EXHIBIT B
GENERAL SERVICES ADMINISTRATION          LEASE AMENDMENT No. 3 
PUBLIC BUILDINGS SERVICE 
TO LEASE NO.  GS-10B-06958 
LEASE AMENDMENT                BLDG NO. WA7858ZZ 
ADDRESS OF PREMISES                             PDN Number: N/A 
SeaTac International Airport, Port of Seattle, Main Terminal 
17801 Pacific Highway South 
Seattle, WA 98158-1200 
THIS AMENDMENT is made and entered into between The Port of Seattle 
whose address is:     Port of Seattle/SeaTac International Airport, Aviation Properties, 17801 Pacific Highway South, Room
A6012M, Seattle, WA 98158-1200
WHEREAS, the parties hereto desire to amend the above Lease to extend the term of the lease for a period of 36 months, state
the rent for the additional term, update the Lessor's address, and amend the payee information.
NOW THEREFORE, these parties for good and valuable consideration, the receipt and sufficiency of which is hereby
acknowledged,  covenant  and  agree  that  the  said  Lease  is  amended,  effective  January  20,  2019  as  follows:
Paragraphs 2, 3, and 4 are hereby deleted and replaced below, Exhibit 3A  Rental Rates is hereby added, and FAR 52.232-33
PAYMENT BY ELECTRONIC FUNDS TRANSFER - SYSTEM FOR AWARD MANAGEMENT (JUL 2013) is also hereby added
to the General Clauses, incorporated by reference and updates the payee information.
Lessor Address is: Port of Seattle/SeaTac International Airport, Aviation Properties, 17801 Pacific Highway South, Room
A6012M, Seattle, WA 98158-1200
2. TO HAVE AND TO HOLD the said premises with their appurtenances for the term beginning on January 22, 2009 through
January 21, 2022, subject to termination rights as are hereinafter set forth.
Surrender of Premises: At the termination of this Lease, Lessee shall promptly and peaceably surrender possession of the
Premises to the Port. The Premises shall be returned in substantially the same condition as received (unless altered by Lessee
with Port's consent), reasonable wear and tear excepted.
3. Rent shall be payable in arrears, in accordance with Exhibit 3A  Rental Rates (attached), and will be due on the first workday of
each month. When the date for commencement of the lease falls after the 15th day of the month, the initial rental payment shall be
due on the first workday of the second month following the commencement date. Rent for a period of less than a month shall be
prorated.

4.The Government shall have a one-time option to terminate this lease in whole or in part at any time on or after March 1, 2019.

This Lease Amendment contains 2 pages, and Exhibit 3A  Rental Rates (1 page).
All other terms and conditions of the lease shall remain in force and effect.
FOR THE LESSOR:                                FOR THE GOVERNMENT: 
IN WITNESS WHEREOF, the parties subscribed their names as of the below date.
Signature: ______________________________ 
Name:  ______________________________ Signature: ______________________________ 
Title: ______________________________         Name: ______________________________ 
Entity Name: ______________________________         Title:      Lease Contracting Officer 
Date: ______________________________        GSA, Public Buildings Service,
Date: ______________________________ 

WITNESSED FOR THE LESSOR BY: 
Signature: ______________________________ 
Name: ______________________________ 
Title: ______________________________ 
Date: ______________________________ 
Lease Amendment Form 12/12

Lease Amendment No. 3  GS-10B-06958   PAGE  2 of 2 
Rent shall be paid to Lessor by electronic funds transfer in accordance with the provisions of the General Clauses. Rent shall be
payable to the Payee designated by the Lessor in the System for Award Management (SAM). If the payee is different from the
Lessor, both payee and Lessor must be registered and active in SAM. 
4. The Government may terminate this lease in whole or in part at any time on or after March 1, 2019. This is a one-time option and
once exercised, no additional reductions or terminations are available during the term of the lease. 



















INITIALS: ___________     & ___________ 
LESSOR               GOV'T 
Lease Amendment Form 12/12

GS-10B-06958 Exhibit 3A - Rental Rates
JANITORIAL AND    TOTAL
EFFECTIVE   RENTAL                               MONTHLY    ANNUAL
C1 Space        RSF                            MAINTENANCE     RENTAL
DATE   RATE/RSF/YR                            RENT      RENT
RATE/RSF/YR   RATE/RSF/YR
Total                    10,756    1/22/2019        $128.85            $10.00         $138.85  $124,455.88  $1,493,470.60
JANITORIAL AND    TOTAL
EFFECTIVE   RENTAL                               MONTHLY    ANNUAL
NAME       RSF                     MAINTENANCE   RENTAL
DATE   RATE/RSF/YR                            RENT      RENT
RATE/RSF/YR   RATE/RSF/YR
Total                    10,756    1/22/2020        $153.26            $10.00         $163.26  $146,335.38  $1,756,024.56
JANITORIAL AND    TOTAL
EFFECTIVE   RENTAL                               MONTHLY    ANNUAL
NAME       RSF                     MAINTENANCE   RENTAL
DATE   RATE/RSF/YR                            RENT      RENT
RATE/RSF/YR   RATE/RSF/YR
Total                    10,756    1/22/2021        $161.66            $10.00         $171.66  $153,864.58  $1,846,374.96

















Page 1 of 1     INITIALS:  ___________ & ___________
LESSOR           GOV'T