18300 Von Karman Ave., Suite 700 Irvine, California 92612 TEL: 949 ###-###-#### FAX: 949 ###-###-#### TOLL-FREE: 888 ###-###-#### ***@***
Exhibit 10.3
September 10,2012
CONFIDENTIAL
COMBIMATRIX CORPORATION
310 Goddard,Suite 150
Irvine,CA 92618
Attention: Judd Jessup
RE: Addendum to Engagement Letter dated July 13, 2012
Dear Mr. Jessup:
This letter shall serve as an addendum to the engagement agreement (the Engagement Letter) entered into by and between C. K. Cooper & Company, Inc. (CKCC) and CombiMatrix Corporation (the Company) dated July 13, 2012.
The term under the Engagement Letter shall be changed to an expiration date of October 10, 2012 instead of July 31, 2012 with the option of 45-day extension (September 10, 2012) as it currently reads. The effect of this change will be to extend the period of time under which the other terms and conditions of the Engagement Agreement shall be in force between CKCC and the Company.
If this addendum is acceptable, please acknowledge by signing below No other terms or conditions of the Engagement Agreement are being modified as a result of the execution of this addendum.
| Very truly yours, | |||||
| C.K. COOPER & COMPANY, INC. | |||||
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| By: | /s/ Alexander G. Montano | ||||
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| Name: | Alexander G. Montano | |||
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| Title: | Managing Director | |||
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Accepted and agreed to as of the date first written above: |
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COMBIMATRIX CORPORATION |
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By: | /s/ Judd Jessup |
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| Name: | Judd Jessup |
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| Title: | Chief Executive Officer & President |
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18300 Von Karman Ave., Suite 700 · Irvine, California 92612
TEL: 949 ###-###-#### · FAX: 949 ###-###-#### · TOLL-FREE: 888 ###-###-#### · ***@***