Common use of SUBJECTS REFERRED TO Clause in Contracts

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subjects shall incorporate the data stated for that subject in this Section 1.1. LANDLORD: Arthxx X. Xxxxxxxxx xxx John X. Xxxxxxx, Class A Trustees, and Howaxx Xxxck and Marc X. Xxxx, Xxass B Trustees, all as Trustees of Michxxxxx Xxxm-Westford Technology Park Trust, under Declaration of Trust dated October 1, 1984, recorded with the Middlesex North District Registry of Deeds in Book 2863, Page 235 MANAGING AGENT: The Gutixxxxx Xxxpany LANDLORD'S AND MANAGING Burlington Office Park AGENT'S ADDRESS: One Xxxx Xxxxxx Xxxxxxxxxx, Xxxxxxxxxxxxx 00000 LANDLORD'S REPRESENTATIVE: John X. Xxxxxxx LANDLORD'S CONSTRUCTION Artuxx X. Xxxxxxxxx, Xxhn X. Xxxxxxx REPRESENTATIVES: or P. Agusxxx Xxxx TENANT: Unisphere Solutions, Inc. TENANT'S ADDRESS Prior to Term Commencement Date: (FOR NOTICE & BILLING): Unisphere Solutions, Inc. 5 Caxxxxxx Xxxx Xxxxxxxx, XX 00000 After Term Commencement Date: Unisphere Solutions, Inc. 11 Txxxxxxxxx Xxxx Xxxxx Xxxxxxxx, Xxxxxxxxxxxxx 00000 TENANT'S REPRESENTATIVE(S): Robexx X. Xxxxxx TENANT'S CONSTRUCTION REPRESENTATIVE(S): Andrxx Xxxxxx BUILDING: Three (3) story building consisting of 150,000 rentable square feet constructed upon the land described on Exhibit A attached hereto (the "Lot") in accordance with the final Landlord's Plans and Tenant's Plans (as defined in Article III hereof, and any replacements thereof) and any alterations and additions thereto, including the Tenant's Work (as hereinafter defined), and including any expansion pursuant to Exhibit R. The legal description of the Lot is attached hereto as Exhibit A-1. RENTABLE FLOOR AREA OF 150,000 gross square feet, as further TENANT'S SPACE: described in Exhibit A TOTAL RENTABLE FLOOR AREA 150,000 gross square feet, as may be OF THE BUILDING: expanded pursuant to Exhibit R SCHEDULED TENANT'S DESIGN July 15, 2000, subject to the COMPLETION DATE: provisions of Section 3.1 SCHEDULED TERM January 31, 2001 COMMENCEMENT DATE: OUTSIDE DELIVERY DATE: Per Section 3.2 TERM EXPIRATION DATE: Ten (10) years following the Term Commencement Date determined in accordance with Section 3.2, subject to extension in accordance with Exhibit F. TERM: Ten (10) years, subject to extension in accordance with Exhibit F.

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subjects shall incorporate the data stated for that subject in this Section 1.1. LANDLORD: Arthxx Xxxxxx X. Xxxxxxxxx xxx John and Xxxx X. Xxxxxxx, Class A Trustees, and Howaxx Xxxck and Marc X. Xxxx, Xxass B Trustees, all as Trustees of Michxxxxx Xxxm-Westford Technology Park Wayside Realty Trust, under Declaration of Trust u/d/t dated October 1August 31, 1984, 1995 and recorded with the Middlesex North District South Registry of Deeds in Book 286325628, Page 235 331. MANAGING AGENT: The Gutixxxxx Xxxpany Xxxxxxxxx Company LANDLORD'S AND MANAGING Burlington Office Park AGENT'S ADDRESS: One Burlington Xxxxxx Xxxx Xxx Xxxx Xxxxxx Xxxxxxxxxx, Xxxxxxxxxxxxx XX 00000 LANDLORD'S REPRESENTATIVE: John Xxxx X. Xxxxxxx LANDLORD'S CONSTRUCTION Artuxx REPRESENTATIVES: Xxxxxx X. Xxxxxxxxx, Xxhn Xxxx X. Xxxxxxx REPRESENTATIVES: or P. Agusxxx Xxxxxxx Xxxx TENANT: Unisphere SolutionsOpen Market, Inc. TENANT'S ADDRESS (FOR NOTICE & BILLING): Prior to Term Commencement Date: (FOR NOTICE & BILLING): Unisphere Solutions, Inc. 5 Caxxxxxx Xxxx Xxxxxxxx000 Xxxxx Xxxxxx Xxxxxxxxx, XX 00000 After Term Commencement Date: Unisphere SolutionsXxx Xxxxxxx Xxxx Xxxxxxxxxx, Inc. 11 Txxxxxxxxx Xxxx Xxxxx Xxxxxxxx, Xxxxxxxxxxxxx XX 00000 TENANT'S REPRESENTATIVE(S): Robexx X. Xxxxxx REPRESENTATIVE: Chief Financial Officer and General Counsel TENANT'S CONSTRUCTION REPRESENTATIVE(S): Andrxx REPRESENTATIVES: Xxxxxx Xxxxxx, Xxxx Xxxxxxxxx or Xxxxx Xxxxxx BUILDING: Three Four (34) story building consisting of 150,000 rentable 120,268 square feet to be constructed upon the land described northwest corner of the lot identified as Lot A on Exhibit A attached hereto (the "Lot") in accordance with the final Landlord's Plans and Tenant's Plans (as defined in Article III hereof, and any replacements thereof) and any alterations and additions thereto, including the Tenant's Work (as hereinafter defined), and including any expansion pursuant to Exhibit R. The legal description of the Lot is attached hereto as Exhibit A-1. RENTABLE FLOOR AREA OF 150,000 gross square feet, as further TENANT'S SPACE: described in Exhibit A TOTAL RENTABLE FLOOR AREA 150,000 gross square feet, as may be OF THE BUILDING: expanded pursuant to Exhibit R SCHEDULED TENANT'S DESIGN July 15, 2000, subject to the COMPLETION DATE: provisions of Section 3.1 SCHEDULED TERM January 31, 2001 COMMENCEMENT DATE: OUTSIDE DELIVERY DATE: Per Section 3.2 TERM EXPIRATION DATE: Ten (10) years following the Term Commencement Date determined in accordance with Section 3.2, subject to extension in accordance with Exhibit F. TERM: Ten (10) years, subject to extension in accordance with Exhibit F..

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subjects shall be construed to incorporate the data stated for that subject in this Section 1.1. : LANDLORD: Arthxx Richxxx X. Xxxxxxxxx Xxxexxxx, Xxxx X, Xxll, XX, Bert Xxxxxx xxx John X. XxxxxxxH. Vxxxxxx Xxxxxxx XXX, Class A Trustees, and Howaxx Xxxck and Marc X. Xxxx, Xxass B Trustees, all as Trustees of Michxxxxx Xxxm-Westford Technology Park TrustXXUSTEES OF KSA REALTY TRUST, under Declaration of Trust dated October 1June 11, 1984, 1982 and recorded with the Middlesex North District South Registry of Deeds in Book 286314635, Page 235 542. MANAGING AGENT: The Gutixxxxx Xxxpany CH & S Limited Partnership LANDLORD'S AND & MANAGING Burlington Office Park c/o Carpenter & Company, Inc. AGENT'S ADDRESS: One 175 Xxxxxxx Xxxxxx, Xxxxx 000 Xxxxxx, XX 00000 XXNDLORD' S REPRESENTATIVE: Gary X. Xxxxxxx XXNANT: Cambridge Energy Research Associates Limited Partnership, a Delaware limited partnership TENAXX'X XDDRESS (FOR 20 Uxxxxxxxxx Xxxx Xxxxxx XxxxxxxxxxXXXXXX XXX XXXXXXX): Xxxxxxxxx, Xxxxxxxxxxxxx 00000 LANDLORDXXNANT'S REPRESENTATIVE: John X. Xxxxxxx LANDLORD'S CONSTRUCTION Artuxx X. Alicx Xxxxxxxxxx XXILDING ADDRESS: 20 Uxxxxxxxxx Xxxx Xxxxxxxxx, Xxhn X. Xxxxxxx REPRESENTATIVES: or P. Agusxxx Xxxx TENANT: Unisphere Solutions, Inc. TENANT'S ADDRESS Prior to Term Commencement Date: (FOR NOTICE & BILLING): Unisphere Solutions, Inc. 5 Caxxxxxx Xxxx Xxxxxxxx, XX 00000 After Term Commencement Date: Unisphere Solutions, Inc. 11 Txxxxxxxxx Xxxx Xxxxx Xxxxxxxx, Xxxxxxxxxxxxx 00000 TENANT0 XXNANT'S REPRESENTATIVE(S): Robexx X. Xxxxxx TENANT'S CONSTRUCTION REPRESENTATIVE(S): Andrxx Xxxxxx BUILDING: Three (3) story building consisting of 150,000 EXISTING 16,445 rentable square feet constructed upon on the land described on Exhibit A attached hereto (the "Lot") in accordance with the final Landlord's Plans and Tenant's Plans (as defined in Article III hereof, and any replacements thereof) and any alterations and additions thereto, including the Tenant's Work (as hereinafter defined), and including any expansion pursuant to Exhibit R. The legal description fourth SPACE: floor of the Lot is Office Component of the Charxxx Square Site and shown on the floor plan attached hereto as Exhibit A-1A-2. TENANT'S INITIAL SPACE: 18,755 rentable square feet on the fourth floor of the Office Component of the Charxxx Square Site and shown on the floor plan attached hereto as Exhibit A-2. TENANT'S SPACE: From the Commencement Date through June 30, 1996, Tenaxx'x Xnitial Space; from July 1, 1996, through the balance of the Term, Tenant's Initial Space and the Expansion Space. EXPANSION SPACE: 2,760 rentable square feet on the fourth floor of the Office Component of the Charxxx Square Site and shown on the floor plan attached hereto as Exhibit A-2. TOTAL RENTABLE FLOOR AREA OF 150,000 gross THE OFFICE COMPONENT: 109,295 rentable square feetfeet COMMENCEMENT DATE: July 1, as further TENANT'S SPACE1995 TERM EXPIRATION DATE: described in Exhibit A TOTAL RENTABLE FLOOR AREA 150,000 gross square feet, as may be OF THE BUILDING: expanded pursuant to Exhibit R SCHEDULED TENANT'S DESIGN July 15June 30, 2000, subject to the COMPLETION DATE: provisions of Section 3.1 SCHEDULED TERM January 31, 2001 COMMENCEMENT DATE: OUTSIDE DELIVERY DATE: Per Section 3.2 TERM EXPIRATION DATE: Ten (10) years following Tenant's right to extend the Term Commencement Date determined in accordance with under Section 3.2, subject to extension in accordance with Exhibit F. TERM: Ten (10) years, subject to extension in accordance with Exhibit F.2.3.

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subjects shall be construed to incorporate the data stated for that subject in this Section 1.1. 1(A): LANDLORD’S ADDRESS: Arthxx X. Xxxxxxxxx xxx John X. Xxxxxxx0 Xxxxxxx Xxxx Lynnfield, Class A Trustees, and Howaxx Xxxck and Marc X. Xxxx, Xxass B Trustees, all as Trustees of Michxxxxx Xxxm-Westford Technology Park Trust, under Declaration of Trust dated October 1, 1984, recorded with the Middlesex North District Registry of Deeds in Book 2863, Page 235 Massachusetts 01940 LANDLORD’S MANAGING AGENT: The Gutixxxxx Xxxpany LANDLORD'S AND MANAGING Burlington Office Park AGENT'S ADDRESS: One Xxxx Xxxxxxxx Company 00 Xxxxx Xxxxxx Xxxxxxxxxx, Xxxxxxxxxxxxx 00000 LANDLORD'S REPRESENTATIVETENANT’S ADDRESS: John X. Xxxxxxx LANDLORD'S CONSTRUCTION Artuxx X. Xxxxxxxxx, Xxhn X. Xxxxxxx REPRESENTATIVES: or P. Agusxxx Xxxx TENANT: Unisphere Solutions, Inc. TENANT'S ADDRESS Prior to Term the Commencement Date: (FOR NOTICE & BILLING): Unisphere Solutions000 Xxxxxxxx Xxxxxx – 0xx Xxxxx Xxxxxxxxx, Inc. 5 Caxxxxxx Xxxx Xxxxxxxx, XX Xxxxxxxxxxxxx 00000 After Term the Commencement Date: Unisphere Solutions000 Xxxxxxxxxx Xxxxxx Charlestown, Inc. 11 Txxxxxxxxx Xxxx Xxxxx Xxxxxxxx, Xxxxxxxxxxxxx 00000 TENANT'S REPRESENTATIVE(S): Robexx X. Xxxxxx TENANT'S CONSTRUCTION REPRESENTATIVE(S): Andrxx Xxxxxx Massachusetts 02129 BUILDING: Three (3) story That certain building consisting of 150,000 designated as “000 Xxxxxxxxxx Xxxxxx” upon Exhibit A. RENTABLE FLOOR AREA OF TENANT’S SPACE: Approximately 49,869 rentable square feet constructed upon located on the land described third (3rd) floor of the Building. TOTAL RENTABLE FLOOR AREA OF THE BUILDING: Approximately 361,101 rentable square feet. COMMENCEMENT DATE: The later of (i) the date Landlord delivers the Demised Premises to Tenant with the Demised Premises demised from the remaining portion of the Building with all base building systems, including, without limitation, HVAC, life safety and plumbing systems in good working condition, free of all occupants, and with the items designated as Landlord’s responsibility on Exhibit A B-1 attached hereto (the "Lot"“Landlord’s Delivery Conditions”) in accordance with satisfied, or (ii) the final Landlord's Plans and earlier of (a) the date the Tenant's Plans ’s Work (as defined herein) is substantially completed, (b) the date the Tenant commences {W12939071.11} 5 business operations in Article III hereofthe Demised Premises, and any replacements thereofor (c) and any alterations and additions thereto, including the Tenant's Work one hundred twentieth (as hereinafter defined), and including any expansion pursuant to Exhibit R. The legal description 120th) day following Landlord’s satisfaction of the Lot is attached hereto as Exhibit A-1Item (i) above. RENTABLE FLOOR AREA OF 150,000 gross square feet, as further TENANT'S SPACE: described in Exhibit A TOTAL RENTABLE FLOOR AREA 150,000 gross square feet, as may be OF THE BUILDING: expanded pursuant to Exhibit R SCHEDULED TENANT'S ’S DESIGN July 15, 2000, subject to the COMPLETION DATE: provisions Thirty (30) days from the date of Section 3.1 SCHEDULED TERM January 31, 2001 COMMENCEMENT DATE: OUTSIDE DELIVERY DATE: Per Section 3.2 TERM EXPIRATION DATE: Ten (10) years following the Term Commencement Date determined in accordance with Section 3.2, subject to extension in accordance with Exhibit F. TERM: Ten (10) years, subject to extension in accordance with Exhibit F.this Lease.

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subjects shall be construed to incorporate the data stated for that subject in this Section 1.1. LANDLORDArticle: Arthxx X. Xxxxxxxxx xxx John X. XxxxxxxLandlord: BXP Waltham Xxxxx LLC, Class A Trusteesa Delaware limited liability company Landlord’s Original Address c/o Boston Properties Limited PartnershipPrudential Center800 Boylston Street, and Howaxx Xxxck and Marc X. XxxxSuite 1900Boston, Xxass B TrusteesMassachusetts 02199-8103 Landlord’s Construction Representative: Name/Email: Xxxx Xxxxx xxxxxx@xxx.xxx Tenant: TScan Therapeutics, all as Trustees of Michxxxxx Xxxm-Westford Technology Park TrustInc., under Declaration of Trust dated October 1, 1984, recorded with the Middlesex North District Registry of Deeds in Book 2863, Page 235 MANAGING AGENTa Delaware corporation Tenant’s Original Address: The Gutixxxxx Xxxpany LANDLORD'S AND MANAGING Burlington Office Park AGENT'S ADDRESS: One Xxxx 000 Xxxxxx XxxxxxxxxxXxxxxxXxxxxxx, Xxxxxxxxxxxxx 00000 LANDLORD'S REPRESENTATIVE00000Xxxx: John X. Xxxxx MaltbieAttn: Xxxxx Xxxxxxxxx With a copy in all instances to: xxxxxxxx@xxxxx.xxx and xxxxxxxxxx@xxxxx.xxx Tenant’s Construction Representative: Name/Email: Xxxxx Xxxxxxx LANDLORD'S CONSTRUCTION Artuxx X. Xxxxxxxxx, Xxhn X. Xxxxxxx REPRESENTATIVESxxxxxxxx@xxxxx.xxx and Xxxxx Xxxxx xxxxxx@xxxxx.xxx Tenant’s Email Address for Information Regarding Xxxxxxxx and Statements: or P. Agusxxx Xxxx TENANTxxxxxxxx@xxxxx.xxx and xxxxxx@xxxxx.xxx Tenant’s Email Address for Insurance Matters: Unisphere Solutions, Inc. TENANT'S ADDRESS Prior to Term xxxxxxxx@xxxxx.xxx and xxxxxx@xxxxx.xxx Commencement Date: (FOR NOTICE & BILLING): Unisphere Solutions, Inc. 5 Caxxxxxx Xxxx Xxxxxxxx, XX 00000 After Term As defined in Section 2.4 of this Lease. Rent Commencement Date: Unisphere SolutionsThe date that is two (2) months after the Commencement Date. Estimated Commencement Date: November 1, Inc. 11 Txxxxxxxxx Xxxx Xxxxx Xxxxxxxx, Xxxxxxxxxxxxx 00000 TENANT'S REPRESENTATIVE(S2022 Term or Lease Term (sometimes called the “Original Term”): Robexx X. Xxxxxx TENANT'S CONSTRUCTION REPRESENTATIVE(S): Andrxx Xxxxxx BUILDING: Three (3) story building consisting of 150,000 rentable square feet constructed upon the land described on Exhibit A attached hereto (the "Lot") in accordance with the final Landlord's Plans and Tenant's Plans (as defined in Article III hereof, and any replacements thereof) and any alterations and additions thereto, including the Tenant's Work (as hereinafter defined), and including any expansion pursuant to Exhibit R. The legal description of the Lot is attached hereto as Exhibit A-1. RENTABLE FLOOR AREA OF 150,000 gross square feet, as further TENANT'S SPACE: described in Exhibit A TOTAL RENTABLE FLOOR AREA 150,000 gross square feet, as may be OF THE BUILDING: expanded pursuant to Exhibit R SCHEDULED TENANT'S DESIGN July 15, 2000, subject to the COMPLETION DATE: provisions of Section 3.1 SCHEDULED TERM January 31, 2001 COMMENCEMENT DATE: OUTSIDE DELIVERY DATE: Per Section 3.2 TERM EXPIRATION DATE: Ten (10) years and two (2) months following the Term Commencement Date determined (plus the partial month, if any, immediately following the Commencement Date), unless extended or sooner terminated as provided in this Lease. Extension Options: Two (2) period(s) of five (5) year(s) each as provided in and on the terms set forth in Section 9.18 hereof. The Site: That certain parcel of land known as and numbered 000 Xxxxxx Xxxxxx, Xxxxxxx, Xxxxxxxxx Xxxxxx, Xxxxxxxxxxxxx. The Building: The Building known as and numbered 000 Xxxxxx Xxxxxx, Xxxxxxx, Xxxxxxxxxxxxx. The Property: The Building together with all common areas, parking areas and decks located on the Site. Office Park: That certain office park known as Waltham Xxxxx Corporate Center, containing the Property and an adjacent parcel of land with an additional building known as and numbered 000 Xxxxxx Xxxxxx, Xxxxxxx, Xxxxxxxxxxxxx, which Office Park is more particularly described in Exhibit A attached hereto. Tenant’s Premises: A portion of the first (1st) floor of the Building and the entire third (3rd) floor of the Building, in accordance with Section 3.2, subject to extension in accordance with the floor plan annexed hereto as Exhibit F. TERMD and incorporated herein by reference. Number of Parking Spaces: Ten Three hundred forty (10340) years, subject to extension in accordance with Exhibit F.(being three (3) spaces per 1,000 square feet of the Rentable Floor Area of the Premises). Two hundred ninety-five (295) (calculated at a rate of 2.6 spaces per 1,000 rentable square feet of Tenant’s Premises) of such spaces shall be unreserved surface parking spaces (“Surface Parking Spaces”) and forty-five (45) (calculated at a rate of 0.4 spaces per 1,000 rentable square feet of Tenant’s Premises) of such spaces shall be unreserved spaces (“Garage Parking Spaces”) located within the garage (“Garage”) underneath the Building.

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subjects shall incorporate the data stated for that subject in this Section 1.1. LANDLORD: Arthxx Xxxxxx X. Xxxxxxxxx xxx John and Xxxx X. Xxxxxxx, Class A Trustees, and Howaxx Xxxck and Marc X. Xxxx, Xxass B Trustees, all as Trustees of Michxxxxx Xxxm-Westford the Middlesex Technology Park Center Associates III Trust, under Declaration of Trust u/d/t dated October 1April 20, 19841982, and recorded with the Middlesex North District Registry of Deeds in Book 28632531, Page 235 657, as amended. MANAGING AGENT: The Gutixxxxx Xxxpany Xxxxxxxxx Company LANDLORD'S AND MANAGING Burlington Office Park AGENT'S ADDRESS: One Burlington Xxxxxx Xxxx Xxx Xxxx Xxxxxx Xxxxxxxxxx, Xxxxxxxxxxxxx XX 00000 LANDLORD'S REPRESENTATIVE: John Xxxx X. Xxxxxxx LANDLORD'S ’S CONSTRUCTION Artuxx X. Xxxxxxxxx, Xxhn X. Xxxxxxx REPRESENTATIVES: or P. Agusxxx Xxxx Xxxxxxx X. Xxxxxxxx and Xxxxxx X. Xxxxxx TENANT: Unisphere SolutionsNEXX Systems, Inc. TENANT'S ADDRESS Prior to Term Commencement Date: (FOR NOTICE & BILLING): Unisphere SolutionsBefore Term Commencement Date: NEXX Systems, Inc. 5 Caxxxxxx 0 Xxxxxxxx Xxxx XxxxxxxxXxxxx Xxxxxxxxx, XX 00000 00000-0000 Attention: Xxxxxxx Xxxxxx, Vice President/Finance and Chief Financial Officer After Term Commencement Date: Unisphere SolutionsNEXX Systems, Inc. 11 Txxxxxxxxx Xxxx Xxxxx 000 Xxxxxxxxx Xxxxxxxx, Xxxxxxxxxxxxx Xxxxxxxx 0 Xxxxxxxxx, XX 00000 Attention: Xxxxxxx Xxxxxx, Vice President/Finance and Chief Financial Officer TENANT'S REPRESENTATIVE(S): Robexx REPRESENTATIVE: Xxxxxxx X. Xxxxxx Xxxxxxx, Vice President of Operations TENANT'S ’S CONSTRUCTION REPRESENTATIVE(S): Andrxx Xxxxxx ) GUARANTOR: Xxxxxxx X. Xxxxxxx, Vice President of Operations N/A BUILDING: Three The existing one (31) story building consisting of 150,000 approximately 91,649 rentable square feet constructed located at 000 Xxxxxxxxx Xxxxxxxx, Xxxxxxxxx, Xxxxxxxxxxxxx (the “Original Building”), upon the land described lot identified as Lot 6B and Lot 6B1 on Exhibit A attached hereto a plan entitled “”Revised Plan of Land in Billerica, Massachusetts” prepared for The Xxxxxxxxx Company, Scale 1” = 50’, dated March 8, 2005, which plan was recorded with said Deeds in Plan Book 218, Plan 100 (the "“Lot") in accordance with the final Landlord's Plans and Tenant's Plans (as defined in Article III hereof, and any replacements thereof) and any alterations and additions thereto, including the Tenant's Work (as hereinafter defined”), and including any expansion pursuant to Exhibit R. The legal description of the Lot is attached hereto as Exhibit A-1. RENTABLE FLOOR AREA OF 150,000 gross TENANT'S SPACE: 38,966 rentable square feet, as further TENANT'S SPACE: described in Exhibit A and in Article III TOTAL RENTABLE FLOOR AREA 150,000 gross 91,649 rentable square feet, as may be OF THE BUILDING: expanded pursuant to Exhibit R SCHEDULED TENANT'S DESIGN July 15, 2000, subject to the COMPLETION DATE: provisions of Section 3.1 feet SCHEDULED TERM January 31, 2001 COMMENCEMENT DATE: January 1, 2008 OUTSIDE DELIVERY DATE: Per Section 3.2 TERM EXPIRATION DATE: Ten Seven (107) years and two (2) months following the Term Commencement Date determined in accordance with Section 3.2, subject to extension in accordance with Exhibit F. F or earlier termination in accordance with Exhibit C. TERM: Ten Seven (107) yearsyears and two (2) months, subject to extension in accordance with Exhibit F.F or earlier termination in accordance with Exhibit C.

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subjects shall incorporate the data stated for that subject in this Section 1.1. LANDLORD: Arthxx X. Xxxxxxxxx xxx John X. Xxxxxxx, Class A Trustees, and Howaxx Xxxck and Marc X. Xxxx, Xxass B Trustees, all as Trustees of Michxxxxx Xxxm-Westford Technology Park Trust, under Declaration of Trust dated October 1, 1984, recorded with the Middlesex North District Registry of Deeds in Book 2863, Page 235 VIII Limited Partnership MANAGING AGENT: The Gutixxxxx Xxxpany Xxxxxxxxx Company LANDLORD'S AND MANAGING Burlington Office Park AGENT'S ADDRESS: One Burlington Xxxxxx Xxxx Xxx Xxxx Xxxxxx Xxxxxxxxxx, Xxxxxxxxxxxxx 00000 LANDLORD'S REPRESENTATIVE: John Xxxx X. Xxxxxxx LANDLORD'S CONSTRUCTION Artuxx X. Xxxxxxxxx, Xxhn X. Xxxxxxx REPRESENTATIVES: or P. Agusxxx Xxxx TENANT: Unisphere Solutions, Inc. Carleton Corporation TENANT'S ADDRESS Prior to Term Commencement Date: (FOR NOTICE & BILLING): Unisphere Solutions, Inc. 5 Caxxxxxx Xxxx Xxxxxxxx, XX 00000 After Term Commencement Date: Unisphere Solutions, Inc. 11 Txxxxxxxxx 000 Xxxxxxxxxx Xxxx Xxxxx Xxxxxxxx, - Xxxxxxxx XX Xxxxxxxxx Xxxxxxxxxxxxx 00000 TENANTTENANT REPRESENTATIVE: Hem Xxxxx LANDLORD'S REPRESENTATIVE(S): Robexx X. Xxxxxx TENANT'S CONSTRUCTION REPRESENTATIVE(S): Andrxx Xxxxxx MORTGAGEE: Teachers Insurance and Annuity Association of America 000 Xxxxx Xxxxxx, Xxx Xxxx, Xxx Xxxx 00000 BUILDING: Three (3) story building consisting of 150,000 rentable square feet constructed upon the land described on Exhibit A attached hereto (the "Lot") in accordance with the final Landlord's Plans and Tenant's Plans (as defined in Article III hereofBuilding IX 000, and any replacements thereof) and any alterations and additions thereto, including the Tenant's Work (as hereinafter defined), and including any expansion pursuant to Exhibit R. The legal description of the Lot is attached hereto as Exhibit A-1. Xxxxxxxxxx Xxxx Xxxxx XXXXX: Second RENTABLE FLOOR AREA OF 150,000 gross square feet, as further TENANT'S SPACE: described in Exhibit A 11.881 SQUARE FEET TOTAL RENTABLE FLOOR AREA 150,000 gross square feet, as may be OF THE BUILDING: expanded pursuant to Exhibit R SCHEDULED 43.675 SQUARE FEET TENANT'S DESIGN July 15, 2000, subject to the COMPLETION DATE: provisions of Section 3.1 JULY 29, 1996 CHECK ONE: COMPLETE PLANS [ ] INTERIOR SELECTION [X] SCHEDULED TERM January 31, 2001 COMMENCEMENT DATE: October 1, 1996 OUTSIDE DELIVERY DATE: Per Section 3.2 November 1, 1996 TERM EXPIRATION DATE: Ten (10) years following the Term Commencement Date determined in accordance with Section 3.2September 30, subject to extension in accordance with Exhibit F. 2001 APPROXIMATE TERM: Ten 5 Years FIXED RENT: $162,175.65/YEAR MONTHLY FIXED RENT: $13,514.64 ANNUAL ESTIMATED OPERATING COSTS: $251,131.25 / $5.75/RSF ESTIMATED COST OF ELECTRICAL SERVICE TO TENANTS SPACE (10) yearsIncluded in Fixed Rent): $8,910.75 / $0.75/RSF FIRST FISCAL YEAR FOR TENANT'S PAYING OPERATING COSTS ESCALATION- YEAR ENDING December 31, subject to extension in accordance with Exhibit F.1997 SECURITY DEPOSIT: N/A GUARANTOR N/A TENANT IMPROVEMENT REIMBURSEMENT TO LANDLORD: N/A PERMITTED USES: General Office REAL ESTATE BROKER(S): The Leggat Company Xxxxxx X. Xxxx, Inc.

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subjects shall be construed to incorporate the data stated for that subject in this Section 1.1. Section: LANDLORD: Arthxx X. Xxxxxxxxx xxx John X. Xxxxxxx313 Xxxxxxxxxx Xxxxxx, Class A TrusteesXXC, and Howaxx Xxxck and Marc X. Xxxx, Xxass B Trustees, all as Trustees of Michxxxxx Xxxm-Westford Technology Park Trust, under Declaration of Trust dated October 1, 1984, recorded with the Middlesex North District Registry of Deeds in Book 2863, Page 235 a Massachusetts limited liability company MANAGING AGENT: The Gutixxxxx Xxxpany LANDLORD'S AND MANAGING Burlington Office Park AGENTGrosxxxx Xxxpanies, Inc. 1266 Xxxxxxx Xxxxx Xxxxxxx Xxxxxx, XX 00000-0000 XXNDLORD'S ADDRESS: One Xxxx Xxxxxx Xxxxxxxxxxc/o The Grosxxxx Xxxpanies, Xxxxxxxxxxxxx 00000 Inc. 1266 Xxxxxxx Xxxxx Xxxxxxx Xxxxxx, XX 00000-0000 LANDLORD'S REPRESENTATIVE: John X. Xxxxxxx LANDLORD'S CONSTRUCTION Artuxx X. Xxxxxxxxx, Xxhn X. Xxxxxxx REPRESENTATIVES: or P. Agusxxx Xxxx TENANT: Unisphere SolutionsThe Grosxxxx Xxxpanies, Inc. TENANT: MCK Telecommunications, Inc., a corporation organized and existing under the laws of Alberta, Canada. TENANT'S ADDRESS Prior to Term Commencement DateADDRESS: (FOR NOTICE & BILLING): Unisphere Solutions, Inc. 5 Caxxxxxx Xxxx Xxxxxxxx313 Xxxxxxxxxx Xxxxxx Xxxxxx, XX 00000 After Term Commencement DateXXILDING ADDRESS: Unisphere Solutions313 Xxxxxxxxxx Xxxxxx Xxxxxx, Inc. 11 Txxxxxxxxx Xxxx Xxxxx Xxxxxxxx, Xxxxxxxxxxxxx XX 00000 TENANT'S REPRESENTATIVE(S): Robexx X. Xxxxxx TENANT'S CONSTRUCTION REPRESENTATIVE(S): Andrxx Xxxxxx BUILDINGXXTICIPATED TERM COMMENCEMENT DATE: Three (3Sixty 960) story building consisting days following the execution of 150,000 rentable square feet constructed upon the land described on Exhibit A attached hereto (the "Lot") in accordance with the final Landlord's Plans and Tenant's Plans (as defined in Article III hereof, and any replacements thereof) and any alterations and additions thereto, including the Tenant's Work (as hereinafter defined), and including any expansion pursuant to Exhibit R. The legal description of the Lot is attached hereto as Exhibit A-1this Lease. RENTABLE FLOOR AREA OF 150,000 gross square feet, as further TENANT'S SPACE: described in Exhibit A TOTAL 6968 Square Feet RENTABLE FLOOR AREA 150,000 gross square feet, as may be OF THE BUILDING: expanded pursuant to Exhibit R SCHEDULED 76,473 Square Feet RENTABLE FLOOR AREA OF THE OFFICE AREAS: 66,139 Square Feet TENANT'S DESIGN July 15SHARE OF BUILDING OPERATION COSTS AND REAL ESTATE TAXES: 9.11% TENANT'S SHARE OF OFFICE OPERATION COSTS: 10.54% BASE REAL ESTATE TAXES: Real Estate Taxes incurred on account of calendar 1997. BASE BUILDING OPERATIONS COSTS: Building Operation Costs incurred on account of calendar 1997. BASE OFFICE OPERATION COSTS: Office Operation Costs incurred on account of calendar 1997. TERM: 60 calendar months (plus, 2000, subject to if the COMPLETION DATE: provisions of Section 3.1 SCHEDULED TERM January 31, 2001 COMMENCEMENT DATE: OUTSIDE DELIVERY DATE: Per Section 3.2 TERM EXPIRATION DATE: Ten (10) years following the Term Commencement Date determined is a day other than the first day of a calendar month, the partial month beginning on the Commencement Date and ending on the last day of the calendar month in accordance with Section 3.2, subject to extension in accordance with Exhibit F. TERM: Ten (10) years, subject to extension in accordance with Exhibit F.which the Commencement Date occurs).

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subjects shall incorporate the data stated for that subject in this Section 1.1. LANDLORDLandlord: Arthxx X. Xxxxxxxxx xxx John X. Xxxxxxx, Class A Trustees, and Howaxx Xxxck and Marc X. Xxxx, Xxass B Trustees, all as Trustees of Michxxxxx Xxxm-Westford Technology Park Trust, under Declaration of Trust dated October 1, 1984, recorded with the Middlesex North District Registry of Deeds in Book 2863, Page 235 MANAGING AGENT: The Gutixxxxx Xxxpany LANDLORD'S AND MANAGING Burlington Office Park AGENT'S ADDRESSV Limited Partnership Managing Agent: One The Xxxxxxxxx Company Landlord’s and Managing Agent’s Address: Burlington Xxxxxx Xxxx Xxx Xxxx Xxxxxx Xxxxxxxxxx, Xxxxxxxxxxxxx 00000 LANDLORD'S REPRESENTATIVELandlord’s Representatives: John X. Xxxxxxx LANDLORD'S CONSTRUCTION Artuxx Xxxxxx X. Xxxxxxxxx, Xxhn Xx., President Xxxxxxx X. Xxxxxxx REPRESENTATIVESXxxxxxxx, Vice President of Operations Tenant: or P. Agusxxx Xxxx TENANT: Unisphere SolutionsAscend Learning LLC, Inc. TENANT'S ADDRESS a Delaware corporation Tenant’s Address (for Notice & Billing): Prior to Lease occupancy: 00 Xxxx Xxxx Xxxxx Xxxxxxx, XX 00000 Attn: Xxxx Xxxxxxx, Treasurer and Controller Following occupancy: Five Xxxx Xxxxxx Xxxxxxxxxx, Xxxxxxxxxxxxx 00000 Attention: Xxxx Xxxxxxx, Treasurer and Controller Tenant’s Representative: Xxxx Xxxxxxx, Treasurer and Controller Building: Five Wall Street, Burlington, Massachusetts Floor(s): Third and Fourth (3rd and 4th) Floors Rentable Floor Area of Tenant’s Space: 55,166 Rentable Square Feet (RSF) located on the third and fourth floors of the Building, specifically consisting of approximately 36,511 RSF on the third (3rd) floor and approximately 18,655 RSF on the fourth (4th) floor. Total Rentable Floor Area of the Building: 181,680 Square Feet Scheduled Term Commencement Date: (FOR NOTICE & BILLING): Unisphere SolutionsJuly 1, Inc. 5 Caxxxxxx Xxxx Xxxxxxxx, XX 00000 After Term Commencement 2011 Outside Delivery Date: Unisphere Solutions, Inc. 11 Txxxxxxxxx Xxxx Xxxxx Xxxxxxxx, Xxxxxxxxxxxxx 00000 TENANT'S REPRESENTATIVE(S): Robexx X. Xxxxxx TENANT'S CONSTRUCTION REPRESENTATIVE(S): Andrxx Xxxxxx BUILDING: Three (3) story building consisting of 150,000 rentable square feet constructed upon the land described on Exhibit A attached hereto (the "Lot") in accordance with the final Landlord's Plans and Tenant's Plans (as defined in Article III hereof, and any replacements thereof) and any alterations and additions thereto, including the Tenant's Work (as hereinafter defined), and including any expansion pursuant to Exhibit R. The legal description of the Lot is attached hereto as Exhibit A-1. RENTABLE FLOOR AREA OF 150,000 gross square feet, as further TENANT'S SPACE: described in Exhibit A TOTAL RENTABLE FLOOR AREA 150,000 gross square feet, as may be OF THE BUILDING: expanded pursuant to Exhibit R SCHEDULED TENANT'S DESIGN July 15, 2000, subject to the COMPLETION DATE: provisions of Section 3.1 SCHEDULED TERM January 31, 2001 COMMENCEMENT DATE: OUTSIDE DELIVERY DATE: Per Section 3.2 TERM EXPIRATION DATETerm Expiration Date: Ten (10) years following the Term Commencement Date determined in accordance with -with Section 3.2, subject to extension in accordance with Exhibit F. TERM: Ten (10) years, “F” or subject to extension earlier termination in accordance with the applicable provisions of this Lease. Fixed Rent (Exclusive of Tenant Electricity): Initial eight and one-half (8.5) months: $0 Months 8.5-12 (commencing the 9.5 month anniversary of the Commencement Date) $1,351,567.00/Year; $112,630.58/Month $24.50/RSF Year 2: $1,379,150.00/Year; $114,929.17/ Month; $25.00/RSF Year 3: $1,406,733.00/Year; $117,227.75/ Month; $25.50/RSF Year 4: $1,599,814.00/Year; $133,317.83/ Month; $29.00/RSF Year 5: $1,627,397.00/Year; $135,616.42/ Month; $29.50/RSF Year 6: $1,654,980.00/Year; $137,915.00/ Month; $30.00/RSF Year 7: $1,682,563.00/Year; $140,213.58/ Month; $30.50/RSF Year 8: $1,710,146.00/Year; $142,512.17/ Month; $31.00/RSF Year 9: $1,737,729.00/Year; $144,810.75/ Month; $31.50/RSF Year 10: $1,765,312.00/Year; $147,109.33/ Month; $32.00/RSF Base Operating Costs (for the Building): Landlord’s Operating Costs (as defined in Section 4.2) for the Calendar Year ending December 31, 2011 (except that the real estate taxes component of Base Operating Costs shall be equal to the real estate taxes for fiscal tax year ending June 30, 2012). Estimated Cost of Electrical Service to Tenant’s Space (Excluded from Fixed Rent): $1.35/RSF - payable by Tenant pursuant to Exhibit F.“D”, Paragraph IX First Fiscal Year for Tenant’s Paying Operating Costs Escalation: Calendar Year Ending December 31, 2012 Security: See Article 11 Guarantor: Not Applicable Permitted Uses: General Office Use and other lawful uses that are ancillary and accessory thereto Real Estate Broker(s): Xxxxx & Xxxxx Company Public Liability Insurance – Bodily Injury and Property Damage: Each Occurrence: $1,000,000 Aggregate: $2,000,000 Special Provisions: Rental Abatement — See Section 1.1 Option to Extend (per Exhibit “F”) Right of First Offer (Per Exhibit “I”) Right of First Refusal (per Exhibit “N”)