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): October 2, 2012

KULICKE AND SOFFA INDUSTRIES, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (215) 784-6000

(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):

On October 2, 2012, the Management Development and Compensation Committee of the Board of Directors (the “Committee”) of Kulicke and Soffa Industries, Inc. (the “Company”) granted performance share unit awards (“PSUs”) and time-vested restricted stock unit awards (“RSUs”) under the Company’s 2009 Equity Plan, as amended (the “2009 Plan”), to certain of its employees, including the following executive officers in the amounts indicated below:

With the exception of the RSUs granted to Mr. Mak, one-third of RSUs will vest equally on each of the three anniversaries of the grant date, if the officer is employed by the Company on such dates. The RSUs granted to Mr. Mak will vest on September 30, 2013.  If an officer is involuntarily terminated without cause (as defined in the 2009 Plan) the Committee may, in its sole discretion, upon the occurrence of such event, accelerate the vesting of a pro rata portion of the RSUs which would otherwise vest on the next anniversary of the grant date.  The pro rata portion will be calculated based on vesting months as measured from the day of the month on which the grant was made to the corresponding day of each succeeding month.  The vesting date for this purpose shall be the date of the Committee’s decision to accelerate vesting.  There is no entitlement to such accelerated vesting and the Committee expects to exercise such discretion only in limited and special circumstances.  If the officer terminates employment for any other reason, any unvested RSUs are forfeited.

The vesting of PSUs is tied to total shareholder return relative to the companies comprising the Philadelphia Semiconductor Index (the “Index”), measured over a three-year performance measurement period.  These PSUs will vest on the third anniversary of the grant date at between zero and 200% based on total shareholder return relative to the Index.  If a participant retires, dies or becomes disabled before the end of the performance measurement period, the PSUs will vest pro rata based on the participant’s length of employment during the performance period, to the extent the performance goals are met for the performance period.  However, in the event a participant is involuntarily terminated without cause (as defined in the 2009 Plan), the Committee may, in its sole discretion, upon the occurrence of such event, entitle the participant to a pro rata portion of the PSUs the participant would otherwise have earned based on the actual achievement of the performance goals as determined at the end of the performance period had he or she remained employed to the end of the performance period.  The pro rata portion will be calculated based on vesting months as measured from the day of the month on which the grant was made to the corresponding day of each succeeding month.  The vesting date for this purpose shall be the date of the Committee’s decision to accelerate vesting.  There is no entitlement to such accelerated vesting and the Committee expects to exercise such discretion only in limited and special circumstances.

Additionally, the Committee decided that Mr. Guilmart will also receive “strategic” PSUs (“Strategic PSUs”) at a date to be determined. The vesting of these Strategic PSUs is expected to be tied to the advanced packaging business of the Company; however, the performance metrics have not yet been determined.

The foregoing summary of the 2009 Plan is qualified in its entirety by reference to the actual terms of the 2009 Plan, the forms of Officer Performance Share Award Agreement and the forms of Officer Restricted Share Unit Award Agreement, included hereto as Exhibits 10.1 (the amendments to the 2009 Plan included hereto as Exhibits 10.2 and 10.3), 10.4 and 10.5, respectively.  For additional information regarding the 2009 Plan, refer to “Compensation of Executive Officers” in the Company’s Proxy Statement on Schedule 14A as filed with the Securities and Exchange Commission on December 30, 2010.

(d) Exhibits.

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.

EXHIBIT INDEX