Robert Nestor Chylak - 11 Oct 2026 Form 4 Insider Report for KULICKE & SOFFA INDUSTRIES INC (KLIC)

Reporting relationship: Senior Vice President
Issuer ticker: KLIC
Reported as of: 11 Oct 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 13 Oct 2026, 09:37:55 UTC
Prior SEC filing: 11 Feb 2026
Next SEC filing: 15 Oct 2026
Source filing: View source filing
Reporting owner signature: Zi Yao Lim, Attorney-in-Fact for Robert Nestor Chylak

Filing notes and source

Key filing fact

Robert Nestor Chylak filed Form 4 for KULICKE & SOFFA INDUSTRIES INC (KLIC) on 13 Oct 2026.

Key facts

This page summarizes Robert Nestor Chylak's Form 4 filing for KULICKE & SOFFA INDUSTRIES INC (KLIC).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 13 Oct 2026, 09:37.

Change

Previous filing in this sequence was filed on 11 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001887782 Primary reporting owner

Chylak Robert Nestor

Relationship: Senior Vice President
Address: 1005 VIRGINIA DRIVE, FORT WASHINGTON
Signature: Zi Yao Lim, Attorney-in-Fact for Robert Nestor Chylak
Signature date: 13 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

KLIC transaction

Common Stock

Options Exercise

Transaction value
Shares: +9,498
Change %: +41%
Price: $0.000000^*
Shares after: 32,485
Date: 11 Oct 2026
Ownership: Direct
Footnotes: F1

KLIC transaction

Common Stock

Tax liability

Transaction value
Shares: -3,338
Change %: -10%
Price: $47.44^*
Shares after: 29,147
Date: 11 Oct 2026
Ownership: Direct
Footnotes: F2

KLIC transaction

Common Stock

Tax liability

Transaction value
Shares: -610
Change %: -2.1%
Price: $47.44^*
Shares after: 28,537
Date: 11 Oct 2026
Ownership: Direct
Footnotes: F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

KLIC transaction Derivative

Performance Share Units

Options Exercise

Transaction value
Shares: -9,498
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 11 Oct 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9,498
Exercise price
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Performance Share Units (PSUs) awarded October 11, 2023, achieved a 148% 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 payout was certified, and shares issued on October 11, 2026. Each PSU is convertible to one share of common stock.

Footnote F2

Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with issuance of 9,498 shares of common stock arising from payout under Performance Share Units (PSUs) awarded on October 11, 2023. The payout was certified, and the shares were issued on October 11, 2026, each PSU convertible into one share of common stock. These shares that were withheld were not issued to or sold by the Reporting Person.

Footnote F3

Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of 2,139 restricted stock units (RSUs) on October 11, 2026. This RSU vesting is in connection to an RSU award granted on October 11, 2023 of 6,417 shares. These shares that were withheld were not issued to or sold by the Reporting Person.