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Subcontract Agreement No. 1213126J-000.620027 , dated July 16, 2018, by and between SPEARHEAD CONSTRUCTION LLC and Skanska Walsh Design-Build JV for Furnish and Install Building Framing and Partitions for Pedestrian Bridge B at LaGuardia Airport Central Terminal Building Replacement Project, New York, LaGuardia Airport Queens, New York.

1. Subcontractor, as an independent contractor, agrees to perform and complete the work required by this Subcontract, which generally consists of Furnish and Install Building Framing and Partitions for Pedestrian Bridge B (the “ Work ”).

2. As full consideration for complete performance of the Work, and except for increases or decreases by Change Order as provided for in Exhibit E, Subcontractor shall be paid Lump Sum the amount of Two Million Six Hundred Thirty Thousand Six Hundred Sixty Four and 00/100 Dollars , $ 2,630,664 (the “ Subcontract Amount ”). 3. If listed below, subcontractor is required to provide performance and payment bonds (P&P) securing the performance of the Work and the payment of Sub-subcontractors. If listed below, subcontractor is required to enroll in Contractor’s Subcontractor Default Insurance program.

Bonding for this agreement: Subcontractor Default Insurance

4. Subcontractor shall perform the Work in accordance with and comply with all requirements contained in the following Exhibits, each of which is included as an integral part of the Subcontract:

SUBCONTRACT EXHIBITS Exhibit A - Scope of Work - Supply and Clarifications, Qualifications Exhibit B - Drawings and Sketches, Specifications, Addenda and Other Documents Exhibit C - Alternates, Unit Prices and Labor Rates

Exhibit C-1 - Exhibit C.1 - Labor Rates Exhibit D - Project Schedule/Milestones Exhibit E - Standard Subcontract Terms and Conditions Exhibit F - Code of Conduct

Exhibit F-1 - LGA - Contractor's Code of Conduct Exhibit G - Standard Insurance Requirements Exhibit G-1 - Skanska Walsh Joint Venture - LGA CCIP Insurance Manual (Add Alternate) - Exhibit G1 V9 (8.14.17) Exhibit H - Standard Interim Estimate for Payment, Waiver and Release

Exhibit I - Standard Final Estimate for Payment, Unconditional Waiver and Release Exhibit J - Standard Subcontractor Environmental Health and Safety Requirements Exhibit K - Standard Change Order Exhibit P - Developer's Code of Conduct Exhibit R - Project Specific Quality Management Program Exhibit T, T1, T2, T3 - Disadvantaged Enterprises Participation Requirements Exhibit V - Guarantee to Owner Exhibit W - Owner Confidentiality and Non-Disclosure Requirements Exhibit X - Site Requirements and Logistics Exhibit X-01-LGA - Site Logistics

Exhibit X-07-LGA - Site Logistics Plan CB Exhibit X-07.1 - Access Route to Concourse B

Exhibit X-07.2 - Concourse B Logistics Axons 160606 V2.0 Exhibit PS-01-LGA - Requirements and Provisions for Work Exhibit PS-02-LGA - Port Authority Prevailing Wages Requirements Exhibit PS-03-LGA - Certificates and Statements Exhibit PS-04-LGA - Port Authority EEO Requirements Exhibit PS-05-LGA - ST-124 Certificates of Capital Improvement

Exhibit PS-06-LGA - Design Build Contract exhibit 5 - Disclosed Environmental Reports Exhibit PS-07-LGA - Design Build Contract exhibit 6 - Additional Environmental Requirements Exhibit PS-08-LGA - Project Labor Agreement Exhibit PS-08.5 - LGA PLA Schedule B - LOCAL UNION DISTRICT COUNCIL OF NYC CARPENTERS Exhibit PS-09-LGA - Design Build Contract exhibit A-31, Extended Warranties Exhibit PS-10-LGA - SW Electronic Payment Recommendation Exhibit PS-11-LGA - LGA Trade Modeling and Coordination Requirements rev08

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Subcontract Agreement Rev. 7 dated 9/13/2016

Version 4.0