior Vice President

$0

5.1K sh

Own +3%
Exercise·M
Oct 14, 25

Wong Lester A KEY

Chief Financial Officer

$0

11.0K sh

Own New
Exercise·M
Oct 14, 25

Wong Lester A KEY

Chief Financial Officer

$0

11.0K sh

Own +12%
Exercise·M
Oct 14, 25

CHEN FUSEN ERNIE KEY

President and CEO

$0

59.0K sh

Own New
Exercise·M
Oct 14, 25

CHEN FUSEN ERNIE KEY

President and CEO

$0

59.0K sh

Own +5%
Grant·A
Oct 13, 25

Lim Zi Yao

General Counsel

$0

7.6K sh

Own +44%
Grant·A
Oct 13, 25

Chylak Robert Nestor KEY

Senior Vice President

$0

8.0K sh

Own +39%
Grant·A
Oct 13, 25

Wong Nelson MunPun KEY

Senior Vice President

$0

8.6K sh

Own +6%
Grant·A
Oct 13, 25

Wong Lester A KEY

Chief Financial Officer

$0

9.5K sh

Own +12%
Other·F
Oct 11, 25

Chylak Robert Nestor KEY

Senior Vice President

$23.3K

610 sh · $38.18

Own -3%
Grant·A
Oct 6, 25

Milzcik Gregory F

Director

$0

1.1K sh

Own +1%
Grant·A
Oct 6, 25

Kong Peter T M

Director

$0

1.1K sh

Own +1%
Grant·A
Oct 6, 25

Yeo Mui Sung

Director

$0

1.1K sh

Own +1%
Grant·A
Oct 6, 25

Dignam Denise

Director

$0

1.1K sh

Own +13%
Grant·A
Oct 6, 25

Olson Jon A

Director

$0

1.1K sh

Own +6%
Grant·A
Oct 6, 25

RICHARDSON DAVID JEFFREY

Director

$0

1.1K sh

Own +24%
Sell·S
Aug 12, 25

Wong Nelson MunPun KEY

Senior Vice President

$1.1M

30.0K sh · $37.07

Own -17%
Grant·A
Jul 1, 25

Kong Peter T M

Director

$0

1.3K sh

Own +1%
Grant·A
Jul 1, 25

Yeo Mui Sung

Director

$0

1.3K sh

Own +1%
Grant·A
Jul 1, 25

Milzcik Gregory F

Director

$0

1.3K sh

Own +2%
Grant·A
Jul 1, 25

RICHARDSON DAVID JEFFREY

Director

$0

1.3K sh

Own +38%
Grant·A
Jul 1, 25

Dignam Denise

Director

$0

1.3K sh

Own +17%
Grant·A
Jul 1, 25

Olson Jon A

Director

$0

1.3K sh

Own +7%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
May 20, 2026	Yeo Mui Sung	Director	Sell S	20.0K	-25%	$100.00	$2.0M
Apr 6, 2026	Yeo Mui Sung	Director	Grant A	675	+1%	—	$0
Apr 6, 2026	Kong Peter T M	Director	Grant A	675	+1%	—	$0
Apr 6, 2026	Olson Jon A	Director	Grant A	675	+3%	—	$0
Apr 6, 2026	RICHARDSON DAVID JEFFREY	Director	Grant A	675	+77%	—	$0
Apr 6, 2026	Milzcik Gregory F	Director	Grant A	675	+1%	—	$0
Apr 6, 2026	Dignam Denise	Director	Grant A	675	+6%	—	$0
Feb 25, 2026	RICHARDSON DAVID JEFFREY	Director	Sell S	9.4K	-35%	$72.20	$676.1K
Feb 13, 2026	Yeo Mui Sung	Director	Sell S	19.1K	-20%	$71.98	$1.4M
Feb 10, 2026	Chylak Robert Nestor KEY	Senior Vice President	Sell S	7.1K	-24%	$73.28	$520.1K
Feb 9, 2026	Lim Zi Yao	General Counsel	Sell S	1.0K	-4%	$71.54	$71.5K
Feb 5, 2026	Wong Nelson MunPun KEY 10b5-1	Senior Vice President	Sell S	39.8K	-32%	$60.98	$2.4M
Jan 22, 2026	Wong Nelson MunPun KEY 10b5-1	Senior Vice President	Sell S	200	-0%	$60.00	$12.0K
Jan 12, 2026	Wong Nelson MunPun KEY 10b5-1	Senior Vice President	Sell S	30.0K	-19%	$56.53	$1.7M
Jan 5, 2026	Kong Peter T M	Director	Grant A	876	+1%	—	$0
Jan 5, 2026	Milzcik Gregory F	Director	Grant A	876	+1%	—	$0
Jan 5, 2026	Dignam Denise	Director	Grant A	876	+9%	—	$0
Jan 5, 2026	Olson Jon A	Director	Grant A	876	+4%	—	$0
Jan 5, 2026	RICHARDSON DAVID JEFFREY	Director	Grant A	876	New	—	$0
Jan 5, 2026	Yeo Mui Sung	Director	Grant A	876	+1%	—	$0
Dec 18, 2025	RICHARDSON DAVID JEFFREY	Director	Other G	5.7K	-17%	—	$0
Dec 18, 2025	RICHARDSON DAVID JEFFREY	Director	Other G	5.7K	-100%	—	$0
Dec 8, 2025	Wong Nelson MunPun KEY	Senior Vice President	Sell S	5.0K	-3%	$50.07	$250.6K
Dec 2, 2025	Lim Zi Yao	General Counsel	Sell S	1.0K	-4%	$45.00	$45.0K
Dec 1, 2025	Wong Lester A KEY	Interim CEO and CFO	Grant A	10.3K	+10%	—	$0
Dec 1, 2025	Kong Peter T M	Director	Grant A	1.3K	+1%	—	$0
Nov 20, 2025	Wong Lester A KEY	Interim CEO and CFO	Exercise M	356	New	—	$0
Nov 20, 2025	Wong Lester A KEY	Interim CEO and CFO	Exercise M	356	+0%	—	$0
Nov 20, 2025	Chong Chan Pin KEY	Executive Vice President	Exercise M	174	New	—	$0
Nov 20, 2025	Chong Chan Pin KEY	Executive Vice President	Exercise M	174	+0%	—	$0
Nov 20, 2025	Wong Nelson MunPun KEY	Senior Vice President	Exercise M	166	New	—	$0
Nov 20, 2025	Wong Nelson MunPun KEY	Senior Vice President	Exercise M	166	+0%	—	$0
Nov 20, 2025	CHEN FUSEN ERNIE	Director	Exercise M	1.9K	New	—	$0
Nov 20, 2025	CHEN FUSEN ERNIE	Director	Exercise M	1.9K	+0%	—	$0
Nov 20, 2025	Chylak Robert Nestor KEY	Senior Vice President	Exercise M	142	New	—	$0
Nov 20, 2025	Chylak Robert Nestor KEY	Senior Vice President	Exercise M	142	+0%	—	$0
Nov 20, 2025	Chylak Robert Nestor KEY	Senior Vice President	Other F	41	-0%	$39.03	$1.6K
Oct 16, 2025	Chylak Robert Nestor KEY	Senior Vice President	Other F	674	-2%	$39.74	$26.8K
Oct 14, 2025	Chong Chan Pin KEY	Executive Vice President	Exercise M	5.4K	New	—	$0
Oct 14, 2025	Chong Chan Pin KEY	Executive Vice President	Exercise M	5.4K	+12%	—	$0
Oct 14, 2025	Chylak Robert Nestor KEY	Senior Vice President	Exercise M	4.4K	New	—	$0
Oct 14, 2025	Chylak Robert Nestor KEY	Senior Vice President	Other F	1.2K	-4%	$40.05	$49.9K
Oct 14, 2025	Chylak Robert Nestor KEY	Senior Vice President	Exercise M	4.4K	+15%	—	$0
Oct 14, 2025	Chylak Robert Nestor KEY	Senior Vice President	Other F	675	-2%	$40.05	$27.0K
Oct 14, 2025	Wong Nelson MunPun KEY	Senior Vice President	Exercise M	5.1K	New	—	$0
Oct 14, 2025	Wong Nelson MunPun KEY	Senior Vice President	Exercise M	5.1K	+3%	—	$0
Oct 14, 2025	Wong Lester A KEY	Chief Financial Officer	Exercise M	11.0K	New	—	$0
Oct 14, 2025	Wong Lester A KEY	Chief Financial Officer	Exercise M	11.0K	+12%	—	$0
Oct 14, 2025	CHEN FUSEN ERNIE KEY	President and CEO	Exercise M	59.0K	New	—	$0
Oct 14, 2025	CHEN FUSEN ERNIE KEY	President and CEO	Exercise M	59.0K	+5%	—	$0
Oct 13, 2025	Lim Zi Yao	General Counsel	Grant A	7.6K	+44%	—	$0
Oct 13, 2025	Chylak Robert Nestor KEY	Senior Vice President	Grant A	8.0K	+39%	—	$0
Oct 13, 2025	Wong Nelson MunPun KEY	Senior Vice President	Grant A	8.6K	+6%	—	$0
Oct 13, 2025	Wong Lester A KEY	Chief Financial Officer	Grant A	9.5K	+12%	—	$0
Oct 11, 2025	Chylak Robert Nestor KEY	Senior Vice President	Other F	610	-3%	$38.18	$23.3K
Oct 6, 2025	Milzcik Gregory F	Director	Grant A	1.1K	+1%	—	$0
Oct 6, 2025	Kong Peter T M	Director	Grant A	1.1K	+1%	—	$0
Oct 6, 2025	Yeo Mui Sung	Director	Grant A	1.1K	+1%	—	$0
Oct 6, 2025	Dignam Denise	Director	Grant A	1.1K	+13%	—	$0
Oct 6, 2025	Olson Jon A	Director	Grant A	1.1K	+6%	—	$0
Oct 6, 2025	RICHARDSON DAVID JEFFREY	Director	Grant A	1.1K	+24%	—	$0
Aug 12, 2025	Wong Nelson MunPun KEY	Senior Vice President	Sell S	30.0K	-17%	$37.07	$1.1M
Jul 1, 2025	Kong Peter T M	Director	Grant A	1.3K	+1%	—	$0
Jul 1, 2025	Yeo Mui Sung	Director	Grant A	1.3K	+1%	—	$0
Jul 1, 2025	Milzcik Gregory F	Director	Grant A	1.3K	+2%	—	$0
Jul 1, 2025	RICHARDSON DAVID JEFFREY	Director	Grant A	1.3K	+38%	—	$0
Jul 1, 2025	Dignam Denise	Director	Grant A	1.3K	+17%	—	$0
Jul 1, 2025	Olson Jon A	Director	Grant A	1.3K	+7%	—	$0

About KLIC insider trading

This page tracks insider transactions for KULICKE & SOFFA INDUSTRIES INC (KLIC) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.