First Amendment of Lease, between Pearland Economic Development Corporation and Cardiovascular Systems, Inc., dated November 10, 2017

Recitals. The Recitals are hereby incorporated herein by reference. Capitalized terms used herein shall have the meanings given to them in the Lease unless otherwise defined herein.

Sec. 1 Leased Premises. The Leased Premises shall be redefined as: (i) the tract of land in Pearland, Texas (the “Land”), more particularly depicted on Exhibit A attached hereto, together with any and all easements, rights and appurtenances appertaining to same, and (ii) that certain building (the “Building”) previously constructed by Landlord and containing approximately 46,000 square feet. For greater certainty, Landlord and Tenant agree that the term “Leased Premises” shall include, but not be limited to, the Improvements.

Sec. 51 Purchase Option. Tenant’s Purchase Option set forth in Section 51 of the Lease shall only apply to the redefined Leased Premised depicted on Exhibit A attached hereto.

Sec. 54 Tenant’s Right of First Refusal. Tenant’s right of first refusal set forth in Section 54 of the Lease shall only apply to those portions of the First Expansion Option Land not included in the Adjacent Property as depicted on Exhibit A attached hereto.

Parking Improvements – Landlord, at its sole cost and expense, shall construct the Parking Improvements on the Leased Premises. Landlord shall commence construction of the

Platting – Prior to Landlord’s sale of the Adjacent Property, Landlord shall replat the Leased Premises and the Adjacent Property in accordance with City of Pearland platting requirements, including the dedication of all necessary easements. Tenant agrees cooperate with Landlord to effectuate the replatting of Landlord’s Property to carry out the terms of this Lease Amendment, and no required approvals from Tenant shall be unreasonably withheld; provided, however, in no event shall the replat adversely affect (a) Tenant’s ability to access the Leased Premises or (b) Tenant’s business operations at the Leased Premises.

Contingency – The terms of this Lease Amendment shall be contingent upon Landlord’s closing on the sale of the Adjacent Property on or before June 1, 2018. Landlord shall provide to Tenant written notice of the closing of such sale within five (5) days of the closing date. If such closing does not occur on or before June 1, 2018, then this Amendment shall be null and void. Notwithstanding the foregoing, Landlord’s obligations to make the Building Repairs, as defined in Section 8 herein, shall not be contingent on the sale of the Adjacent Property and shall survive any termination of this Amendment.

Building Repairs – Landlord, at its sole cost and expense, shall have all repairs completed as presented in Exhibit C by February 28, 2018 (the “Building Repairs”). If Landlord fails to complete the Building Repairs by February 28, 2018, then Tenant, in addition to all rights and remedies available under the Lease upon Landlord’s default, shall have the rights set forth in Section 55 of the Lease.

Section 49 Renewal Options –

The first paragraph of Section 49 shall be amended to read as follows: “Tenant shall have, and is hereby granted, the options (the “Renewal Options”) to extend the Term of this Lease Agreement for three (3) consecutive additional periods (as applicable, the “Extended Term”). The first Extended Term shall be for a period of one (1) year and shall only be available to Tenant following the initial Term of this Lease Agreement. The second and third Extended Terms shall be for a period of five (5) years each, and shall be available to Tenant following the first Extended Term. If, at the conclusion of the initial Term, Tenant elects to waive Tenant’s right to the first Extended Term of one (1) year, Tenant shall have the option to transition directly into the second Extended Term of five (years). Each of the Extended Terms shall be subject to the following terms, conditions and provisions:

The terms of Section 49 B of the Lease Agreement shall continue to apply to the Renewal Options, except that the Annual Base Rent for the first Extended Term shall be $10.00 per square foot.