Kulicke & Soffa withholds 1,029 shares for Chylak taxes

The withholding was tied to the vesting of part of a 7,094-RSU award granted in 2024.

Rhea-AI Filing Summary

Kulicke & Soffa Industries Inc. Senior Vice President Robert Nestor Chylak had 1,029 common shares withheld on October 16, 2026, to satisfy tax withholding obligations tied to vesting of 2,365 restricted stock units (RSUs); the reported price was $78.63 per share. The withheld shares were not issued to or sold by him. He directly held 32,104 shares afterward. The RSUs were from a 7,094-unit award granted October 16, 2024.

Insider Trade Summary

Tax Withholding: 1,029 shares

Tax Withholding 1 txn

Insider Chylak Robert Nestor

Role Senior Vice President

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	1,029	$78.63	$81K

Holdings After Transaction: Common Stock — 32,104 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Common shares withheld: 1,029 shares Reported per-share price: $78.63 per share Direct shares held after transaction: 32,104 shares +2 more

5 metrics

Common shares withheld 1,029 shares October 16, 2026; for tax withholding obligations

Reported per-share price $78.63 per share Shares withheld on October 16, 2026

Direct shares held after transaction 32,104 shares After the October 16, 2026 transaction

Restricted stock units vested 2,365 RSUs October 16, 2026

RSUs in award 7,094 RSUs Granted October 16, 2024

Key Terms

restricted stock units (RSUs), tax withholding obligations, vesting

3 terms

restricted stock units (RSUs) financial

"vesting of 2,365 restricted stock units (RSUs)"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

tax withholding obligations financial

"to satisfy tax withholding obligations"

vesting financial

"in connection with the vesting of 2,365 restricted stock units"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

Were the withheld KLIC shares sold by Robert Nestor Chylak?

No. The issuer withheld the 1,029 shares to satisfy tax withholding obligations, and the footnote states they were not issued to or sold by Robert Nestor Chylak.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/19/2026 - 09:25 AM EDT Accepted by SEC EDGAR 10/19/2026 - 09:24 AM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Chylak Robert Nestor

(Last) (First) (Middle)

1005 VIRGINIA DRIVE

(Street)

FORT WASHINGTON PENNSYLVANIA 19034

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
KULICKE & SOFFA INDUSTRIES INC [ KLIC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Senior Vice President

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/16/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/16/2026		F(1)		1,029	D	$78.63	32,104	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

Remarks:

	Zi Yao Lim, Attorney-in-Fact for Robert Nestor Chylak	10/19/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)