Bicara Therapeutics Inc. Enters Sublease for Boston HQ

What Happened
Bicara Therapeutics Inc. (BCAX) filed an 8-K (Item 1.01) reporting that on August 21, 2026 it entered into a Sub-Sublease Agreement with Wayfair LLC (as sublandlord) to lease approximately 35,090 square feet at 10 St. James Avenue, Boston, MA for its new corporate headquarters. The filing was made on August 25, 2026 and the agreement is filed as Exhibit 10.1.

Key Details

• Space: ~35,090 sq ft at 10 St. James Avenue, Boston, MA 02116.
• Parties: Bicara Therapeutics (subtenant) and Wayfair LLC (sublandlord); landlord is Liberty Mutual Insurance Company and overlandlord is MT Back Bay One LLC.
• Term & timing: Commencement date is the later of (i) October 1, 2026 or (ii) the date of full execution of required consents; the sublease ends on the earlier of September 30, 2028 or termination per its terms.
• Rent & deposit: Base rent is $105,279 per month, which becomes payable nine months after the Commencement Date. Bicara paid a security deposit of $210,540 upon entering the sublease.
• Contract terms: The sublease includes customary events of default, representations, warranties and covenants; full text is in Exhibit 10.1.

Why It Matters
This agreement establishes a formal lease obligation and a near-term cash commitment (security deposit paid) for Bicara’s corporate headquarters. Investors should note the monthly base rent amount and the deferred rent start (nine months after commencement), the relatively short maximum lease term through September 30, 2028, and the involvement of required landlord/overlandlord consents that affect the lease commencement. These items are relevant to Bicara’s operating cost profile and near-term cash planning.