Pharma giant Bristol Myers Squibb (BMY) announced today that it will acquire clinical-stage biotech Mirati Therapeutics (MRTX) for $58 per share in an all-cash deal totaling $4.8 billion. Mirati stockholders will also receive a contingent value right worth up to $12 per share, bringing the total potential deal value to $5.8 billion.
The acquisition will expand Bristol Myers Squibb’s oncology portfolio and pipeline. Mirati’s lead asset is KRAZATI (adagrasib), the first and only FDA-approved drug targeting the KRAS G12C mutation. KRAS mutations occur in about 13% of non-small cell lung cancers (NSCLC) and are linked to poor prognosis.
KRAZATI was granted accelerated approval in October 2022 as a second-line treatment for KRAS G12C-mutated NSCLC. It is also being tested in combination with a PD-1 inhibitor as a potential first-line NSCLC therapy. Beyond lung cancer, KRAZATI has shown promise in colorectal and pancreatic cancers.
“With multiple targeted oncology assets including KRAZATI, Mirati is another important step forward in our efforts to grow our diversified oncology portfolio,” said Bristol Myers CEO Giovanni Caforio. The company aims to leverage its global commercial infrastructure to maximize KRAZATI’s reach.
Mirati’s earlier-stage pipeline includes MRTX1719, an innovative PRMT5 inhibitor, as well as several KRAS-targeted agents. MRTX1719 could be the first targeted therapy for MTAP-deleted tumors, which represent about 10% of cancers.
“Bristol Myers Squibb’s global scale, resources and commitment to innovation will enable Mirati’s therapeutics to benefit more patients, faster,” said Mirati CEO Charles Baum.
Strategic Fit
Lung cancer is the most common cancer and leading cause of cancer death globally. The addition of KRAZATI establishes Bristol Myers as a leader in developing targeted lung cancer therapies. Mirati also expands Bristol Myers’ presence in colorectal and pancreatic cancers.
The acquisition builds on Bristol Myers’ recent deals for Turning Point Therapeutics and Eisai’s oncology business. As patents expire for the pharma giant’s top-selling cancer immunotherapy Opdivo, it aims to refill its oncology pipeline.
“With a strong strategic fit, great science and clear value creation opportunities for our shareholders, the Mirati transaction is aligned with our business development goals,” said Caforio.
Broader Biopharma Implications
The blockbuster Mirati acquisition also has significant implications for the broader biotech and biopharma sector. As large pharmas look to replenish pipelines, M&A activity has intensified. The deal shows that promising clinical-stage biotechs with innovative oncology pipelines continue to be attractive buyout targets.
Analysts note the 52% buyout premium Bristol Myers paid as a sign of their urgency to tap into Mirati’s next-gen oncology science. For startup biotechs pursuing novel approaches in high-value areas like oncology, it underscores the possibility of commanding large premium buyouts from “big pharma” acquirers.
However, smaller players also face the risk of being squeezed out as consolidation accelerates. The Mirati deal exemplifies the scaling up required to compete in cutting-edge areas like targeted cancer therapies. Smaller biotechs could find it increasingly difficult to independently develop and commercialize new drugs in the future.
That said, smaller biotechs may also benefit from big pharma’s growing appetite for M&A. The premiums being offered for innovative science and pipelines create lucrative exit opportunities for startups. And the influx of capital from buyouts can fund the next generation of biotech innovation.
Deal Terms
Under the definitive agreement, Bristol Myers will pay $58 per share for Mirati’s outstanding common stock. This represents a 52% premium over Mirati’s 30-day volume-weighted average price. Including Mirati’s $1.1 billion cash balance, the total equity value comes to $4.8 billion.
Each Mirati shareholder will also receive a CVR worth up to $12 per share. This contingent value right payment is triggered if Mirati’s MRTX1719 is approved within 7 years as a NSCLC therapy after two or fewer systemic treatments. The CVR adds up to $1 billion in potential additional value.
The transaction is expected to close in the first half of 2024, pending approval from regulators and Mirati shareholders. Bristol Myers anticipates the deal will be dilutive to its non-GAAP earnings through 2025 as it integrates Mirati. It plans to finance the acquisition through cash and debt offerings.
Caforio stated: “With a strong strategic fit, great science and clear value creation opportunities for our shareholders, the Mirati transaction is aligned with our business development goals.” The deal furthers Bristol Myers Squibb’s transformation into a leading oncology-focused biopharma.
