Lester A. Wong - 13 Oct 2025 Form 4 Insider Report for KULICKE & SOFFA INDUSTRIES INC (KLIC)

Role: Chief Financial Officer
Signature: Zi Yao Lim, Attorney-in-Fact for Lester A. Wong
Issuer symbol: KLIC
Transactions as of: 13 Oct 2025
Transactions value $: $0
Form type: 4
Filing time: 15 Oct 2025, 14:48:40 UTC
Previous filing: 22 Nov 2024
Next filing: 24 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Wong Lester A	Chief Financial Officer	23A SERANGOON NORTH AVENUE 5, #01-01, SINGAPORE, SINGAPORE	Zi Yao Lim, Attorney-in-Fact for Lester A. Wong	15 Oct 2025	0001529306

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	KLIC	Common Stock	Award	$0	+9.46K	+11.88%	$0.00	89.1K	13 Oct 2025	Direct	F1
transaction	KLIC	Common Stock	Options Exercise	$0	+11K	+12.29%	$0.00	100K	14 Oct 2025	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	KLIC	Performance Share Units	Options Exercise	$0	-11K	-100%	$0.00	0	14 Oct 2025	Common Stock	11K		Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	One-third of the shares granted vest on each anniversary of the date of grant.
F2	Performance Share Units (PSUs) awarded October 14, 2022, achieved a 82% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three-year period. The pay-out was certified, and shares issued on October 14, 2025. Each PSU is convertible to one share of common stock.

Content

One-third of the shares granted vest on each anniversary of the date of grant.

Performance Share Units (PSUs) awarded October 14, 2022, achieved a 82% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three-year period. The pay-out was certified, and shares issued on October 14, 2025. Each PSU is convertible to one share of common stock.