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AI brief of an SEC Form 8-K · TransMedics Group (TMDX)

TransMedics signs Somerville, MA headquarters lease, about 498,286 sq ft

Neutral Impact 4 of 5 m&a Written later

TransMedics entered a lease on January 8, 2026 for about 498,286 square feet at 188 Assembly Park Drive in Somerville, Massachusetts, to serve as its new headquarters beginning on or before January 1, 2028, replacing its Andover site. The filing also discloses initial annual base rent of about $23.9 million, an $18 million letter of credit security deposit, and the purchase of two adjacent parcels for $15.0 million each.

Key points

  • Lease covers about 498,286 square feet; base rent initially about $23.9 million per year, rising 2% annually
  • Lease initial term is 192 months from the Rent Commencement Date, with two ten-year extension options
  • Security deposit delivered as a letter of credit of about $18 million
  • On January 8, 2026, the company bought two adjacent Somerville parcels for $15.0 million each, plus related costs

The filing

CompanyTransMedics Group (TMDX)
Form8-K, current report
Filed with the SECJan 12, 2026, 8:00 AM ET
Accession number0001193125-26-009816

Items reported: 1.01 Material Definitive Agreement8.01 Other Events

Read the filing on SEC.gov ↗

Written by AI on Nov 8, 2026, 1:49 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on January 12, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.