X0609 4 2026-10-16 0 0000056978 KULICKE & SOFFA INDUSTRIES INC KLIC 0001887782 Chylak Robert Nestor false 1005 VIRGINIA DRIVE FORT WASHINGTON PA 19034 0 1 0 0 Senior Vice President 0 Common Stock 2026-10-16 4 F 0 1029 78.63 D 32104 D Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of 2,365 restricted stock units (RSUs) on October 16, 2026. The RSUs were granted on October 16, 2024, as part of an award of 7,094 RSUs. The shares withheld were not issued to or sold by the Reporting Person. Zi Yao Lim, Attorney-in-Fact for Robert Nestor Chylak 2026-10-19