Document:

Agreement for Fracturing Services

 Exhibit 10.5 
 CERTAIN PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED BASED ON A 
 REQUEST
FOR CONFIDENTIAL TREATMENT 
 OMITTED PORTIONS HAVE BEEN SEPARATELY FILED WITH THE 

SECURITIES AND EXCHANGE COMMISSION 
 ADDENDUM 
 This Addendum (this “Addendum”), dated as of January 14,
2011, to the Agreement for Fracturing Services (Eagle Ford Shale), effective as of September 1, 2010 (the “Fracturing Agreement”), between Platinum Energy Solutions, Inc. (“PES”) and Petrohawk Energy
Corporation (“Petrohawk”) and the Escrow Agreement between PES, Petrohawk and Morgan Stanley Trust, N.A. (the “Escrow Agreement,” together with the Fracturing Agreement, the “Agreements”), is
between PES, Petrohawk and Morgan Stanley Trust, N.A. (the “Escrow Agent”), solely with respect to the Escrow Agreement, and is made a part of each of the Agreements, and each of the Agreements is hereby amended and supplemented as
set forth below. All capitalized terms used in this Addendum and not defined herein shall have the respective meanings ascribed to them in the Fracturing Agreement. 
 1. The Service Period shall commence on May 1, 2011 and shall continue thereafter for a period of twenty-four (24) months. Petrohawk will pay PES the Service Fees beginning the month the
Services are commenced by PES and continuing each month thereafter during the Service Period. 
 2. PES agrees to release and instruct the
Escrow Agent to disburse to Petrohawk the funds being held by the Escrow Agent. 
 3. If PES fails to perform the Services by August 31,
2011, the Fracturing Agreement will immediately terminate and the remaining balance of the escrow amount shall be returned to Petrohawk. 
 This Addendum may be executed in one or more counterparts, each of which counterpart shall be deemed an original instrument and all of which together shall constitute a single Addendum. Except to the
extent amended or modified herein, all provisions of the Agreements shall be and remain in full force and effect in accordance with their respective terms and each of the Agreements hereby is ratified and confirmed in all respects. In the event of
any conflict between the terms of this Addendum and any of the Agreements or any other agreement between Petrohawk and PES related to the subject matter referred to herein, the terms of this Addendum shall control. 

 

									
	Petrohawk Energy Corporation	 		 	Platinum Energy Solutions, Inc.
					
	By:	 	 /s/ Christian D. Morro
	 		 	By:	 	 /s/ J. Clarke Legler II

		 	Name:  Christian D. Morro	 		 		 	Name:  J. Clarke Legler II
		 	Title:  VP Operations-Western Region	 		 		 	Title:  Chief Financial Officer

 PLATINUM ENERGY SOLUTIONS, INC. HAS CLAIMED CONFIDENTIAL 

TREATMENT OF PORTIONS OF THIS AGREEMENT IN ACCORDANCE WITH 
 RULE 406 UNDER THE SECURITIES ACT OF 1933 
  

 The undersigned acknowledges and agrees to the disbursement of the escrow amount in accordance with
Escrow Agreement: 
  

			
	Morgan Stanley Trust, N.A.
		
	By:	 	  

		 	Name:
		 	Title:

  

			
	Date:	 	  

 PLATINUM ENERGY SOLUTIONS, INC. HAS CLAIMED CONFIDENTIAL 

TREATMENT OF PORTIONS OF THIS AGREEMENT IN ACCORDANCE WITH 
 RULE 406 UNDER THE SECURITIES ACT OF 1933 
  

 Parties Platinum Energy Solutions and Petrohawk Energy 

Agreement for Fracturing Services 
 (Eagle Ford Shale) 
 Parties 

Platinum Energy Solutions, Inc. (“PES”), and Petrohawk Energy (“Petrohawk”). 
 Basic Transaction 
 PES will perform oil and gas well Fracturing Services (the
“Services”) under the Petrohawk Master Service Agreement herein attached and incorporated by reference, for Petrohawk’s designated well sites in the Eagle Ford shale area, under the terms set forth in this agreement (the
“Agreement”). 
 Term of Agreement 
 Eight months, beginning on September 1, 2010, consisting of (i) an initial Eight (8) month period in which the frac pumping equipment and operating personnel to be provided by PES will be
constructed and mobilized (the “Mobilization Period”), and (ii) the remaining Twenty-four (24) month period when the Services will be performed (the “Service Period”). 

PES Responsibilities 
 PES will determine
equipment needed and at its expense, provide and supply the equipment and personnel, needed for the Services, including: 
  

	 	•	 	 Frac pumping equipment, with overall hydraulic horsepower by job design, which will include up to 50% back up 

 

	 	•	 	 Pump down equipment, with overall hydraulic horsepower by job design 

 

	 	•	 	 Equipment to pump chemicals 

  

	 	•	 	 Operators, operation support, and technical personnel for 24 hour operation 

 

	 	•	 	 Real time job data acquisition including post job reporting 

 The frac pumping equipment to be supplied by PES will provide a pumping capability of 100 barrels per minute (bpm) at 15,000 psi treating pressure. 

A complete list of the equipment and personnel titles to be provided by PES. PES shall maintain its equipment in good condition and repair at all times
and shall use reasonable means to prevent damage to and protect the hole. PES shall perform its services in a good and workman like manner to Petrohawk’s satisfaction. PES shall comply with all laws, rules and regulations of any federal, state
or local governmental authority which now or may become applicable to its operations under this Agreement. 

 PLATINUM ENERGY SOLUTIONS, INC. HAS CLAIMED CONFIDENTIAL 

TREATMENT OF PORTIONS OF THIS AGREEMENT IN ACCORDANCE WITH 
 RULE 406 UNDER THE SECURITIES ACT OF 1933 
  

 Petrohawk’s Responsibilities 
 Petrohawk will, at its expense, provide, supply, or prepare and have in place the equipment, materials, services, and items listed below: 

 

	 	•	 	 Well site pads 

  

	 	•	 	 Water for the fracturing fluids 

 Other Services or Items 
 PES will be afforded the opportunity to provide or supply, under
separate pricing agreements, additional services; to be determined by the parties, on a price per stage basis. The following additional materials, services, and items would include but not limited to: 

 

	 	•	 	 Transportation of Proppant and Chemicals (i.e., sands) to the well sites 

 

	 	•	 	 Supplying Chemicals and Proppant for the fracturing 

 Maximum Services 
 PES will not be required to perform Services that exceed the capacities
and specifications of the specific frac pumping equipment to be provided by PES. 
 Revision of Rates 

Every quarter, PES will recalculate stage rates and the Monthly Minimum charges based on market fluctuations (I.e. Proppant, chemicals, service
pricing and availability) and submit to Petrohawk for approval. The revisions will also incorporate any design changes requested by Petrohawk. 

Force Majeure 
 In the event of Force
Majeure (I.e. acts of God) that prevents PES from providing Frac Services to Petrohawk under the terms of this Agreement or prevents Petrohawk from drilling and completing wells in the Eagle Ford shale area, both parties shall be excused from their
respective obligations during such Force Majeure period. A Force Majeure event shall include action of natural elements, wars (declared or undeclared), insurrection, revolution, civil strife, terrorist acts and legislative changes that make drilling
and completion activities impracticable. 
 Payments and Terms 
 Mobilization Period. Simultaneous with execution of this agreement, Petrohawk will place into escrow with Morgan Stanley as escrow agent, $10 million dollars. The escrow agent shall disburse the
escrow amount during the Service Period in an amount equal to $500 thousand per month, with such amount being applied to the costs of services and materials provided by PES hereunder. Any amounts not so disbursed at the termination of this Agreement
shall be distributed to Petrohawk. 
 Service Period. During the Service Period, Petrohawk will pay PES a monthly fee (the “Service
Fees”) equal to: 

 PLATINUM ENERGY SOLUTIONS, INC. HAS CLAIMED CONFIDENTIAL 

TREATMENT OF PORTIONS OF THIS AGREEMENT IN ACCORDANCE WITH 
 RULE 406 UNDER THE SECURITIES ACT OF 1933 
  

 The greater of: 
 (A) The total number of stages performed by PES during the month, multiplied by a “stage rate” that is negotiated per stage, and subject to adjustments as set forth below (the “Stage
Rate”), 
 or 
 (B) $ * (the “Monthly Minimum”). The monthly minimum payment shall only be paid during months when PES is able to pump a minimum of 22 days per month with only nominal PES downtime during those
days. 
 Sales and Other Transfer Taxes. Unless Petrohawk provides PES with appropriate tax exemption certificates, in addition to the
Mobilization Fees and Service Fees owed by Petrohawk to PES, Petrohawk will also pay PES all applicable sales and other transfer taxes that may be owed on the Services provided by PES to Exco. 

Payment Terms. Once the Service Period begins, PES will send Petrohawk invoices electronically for services rendered on a well
by well basis. Petrohawk will transfer funds electronically to a PES account (TBA) for all Service Fees due on final Invoices within 30 days of invoice transmittal (i.e. payment terms of 30 days). Petrohawk will pay PES a service charge of one and
one-half (1 1/2%) percent per month on all
Service Fee payments that are not paid during the time period set forth above. 
 Termination Agreement 

This agreement will continue in full force and effect for period twenty-four months after the mobilization unless and until PES is unable to perform under
the agreed terms and standards provided for in the contract. This provision includes an inability to provide agreed proppant as specified under the terms of the contract. If such event occurs, Petrohawk may elect to terminate the contract without
penalty by giving a 30 day notice to PES. 
 Warranties by PES 
 In this Agreement, PES warrants to Petrohawk that the Services performed by PES will be performed in accordance with the specifications, applicable codes, regulations, and sound industry practices.

 Insurance 
 Under this
Agreement, PES and Petrohawk will be required to maintain a policy of comprehensive general liability insurance, written on an occurrence basis, with limits of not less than $* combined single limit per occurrence, insuring against claims and
demands 

  
  

	*	CONFIDENTIAL PORTIONS HAVE BEEN OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION. ASTERISKS DENOTE OMISSIONS. 

 PLATINUM ENERGY SOLUTIONS, INC. HAS CLAIMED CONFIDENTIAL 

TREATMENT OF PORTIONS OF THIS AGREEMENT IN ACCORDANCE WITH 
 RULE 406 UNDER THE SECURITIES ACT OF 1933 
  

 
made for injuries to persons or property received in connection with the performance of their respective obligations under the Agreement. 
 Indemnity 
 The Agreement will provide that (i) PES will defend, indemnify, and hold
Petrohawk harmless from liability for loss, damage, or injuries to persons or property caused by any act or negligence by PES, its agents, contractors, employees, or assignees in connection with PES’ performance of its obligations under the
Agreement, and (ii) Petrohawk will defend, indemnify, and hold PES harmless from liability for loss, damage, or injuries to persons or property caused by the act or negligence of Petrohawk, its agents, contractors, employees, or assignees in
connection with Petrohawk’s performance of its obligations under the Agreement. 
 Disputed Invoices And Late Payments 

Petrohawk shall pay all invoices within 30 days after receipt except if Petrohawk disputes any part (the majority of or entire invoices cannot be
disputed) of an invoice, Petrohawk shall, within ten (10) days after receipt of the invoice, or 15 days from date of invoice, whichever is earlier, notify PES of the item disputed, specifying the reason therefore, and providing the amount
Petrohawk asserts should be the correct amount and payment of the disputed item only may be withheld until settlement of the dispute. All disputes not resolved by the parties within 30 days of such notice shall be submitted to an independent third
party selected by mutual agreement of the parties and such third party shall resolve the dispute within 15 days after such submission. The decision of such third party shall be binding on both parties. 

This Summary of Terms constitutes a statement of the present mutual intent of the parties with respect to the proposed transactions and is to be
considered a commitment and a legally binding agreement of the parties. 
 We look forward to working with you on this project. 

 

			
	Platinum Energy Solutions, Inc.
		
	By:	 	   /s/ Rodney Dartez

			
	Print Name:	 	   Rodney Dartez

			
	Title:	 	   COO

			
	Date:	 	   9/2/2010

			
	
	Petrohawk Energy
		
	By:	 	   /s/ Richard K.
Stoneburner

			
	Print Name:	 	   Richard K.
Stoneburner

			
	Title:	 	   President and COO

			
	Date:	 	   9/3/2010Employment Offer Letter

 Exhibit 10.1 
 

 
 September 20 th, 2011 

Linh Nguyen 
 10122 Prairie Springs Road

 San Diego, CA 92127 
 Dear Linh:

 The following sets forth the terms of your proposed employment with International Stem Cell Corporation (“the Company” or
“ISCO”). ISCO hereby offers you employment on the terms and conditions set forth below. 
  

	1.	Position. We offer you a position of Chief Financial Officer of ISCO and its wholly owned subsidiaries, Lifeline Cell Technology and Lifeline Skin Care. This
position reports directly to the Chief Executive Officer of the Company. The Chief Financial Officer works with the senior executives and the Board of Directors to establish financial and strategic goals for the Company, financing and investing
strategies and policies for the organization to meet business objectives and legal, regulatory and securities reporting requirements. Responsibilities include long-range financial planning and policies, accounting practices and procedures and the
Company’s relationship with the financial and shareholder communities, as well as other responsibilities as assigned by the CEO. The position overseas all aspects of financial planning and reporting including the controller function,
accounting, treasury and tax to ensure compliance with financial reporting standard, shareholder requirements and regulatory compliance. Responsibilities may be added, removed or otherwise modified, as the CEO or the Board may deem necessary.

  

	2.	Salary. You will receive a base salary of $6,153.85 per pay period, which amounts to an annual base salary of $160,000. Your status will be salaried exempt. If
you decide to join us, you will receive semi-monthly payments of salary, in accordance with the Company’s normal payroll procedures. 

  

	3.	Stock Options. In connection with the commencement of your employment, the Company will recommend that the Board of Directors grant you an option to purchase
100,000 shares of the Company’s Common Stock. The above mentioned Stock Options plan is subject to approval by the Company’s Compensation Committee. Exercise price for the Stock Options will be equal to fair market value on the date of the
grant. These option shares will vest over a four year period at 2% a month. All shares shall contain the standard provisions of the Company’s stock option plan. 

 

	4.	Compensation Approval. The above mentioned Salary and Stock Options are subject to approval by the Company’s Compensation Committee. The proposed
compensation terms will be presented to the Committee immediately upon your acceptance of this Employment Offer letter. 

  

                     
       
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	5.	Withholding Taxes. All forms of compensation referred to in this letter are subject to reduction to reflect applicable withholding and payroll taxes.

  

	6.	Employee Benefits. You will be eligible to receive employee benefits. The details of employee benefits will be explained in greater detail in a subsequent
documentation and Employee Handbook. You should note that the Company may modify job titles, salaries, and benefits from time to time as it deems necessary. 

 

	7.	Start Date. Upon satisfactory completion of background check, your employment will begin on October 3, 2011. This offer may be rescinded if there are
unsatisfactory results of the background check. 

  

	8.	Performance Evaluation. After the initial three (3) months of employment with the Company, your performance against your job responsibilities will be
evaluated by your direct supervisors. After your job performance has been deemed to be satisfactory, there will be regular follow-up performance evaluations annually or as in accordance with the Company’s Employee Handbook.

  

	9.	At Will Employment. Employment with International Stem Cell Corporation is at the mutual consent of the employee and the Company. Accordingly, while the Company
has every hope that employment relationships will be mutually beneficial and rewarding; employees and the Company retain the right to terminate the employment relationship at will, at any time, with or without cause. Please note that no individual
has the authority to make any contrary agreement or representation. Accordingly, this constitutes a final and fully binding integrated agreement with respect to the at-will nature of the employment relationship. 

 

	10.	Required Documents. You agree to abide by the Company’s policies and procedures, including those set forth in the Company’s Employee Handbook. You will
be required to read the Employment Handbook and sign the Acknowledgement of Receipt of Employment Handbook. You will be required to sign the necessary tax forms and to provide proof of your identity and authorization to work in the United States as
required by Federal immigration laws. You will also be required to sign the Employee Proprietary Information Agreement. 

  

	11.	Covenant Not to Compete. You acknowledge that by virtue of your employment pursuant to this Agreement, you will have access to valuable trade secrets and other
confidential business and proprietary information of the Company. Except with the prior written consent of the CEO, you will not, during your employment by the Company, engage in competition with the Company and/or any of its Affiliates, either
directly or indirectly in any manner or capacity, as adviser, principal, agent, affiliate, promoter, partner, officer, director, employee, stockholder, owner, co-owner, consultant, or otherwise, in any phase of the business of researching,
developing, manufacturing, or marketing of products or services which are in the same field of use or which otherwise compete with the products or services or proposed products or services of the Company and/or any of its Affiliates.

  

	12.	 Non-Solicitation. You shall not, either directly, or through others: (1) hire or participate in the hiring of any individual who is at that
time, or who was during the one (1) year immediately prior 

  

                     
       
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thereto, an employee, consultant or independent contractor of the Company or any Affiliate; (2) solicit or attempt to solicit any individual who is at that time, or who was during the one
(1) year immediately prior thereto, an employee, consultant or independent contractor of the Company or any Affiliate to terminate his or her relationship with the Company or any Affiliate in order to become an employee, consultant or
independent contractor to or for any person or business entity; or (3) solicit or attempt to solicit the business of any client, customer, supplier, service provider, vendor, or distributor of the Company or any Affiliate that is at that time,
or that was during the one (1) year immediately prior thereto, doing business with the Company or any Affiliate for the purpose of engaging in competition with the Company or any of its Affiliates. 

 

	13.	Return of Property. You further agree that you will upon termination of employment, return to the Company all books, records, computer files, copies of software,
manuals, customer lists and other written, typed, printed or electronic materials, whether furnished by the Company or prepared by you, which contain any information relating to the Company’s business. You agree that you will neither make nor
retain copies of such materials after termination of the employment and will destroy any additional copies of the materials listed above if you have them in your possession. 

 

	14.	Disclosure. We also ask that, if you have not already done so, you disclose to the Company any and all agreements relating to your prior employment that may
affect your eligibility to be employed by the Company or limit the manner in which you may be employed. It is the Company’s understanding that any such agreements will not prevent you from performing the duties of your position and you
represent that such is the case. Moreover, you agree that, during the term of your employment with the Company, you will not engage in any other employment, occupation, consulting or other business activity directly related to the business in which
the Company is now involved or becomes involved during the term of your employment, nor will you engage in any other activities that conflict with your obligations to the Company. Similarly, you agree not to bring any third party confidential
information to the Company, including that of your former employer, and that in performing your duties for the Company you will not in any way utilize any such information. 

 

	15.	Dispute Resolution. In the event of any dispute or claim relating to or arising out of the employment relationship between you and the Company, you and the
Company agree that all such disputes shall be fully and finally resolved by binding arbitration, paid for by the Company, before JAMS under its then-existing rules for the resolution of employment disputes. The exclusive venue for the arbitration
shall be San Diego, California. Any arbitration award may be entered in any court having competent jurisdiction. The prevailing party in any arbitration shall be entitled to an award of his or its reasonable attorney’s fees and expert witness
costs in addition to any other relief awarded by the trier of fact. 

  

	16.	Severability If any provision of this letter agreement shall be invalid or unenforceable, in whole or in part, the provision shall be deemed to be modified or
restricted to the extent and in the manner necessary to render the same valid and enforceable, or shall be deemed excised from this letter agreement, as the case may require, and this letter agreement shall be construed and enforced to the maximum
extent permitted by law as if such provision had been originally incorporated in this letter agreement as so modified or restricted, or as if the provision had not been originally incorporated in this letter agreement, as the case may be.

  

                     
       
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	17.	Headings. Section headings in this letter agreement are for convenience only and shall be given no effect in the construction or interpretation of this letter
agreement. 

 This letter, along with any agreements relating to proprietary rights between you and the Company, sets forth the
terms of your employment with the Company and supersedes any prior representations or agreements including, but not limited to, any representations made during your recruitment, interviews or pre-employment negotiations, whether written or oral.
This letter may not be modified or amended except by a written agreement signed by the Company and you. 
 We look forward to you joining our
effort and hope the opportunity will be mutually rewarding. To confirm that you agree to the terms stated in this letter, please sign, date and return the enclosed copy of this letter by September 22, 2011. 

Congratulations! 
 Sincerely, 

 

			
	International Stem Cell Corporation
		
	By:	 	 /s/ Andrey Semechkin

	
	Andrey Semechkin, CEO

  
  
 This will acknowledge my acceptance of this offer of employment. 
  

					
	 /s/ Linh Nguyen
	  		  	Date:         9/20/2011            
	(Signature)	  		  	
			
	 Linh Nguyen
	  		  	SS#                            
                 
	(Print Name)	  		  	

  

                     
       
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