Document:

Form of Confidential Separation Agreement and General Release

 EXHIBIT 10.1 
 CONFIDENTIAL SEPARATION AGREEMENT 
 AND GENERAL RELEASE OF ALL CLAIMS 
 This Confidential Separation Agreement and General Release of All Claims (the “Agreement”) is made by and between Northstar
Neuroscience, Inc. (“Northstar”) and Deborah Sheffield (“Employee”) with respect to the following facts: 
 A. Employee is currently employed by Northstar pursuant to an Executive Employment Agreement dated September 15, 2008, as amended by First Amendment to Executive Employment Agreement dated January 27, 2009 (as amended,
“Employment Agreement”). Pursuant to Employee’s Employment Agreement, Employee is entitled to severance benefits in the event his employment is terminated under certain circumstances. 
 B. Northstar is ceasing operations and liquidating its assets. As a result, Employee’s employment will cease effective April 30, 2009 or such
earlier date as Northstar and Employee may mutually agree (the “Separation Date”). Northstar wishes to reach an amicable separation with Employee and assist Employee’s transition to other employment. 
 C. Pursuant to the Employment Agreement, the parties are entering into this Agreement. The parties desire to settle all claims and issues that have, or
could have been raised, by Employee in relation to Employee’s employment with Northstar and arising out of or in any way related to the acts, transactions or occurrences between Employee and Northstar to date, including, but not limited to,
Employee’s employment with Northstar or the termination of that employment, on the terms set forth below. 
 THEREFORE, in consideration
of the promises and mutual agreements hereinafter set forth, it is agreed by and between the undersigned as follows: 
 1. Agreement.

 1.1 Termination of Employment. Employee’s employment with Northstar is terminated by Northstar, pursuant to
Section 7.3 of the Employment Agreement, effective on the Separation Date. 
 1.2 Severance Package. Northstar
agrees to provide Employee with the severance benefits described in Section 7.3 of the Employment Agreement and in this paragraph 1.2 (the “Severance Package”). Northstar agrees to pay the severance payment provided for in the
Employment Agreement in a lump sum on the first regularly scheduled Northstar pay day following the Effective Date of this Agreement as described in paragraph 9.2 below. As a point of clarification regarding the COBRA benefits described in the
Severance Package, after May 31, 2009, Northstar’s group health plan will terminate and COBRA coverage will no longer be available. Accordingly, if by May 1, 2009 Employee will not become eligible to obtain health coverage through
another employer by June 1, 2009, Northstar will provide Employee with a lump sum payment in the amount of $7,018 in an effort to help defray the cost that Employee will incur in securing Employee’s own health insurance coverage after
May 31, 2009. The lump sum payment will be made on or before May 31, 2009 and will be subject to all applicable taxes. Employee acknowledges that this lump sum payment made pursuant to this Paragraph is in full satisfaction of
any pre-existing Northstar obligation to provide Employee with continued health insurance coverage after termination of employment. Employee acknowledges and agrees that this Severance Package constitutes adequate legal consideration for the
promises and representations made by Employee in this Agreement. 

 1.3 No Bonus for 2009 Service. Employee acknowledges that she will not be entitled
to a bonus for any services rendered in 2009. 
 2. General Release. 
 2.1 Employee unconditionally, irrevocably and absolutely releases and discharges Northstar, and any parent and subsidiary corporations,
divisions and affiliated corporations, partnerships or other affiliated entities of Northstar, past and present, as well as Northstar’s employees, officers, directors, agents, shareholders, successors and assigns (collectively,
“Released Parties”), from all claims related in any way to the transactions or occurrences between them, directly or indirectly, to date, to the fullest extent permitted by law, including, but not limited to, Employee’s
employment with Northstar, the termination of Employee’s employment, Employee’s ownership of Northstar stock, and all other losses, liabilities, claims, charges, demands and causes of action, known or unknown, suspected or unsuspected,
arising directly or indirectly out of or in any way connected with Employee’s employment with Northstar or Employee’s status as a Northstar stockholder. This release is intended to have the broadest possible application and includes, but
is not limited to, any securities-related claims and any claims for breach of contract, wrongful termination, defamation, employment discrimination, harassment, retaliation, and any other tort, contract, common law, constitutional or other statutory
claims, arising under state, federal or local law, including, but not limited to alleged violations of the federal Fair Labor Standards Act, Title VII of the Civil Rights Act of 1964, the Americans with Disabilities Act, the Age Discrimination in
Employment Act of 1967, as amended, and all claims for attorneys’ fees, costs and expenses. However, this general release is not intended to bar any claims that, by statute, may not be waived, such as any challenge to the validity of
Employee’s release of claims under the Age Discrimination in Employment Act of 1967, as amended, as set forth in this Agreement. 
 2.2 Employee acknowledges that Employee may discover facts or law different from, or in addition to, the facts or law that Employee knows or believes to be true with respect to the claims released in this Agreement
and agrees, nonetheless, that this Agreement and the release contained in it shall be and remain effective in all respects notwithstanding such different or additional facts or the discovery of them. 
 2.3 Employee declares and represents that Employee intends this Agreement to be complete and not subject to any claim of mistake, that the
release herein expresses a full and complete release of all claims known and unknown, suspected and unsuspected and that, regardless of the adequacy or inadequacy of the consideration, Employee intends the release herein to be final and complete.
Employee executes this release with the full knowledge that this release covers all possible claims against the Released Parties, to the fullest extent permitted by law. 
 2.4 Employee expressly waives Employee’s right to recovery of any type, including damages or reinstatement, in any administrative or
court action, whether state or federal, and whether brought by Employee or on Employee’s behalf, related in any way to the matters released herein. 
 3. Representation Concerning Filing of Legal Actions. Employee represents that, as of the date of this Agreement, Employee has not filed any lawsuits, charges, complaints, petitions, claims or other accusatory
pleadings against Northstar or any of the other Released Parties in any court or with any governmental agency. 
 4. Mutual
Nondisparagement. Employee agrees that Employee will not make any voluntary statements, written or oral, or cause or encourage others to make any such statements that defame, disparage or in any way criticize the personal and/or business
reputations, practices or 

 
conduct of Northstar or any of the other Released Parties. Accordingly, Northstar agrees that its officers and directors will not make any voluntary
statements, written or oral, or cause or encourage others to make any such statements that defame, disparage or in any way criticize the personal and/or business reputations, practices or conduct of Employee. 
 5. Confidentiality and Return of Northstar Property. 
 5.1 Confidential Separation Information. Employee agrees that the terms and conditions of this Agreement, as well as the discussions that led to the terms and conditions of this Agreement (collectively referred
to as the “Confidential Separation Information”) are intended to remain confidential between Employee and Northstar. Employee further agrees that Employee will not disclose the Confidential Separation Information to any other
persons, except that Employee may disclose such information to Employee’s immediate family members and to Employee’s attorney(s) and accountant(s), if any, to the extent needed for legal advice or income tax reporting purposes. When
releasing this information to any such person, Employee shall advise the person receiving the information of its confidential nature. Neither Employee nor anyone to whom the Confidential Separation Information has been disclosed will respond to, or
in any way participate in or contribute to, any public discussion, notice or other publicity concerning the Confidential Separation Information. Without limiting the generality of the foregoing, Employee specifically agrees that neither Employee,
Employee’s immediate family, Employee’s attorney nor Employee’s accountant, if any, shall disclose the Confidential Separation Information to any current, former or prospective employee of Northstar. Nothing in this paragraph will
preclude Employee from disclosing information required in response to a subpoena duly issued by a court of law or a government agency having jurisdiction or power to compel such disclosure, or from giving full, truthful and cooperative answers in
response to a duly issued subpoena. 
 5.2 Confidential or Proprietary Information. Employee also agrees that Employee
will not use, remove from Northstar’s premises, make unauthorized copies of or disclose any confidential or proprietary information of Northstar or any affiliated or related entities, including but not limited to, their trade secrets,
copyrighted information, customer lists, any information encompassed in any research and development, reports, work in progress, drawings, software, computer files or models, designs, plans, proposals, marketing and sales programs, financial
projections, and all concepts or ideas, materials or information related to the business or sales of Northstar and any affiliated or related entities that has not previously been released to the public by an authorized representative of those
companies. 
 5.3 Continuing Obligations. Employee understands and agrees that certain terms and conditions of the
Confidentiality, Inventions and Non-Competition Agreement (“Confidentiality Agreement”) that Employee signed while employed by Northstar survive the termination of Employee’s employment. Employee agrees to abide by such
surviving provisions of the Employment Agreement and Confidentiality Agreement, including but not limited to nondisclosure of Northstar’s confidential and proprietary information. 
 5.4 Return of Northstar Property. By signing this Agreement, Employee represents and warrants that Employee will have returned to
Northstar on or before the Separation Date, all Northstar property, including all confidential and proprietary information, as described in or required by paragraphs 5.2 and 5.3 above, and all materials and documents containing trade secrets,
including lab notebooks, and copyrighted materials, including all copies and excerpts of the same. 

 6. No Other Severance Benefits. Employee expressly acknowledges and agrees that the Severance
Package provided pursuant to this Agreement is in lieu of any other severance payments and/or benefits to which Employee may be eligible under any other Northstar severance policy, program, plan, practice or agreement. Specifically, Employee
acknowledges and agrees that Employee is not entitled to severance under the Northstar Severance and Retention Program for Staff Employees dated January 2009 or Severance Program for Director Level Employees dated January 2009. By signing this
Agreement, Employee expressly waives any right Employee may have to receive severance under any other Northstar severance policy, program, plan, practice or agreement, including but not limited to the Severance and Retention Program for Staff
Employees dated January 2009 or Severance Program for Director Level Employees dated January 2009. 
 7. Enforcement. If Employee
breaches any of the terms in paragraphs 4 or 5 above or their subparts, Northstar will immediately cease providing the severance payments and benefits described in paragraph 1 above, to the extent those payments and benefits have not yet been
provided. 
 8. No Admissions. By entering into this Agreement, the Released Parties make no admission that they have engaged, or are
now engaging, in any unlawful conduct. The parties understand and acknowledge that this Agreement is not an admission of liability and shall not be used or construed as such in any legal or administrative proceeding. 
 9. Older Workers’ Benefit Protection Act. This Agreement is intended to satisfy the requirements of the Older Workers’ Benefit
Protection Act, 29 U.S.C. sec. 626(f). Employee is advised to consult with an attorney before executing this Agreement. 
 9.1
Acknowledgments/Time to Consider. Employee acknowledges and agrees that (a) Employee has read and understands the terms of this Agreement; (b) Employee has been advised in writing to consult with an attorney before executing this
Agreement; (c) Employee has obtained and considered such legal counsel as Employee deems necessary; (d) Employee has been given at least forty-five (45) days to consider whether or not to enter into this Agreement (Employee may elect
not to use the full consideration period at Employee’s option, but Employee should not sign this Agreement prior to the Separation Date); and (e) by signing this Agreement, Employee acknowledges that Employee does so freely, knowingly, and
voluntarily. If Employee decides to enter into this Agreement, Employee must sign this Agreement and submit it to Brian Dow, Vice President of Finance and Chief Financial Officer, no later than 45 days from April 1, 2009, or
Employee’s Separation Date, whichever is later. 
 9.2 Revocation/Effective Date. This Agreement shall not become
effective or enforceable until the eighth day after Employee signs this Agreement. In other words, Employee may revoke Employee’s acceptance of this Agreement within seven (7) days after the date Employee signs it. Employee’s
revocation must be in writing and received by Brian Dow, Vice President of Finance and Chief Financial Officer, by 5:00 p.m. Pacific Time on the seventh day in order to be effective. If Employee does not revoke acceptance within the seven
(7) day period, Employee’s acceptance of this Agreement shall become binding and enforceable on the eighth day (“Effective Date”). The Severance Package will become due and payable in accordance with paragraph 1 above
and its subparts after the Effective Date, provided Employee does not revoke. 
 9.3 Preserved Rights of Employee. This
Agreement does not waive or release any rights or claims that Employee may have under the Age Discrimination in Employment Act that arise after the execution of this Agreement. In addition, this Agreement does not prohibit Employee from challenging
the validity of this Agreement’s waiver and release of claims under the federal Age Discrimination in Employment Act of 1967, as amended. 

 9.4 Required Disclosures. Employee further acknowledges that Employee has been
advised of the following information: (i) all Northstar employees were considered for lay off in connection with the reduction-in-force announced January 5, 2009; (ii) Northstar used the following criteria in selecting employees for
lay off: all Northstar employees were selected for layoff due to the cessation of operations and liquidation of assets; (iii) all employees whose employment is being terminated as a result of the reduction-in-force announced January 5,
2009 are eligible for severance pay; (iv) all selected employees age 40 or over will have at least forty-five (45) days within which to consider whether to accept the Agreement; (v) all selected employees under age 40 will
have at least 7 calendar days to consider whether to accept the Agreement; (vi) the job titles and ages of all employees in the same job classification or organizational unit as Employee who are eligible or selected for this program are listed
in part A to Exhibit 1 of this Agreement; and (vii) employees in the same job classification or organizational unit as Employee who are not eligible or selected for this program are listed in part B to Exhibit 1 of this
Agreement. 
 10. Severability. In the event any provision of this Agreement shall be found unenforceable by an arbitrator or a court
of competent jurisdiction, the provision shall be deemed modified to the extent necessary to allow enforceability of the provision as so limited, it being intended that Northstar shall receive the benefits contemplated herein to the fullest extent
permitted by law. If a deemed modification is not satisfactory in the judgment of such arbitrator or court, the unenforceable provision shall be deemed deleted, and the validity and enforceability of the remaining provisions shall not be affected
thereby. 
 11. Applicable Law. The validity, interpretation and performance of this Agreement shall be construed and interpreted
according to the laws of the United States of America and the State of Washington. 
 12. Binding on Successors. The parties agree
that this Agreement shall be binding on, and inure to the benefit of, Northstar and its successors and/or assigns. 
 13. Full
Defense. This Agreement may be pled as a full and complete defense to, and may be used as a basis for an injunction against, any action, suit or other proceeding that may be prosecuted, instituted or attempted by Employee in breach hereof.

 14. Good Faith. The parties agree to do all things necessary and to execute all further documents necessary and appropriate to
carry out and effectuate the terms and purposes of this Agreement. 
 15. Entire Agreement; Modification. This Agreement, including
the surviving provisions of the Employment Agreement, Confidentiality Agreement signed by Employee and the 1999 Stock Option Plan and 2006 Performance Incentive Plan and associated stock option agreements and grant documents herein incorporated by
reference, is intended to be the entire agreement between the parties and supersedes and cancels any and all other and prior agreements, written or oral, between the parties regarding this subject matter. It is agreed that there are no collateral
agreements or representations, written or oral, regarding the terms and conditions of Employee’s separation of employment with Northstar and settlement of all claims between the parties other than those set forth in this Agreement. This
Agreement may be amended only by a written instrument executed by all parties hereto. 
 THE PARTIES TO THIS AGREEMENT HAVE READ THE FOREGOING AGREEMENT AND
FULLY UNDERSTAND EACH AND EVERY PROVISION CONTAINED HEREIN. WHEREFORE, THE PARTIES HAVE EXECUTED THIS AGREEMENT ON THE DATES SHOWN BELOW. 
  

							
	Dated:
                                	 		 	By:	 	 
		 		 		 	Deborah Sheffield
				
	Dated:
                                	 		 	By:	 	 
		 		 		 	Brian Dow
		 		 		 	Northstar Neuroscience, Inc.
		 		 		 	Vice President, Finance and Chief Financial OfficerAmendment number one to the Wafer Supply Agreement

 Exhibit 10.1 
 CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS,
HAS BEEN OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
COMMISSION PURSUANT TO RULE 24B-2 OF THE SECURITIES EXCHANGE ACT OF 1934,
AS AMENDED. 
 AMENDMENT NUMBER ONE 
 TO 
 WAFER SUPPLY AGREEMENT 
 This Amendment Number One (the “Amendment”), effective as of December 19, 2008 (the “Amendment Effective Date”), amends the Wafer Supply
Agreement effective April 1, 2005 (the “Agreement”) by and between: 
  

	 	(1)	POWER INTEGRATIONS INTERNATIONAL LTD., a Cayman Islands corporation having a place of business at 4th Floor, Century Yard, Cricket Square, Elgin Avenue, P. O. Box 32322, Grand
Cayman KY1-1209 (“Power Integrations”) 

 and 
  

	 	(2)	SEIKO EPSON CORPORATION, a Japanese corporation having a place of business at 281 Fujimi, Fujimi-machi, Suwa-gun, Nagano-ken, 399-0293 Japan (“Seiko Epson”).

 RECITALS 
 WHEREAS, pursuant to the terms of the Agreement, Power Integrations grants to Seiko Epson licenses of certain of Power Integrations’ intellectual property for the sole purpose of Power Integrations acquiring from Seiko Epson the
fabrication and supply of wafers of certain power IC products; and 
 WHEREAS, Power Integrations and Seiko Epson desire to amend the terms
of the Agreement; and 
 WHEREAS, in accordance with Section 18.10 of the Agreement, the Agreement may be amended only by an instrument
in writing duly executed by authorized representative of Seiko Epson and Power Integrations. 
 NOW, THEREFORE, in consideration of the mutual promises
contained herein and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereby amend the Agreement as follows: 
 AGREEMENT 
  

	1.	Exhibit B of the Agreement is deleted in its entirety and replaced with Exhibit B in the form attached hereto. 

  

			
	 Confidential
	  	

	2.	Effective as of the Amendment Effective Date, all references in the Agreement to the “Agreement” or “this Agreement” shall mean the Agreement as amended by this
Amendment. Except as expressly amended herein, the terms of the Agreement continue unchanged and shall remain in full force and effect. This Amendment may be executed in one or more counterparts, each of which shall be considered an original, but
all of which counterparts together shall constitute one and the same instrument. 

 IN WITNESS WHEREOF, the parties have caused this
Amendment to be executed by their duly authorized representatives, effective as of the Amendment Effective Date. 
  

									
	SEIKO EPSON CORPORATION	 		 	POWER INTEGRATIONS INTERNATIONAL, LTD.
					
	By:	 	/s/ Kazuhiro Takenaka	 		 	By:	 	/s/ John Tomlin
	Name:	 	Kazuhiro Takenaka	 		 	Name:	 	John Tomlin
	Title:	 	Deputy Chief Executive	 		 	Title:	 	President

  

			
	 Confidential
	  	
	  
 CERTAIN CONFIDENTIAL
INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED
AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO
RULE 24B-2 OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED.

 Exhibit B 
 WAFER PRICES FOR VOLUME PRODUCTION OF SIX (6) INCH WAFERS BY 
 MONTHLY ORDER VOLUME

 For DS WAFERS in both PILOT PRODUCTION and VOLUME PRODUCTION: 
  

													
	 Calendar Year
 Monthly WAFER
Volume
	  	2008
PRICE	 	 	2009
PRICE	 	 	2010
PRICE	 
	 Less than [*]
	  	$	[	*]	 	$	[	*]	 	$	[	*]
	 [*] to [*]
	  	$	[	*]	 	$	[	*]	 	$	[	*]
	 [*] to [*]
	  	$	[	*]	 	$	[	*]	 	$	[	*]
	 [*] and above
	  	$	[	*]	 	$	[	*]	 	$	[	*]

 Pricing will be reviewed and mutually agreed to in writing on an annual basis. 
 For WAFERS in ENGINEERING PRODUCTION, the price for each entry of the above table will be multiplied by [*]. 
 The above prices are the WAFER’S BASE_PRICE and are based on an exchange rate of [*] ¥/$. The fluctuation in foreign exchange rate, as supplied by the Wall
Street Journal, will be shared equally by each party as follows 
 F/X_BASE =[*]¥/$ 
 Initial F/X_RATE = [*]¥/$ 
 A new F/X_RATE is only established at the time of placing a PO for WAFERS if the [*] is
equal to or greater than ±[*]¥ from the F/X-BASE. The new F/X RATE will be set to the [*] and will remain in effect for at least the [*] it was established. 
 The actual PURCHASE_PRICE for WAFERS, by WAFER TYPE, used at the time of order will be calculated by the following formula: 
 PURCHASE_PRICE = 
 [*] 
  

			
	 Confidential
	  	
	  
 CERTAIN CONFIDENTIAL
INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED
AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO
RULE 24B-2 OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED.

 Examples: For DS WAFERS with a BASE_PRICE of $[*] 
  

	1)	Nominal F/X Rate Example: F/X_RATE = in the range of [*]¥ to [*]¥: 

	 	PURCHASE_PRICE = BASE_PRICE 

  

	2)	Higher F/X Rate Example: New F/X_RATE = [*]¥: 

	 	PURCHASE_PRICE = $[*] = [*] 

  

	3)	Lower F/X Rate Example: New F/X_RATE = [*]¥: 

	 	PURCHASE_PRICE = $[*] = [*] 

  

			
	 Confidential
	  	
	  
 CERTAIN CONFIDENTIAL
INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED
AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO
RULE 24B-2 OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED.

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