Business analytics firm Sigma Computing has signed a lease expansion deal at One Madison Avenue, growing its presence in the office tower to a total of 92,363 square feet, building owner SL Green told ...

SL Green Realty leases 64,077 square feet at One Madison Avenue to Sigma Computing, now 78.1% leased. SL Green Realty Corp., Manhattan's largest office landlord, has announced a new lease with Sigma ...

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SL Green Realty Corp. SLG recently announced the signing of a new lease with Sigma Computing, Inc. for 64,077 square feet on a portion of the 3rd floor at One Madison Avenue, resulting in the property ...