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klic-20260204KULICKE & SOFFA INDUSTRIES INC0000056978falseSingapore00000569782026-02-042026-02-040000056978dei:OtherAddressMember2026-02-042026-02-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): February 4, 2026

KULICKE AND SOFFA INDUSTRIES, INC.

(Exact name of registrant as specified in its charter)

Pennsylvania 000-00121 23-1498399 (State or Other Jurisdiction of Incorporation) (Commission File Number) (I.R.S. Employer Identification No.)

23A Serangoon North Avenue 5, #01-01, Singapore 554369 1005 Virginia Dr., Fort Washington, PA 19034 (Address of Principal Executive Offices and Zip Code)

Registrant’s telephone number, including area code: (215) 784-6000 N/A (Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common Stock, Without Par ValueKLICThe Nasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02     Results of Operations and Financial Condition. On February 4, 2026, Kulicke and Soffa Industries, Inc. (the “Company”) issued a press release with respect to its financial results for its first fiscal quarter ended January 3, 2026. A copy of this press release is furnished as Exhibit 99.1 to this report, and is incorporated by reference into this Item 2.02 as if fully set forth herein. The information in this report, furnished under “Item 2.02 Results of Operations and Financial Condition,” shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Description 99.1Press Release dated February 4, 2026

104Inline XBRL for the cover page of this Current Report on Form 8‑K.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

KULICKE AND SOFFA INDUSTRIES, INC.

Date: February 4, 2026By:/s/ LESTER WONG Name:Lester Wong Title:Executive Vice President, Interim Chief Executive Officer and Chief Financial Officer (principal executive officer, principal financial officer and principal accounting officer)

klic-20251119KULICKE & SOFFA INDUSTRIES INC0000056978falseSingapore00000569782025-11-192025-11-190000056978dei:OtherAddressMember2025-11-192025-11-19

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): November 19, 2025

KULICKE AND SOFFA INDUSTRIES, INC.

(Exact name of registrant as specified in its charter)

Pennsylvania 000-00121 23-1498399 (State or Other Jurisdiction of Incorporation) (Commission File Number) (I.R.S. Employer Identification No.)

23A Serangoon North Avenue 5, #01-01, Singapore 554369 1005 Virginia Dr., Fort Washington, PA 19034 (Address of Principal Executive Offices and Zip Code)

Registrant’s telephone number, including area code: (215) 784-6000 N/A (Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common Stock, Without Par ValueKLICThe Nasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02     Results of Operations and Financial Condition. On November 19, 2025, Kulicke and Soffa Industries, Inc. (the “Company”) issued a press release with respect to its financial results for its fourth fiscal quarter ended October 4, 2025. A copy of this press release is furnished as Exhibit 99.1 to this report, and is incorporated by reference into this Item 2.02 as if fully set forth herein. The information in this report, furnished under “Item 2.02 Results of Operations and Financial Condition,” shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Description 99.1Press Release dated November 19, 2025

104Inline XBRL for the cover page of this Current Report on Form 8‑K.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

KULICKE AND SOFFA INDUSTRIES, INC.

Date: November 19, 2025By:/s/ LESTER WONG Name:Lester Wong Title:Executive Vice President, Interim Chief Executive Officer and Chief Financial Officer (principal executive officer, principal financial officer and principal accounting officer)