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Eli Lilly And Company Leases 75,000 Square Feet At 645 Summer Street In Boston

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LEASED

Massachusetts

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Life Sciences75,000 SF
Leased 10/20/2025
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LEASED

Eli Lilly And Company Leases 75,000 Square Feet At 645 Summer Street In Boston

645 Summer Street

See Similar Deals
Life Sciences75,000 SF
Leased 10/20/2025
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Summary

MASSACHUSETTS
Asset Type:Life Sciences
Price Per Square Foot:$0
Total Square Footage:75,000 SF
Transaction Type:Lease

The property involved in this transaction is a life sciences asset located at 645 Summer Street in Boston, MA. The total square footage of the building is 75,000, and it serves as a significant expansion for the tenant. The asset is notably positioned to enable advanced research activities in the life sciences sector.

Summary of transaction details:

  • Property Type: Life Sciences
  • Transaction Amount: Not specified
  • Address: 645 Summer Street
  • Market: Boston, MA
  • Landlord: Daniel Fournier - Oxford Properties Group
  • Tenant: David A. Ricks - Eli Lilly and Company

This lease represents a strategic move for Eli Lilly and Company, highlighting their commitment to enhancing research capabilities in Boston. The agreement involves the entirety of the 75,000-square-foot facility, effectively consolidating their research activities and doubling their operational space in the Boston Seaport area. This expansion aligns with their focus on RNA and DNA-based therapies and complements the recent establishment of the Lilly Seaport Innovation Center.

Details

LEASED
IMAGE: David A. Ricks & Daniel Fournier DATE: 10/20/2025 ADDRESS: 645 Summer Street MARKET: Boston, MA ASSET TYPE: Life Sciences ~ SF: 75,000 LANDLORD: Daniel Fournier - Oxford Properties Group (@OxfordPropGroup) TENANT: David A. Ricks (@DaveaRicks) - Eli Lilly and Company (@EliLillyCo) NOTE: Eli Lilly is expanding its Boston Seaport footprint by leasing the entire 75,000-square-foot building at 645 Summer St., doubling its space and consolidating its research activities. The expansion supports Lilly’s focus on RNA and DNA-based therapies across multiple disease areas, complementing its recent opening of the Lilly Seaport Innovation Center and its shift of the local hub from Cambridge to Boston.

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Deal Type
Effective Rent (Annual)

$4,298,954.74

Total Lease Value

$42,989,547.42

Net Landlord Cash Flow$4,298,954.74