WATERTOWN, Mass.–(BUSINESS WIRE)–Tectonic Therapeutic, Inc. (NASDAQ: TECX), a clinical stage biotechnology company focused on the discovery and development of therapeutic proteins and antibodies that modulate the activity of GPCRs, today announced the completion of its previously announced merger with AVROBIO, Inc. The combined company will operate under the name Tectonic Therapeutic, Inc., and its shares are expected to begin trading on the Nasdaq Global Market on June 21, 2024 under the ticker symbol “TECX”.
Concurrent with the merger, Tectonic completed a $130.7 million private placement with a syndicate of new and existing investors, including a major mutual fund, TAS Partners, 5AM Ventures, EcoR1 Capital, Polaris Partners, certain funds and accounts advised by Farallon Capital Management, Vida Ventures, the PagsGroup, and other undisclosed investors. Following these transactions, Tectonic’s cash, cash equivalents and investments of approximately $181 million at close, before payment of final transaction-related expenses, is expected to fund current operational plans into mid-2027.
“It’s an exciting time to be transitioning into a publicly-traded company. We expect to initiate a randomized Phase 2 clinical trial for our lead program, TX45, in Group 2 Pulmonary Hypertension in the setting of Left Heart Disease with Preserved Ejection Fraction in the second half of this year. Results from the ongoing Phase 1a clinical trial in this patient population are expected in mid-2024, to be followed by Phase 1b results expected in 2025 and results from the Phase 2 clinical trial expected in 2026. We also expect to select a potential development candidate for our second program targeting a treatment for HHT, later this year, with the start of corresponding clinical studies anticipated to commence in the fourth quarter of 2025 or the first quarter of 2026,” said Alise Reicin, M.D., President and Chief Executive Officer of Tectonic.
“We believe we are strongly positioned to enter the public markets at this time, with a solid financial foundation, investor syndicate and leadership team, and with several potential catalysts over the next two years, setting the stage for meaningful value creation. This transaction represents a major milestone in the evolution of Tectonic and in our efforts to bring innovative medicines to patients,” added Dr. Reicin.
Tectonic’s lead program, TX000045 (“TX45”), is an Fc-relaxin fusion molecule that activates the RXFP1 receptor, the GPCR target of the hormone relaxin. Tectonic believes TX45’s pharmacological profile, the direct result of applying Tectonic’s protein engineering capabilities, has the potential to overcome the limitations that have impeded previous attempts to develop relaxin as a therapeutic protein.
Tectonic’s second program addresses Hereditary Hemorrhagic Telangiectasia (“HHT”), the second-most common genetic bleeding disorder. It has been estimated that there are approximately 70,000 HHT patients in the United States. The target population for development is the 10-20% of HHT patients who are considered to have severe disease because of frequent bleeding, anemia, and in some cases, who require blood transfusions.
Transaction Details
In connection with the closing of the merger, AVROBIO enacted a 1 for 12 reverse stock split of its common stock and issued a non-transferable contingent value right (a “CVR”) to AVROBIO shareholders of record immediately prior to the closing, which does not include the former holders of shares of Tectonic or the private placement investors. Holders of a CVR will be entitled to receive certain cash payments from proceeds received by Tectonic, if any, related to the dispositions of AVROBIO’s pre-transaction legacy assets. Following the reverse stock split and based on the final exchange ratio of approximately 0.5344 shares of AVROBIO common stock for each share of Tectonic common stock, at the closing of the merger, there are approximately 15,371,780 shares of the combined company’s common stock outstanding on a diluted basis, with prior AVROBIO stockholders owning approximately 24.8% on a diluted basis and prior Tectonic stockholders (including investors in the private placement) holding approximately 75.2% of the combined company’s outstanding common stock on a diluted basis.
Leerink Partners served as exclusive financial advisor to Tectonic and Cooley LLP served as legal counsel to Tectonic. Leerink Partners and TD Cowen acted as joint placement agents for Tectonic’s private placement. Piper Sandler acted as capital markets advisor to Tectonic. TD Cowen served as lead financial advisor to AVROBIO, Houlihan Lokey served as co-financial advisor to AVROBIO, and Goodwin Procter LLP served as legal counsel to AVROBIO.
About Tectonic
Tectonic Therapeutic is a biotechnology company focused on the discovery and development of therapeutic proteins and antibodies that modulate the activity of G-protein coupled receptors (“GPCRs”). Leveraging its proprietary technology platform called GEODe™ (“GPCRs Engineered for Optimal Discovery”), Tectonic is focused on developing biologic medicines that overcome the existing challenges of GPCR-targeted drug discovery and harness the human body to modify the course of disease. Tectonic focuses on areas of significant unmet medical need, often where therapeutic options are poor or nonexistent, as these are areas where new medicines have the potential to improve patient quality of life. Tectonic is headquartered in Watertown, Massachusetts. For more information, please visit www.tectonictx.com and follow @TectonicTx on X (formerly Twitter) and LinkedIn.
