GlaxoSmithKline Strikes $5B M&A Deal With Tesaro In Quest To Boost Oncology Franchise

The year has been good for pharma and biotech companies, with earnings, drug approvals and M&A fueling strong buying in the space. Another multibillion-dollar deal was announced Monday.

What Happened

Large-cap biotech GlaxoSmithKline plc GSK and TESARO Inc TSRO announced a definitive agreement under which the former will acquire the latter for $5.1 billion in cash, including the assumption of Tesaro's debt.

Deal Rationale: strengthening of the London-based pharma giant's business and accelerating the build of its pipeline and commercial capability in oncology.

Terms Of The Deal: The acquisition has been struck for a per-share price of $75, representing a 110-percent premium to Tesaro's 30-day volume-weighted average price of $35.67. The deal price is at a 62-percent premium to Tesaro's closing price Friday.

The proposed deal has been vetted by the boards of both companies. A subsidiary of GlaxoSmithKline will begin a tender offer for all issued and outstanding shares of Tesaro within the next 10 business days.

Financial Impact: GlaxoSmithKline expects the deal to be dilutive to its adjusted EPS for the first two years by mid-to-high single-digit percentages, with the dilutive impact waning thereafter. By 2022, the company expects the transaction to turn accretive to adjusted EPS.

Why It's Important

The acquisition of Tesaro brings to GlaxoSmithKline a key oncology drug, Zejula, a PARP inhibitor approved for use in the U.S. and Europe.

It is currently approved as a treatment for adult patients with recurrent ovarian cancer who are in response to platinum-based chemotherapy, regardless of BRCA mutation or biomarker status.

Tesaro is also working on clinical trials to expand the use of Zejula as a first-line maintenance treatment for ovarian cancer, both as a monotherapy as well as in combinations.

The company expects to report the results from the first of these studies in the second half of 2019. 

Zejula is being evaluated for multiple cancer types.

"Our strong belief is that PARP inhibitors are important medicines that have been underappreciated in terms of the impact they can have on cancer patients. We are optimistic that Zejula will demonstrate benefit in patients with ovarian cancer beyond those who are BRCA-positive as front-line treatment," Hal Barron, GSK's chief scientific officer and president of R&D, said in a statement.

GlaxoSmithKline is bolstering its pipeline and R&D; it made a $300 million investment in consumer genetics company 23andMe earlier this year. 

What's Next

The Tesaro deal is subject to satisfaction of customary closing conditions, including the tender offer of at least one share more than 50 percent of the outstanding shares and the securing of regulatory approvals, including clearance from the Federal Trade Commission.

The deal is expected to close in the first quarter of 2019. 

In pre-market trading Monday, Tesaro shares were jumping 59.14 percent to $73.81, while GlaxoSmithKline was slipping 6.97 percent to $38.95.

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Posted In: BiotechNewsM&ATrading Ideas23andMeZejula
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