STONEBROOK HOMES, INC.

THIS FIRST AMENDMENT TO LEASE dated as of this ​ day of ​August​, 2018 by and between BP BAY COLONY LLC, a Delaware limited liability company (“Landlord”), and ARSANIS, INC., a Delaware corporation (“Tenant”).

Colony American Homes, Inc. and any affiliate thereof with “Colony” as part of its name

AMERICAN ELECTRIC VEHICLES AND BATTERY TECHNOLOGY, INC. (“US.EV”), a company organized and existing under the laws of the State of California, with its principal offices at 370 Amapola Avenue Suite 200-A, Torrance, CA 90501; and

Colony American Homes, Inc. and any affiliate thereof with “Colony” as part of its name

WASHINGTON HOMES, INC.

Colony American Homes, Inc. and any affiliate thereof with “Colony” as part of its name

American Data. As between You and American (i.e., without addressing rights of Third Parties), American Data is solely owned by American, including all rights, title and interest in and to American Data. Except for any Permitted Data Uses in the Agreement, You may not use, edit, modify, create derivatives, combinations or compilations of, combine, associate, synthesize, re-identify, reverse engineer, reproduce, display, distribute, disclose, sell or otherwise Process any American Data. You agree not to breach any restrictions, if any, that apply to Other American Data in the Agreement or any other agreements to which You are a party. In consideration of the business relationship being established by the Agreement, You agree not to use American Data or Other American Data in a manner that is harmful to American. You are not authorized to agree to Third Party terms and conditions that would assign, transfer, or license American Data, Other American Data or American’s proprietary rights in American Data or Other American Data to a Third Party or otherwise negatively impact American’s proprietary rights to American Data or Other American Data, unless such Third Party arrangements are identified as being Permitted Data Uses and have been approved by American.

American Instructions. You agree that You, and any of Your employees, agents and contractors acting under Your authority who have access to American Data, will Process American Data only: # on behalf of American and in accordance with Data Laws and as specifically documented and instructed by American (including with regard to the transfers of American Data to a third country or an international organization); or # as otherwise required by Data Law to which You are subject, in which case You shall promptly provide American with Notice of that legal requirement before Processing American Data, unless that law prohibits such notification on important grounds of public interest.

Colony American Homes, Inc. and any affiliate thereof with “Colony” as part of its name