Common use of SUBJECTS REFERRED TO Clause in Contracts

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subject shall be constructed to incorporate the data stated for that subject in this Article: Landlord: BP PRUCENTER ACQUISITION LLC, a Delaware limited liability company Present Mailing Address of Landlord: c/o Boston Properties Limited Partnership Prudential Center 000 Xxxxxxxx Xxxxxx, Xxxxx 0000 Xxxxxx, Xxxxxxxxxxxxx 00000-0000 Landlord's Construction Representative: X.X.Xxxxxxx Tenant: SEMRUSH Inc., a Delaware corporation Present Mailing Address of Tenant: 0 Xxxxxxxxx Xxxxxxxxx, Xxxxx 000 Xxxxxxx, XX 00000-0000 Tenant's Email Address for Information Regarding Xxxxxxxx and Statements: xxxxxxx@xxxxxxx.xxx Tenant's Construction Representative: Ainella Mussina Expiration Date: The date which is thirty-six (36) full calendar months (plus the partial month, if any) immediately following the Commencement Date. Term or Lease Term (sometimes called the “Original Lease Term”): The period beginning on the Commencement Date and ending on the Expiration Date, unless sooner terminated as hereinafter provided. Lease Year: A period of twelve (12) consecutive calendar months, commencing on the first day of January in each year, except that the first Lease Year of the Lease Term hereof shall be the period commencing on the Commencement Date and ending on the succeeding December 31, and the last Lease Year of the Lease Term hereof shall be the period commencing on January 1 of the calendar year in which the Lease Term ends, and ending with the date on which the Lease Term ends. Rent Year: Any twelve (12) month period during the Term of the Lease commencing as of the Rent Commencement Date, or as of any anniversary of the Rent Commencement Date, except that if the Rent Commencement Date does not occur on the first day of a calendar month, then (i) the first Rent Year shall further include the partial calendar month in which the first anniversary of the Rent Commencement Date occurs, and (ii) the remaining Rent Years shall be the successive twelve-(12)-month periods following the end of such first Rent Year. Commencement Date: The date on which Landlord delivers the Premises to Tenant with the Landlord’s Work substantially complete. Rent Commencement Date: The earlier of: (i) the Commencement Date, and (ii) December 16, 2018, except that if the Commencement Date has occurred and Tenant takes occupancy of the Premises or any portion thereof for any purpose (e.g., business operations, etc.) prior to December 16, 2018, then the Rent Commencement Date shall be the date on which such occupancy first occurs. Premises: A portion of the twenty-fourth (24th) floor of the Building, in accordance with the floor plan annexed hereto as Exhibit D and incorporated herein by reference, as further defined and limited in Section 2.1 hereof. Rentable Floor Area of the Premises: 7,234 square feet. Annual Fixed Rent: During the Term of this Lease, Annual Fixed Rent shall be payable by Tenant as follows: Rent Years Rate PSF Annual Rate 1 $73.00 $528,082.00 2 $74.83 $541,320.22 3 $76.70 $554,847.80 Tenant Electricity: See Section 5.2

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subject subjects shall be constructed construed to incorporate the data stated for that subject in this Article: Landlord: BP PRUCENTER ACQUISITION LLC00 XXXXXXXX XXXXXX TRUST under Declaration of Trust dated September 28, a Delaware limited liability company Present Mailing Address of 1981, as the same may have been amended, but not individually. Landlord’s Original Address: c/o Boston Properties Limited Partnership Prudential Center 000 Xxxxxxxx Xxxxxx, Xxxxx 0000 Xxxxxx, Xxxxxxxxxxxxx 00000-0000 Landlord's ’s Construction Representative: X.X.Xxxxxxx Xxx Xxxxxxx and Xxx Xxxxxxx Tenant: SEMRUSH Inc.INOTEK PHARMACEUTICALS CORPORATION, a Delaware corporation Present Mailing Address of Tenant’s Original Address: 0 Xxxxxxxxx XxxxxxxxxInotek Pharmaceuticals Corporation 000 Xxxxxxxx Xxxxxx Lexington, Xxxxx 000 XxxxxxxMA 02421 Attn: Xxxx Xxxxxx, XX 00000-0000 VP Finance Tenant's ’s Email Address for Information Regarding Xxxxxxxx and Statements: xxxxxxx@xxxxxxx.xxx Tenant's ’s Construction Representative: Ainella Mussina Expiration Xxxxxx Xxxxxxx Commencement Date: The date which is thirty-six As defined in Section 2.4 of this Lease and Section 1.1 of Exhibit B-1. Estimated Commencement Date: September 1, 2015 Outside Completion Date: September 30, 2015 Term or Lease Term (36sometimes called the “Original Term”): Ninety (90) full calendar months (plus the partial month, if any) , immediately following the Commencement Date. Term or Lease Term (sometimes called the “Original Lease Term”): The period beginning on the Commencement Date and ending on the Expiration Date), unless extended or sooner terminated as hereinafter providedprovided in this Lease. Lease YearExtension Option: A One (1) period of twelve five (125) consecutive calendar months, commencing years as provided in and on the first day of January terms set forth in each year, except that the first Lease Year of the Lease Term hereof shall be the period commencing on the Commencement Date and ending on the succeeding December 31, and the last Lease Year of the Lease Term hereof shall be the period commencing on January 1 of the calendar year in which the Lease Term ends, and ending with the date on which the Lease Term endsSection 2.4.1 hereof. Rent Year: Any twelve (12) month period during the Term of the Lease commencing as of the Rent Commencement Date, or as of any anniversary of the Rent Commencement Date, except that if the Rent Commencement Date does not occur on the first day of a calendar month, then (i) the first Rent Year shall further include the partial calendar month in which the first anniversary of the Rent Commencement Date occursoccurs (but any rent abatement provided herein shall not be applicable to such partial month), and (ii) the remaining Rent Years shall be the successive twelve-(12)-month periods following the end of such first Rent Year. Commencement Date: The date on which Landlord delivers ; provided, however that the Premises to Tenant with last Rent Year shall be the Landlord’s Work substantially complete. Rent Commencement Date: The earlier of: (i) period from the Commencement Date, and (ii) December 16, 2018, except that if last anniversary of the Commencement Date has occurred and Tenant takes occupancy within the Original Term through the expiration of the Premises or any portion thereof for any purpose Original Term. The Site: That certain parcel of land known as and numbered 00 Xxxxxxxx Xxxxxx, Lexington, Middlesex County, Massachusetts, being more particularly described in Exhibit A attached hereto. The Building: The Building known as and numbered 00 Xxxxxxxx Xxxxxx, Lexington, Massachusetts. The Complex: The Building together with all common areas, surface parking areas, the Site and all improvements (e.g., business operations, etcincluding landscaping) thereon and thereto.) prior to December 16, 2018, then the Rent Commencement Date shall be the date on which such occupancy first occurs. Premises: A portion of the twenty-fourth (24th) floor of the Building, in accordance with the floor plan annexed hereto as Exhibit D and incorporated herein by reference, as further defined and limited in Section 2.1 hereof. Rentable Floor Area of the Premises: 7,234 square feet. Annual Fixed Rent: During the Term of this Lease, Annual Fixed Rent shall be payable by Tenant as follows: Rent Years Rate PSF Annual Rate 1 $73.00 $528,082.00 2 $74.83 $541,320.22 3 $76.70 $554,847.80 Tenant Electricity: See Section 5.2

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subject subjects shall be constructed construed to incorporate the data stated for that subject in this Article: Landlord: BP PRUCENTER ACQUISITION LLCBOSTON PROPERTIES LIMITED PARTNERSHIP, a Delaware limited liability company partnership Present Mailing Address of Landlord: c/o Boston Properties Limited Partnership Properties, Inc. Prudential Center Tower 000 Xxxxxxxx Xxxxxx, Xxxxx 0000 Xxxxxx, Xxxxxxxxxxxxx 00000-0000 Landlord's ’s Construction Representative: X.X.Xxxxxxx Ellesse Xxxxx Tenant: SEMRUSH Inc.TRANSLATE BIO, INC., a Delaware corporation Present Mailing Address of Tenant: 0 Xxxxxxxxx Xxxxxxxxx00 Xxxxxxxx Xxxxxx Lexington, Xxxxx 000 Xxxxxxx, XX 00000-0000 Massachusetts 02421 Tenant's ’s Email Address for Information Regarding Xxxxxxxx and Statements: xxxxxxx@xxxxxxx.xxx xxxxxxxxxxxxxxx@xxxxxxxxx.xxx Tenant's ’s Construction Representative: Ainella Mussina Expiration Date: The date which is thirty-six (36) full calendar months (plus the partial monthXxx Xxxxx, if any) immediately following the Commencement Date. Director of Facilities Term or Lease Term (sometimes called the “Original Lease Term”): The A period beginning on the Commencement Date (as hereinafter defined) and ending on the Expiration Datelast day of the one hundred twentieth (120th) full calendar month immediately following the Rent Commencement Date (as hereinafter defined), unless extended or sooner terminated as hereinafter providedprovided in this Lease. Extension Option: One (1) period of ten (10) years as provided in and on the terms set forth in Section 3.2 hereof. Lease Year: A period of twelve (12) consecutive calendar months, commencing on the first day of January in each year, except that the first Lease Year of the Lease Term hereof shall be the period commencing on the Commencement Date and ending on the succeeding December 31, and the last Lease Year of the Lease Term hereof shall be the period commencing on January 1 of the calendar year in which the Lease Term ends, and ending with the date on which the Lease Term ends. Rent Year: Any twelve (12) month period during the Term of the Lease commencing as of the Rent Commencement Date, or as of any anniversary of the Rent Commencement Date, except that if the Rent Commencement Date does not occur on the first day of a calendar month, then (i) the first Rent Lease Year shall further include consist of the partial calendar month in which the first anniversary of the Rent Commencement Date occursoccurs and the following twelve (12) full calendar months, and (ii) the remaining Rent Lease Years shall be the successive twelve-(12)-month twelve (12) month periods following the end of such first Rent each preceding Lease Year. Commencement Date: The date on which Landlord delivers the Premises to Tenant with the Landlord’s Work substantially completeEffective Date. Rent Commencement Date: The earlier of: date twelve (i12) months after the Commencement Date, and provided that such twelve (12) month period shall be subject to extension by the number of days (not to exceed one hundred eighty (180) days in the aggregate) by which Tenant’s Work is actually delayed as a result of either (or both) (i) an active governmental order prohibiting non-essential construction activity in Waltham, Massachusetts due to the COVID-19 pandemic or (ii) December 16unusual scarcity of or inability to obtain labor or materials due to the COVID-19 pandemic (each, 2018a “COVID Delay”), except as further provided below. Notwithstanding the foregoing, (x) in no event shall any of the foregoing be deemed to be a COVID Delay until and unless Tenant has given Landlord written notice (the “COVID Delay Notice”) advising Landlord (a) that if such a delay is occurring, and (b) of the Commencement Date basis on which Tenant has occurred determined that such a delay is occurring. If Tenant, as the result of a COVID Delay, is actually delayed in completion of Tenant’s Work and Tenant takes occupancy provides a COVID Delay Notice with Tenant’s good faith estimate of the Premises or any portion thereof for any purpose (e.g.likely length of such COVID Delay, business operations, etc.) prior to December 16, 2018, then the Rent Commencement Date shall be postponed one day for each day of such COVID Delay subject to the date 180-day limit set forth above. Tenant Plans Date: December 11, 2020 The Site: That certain parcel of land located on which such occupancy first occursXxxx Xxxxxx, Xxxxxxx, Xxxxxxxxx Xxxxxx, Xxxxxxxxxxxxx, being more particularly described in Exhibit A attached hereto, plus any additions or reductions thereto resulting from the change of any abutting street line. The Building: The Building known as and numbered 000 Xxxx Xxxxxx, Xxxxxxx, Xxxxxxxxxxxxx, located on the Site, and containing the Total Rentable Floor Area set forth below. The Complex: The Building together with all common areas, parking areas, garage, and structures, located on the Site, as shown on the site plan attached hereto as Exhibit D-2. The Premises: A portion The entirety of the twenty-first (1st), second (2nd), third (3rd) and fourth (24th4th) floor floors of the west wing of the Building, in accordance with the floor plan plans annexed hereto as Exhibit D D-1 and incorporated herein by reference, as further defined and limited in Section 2.1 hereof. Rentable Floor Area of the Premises: 7,234 Approximately 138,444 rentable square feet. Annual Fixed Rent, consisting of the following components: During the Term of this Lease, Annual Fixed Rent shall be payable by Tenant as follows• 1st Floor: Rent Years Rate PSF Annual Rate 1 $73.00 $528,082.00 2 $74.83 $541,320.22 3 $76.70 $554,847.80 Tenant Electricity28,089 rentable square feet • 2nd Floor: See Section 5.236,677 rentable square feet • 3rd Floor: 36,948 rentable square feet • 4th Floor: 36,730 rentable square feet.

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subject subjects shall be constructed construed to incorporate the data stated for that subject in this Article: Landlord: BP PRUCENTER ACQUISITION XX XXXXXXX LLC, a Delaware limited liability company Present Mailing Address of Landlord: c/o Boston Properties Limited Partnership Prudential Center 000 Xxxxxxxx Xxxxxx, Xxxxx 0000 Xxxxxx, Xxxxxxxxxxxxx 00000-0000 Landlord's ’s Construction Representative: X.X.Xxxxxxx Xxxxxxx Xxxxxx Tenant: SEMRUSH Inc.CRA INTERNATIONAL, INC., a Delaware Massachusetts corporation Present Mailing Address of Tenant: 0 000 Xxxxxxxxx XxxxxxxxxXxxxxx, Xxxxx 000 XxxxxxxXxxxxx, XX 00000-0000 Xxxxxxxxxxxxx 00000 Tenant's ’s Email Address for Information Regarding Xxxxxxxx and Statements: xxxxxxx@xxxxxxx.xxx xxxxxxxxxxxxxxx@xxxx.xxx and xxxxxxx@xxxx.xxx Tenant's ’s Construction Representative: Ainella Mussina Expiration Xxxxxx Xxxxxx Estimated Commencement Date: The date which is thirty-six (36) full calendar months (plus the partial monthFebruary 1, if any) immediately following the Commencement Date. 2015 Term or Lease Term (sometimes called the “Original Lease Term”): The period beginning commencing on the Commencement Date and ending on the Expiration last day of the one hundred twentieth (120th) full calendar month immediately following the Rent Commencement Date, unless extended or sooner terminated as hereinafter provided. Extension Options: Two (2) periods of five (5) years as provided in and on the terms set forth in Section 3.2 hereof. Lease Year: A period of twelve (12) consecutive calendar months, commencing on the first day of January in each year, except that the first Lease Year of the Lease Term hereof shall be the period commencing on the Commencement Date and ending on the succeeding December 31, and the last Lease Year of the Lease Term hereof shall be the period commencing on January 1 of the calendar year in which the Lease Term ends, and ending with the date on which the Lease Term ends. Rent Year: Any twelve (12) month period during the Term of the Lease commencing as of the Rent Commencement Date, or as of any anniversary of the Rent Commencement Date, except that if the Rent Commencement Date does not occur on the first day of a calendar month, then (i) the first Rent Year shall further include the partial calendar month in which the first anniversary of the Rent Commencement Date occurs, and (ii) the remaining Rent Years shall be the successive twelve-(12)-month periods following the end of such first Rent Year. Commencement Date: The later to occur of (x) the date on which Landlord delivers the Premises to Tenant with the and (y) January 1, 2015 (subject to Landlord’s Work right to accelerate the Commencement Date as set forth in Section 3.1 below). The Premises shall be considered delivered by Landlord to Tenant on the day on which Landlord substantially completecompletes Landlord’s Delivery Work, as defined in Exhibit B-1. Rent Commencement Date: The earlier That date which is the later to occur of: (x) the first to occur of (i) the date which is one hundred eighty (180) days immediately following the Commencement DateDate (as such 180-day period may be extended due to Landlord Delays, as defined in Exhibit B-1) and (ii) December 16, 2018, except that if the Commencement Date has occurred and Tenant takes occupancy of the Premises or any portion thereof for any purpose (e.g., business operations, etc.) prior to December 16, 2018, then the Rent Commencement Date shall be the date on which such occupancy first occurs. Premises: A portion Tenant commences beneficial use of the twenty-fourth Premises for the purpose of conducting business operations therein; and (24thy) floor the substantial completion by Landlord of Landlord’s Rooftop Terrace Work (as defined in, and subject to the Buildingterms and provisions of, in accordance with the floor plan annexed hereto as Exhibit D and incorporated herein by reference, as further defined and limited in Section 2.1 hereof. Rentable Floor Area of the Premises: 7,234 square feet. Annual Fixed Rent: During the Term of this Lease, Annual Fixed Rent shall be payable by Tenant as follows: Rent Years Rate PSF Annual Rate 1 $73.00 $528,082.00 2 $74.83 $541,320.22 3 $76.70 $554,847.80 Tenant Electricity: See Section 5.2B-1).

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subject subjects shall be constructed construed to incorporate the data stated for that subject in this Article. LANDLORD: Landlord610 Lincoln LLC LANDLORD'S ADDRESS: BP PRUCENTER ACQUISITION LLC, a Delaware limited liability company Present Mailing Address of Landlord: c/o Boston Properties Limited Partnership Prudential Center 000 Xxxxxxxx Xxxxxx, Xxxxx 0000 XxxxxxP. O. Xxx 000000 Xxxxxxx, Xxxxxxxxxxxxx 00000-0000 Landlord's Construction Representative00000 Attention: X.X.Xxxxxxx TenantReal Estate Manager TENANT: SEMRUSH GPC Biotech Inc., a Delaware corporation Present Mailing Address TENANT'S ORIGINAL ADDRESS: Xxx Xxxxxxx Xxxxxx, Building 600 Cambridge, Massachusetts 02139 TENANT PLAN DELIVERY DATE: On or before the date thirty (30) days after the date of Tenantexecution of this Lease ESTIMATED DELIVERY DATES: 0 Xxxxxxxxx XxxxxxxxxPREMISES A: April 20, Xxxxx 000 Xxxxxxx2001 PREMISES B: September 1, XX 00000-0000 Tenant's Email Address for Information Regarding Xxxxxxxx and Statements: xxxxxxx@xxxxxxx.xxx Tenant's Construction Representative: Ainella Mussina Expiration Date2002 TERM COMMENCEMENT DATE: The date which is thirty-six of Delivery of Premises A TERM EXPIRATION DATE: Last day of the tenth (3610th) full calendar months (plus Lease Year TERM: From the partial month, if any) immediately following the Commencement Date. Term or Lease Term (sometimes called the “Original Lease Term”): The period beginning on the Commencement Date and ending on to the Term Expiration Date, unless sooner terminated as hereinafter provided. Date ANNUAL FIXED RENT: From the Premises A Rent Commencement Date through the last day of the third Lease Year: A period per square foot of twelve (12) consecutive calendar months, commencing on the first day of January in each year, except that the first Lease Year of the Lease Term hereof shall be the period commencing on the Commencement Date and ending on the succeeding December 31, and the last Lease Year of the Lease Term hereof shall be the period commencing on January 1 of the calendar year in which the Lease Term ends, and ending with the date on which the Lease Term ends. Rent Year: Any twelve (12) month period during the Term of the Lease commencing as of the Rent Commencement Date, or as of any anniversary of the Rent Commencement Date, except that if the Rent Commencement Date does not occur on the first day of a calendar month, then (i) the first Rent Year shall further include the partial calendar month in which the first anniversary of the Rent Commencement Date occurs, and (ii) the remaining Rent Years shall be the successive twelve-(12)-month periods following the end of such first Rent Year. Commencement Date: The date on which Landlord delivers the Premises to Tenant with the Landlord’s Work substantially complete. Rent Commencement Date: The earlier of: (i) the Commencement Date, and (ii) December 16, 2018, except that if the Commencement Date has occurred and Tenant takes occupancy of the Premises or any portion thereof for any purpose (e.g., business operations, etc.) prior to December 16, 2018, then the Rent Commencement Date shall be the date on which such occupancy first occurs. Premises: A portion of the twenty-fourth (24th) floor of the Building, in accordance with the floor plan annexed hereto as Exhibit D and incorporated herein by reference, as further defined and limited in Section 2.1 hereof. Rentable Floor Area of the applicable Premises: 7,234 square feet. Annual Fixed Rent: During the Term of this Lease, provided that Annual Fixed Rent for Premises B shall be payable not commence until the Area B Rent Commencement Date; per square foot of Rentable Floor Area of the Premises for Lease Years 4-7; per square foot of Rentable Floor Area of the Premises for Lease Years 8-10. RENT COMMENCEMENT DATES: PREMISES A: Delivery Date of Premises A PREMISES B: Delivery Date of Premises B PREMISES A: 37,290 square feet of Rentable Floor Area consisting of a portion of the first floor and the entire second floor of the Building PREMISES B: 48,140 square feet of Rentable Floor Area consisting of the balance of the first floor and the entire third floor of the Building TOTAL PREMISES RENTABLE FLOOR AREA: 85,430 square feet of Rentable Floor Area. PERMITTED USES: General office uses including laboratory use for research and development purposes, subject to compliance by Tenant as followswith all applicable laws and permitting requirements PUBLIC LIABILITY INSURANCE: Rent Years Rate PSF Annual Rate 1 $73.00 $528,082.00 2 $74.83 $541,320.22 3 $76.70 $554,847.80 Tenant Electricity5,000,000.00 BROKER: See Section 5.2X.X. Xxxxxxx & Co., Inc. and Insignia/ESG TENANT'S AUTHORIZED REPRESENTATIVE: Xxxxx X. Xxxxxxxx

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subject subjects shall be constructed construed to incorporate the data stated for that subject in this Article: Landlord: BP PRUCENTER ACQUISITION BX XXXXXXX LLC, a Delaware limited liability company Present Mailing Address of Landlord: c/o Boston Properties Limited Partnership Prudential Center 000 800 Xxxxxxxx Xxxxxx, Xxxxx 0000 Xxxxxx, Xxxxxxxxxxxxx 00000-0000 Landlord's ’s Construction Representative[***] Representative Email: X.X.Xxxxxxx [***] Tenant: SEMRUSH Inc.ADVENT TECHNOLOGIES INC., a Delaware corporation Present Mailing Address of Tenant: 0 Xxxxxxxxx XxxxxxxxxOne Mifflin Place 100 Xx. Xxxxxx Xxxxxx, Xxxxx 000 XxxxxxxXxxxxxxxx, XX 00000-0000 00000 Tenant's ’s Email Address for Information Regarding Xxxxxxxx Bxxxxxxx and Statements: xxxxxxx@xxxxxxx.xxx [***] Tenant's ’s Construction RepresentativeRepresentative Email: Ainella Mussina Expiration Date: The date which is thirty-six (36) full calendar months (plus the partial month, if any) immediately following the Commencement Date. 200 Xxxxxxxxx Xxxxxx – Advent Technologies Term or Lease Term (sometimes called the “Original Lease Term”): The period beginning commencing on the Commencement Date and ending expiring on the Expiration Datelast day of the fifth (5th) Rent Year, unless sooner terminated as hereinafter providedprovided in this Lease. Lease Year: A period of twelve (12) consecutive calendar months, commencing on the first day of January in each year, except that the first Lease Year of the Lease Term hereof shall be the period commencing on the Commencement Date and ending on the succeeding December 31, and the last Lease Year of the Lease Term hereof shall be the period commencing on January 1 of the calendar year in which the Lease Term ends, and ending with the date on which the Lease Term ends. Rent Year: Any twelve (12) month period during the Term of the Lease commencing as of the Rent Commencement Date, or as of any anniversary of the Rent Commencement Date, except that if the Rent Commencement Date does not occur on the first day of a calendar month, then (i) the first Rent Year shall further include the partial calendar month in which the first anniversary of the Rent Commencement Date occurs, and (ii) the remaining Rent Years shall be the successive twelve-(12)-month periods following the end of such first Rent Year. Commencement Date: The date on upon which this Lease is executed and delivered by Landlord delivers the Premises to Tenant with the Landlord’s Work substantially complete. Rent Commencement Date: The earlier of: (i) the Commencement Date, and (ii) December 16, 2018, except that if the Commencement Date has occurred and Tenant takes occupancy of the Premises or any portion thereof for any purpose (e.g., business operations, etcTenant.) prior to December 16, 2018, then the Rent Commencement Date shall be the date on which such occupancy first occurs. Premises: A portion of the twenty-fourth (24th) floor of the Building, in accordance with the floor plan annexed hereto as Exhibit D and incorporated herein by reference, as further defined and limited in Section 2.1 hereof. Rentable Floor Area of the Premises: 7,234 square feet. Annual Fixed Rent: During the Term of this Lease, Annual Fixed Rent shall be payable by Tenant as follows: Rent Years Rate PSF Annual Rate 1 $73.00 $528,082.00 2 $74.83 $541,320.22 3 $76.70 $554,847.80 Tenant Electricity: See Section 5.2

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subject subjects shall be constructed construed to incorporate the data stated for that subject in this Article: Landlord: BP PRUCENTER ACQUISITION PODIUM DEVELOPER LLC, a Delaware limited liability company Present Mailing Address of Landlord: c/o Boston Properties Limited Partnership Prudential Center 000 Xxxxxxxx Xxxxxx, Xxxxx 0000 Xxxxxx, Xxxxxxxxxxxxx 00000-0000 Landlord's ’s Construction Representative: X.X.Xxxxxxx Xxxx Xxxxxx Tenant: SEMRUSH Rapid7, Inc., a Delaware corporation Present Mailing Address of Tenant: 0 Xxxxxxxxx Xxxxxxxxx000 Xxxxxx Xxxxxx, Xxxxx 000 XxxxxxxXxxxxx, XX 00000-0000 Xxxxxxxxxxxxx 00000 Tenant's ’s Email Address for Information Regarding Xxxxxxxx and Statements: xxxxxxx@xxxxxxx.xxx xxxxx_xxxx@xxxxx0.xxx Tenant's ’s Construction Representative: Ainella Mussina Xxxx Xxxxxxxx Tenant Preliminary Plans Date: December 22, 2017 Tenant Plans Date: May 18, 2018 Authorization to Proceed Date: Thirty (30) days after Landlord’s delivery to Tenant of the initial Total Costs Notice as provided in Section 1.1(A)(4) of Exhibit B-1. Long Lead Item Release Date: July 16, 2018 Estimated Commencement Date: June 1, 2019 Fourth Floor Rent Commencement Date: The date that is six (6) months after the Commencement Date. Outside Completion Date: December 1, 2019 Expiration Date: The date which is thirty-six (36) last day of the 126th full calendar months (plus the partial month, if any) immediately month following the Commencement Date. Term or Lease Term (sometimes called the “Original Lease Term”): : The period beginning commencing on the Commencement Date and ending on the Expiration Date, unless as such period may be sooner terminated as hereinafter providedprovided in this Lease. Term or Lease Term: The period commencing on the Commencement Date and ending on the Expiration Date, as such period may be extended or sooner terminated as provided in this Lease. Extension Options: Two (2) periods of five (5) years each, as provided in and on the terms set forth in Section 3.2 hereof. Lease Year: A period of twelve (12) consecutive calendar months, commencing on the first day of January in each year, except that the first Lease Year of the Lease Term hereof shall be the period commencing on the Commencement Date and ending on the succeeding December 31, and the last Lease Year of the Lease Term hereof shall be the period commencing on January 1 of the calendar year in which the Lease Term ends, and ending with the date on which the Lease Term ends. Rent Year: Any twelve (12) month period during the Term of the Lease commencing as of the Rent Commencement Date, or as of any anniversary of the Rent Commencement Date, except that if the Rent Commencement Date does not occur on the first day of a calendar month, then (i) the first Rent Year shall further include the partial calendar month in which the first anniversary of the Rent Commencement Date occurs, and (ii) the remaining Rent Years shall be the successive twelve-(12)-month periods following the end of such first Rent Year. Commencement Date: The date on which Landlord delivers the Premises to Tenant with the Landlord’s Work substantially complete. Rent Commencement Date: The earlier of: (i) the Commencement Date, and (ii) December 16, 2018, except that if the Commencement Date has occurred and Tenant takes occupancy of the Premises or any portion thereof for any purpose (e.g., business operations, etc.) prior to December 16, 2018, then the Rent Commencement Date shall be the date on which such occupancy first occurs. Premises: A portion of the twenty-fourth (24th) floor of the Building, in accordance with the floor plan annexed hereto as Exhibit D and incorporated herein by reference, as further defined and limited in Section 2.1 hereof. Rentable Floor Area of the Premises: 7,234 square feet. Annual Fixed Rent: During the Term of this Lease, Annual Fixed Rent shall be payable by Tenant as follows: Rent Years Rate PSF Annual Rate 1 $73.00 $528,082.00 2 $74.83 $541,320.22 3 $76.70 $554,847.80 Tenant Electricity: See Section 5.2

SUBJECTS REFERRED TO. Each reference in this Lease to any of the following subject subjects shall be constructed construed to incorporate the data stated for that subject in this Article: Landlord: BP PRUCENTER ACQUISITION LLC, a Delaware limited liability company Present Mailing Address of Landlord: c/o Boston Properties Limited Partnership Prudential Center 000 Xxxxxxxx XxxxxxPartnershipPrudential Center800 Boylston Street, Xxxxx 0000 XxxxxxSuite 1900Boston, Xxxxxxxxxxxxx 00000Massachusetts 02199-0000 8103 Landlord's ’s Construction Representative: X.X.Xxxxxxx Xxxx Xxxxx Tenant: SEMRUSH Flex Pharma, Inc., a Delaware corporation Present Mailing Address of Tenant: 0 Xxxxxxxxx Xxxxxxxxx000 Xxxxxxxx Xxxxxx, Xxxxx 000 Xxxxxxx0000Xxxxxx, XX 00000-0000 Xxxxxxxxxxxxx 00000 Tenant's ’s Email Address for Information Regarding Xxxxxxxx and Statements: xxxxxxx@xxxxxxx.xxx xxxxxxxxx@xxxx-xxxxxx.xxx Tenant's ’s Construction Representative: Ainella Mussina Expiration Date: The date which is thirty-six (36) full calendar months (plus the partial month, if any) immediately following the Commencement Date. Xxxx XxXxxx Term or Lease Term (sometimes called the “Original Lease Term”): The period beginning on Twenty four (24) calendar months (plus the partial month, if any, immediately following the Commencement Date and ending on the Expiration Date), unless extended or sooner terminated as hereinafter provided. Extension Option: None. Lease Year: A period of twelve (12) consecutive calendar months, commencing on the first day of January in each year, except that the first Lease Year of the Lease Term hereof shall be the period commencing on the Commencement Date and ending on the succeeding December 31, and the last Lease Year of the Lease Term hereof shall be the period commencing on January 1 of the calendar year in which the Lease Term ends, and ending with the date on which the Lease Term ends. Rent Year: Any twelve (12) month period during the Term of the Lease commencing as of the Rent Commencement Date, or as of any anniversary of the Rent Commencement Date, except that if the Rent Commencement Date does not occur on the first day of a calendar month, then (i) the first Rent Year shall further include the partial calendar month in which the first anniversary of the Rent Commencement Date occurs, and (ii) the remaining Rent Years shall be the successive twelve-(12)-month periods following the end of such first Rent Year. Commencement Date: The date on which Landlord delivers the Premises to Tenant with the Landlord’s Work substantially complete. Rent Commencement Date: The earlier of: (i) the Commencement DateSeptember 1, and (ii) December 16, 2018, except that if the Commencement Date has occurred and Tenant takes occupancy of the Premises or any portion thereof for any purpose (e.g., business operations, etc.) prior to December 16, 2018, then the Rent Commencement Date shall be the date on which such occupancy first occurs2017. Premises: A portion of the twenty-twenty fourth (24th) floor of the Building, in accordance with the floor plan annexed hereto as Exhibit D and incorporated herein by reference, as further defined and limited in Section 2.1 hereof. Rentable Floor Area of the Premises: 7,234 square feet. Annual Fixed Rent: During the Term of this Lease, Annual Fixed Rent shall be payable by Tenant as follows: Rent Years Rate PSF Annual Rate 1 $73.00 $528,082.00 2 $74.83 $541,320.22 3 $76.70 $554,847.80 Tenant Electricity: See Section 5.2.