Document:

Exhibit 10.25 

PURDUE TECHNOLOGY CENTER
 3000 kent avenue
 west lafayette, indiana 47906
  
EXTENSION OF LEASE 

THIS EXTENSION OF LEASE is made this 9th day of December, 2014 by and between PURDUE RESEARCH FOUNDATION (“Landlord”), an Indiana corporation (formed and existing under the Indiana Foundation or Holding Companies Act, Acts of 1921, ch. 246), and ENDOCYTE (“Tenant”). Landlord and Tenant have previously entered into a lease (the “Lease”) dated January 30, 2013, with a First Amendment dated May 17, 2013, Second Amendment dated July 7, 2013, Extension of Lease dated November 20, 2013, Third Amendment dated January 31, 2014 and Fourth Amendment dated April 1, 2014, for space outlined
on Exhibit A of this Extension of Lease, at the Purdue Technology Center, located at 3000 Kent Avenue, West Lafayette, Indiana 47906. 

In consideration of mutual benefits to be derived by the parties, it is agreed that the Lease Term provided under the Lease is hereby extended for a period of Twelve (12) months, commencing January 1, 2015, and expiring December 31, 2015 (the “Extension Period”). All other terms and conditions of the Lease shall be applicable to such Extension Period(s), except as follows: 

		1.	The Monthly Rent Installment for leased space shall be $48,781.14 ($17.71 × 16, 724 square feet of office space, and $33.29 × 8,687 square feet of lab space/12 months) and shall remain in effect during the Extension Period unless otherwise altered under the provisions of Section 4 of the Lease. 

		2.	The Monthly Rent for the leased furniture shall be $886.31 for the months of January, February and March 2015 only. Furniture rent shall end on March 31, 2015. 

		3.	The Rent for leased space and leased furniture shall be $588,032.61 ($48,781.14 × 12 months plus $886.31 × 3 months) and shall remain in effect during the Extension Period unless otherwise altered under the provisions of Section 4 of the Lease. 

It is further agreed that all other terms and conditions of the Lease are hereby affirmed and shall remain in full force and effect during the Extension Period. 

WITNESS the signatures and seals of the above parties as of the day and year first above written. 

		 	
	LANDLORD:	 	PURDUE RESEARCH FOUNDATION
 an Indiana corporation (formed and existing under the Indiana Foundation or Holding Companies Act, Acts of 1921, ch. 246)
	  	 	By:
/s/ David L. Hodde

David L. Hodde
 Assistant Vice President
 Director of Real Estate

ATTEST: 

		By:	/s/ Gregory S. Napier

Gregory S. Napier
 Director — Physical Facilities and Purdue Research Parks 

		 	
	TENANT:	 	ENDOCYTE

	  	 	By:
/s/ P. Ron Ellis

P. Ron Ellis
 President/CEO

    	 

    	 

    

 

EXHIBIT A
 LEASED PREMISES 

		 		 	
	Unit A1-200	 	Office Space	 	9,131 square feet
	Unit B1-100	 	Office Space	 	1,715 square feet
	Unit B1-008	 	Office Space	 	80 square feet
	Unit B1-200	 	Office Space	 	168 square feet
	Unit B1-201	 	Office Space	 	230 square feet
	Unit B1-202	 	Office Space	 	224 square feet
	Unit B1-203	 	Office Space	 	363 square feet
	Unit B1-300	 	Office Space	 	906 square feet
	Unit B1-400	 	Office Space	 	(included in A1-200)
	Unit A2-101	 	Office Space	 	253 square feet
	Unit A2-104	 	Office Space	 	216 square feet
	Unit A2-105	 	Office Space	 	161 square feet
	Unit A2-108	 	Office Space	 	215 square feet
	Unit A2-301	 	Office Space	 	325 square feet
	Unit A2-304	 	Office Space	 	216 square feet
	Unit A2-305	 	Office Space	 	161 square feet
	Unit B2-300	 	Office Space	 	149 square feet
	Unit B2-400	 	Office Space	 	1,513 square feet
	Unit B2-500	 	Office Space	 	148 square feet
	Unit B2-603	 	Office Space	 	253 square feet
	Unit B2-700	 	Office Space	 	148 square feet
	Unit B2-900	 	Office Space	 	149 square feet
	Total	 	Office Space	 	16,724 square feet
	Unit A1-100	 	Lab Space	 	4,069 square feet
	Unit B1-500	 	Lab Space	 	690 square feet
	Unit A2-102	 	Lab Space	 	367 square feet
	Unit A2-103	 	Lab Space	 	325 square feet
	Unit A2-106	 	Lab Space	 	495 square feet
	Unit A2-107	 	Lab Space	 	477 square feet
	Unit A2-302	 	Lab Space	 	339 square feet
	Unit A2-303	 	Lab Space	 	409 square feet
	Unit B2-300	 	Lab Space	 	379 square feet
	Unit B2-500	 	Lab Space	 	380 square feet
	Unit B2-700	 	Lab Space	 	378 square feet
	Unit B2-900	 	Lab Space	 	379 square feet
	Total	 	Lab Space	 	8,687 square feetEX-10.11

 Exhibit 10.11 

SECOND AMENDMENT TO COMMERCIAL LEASE 

This SECOND AMENDMENT TO COMMERCIAL LEASE (the “Second Amendment”) is effective as of the
23rd day of December, 2014 by and between BARTMANNS, PERALES & DOLTER, LLC (“Lessor” or “BP&D”) and RUBICON TECHNOLOGY, INC. (“Lessee” or
“Rubicon”). 
 PRELIMINARY STATEMENTS 
  

	 	A.	Rubicon is the lessee of certain premises described as 9901-9923 Franklin Avenue, Franklin Park, Illinois (the “Premises”) pursuant to a certain Commercial Lease dated December 23, 2004 (the
“Lease”) for a term of ten years commencing with the Commencement Date (as defined in the Lease) as amended by that certain Amendment to Commercial Lease dated May 6, 2005 (“First Amendment”).

  

	 	B.	BP&D and Rubicon desire to amend the Lease as set forth herein. 

 NOW, THEREFORE, in
consideration of the foregoing and in consideration of the mutual obligations and benefits to be derived by the parties hereto, and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties
hereto agree as follows: 
  

	 	1.	Preliminary Statements. The Preliminary Statements set forth above are hereby incorporated by reference as a material part of this Second Amendment and shall not be deemed mere recitals. 

 

	 	2.	Term Extended. The parties hereto confirm that the Commencement Date of the Lease is August 1, 2005. The parties agree to extend the Term of the Lease as set forth in Section 1 of the Lease for
an additional 3-year period commencing August 1, 2015 and ending July 31, 2018 (“Extended Period”). All references in the Lease to the “Term” shall be deemed to include the Extended Period. 

 

	 	3.	Base Rent Adjusted. The base rent for the Premises as set forth in Section 2 of the Lease for the Extended Period will be reduced from $282,000 per lease year, payable in equal monthly installments of
$23,500 payable on the first day of each month to $187,200 per lease year, payable in equal monthly installments of $15,600 per month payable on the first day of each month of the Extended Period. The base rent as provided in Section 2 of the
Lease shall remain unchanged from the date hereof until the start of the Extended Period. 

  

	 	4.	Additional Rent. Lessee shall continue to pay the remaining additional rent as provided in Section 3 of the Lease until the start of the Extended Period. Lessee shall have no obligation for any
additional rent as provided in Section 3 of the Lease for the Extended Period. This change shall have no effect on the Lessee’s other obligations under the Lease, including, without limitation, those obligations set forth in Sections 6, 7,
8 and 17 of the Lease. 

  

	 	5.	Security Deposit. The first sentence of Section 5 of the Lease is replaced in its entirety with the following: “Lessee shall maintain a Security Deposit at all times during the Term hereof with
Lessor equal to $23,500 (“Security Deposit”).” 

  

	 	6.	Special Conditions. Section 43 of the Lease is replaced in its entirety with the following: “Lessor has good and marketable title to the Premises.” 

	 	7.	Remainder of Lease; Binding Effect. Except as specifically modified by this Second Amendment, the provisions of the Lease, as amended by the First Amendment, shall remain in full force and effect,
unchanged or modified by this Second Amendment. This Second Amendment shall be binding upon and inure to the benefit of the parties hereto, their respective successors and permitted assigns. 

 

	 	8.	Counterparts. This Second Amendment may be executed in any number of counter parts and by different parties hereto on separate counterparts, each of which when so executed and delivered shall be an
original document, but all of which counterparts shall together constitute one and the same instrument. This Second Amendment shall not be effective unless and until executed by all parties hereto. 

IN WITNESS WHEREOF, the parties hereto have executed this Second Amendment on the day and year first written above, the corporate party or
parties by its or their proper officers thereto duly authorized. 
 REMAINDER OF PAGE INTENTIONALLY LEFT BLANK 

Signature page follows. 

			
	“BP&D”
	
	Bartmanns, Perales & Dolter, LLC
		
	By:		 /s/ Robert Bartmann

			Robert Bartmann, Manager
	
	“RUBICON”
	
	Rubicon Technology, Inc.
		
	By:		 /s/ Mardel A. Graffy

	Name:		Mardel A. Graffy
	Title:		Its Vice President and CFOEX-10.13

 Exhibit 10.13 

SECOND AMENDMENT TO INDUSTRIAL BUILDING LEASE 

This Second Amendment to Industrial Building Lease (“Second Amendment”) is made as of the 1st day of July, 2014, by and between
Philip J. Latoria, Jr. (“Lessor”) and Rubicon Technology, Inc., a Delaware corporation (“Lessee”). 
 RECITALS

 A. Lessor and Lessee are parties to an Industrial Building Lease, dated July 18, 2007, as amended by a First Amendment to
Building Lease, dated September 12, 2007 (collectively, the “Lease”), for the property located at 900 Green Street, Bensenville, Illinois 60106, Illinois (the “Premises”). 

B. Lessor and Lessee desire to amend the Lease as provided in this Second Amendment to extend the Term and to modify the Base Rent payable by
Lessee. 
 NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, Lessor
and Lessee agree as follows: 
 1. Definitions. Unless otherwise defined in this Second Amendment, all capitalized terms used herein
shall have the same meanings as are ascribed to them in the Lease. 
 2. Term. The Term of the Lease shall extend through
June 30, 2019. All terms and conditions in the Lease relating to Lessee’s options to extend the Term are superseded by this Second Amendment. 

3. Base Rent. The table of Base Rent set forth in the Lease is hereby deleted in its entirety. The Base Rent payable by Lessee to
Lessor or Lessor’s agent from the date of this Second Amendment for the balance of the Term shall be $24,145.33 per month (being $9.50 per square foot or $289,750 for each twelve month period). 

4. No Defaults or Breaches. Lessor and Lessee each hereby acknowledges to the other that, as of the date hereof, the Lease is in full
force and effect and that neither Lessor nor Lessee is in default or breach of any term or covenant of the Lease. 
 IN WITNESS WHEREOF, the undersigned
have executed this Second Amendment as of the day and year stated in the introduction hereto. 
  

					
	 Lessee:
		Lessor:
		
	Rubicon Technology, Inc.		
			
	By:		 /s/ Raja M. Parvez
		 /s/ Philip J. Latoria

			Raja M. Parvez, President		Philip J. Latoria

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