Document:

Fiscal Year 2009 Performance Bonus Plan

 Exhibit 10.41 
 NOTE: Portions of this Exhibit are the subject of a Confidential Treatment Request by KLA-Tencor Corporation to the Securities and Exchange Commission (the “SEC”). Such portions have been redacted and are marked with a
“**” in place of the redacted language. The redacted information has been filed separately with the SEC. 
 KLA-TENCOR 

 FY09 PERFORMANCE BONUS PLAN 
 (Annual Executive Bonus) 
 Plan Summary 
 The
KLA-Tencor Performance Bonus Plan (the Plan) is intended to motivate senior executives to achieve short-term and long-term corporate objectives by providing a competitive bonus for target performance and the appropriate upside opportunity to reward
outstanding performance. 
 Plan Period 
 This Plan is
effective for the fiscal year period from July 1 through June 30, 2009. Newly eligible employees (e.g. employees promoted to an incentive-eligible position for the first time or a new hire) must be in an eligible position on or before
April 1 of the fiscal year in order to qualify for participation in fiscal year FY09. 
 Eligible Positions 
 The Company’s Chief Executive Officer (CEO), Chief Operating Officer (COO), and Executives holding a position at X02 level and above, are eligible to participate in
the Plan. 
 Program Payments 
 Bonus payments, based on
performance during the Plan Period, will be paid within 90 days following June 30, 2009, but in no event later than December 31, 2009. Bonus calculations are based on paid base salary for the applicable Plan Period. Paid base salary
includes base salary and seasonal bonuses paid in some countries if the seasonal bonus is considered a component of the employee’s annual salary. Paid base salary does not include relocation allowances and reimbursements, tuition
reimbursements, car/transportation allowances, expatriate allowances, commissions, long-term disability payments, or bonuses paid during the fiscal year. A participant must be a regular, active employee of the Company on the date of the payout in
order to receive payment. Employees who are promoted or hired into an eligible position during the year (on or before April 1) will have their payouts calculated on paid salary from the effective date of the promotion or hire. If an
employee’s target bonus changes during the year, the payout will be prorated. 
 Target Bonus 
 A target bonus is established as a percent of base salary for each Plan participant. 
 Funding Threshold 
 Total available funding for the Plan will be determined by performance against a threshold level of PFO performance for
the fiscal year. The Plan will be fully funded (equivalent to the sum of 3.00 times each Plan participant’s target bonus percentage and base salary) upon achievement of a performance threshold of $[omitted]** of PFO or greater (including

  
  

	**	This information has been omitted pursuant to a request for confidential treatment and has been filed separately with the SEC. 

			
	FY09 Performance Bonus Plan – Final	 	CONFIDENTIAL TREATMENT

  
 
Share-based compensation and excluding acquisitions, 1-time charges, and deal-related amortization). This performance threshold constitutes the performance
threshold for purposes of Section 162(m) of the Internal Revenue Code (Section 162(m)). This fully funded amount represents the maximum bonus opportunity for each Plan participant and the maximum total cost of the Plan. 
 Performance Matrix and Determination of Funding Available for Bonus Payments 
 Upon achievement of the funding threshold, the level of funding available for payment the Executives will be determined based on Total Company relative revenue growth and PFO performance as provided in the table below. Amounts in the table
represent the multiple of each Executive’s target bonus available for allocation of bonus payments (the Performance Matrix Multiple). 
 Relative Revenue Performance 
  

																					
	**	 	0.00	 	1.00	 	1.00	 	1.00	 	1.36	 	1.46	 	1.56	 	1.66	 	1.76	 	1.86
	**	 	0.00	 	1.00	 	1.00	 	1.00	 	1.29	 	1.39	 	1.49	 	1.59	 	1.69	 	1.79
	**	 	0.00	 	1.00	 	1.00	 	1.00	 	1.23	 	1.33	 	1.43	 	1.53	 	1.63	 	1.73
	**	 	0.00	 	0.96	 	1.00	 	1.00	 	1.16	 	1.26	 	1.36	 	1.46	 	1.56	 	1.66
	**	 	0.00	 	0.90	 	0.96	 	1.00	 	1.10	 	1.20	 	1.30	 	1.40	 	1.50	 	1.60
	**	 	0.00	 	0.83	 	0.90	 	0.96	 	1.03	 	1.13	 	1.23	 	1.33	 	1.43	 	1.53
	**	 	0.00	 	0.76	 	0.83	 	0.90	 	0.96	 	1.06	 	1.16	 	1.26	 	1.36	 	1.46
	**	 	0.00	 	0.70	 	0.76	 	0.83	 	0.90	 	1.00	 	1.10	 	1.20	 	1.30	 	1.40
	**	 	0.00	 	0.63	 	0.70	 	0.76	 	0.83	 	0.93	 	1.03	 	1.13	 	1.23	 	1.33
	**	 	0.00	 	0.57	 	0.63	 	0.70	 	0.77	 	0.87	 	0.97	 	1.07	 	1.17	 	1.27
	**	 	0.00	 	0.50	 	0.57	 	0.63	 	0.70	 	0.80	 	0.90	 	1.00	 	1.10	 	1.20
		 	**	 	**	 	**	 	**	 	**	 	**	 	**	 	**	 	**	 	**

 Profit from Operations (PFO) Performance 
 Multiple cannot exceed 3.0 regardless of level of performance 
  

	**	The information contained in these cells of this Performance Matrix has been omitted pursuant to a request for confidential treatment and has been filed separately with the SEC.

 Individual Performance and Determination of Executive Bonus Payments 
 Each individual Executive’s actual bonus payment amount will be based on the CEO’s assessment of the Executive’s performance for the year and determination of an Individual Performance Multiplier (IPM)
ranging from 80-120%. The IPM is multiplied by the Executive’s target bonus and the multiple achieved from the Performance Matrix to determine the actual bonus payment amount (see bonus calculation below). Each Executive’s performance will
be evaluated based on how effectively they led their organization as demonstrated against the key Balanced Scorecard measures and objectives for the Executive’s respective organization. The IPM and final bonus payments for each Plan
participant, with the exception of the CEO, will be recommended by the CEO and reviewed and approved by the Compensation Committee. The IPM and final bonus for the CEO will be determined by the company’s Board of Directors. 

			
	FY09 Performance Bonus Plan – Final	 	CONFIDENTIAL TREATMENT

  
 Bonus Calculation 

The formula for a participant’s bonus calculation is: 
 Paid Base Salary for Incentive Period 
 x Target Bonus 
 x Performance Matrix Multiple 
 x Individual Performance Multiplier (IPM) 
 In no event can an individual bonus payment to a participant exceed 3.00 times such participant’s Target Bonus. 
 General Provisions 
 The Compensation Committee (or the independent
members of the Company’s Board of Directors, within the meaning set forth in Section 162(m) (the “Independent Directors”)) shall be the Plan Administrator. The Compensation Committee (or the Independent Directors) shall make such
rules, regulations, interpretations and computations and shall take such other action to administer the Plan as it may deem appropriate. The establishment of the Plan shall not confer any legal rights upon any employee or other person for a
continuation of employment, nor shall it interfere with the rights of the Company to discharge any employee and to treat him or her without regard to the effect which that treatment might have upon him or her as a participant in the Plan. This Plan
shall be construed, administered and enforced by the Compensation Committee (or the Independent Directors), in its sole discretion. The laws of the State of California will govern any legal dispute involving the Plan. The Compensation Committee (or
the Independent Directors) may at any time alter, amend or terminate the Plan, subject to the requirements of Section 162(m).Severance and Consulting Agreement - John Kispert

 Exhibit 10.42 
 SEVERANCE AND CONSULTING AGREEMENT 
 JOHN KISPERT 
 This Severance and Consulting Agreement (“Agreement”) is entered into between KLA-Tencor Corporation (“Company”) and John Kispert
(“Kispert” or “Participant”) together (the “Parties”) on the latest date signed by the Parties below. 
  

	A.	SEPARATION FROM EMPLOYMENT 

 1. The Parties have agreed
that Kispert’s employment with the Company will end effective January 1, 2009 (“Termination Date”). Kispert will work until his Termination Date, unless otherwise advised by the Company, although nothing herein affects
Kispert’s status as an at-will employee between now and his Termination Date. 
 2. Kispert will receive his final paycheck reflecting
(i) all earned and unpaid salary, (ii) unreimbursed business expenses required to be reimbursed to Kispert in accordance with the Company’s business expense reimbursement policy, and (iii) pay for accrued but unused vacation that
the Company is legally obligated to pay Kispert. 
 3. Kispert will also receive distributions due pursuant to the terms of the
“KLA-Tencor Executive Deferred Savings Plan as amended and restated effective January 1, 2008” and Paragraph B(4) below. 
 4.
Kispert’s coverage under the Company group health plans will end on January 1, 2009. However, Kispert will have the opportunity to exercise his option to continue this benefit under COBRA after that date. Kispert will be provided a
benefits packet from ADP containing information on his COBRA rights and conversion to a direct pay plan. Kispert may call ADP directly at 1-866-998-8877, and ask for the COBRA unit if he has any questions about COBRA conversion. Additionally,
Kispert agrees to keep the Company informed of any address changes in case the Company need to mail Kispert future W-2’s and/or other correspondence. 
  

	B.	SEVERANCE AGREEMENT 

 1. Because Kispert’s employment
is being terminated by the Company other than for Cause as defined in the KLA -Tencor Corporation Executive Severance Plan (the “Plan”), incorporated herein, and provided he signs and does not revoke the release, he is entitled to benefits
and obligations under the Plan, as modified herein, which include but are not limited to the following: 
 a. An amount equal to the
Participant’s Severance Multiple multiplied by the Participant’s Base Salary, payable in equal installments over the Severance Period and in accordance with the Company’s normal payroll policies; 
  

	 	i.	Kispert’s case the Multiple is two (2), the Base Salary is $590,000 and the Severance Period is two (2) years. 

 b. The Participant’s Prorated Annual Incentive as defined in the Plan. 
  

	 	i.	In Kispert’s case this benefit amounts to $375,058. 

 c. Accelerated vesting with respect to the Participant’s then outstanding unvested equity awards with the Participant to receive additional vesting credit to be calculated based on the ratio of the number of months (with such number
rounded up to include any fractional months) from the date of grant of any such awards to the Termination Date and the number of months (with such number rounded up to include any fractional months) in the total original vesting period of any such
awards; notwithstanding the provisions in the applicable award agreements for the restricted stock units to the contrary, this Agreement serves as a modification (consistent with the transitional relief under IRS Notice 2007-86) of those award
agreements to require that the shares underlying any of Kispert’s accelerated restricted stock units shall be paid at his Termination Date, subject to Section 4 below. 
  

	 	i.	In Kispert’s case, the vesting as reflected in Exhibit A. 

 d. With respect to any of the Participant’s then outstanding options or stock appreciation rights shall have an extended post-termination exercise period equal to the earlier of (A) twelve (12) months from the date of
termination, or (B) the original term of such. 
  

	 	i.	In Kispert’s case, the option grants reflected in Exhibit B will have an extended post termination exercise period equal to the earlier of (A) twelve (12) months from
the date of termination, or (B) the original term of such. 

 2. The Company will also provide the following additional
benefits in exchange for a release: 
 a. The Company will enter into a consulting agreement in Section C of this Agreement, below, with
Kispert (the consideration for the consulting agreement is specified in Section C, below); and 
 b. Provided Kispert does not breach and
successfully completes the two (2) year term of the consulting agreement, the Company will waive the mitigation provision of Section 4(g) of the Plan 
 3. Kispert hereby acknowledges and agrees that he will experience a termination of Service Provider status under the terms of the 2004 Equity Incentive Plan on the date of termination of employment as an Employee (as
such term is defined under the 2004 Equity Incentive Plan) with the Company. 

 4. Kispert also hereby acknowledges and agrees
that he will experience a “separation from service” (within the meaning of Section 409A of the Internal Revenue Code of 1986, as amended “Section 409A”) on the Termination Date. In the event Kispert is a “specified
employee” (within the meaning of Section 409A) as of the date of termination, as determined in the sole discretion of the Company, and if the following delay is required under Section 409A, the payments contemplated in Sections 1(a),
1(b), and 1(c) hereof that would otherwise have been due within the first six (6) months following Termination Date shall be paid in a lump sum (or for shares, in a single payment) one (1) day following the last day of the sixth
(6th) complete calendar month following Kispert’s separation from service, or upon Kispert’s death, if earlier, and any remaining
installments following such date shall be made in accordance with the original payment schedule. Kispert further acknowledges and agrees that his service as a consultant under the terms of the consulting agreement below shall not be taken into
account for any purposes under the 2004 Equity Incentive Plan. 
 5. As a condition of receiving benefits under the Plan and in consideration
of additional benefits, Kispert, on behalf of his heirs, spouse and assigns, hereby releases the Company and its past and present officers, directors, employees, attorneys, shareholders, insurers and legal successors, and all related entities and
subsidiaries and their past and present officers, directors, employees, attorneys, shareholders, insurers and legal successors (collectively, the “Released Parties”) from any and all claims, liabilities, demands, and causes of action,
whether known or unknown, which Kispert has, may have, or claims to have against the Company including but not limited to any claims based upon or arising out of Kispert’s employment or the termination of his employment with the Company
heretofore occurring, which include, but are not limited to, any claims of wrongful termination, breach of contract, fraud, relating to the actual or right to purchase shares of Company stock, infliction of emotional distress, defamation,
negligence, retaliation, or any claims of age, race, sex, disability, sexual orientation, religious, national origin or other discrimination or harassment under federal, state or local laws prohibiting such discrimination. Kispert expressly agrees
and consents to the termination of his employment in exchange for the additional severance benefits outlined herein. Accordingly, the release agreement will take effect upon his signature. The only exceptions are any claims Kispert may have for
unemployment, workers compensation, or as provided under Section 10(d) of this Section, and any right Kispert may have as a vested beneficiary under the Company pension plan. 
 Kispert agrees he has read section 1542 of the California Civil Code, which states: 
 A general release does not extend to claims which the creditor does not know or suspect to exist in his for her favor at the time of executing the
release, which if known by him or her must have materially affected his or her settlement with the debtor. 
 Kispert hereby waives any right
or benefit that he has under section 1542, or any equivalent statute of another State, to the full extent that he may lawfully waive such rights with respect to this release agreement, and Kispert acknowledges that it is his intention to release all
known or unknown claims that he has or may have against the Parties released above. 
 6. Kispert understands and agrees that breach of his
consulting agreement, including breach of my fiduciary duty not to compete with the Company during the term of the consulting agreement or terminating such consulting agreement prior to the end of its two (2) year term shall constitute a
material breach of this Agreement. In such case, the Company will owe Kispert no further benefits under this Agreement and the Plan. 

 7. Kispert agrees that for a period of two (2) years from the commencement date of this Agreement,
Kispert shall not, at any time during the Severance Period, directly or indirectly solicit any individuals to leave the Company’s employ for any reason or interfere in any other manner with the employment relationships at the time existing
between the Company and its current or prospective employees. 
 8. Kispert understands that the terms of the Employee Proprietary
Information and Inventions Agreement that he signed when he joined the Company remains in force. Notwithstanding those obligations, Kispert will maintain the confidentiality of all Company’s confidential and proprietary information and comply
with the terms and conditions of my Employee Proprietary Information and Inventions Agreement. On his last day of work, Kispert will return all Company property and confidential and proprietary information to the Company. 
 9. Kispert acknowledges that he is waiving and releasing any rights he may have under the Age Discrimination in Employment Act of 1967 (“ADEA”)
as amended by the Older Workers’ Benefit Protection Act (“OWBPA”) and that this Agreement is knowing and voluntary, and that his termination is not in conjunction with a group termination within the meaning of ADEA or OWPA. Both the
Company and Kispert agree that this Agreement does not apply to any rights or claims that may arise under ADEA after the Effective Date of this release. 
 10. Kispert acknowledges that the consideration given for this Agreement is in addition to anything of value to which Kispert was already entitled. Kispert further acknowledges that he has been advised by this writing
that: 
 a. He should consult with an attorney prior to executing this Agreement; 
 b. He has up to twenty-one (21) days within which to consider this Agreement; 
 c. He has seven (7) days following the execution of this Agreement to revoke the Agreement in writing to the Company; and 

d. this Agreement shall not be effective until the revocation period has expired; and nothing in this Agreement prevents or precludes
Kispert from challenging or seeking a determination in good faith of the validity of this Agreement under the ADEA, nor does it impose any condition precedent, penalties or costs for doing so, unless specifically authorized by federal law.

  

	C.	CONSULTING AGREEMENT 

 1. Effective as of the date first
set forth below and for a period of two (2) years or until January 1, 2011, Kispert shall perform mutually agreed upon services for the Company, including but not limited to the following: 
 Assisting the new CFO with transitioning into his role; 

 Assisting the Company transitioning out of his COO role; 
 Any other mutually agreed upon consulting services which may be of interest to the Company 
 2. In consideration for Kispert entering into this consulting agreement and contingent on Kispert executing and not revoking the release agreement, the
Company will provide the following additional benefits to which Kispert is not otherwise entitled: 
  

	 	a.	Provided Kispert timely elects COBRA coverage, the Company will continue to pay the cost of group employee benefit coverage continuation under COBRA for 18 months following his
Termination Date to the same extent previously provided by Company’s group plans for as long as permitted under COBRA, or until Kispert becomes eligible for group insurance benefits from another employer, whichever occurs first. Kispert
understands that he has an obligation to inform the Company if he receives group health coverage from another employer before Kispert’s COBRA coverage ends pursuant to this agreement, and Kispert may not increase the number of his designated
dependents if any, during this time unless Kispert does so at his own expense. Kispert also understands that the period of such Company-paid COBRA coverage shall be considered part of his COBRA coverage entitlement period, and may, for tax purposes,
be considered income to him. 

  

	 	b.	The Company agrees to continue to pay the cost of continuation of term life insurance policy consistent with the levels currently provided by the Company for the shorter of
(i) two (2) years (ii) the term of the consulting agreement or (iii) until Kispert obtains employment. Kispert understands that he has an obligation to inform the Company if he becomes an employee of another employer before
January 1, 2011. 

  

	 	c.	During the term of Kispert’s consulting agreement, and provided Kispert uses the financial advising services of the AYCO company, KLA-Tencor will extend a benefit in the form
of a financial services provider (specifically, the AYCO Company) with a value of up to $20,000 per calendar year (no tax gross up) for the shorter of (i) two (2) years; or (ii) the term of the consulting agreement. Kispert
understands this is taxable income. 

 3. It is the express intention of the parties that Kispert is an independent consultant
and not an employee, agent, representative, joint venturer or partner of the Company. Nothing in this Agreement shall be interpreted or construed as creating or establishing the relationship of employer and employee between Company and Kispert or
any employee or agent of Kispert during the term of the consulting agreement. Kispert is obligated to report as taxable income all income received by him pursuant to this Agreement for his consulting services and make all payments of his tax
obligations with respect to such income. Kispert further agrees to indemnify Company and hold Company harmless from any and all claims made by any government agency or other entity on account of an alleged failure by Kispert to satisfy his reporting
or payment or other tax-related obligations. Kispert is free to perform work as a consultant or employee for any 

 
other entity and/or person provided that such engagement does not create a conflict of interest with Kispert’s obligations to Company, or compromise any
confidential or proprietary information as used in Kispert’s Proprietary Information and Invention Assignment Agreement. Further, Kispert must, at all times comply with his confidentiality obligations to the Company. 
 4. It is the intent of the parties that Kispert’s services shall be limited during the term of this Agreement such that he will have a
“separation from service,” within the meaning of Section 409A of the Internal Revenue Code of 1986, as amended, as of the date he terminated employment with the Company and commenced his services as a consultant. 
 Kispert agrees that during the term of this consulting agreement, Kispert owes a fiduciary duty to the Company and as such will not perform services for or be employed
by Competing Enterprises (as defined below). It is intended and agreed that during the term of Kispert’s services, he will knowingly perform no act which may confer any competitive benefit or advantage upon any Competing Enterprises. For
purposes of this provision, Competing Enterprises are defined as the following companies (and affiliates and subsidiaries thereof) or any entities that may acquire or obtain a majority ownership stake in the following companies: Applied Materials,
Inc. ASML Holding N.V., Camtek Ltd., FEI Company , Hermes Microvision, Inc., Hitachi, Ltd., Lasertec Corporation, Nanometrics Incorporated, Negevtech Ltd., NuFlare Technology, Inc., Orbotech Ltd., ReVera Inc., Rudolph Technologies, Inc., Synopsys,
Inc., Tokyo Electron Limited, and Timbre Technologies, Inc. 
  

	D.	MISCELLANEOUS 

 1. This Agreement shall be deemed to be a
contract made under, and shall be governed and construed in accordance with, the laws of the State of California. 
 2. The parties agree
that any and all disputes or claims, including all contract, tort, discrimination, common law or statutory disputes or claims between Kispert and the Company and/or its agents, arising under or relating to this Agreement shall be resolved by final
and binding arbitration. The sole exceptions are claims under applicable workers’ compensation law, unemployment insurance claims, claims brought solely before governmental agencies, and other provisions expressly prohibited by law as well as
disputes or claims brought by either the Company or me relating to or arising out of trade secrets or proprietary information claims or disputes or non-solicitation claims or disputes, for which either party may seek direct court intervention. For
all other arbitrable claims, Kispert and the Company agree that arbitration shall be exclusive, final and binding remedy. Kispert, the Company and its agents hereby waive any rights each may have to a jury trial in regard to the arbitrable claims.
Kispert and the Company further agree that the arbitrator shall have the sole authority to determine arbitrability of any such arbitrable claims. Arbitration shall be conducted by the American Arbitration Association in Santa Clara, California (or
other mutually agreed upon city) under the Employment Arbitration Rules. As, in any arbitration, the burden of proof shall be allocated as provided by applicable law. The Company agrees to pay the fees and costs of the arbitrator and the prevailing
party shall be awarded its attorneys fees. The arbitrator shall have the same authority as a court to award equitable relief, damages, costs, and fees (excluding the costs and fees for the arbitrator) as provided by law for the particular claims
asserted. This arbitration clause shall be governed by and construed in all respects under the terms of the Federal Arbitration Act. If Kispert has any questions regarding the foregoing provision or any provision of this Agreement, he understands
that he is to contact the Company. 

 3. This Agreement constitutes the entire agreement between the parties hereto and supersedes all other
agreements between Kispert and the Company, with the exception of (A) the Employee Proprietary Information and Inventions Agreement, and (B) the Plan (except for Section 5 therein). To the extent that any provision in this Agreement
conflicts with any provision set forth in any and all equity plans or equity agreements governing Kispert equity awards, including but not limited to, the equity awards made under the 2004 Equity Incentive Plan and any predecessor plan(s) to the
2004 Equity Incentive Plan, the provisions of this Agreement. Nothing herein shall extinguish or modify the Company’s obligations to indemnify Kispert as an officer of the Company under Delaware law or any contractual obligation by the Company.
No modification, amendment or waiver of any of the provisions of this Agreement shall be effective unless made in writing specifically referring to this Agreement and duly signed by an authorized officer or agent for each party hereto. 

4. In the event that any provision of this Agreement becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable or void,
this Agreement shall continue in full force and effect without said provision so long as the remaining provisions remain intelligible and continue to reflect the original intent of the Parties. 
 5. Kispert understands that the terms of the Employee Proprietary Information and Inventions Agreement he signed when he joined the Company remains in
force. Notwithstanding those obligations, Kispert agrees he will maintain the confidentiality of all Company’s confidential and proprietary information and comply with the terms and conditions of his Employee Proprietary Information and
Inventions Agreement. On Kispert’s last day of work, Kispert agrees to return all Company property and confidential and proprietary information to the Company. 
 6. Kispert understands and agrees that he will ask questions and escalate issues regarding the performance of this Agreement to Brian Martin. 
 7. The parties understand and agree that this Agreement shall not be deemed or construed at any time or for any purposes as an admission of liability or
wrongdoing by either Kispert or the Company. The parties also agree not to act in any manner that might damage the other. The parties also agree to refrain from any defamation, libel or slander or tortious interference with the contracts and
relationships of the other, unless Kispert’s contract or relationship is in conflict with Kispert’s consulting agreement set forth in Section C. 
 IN WITNESS WHEREOF, the Parties hereto have caused this Agreement to be executed as of the day and year first written below. 

 KISPERT UNDERSTANDS HE SHOULD CONSULT WITH AN ATTORNEY PRIOR TO SIGNING THIS RELEASE AND THAT HE IS
GIVING UP ANY LEGAL CLAIMS HE HAS AGAINST THE PARTIES RELEASED ABOVE BY SIGNING BELOW. HE ACKNOWLEDGES THAT HE IS SIGNING THIS RELEASE KNOWINGLY, WILLINGLY AND VOLUNTARILY IN EXCHANGE FOR THE ADDITIONAL BENEFITS DESCRIBED ABOVE. 
  

					
			
	Dated: 8/28/08	 		 	/s/ JOHN KISPERT
		 		 	John Kispert

  

			
	Accepted and Agreed to:
	KLA-TENCOR CORPORATION
		
	By:	 	/s/ BRIAN MARTIN
		 	Brian Martin
		 	General Counsel

 EXHIBIT A 
 The equity awards subject to Section B(1)(c) above and the vesting methodology are as follows: 
 As of 1-1-09

  

																									
	 Number
	  	Grant Date	  	Plan	  	Type	  	Granted	 	 	Vested	  	Unvested	 	 	Full Vest
Date	  	Pro-Ration
of Unvested
Shares	  	Pro-Rated
Shares at
1/1/09	  	Est. Value at
1/1/09
	 090148
	  	9/19/2006	  	 	EIP4	  	RSU	  	62,500	 	 	31,250	  	31,250	 	 	9/19/2010	  	0.57	  	17,860	  	$	658,148
	 100001
	  	8/8/2007	  	 	EIP4	  	RSU	  	62,500	*	 	0	  	62,500	*	 	8/8/2011	  	0.35	  	21,903	  	$	807,118
	 100007
	  	8/13/2007	  	 	EIP4	  	RSU	  	25,000	 	 	0	  	25,000	 	 	8/13/2011	  	0.35	  	8,676	  	$	319,695
	 A005409
	  	2/17/2006	  	 	EIP4	  	RSU	  	50,000	 	 	0	  	50,000	 	 	2/17/2011	  	0.57	  	28,724	  	$	1,058,479
	 A078440
	  	10/18/2004	  	 	EIP4	  	RSU	  	24,167	 	 	24,167	  	0	 	 		  		  		  		
	 B078440
	  	10/18/2004	  	 	EIP4	  	RSU	  	24,166	 	 	0	  	24,166	 	 	10/18/2009	  	0.84	  	20,328	  	$	749,088
		  		  			  		  	248,333	 	 	55,417	  	192,916	 	 		  		  	97,491	  	$	3,592,528
		  	Term Date:	  	 	1/1/2009	  		  			 		  			 		  		  		  		
		  	Stock Price**:	  	$	36.85	  		  			 		  			 		  		  		  		

  

	*	Represents the maximum number of shares that could have been earned under this performance award as of the grant date. 

  

	**	For illustrative purposes only. Solely for purposes of calculating the hypothetical estimated value at 1/1/09 in the table above. 

 Exhibit B 
 The stock options subject to Section B1(d) above are those options outstanding as of January 1, 2009 pursuant to the terms of the following grants: 
  
  

					
	Personnel Grant Status	  	KLA-Tencor Corporation	  	

 As of 1/1/09 
 John Kispert 
 Stock Options 
  

																								
	 Number
	 	Grant Date	 	Plan	 	Type	 	Granted	 	Price	 	Exercised	 	Vested	 	Cancelled	 	Unvested	 	Outstanding	 	Exercisable
	005424	 	2/17/2006	 	EIP4	 	NQ	 	25,000	 	$	52.5300	 	0	 	14,166	 	0	 	10,834	 	25,000	 	14,166
	009433	 	4/18/1995	 	1982	 	NQ	 	12,000	 	$	15.3100	 	12,000	 	12,000	 	0	 	0	 	0	 	0
	009922	 	9/17/1996	 	1982	 	NQ	 	6,000	 	$	10.9400	 	6,000	 	6,000	 	0	 	0	 	0	 	0
	010277	 	10/8/1996	 	1982	 	NQ	 	5,000	 	$	10.8100	 	5,000	 	5,000	 	0	 	0	 	0	 	0
	014034	 	8/31/1998	 	1982	 	NQ	 	6,000	 	$	10.6300	 	6,000	 	6,000	 	0	 	0	 	0	 	0
	014035	 	8/31/1998	 	1982	 	NQ	 	5,000	 	$	10.6300	 	5,000	 	5,000	 	0	 	0	 	0	 	0
	014036	 	8/31/1998	 	1982	 	NQ	 	15,200	 	$	10.6300	 	15,200	 	15,200	 	0	 	0	 	0	 	0
	014037	 	8/31/1998	 	1982	 	NQ	 	7,000	 	$	10.6300	 	7,000	 	7,000	 	0	 	0	 	0	 	0
	016304	 	8/31/1998	 	1982	 	NQ	 	12,000	 	$	10.6300	 	12,000	 	12,000	 	0	 	0	 	0	 	0
	021982	 	10/27/1999	 	1982	 	NQ	 	30,000	 	$	33.7500	 	30,000	 	30,000	 	0	 	0	 	0	 	0
	025078	 	8/13/2000	 	1982	 	NQ	 	5,370	 	$	44.6875	 	5,370	 	5,370	 	0	 	0	 	0	 	0
	046142	 	11/8/2002	 	1982	 	NQ	 	12,500	 	$	37.0500	 	6,875	 	12,500	 	0	 	0	 	5,625	 	5,625
	050133	 	1/28/2003	 	1982	 	NQ	 	25,000	 	$	34.6700	 	13,750	 	25,000	 	0	 	0	 	11,250	 	11,250
	053919	 	7/30/2003	 	1982	 	NQ	 	12,500	 	$	51.2290	 	0	 	12,500	 	0	 	0	 	12,500	 	12,500
	057476	 	10/27/2003	 	1982	 	NQ	 	30,000	 	$	53.8600	 	0	 	30,000	 	0	 	0	 	30,000	 	30,000
	062062	 	1/27/2004	 	1982	 	NQ	 	15,000	 	$	58.1000	 	0	 	15,000	 	0	 	0	 	15,000	 	15,000
	064938	 	4/26/2004	 	1982	 	NQ	 	18,750	 	$	45.1600	 	0	 	18,750	 	0	 	0	 	18,750	 	18,750
	070840	 	8/2/2004	 	1982	 	NQ	 	11,250	 	$	40.6600	 	0	 	11,250	 	0	 	0	 	11,250	 	11,250
	070857	 	9/21/2004	 	1982	 	NQ	 	75,000	 	$	41.7900	 	0	 	63,750	 	0	 	11,250	 	75,000	 	63,750
	082427	 	9/26/2005	 	EIP4	 	NQ	 	75,000	 	$	47.9500	 	0	 	48,750	 	0	 	26,250	 	75,000	 	48,750
	R027840	 	8/13/2000	 	1982	 	NQ	 	8,658	 	$	66.8100	 	0	 	8,658	 	0	 	0	 	8,658	 	8,658
	R029211	 	11/10/2000	 	1982	 	NQ	 	1,000	 	$	32.8800	 	0	 	1,000	 	0	 	0	 	1,000	 	1,000
	R038226	 	4/4/2001	 	1982	 	NQ	 	2,667	 	$	50.8200	 	0	 	2,667	 	0	 	0	 	2,667	 	2,667
	R040759	 	10/2/2001	 	1982	 	NQ	 	14,000	 	$	45.2500	 	0	 	14,000	 	0	 	0	 	14,000	 	14,000

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00148-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00148-of-00352.parquet"}]]