Illumina Poison Pill May Choke Roche, but Push Up Bids (Update 1)

Updated to reflect share prices and additional data throughout. NEW YORK ( TheStreet) -- Illumina ( ILMN) is adopting a poison to fend off a hostile $5.7 billion bid made by Roche on Tuesday.

The "shareholders rights plan" -- which was announced by Illumina on Thursday -- adds to the company's argument that the Roche bid comes at an "opportunistic" price just as it is developing genetic sequencing machinery that may tap a growing use in personal cancer treatment therapies.

While Roche's bid represented an 18% premium to Illumina's shares, analysts and investors signaled that the bid may need to rise. Enacting a poison pill now may force Roche or other possible bidders to win over shareholders with big price increases.

The poison pill will allow Illumina to give out one preferred stock purchase right as a dividend to all shareholders if a buyer accumulates 15% of the company's stock, diluting the worth of a hostile bid. Illumina said in a statement that the plan "is designed to deter coercive or otherwise unfair takeover tactics."

"By adopting the poison pill, Roche is going to have to offer more money," says Maxim Group analyst Bryan Brokmeier, who rates the company buy with a price target of $53. Brokmeier argues that with the poison pill in place, any bidders will need to offer a price to win over a majority of shareholders, offsetting those who would enact their rights to ice a takeover. Because there are many logical buyers of Illumina, the poison pill and Roche's offer may just catalyze a bidding war.

Biotech firms with medical diagnostics divisions like Abbott Laboratories ( ABT), Johnson & Johnson ( JNJ) may look at Illumina's sequencing machinery as a strong acquisition, while medical equipment makers like Becton, Dickinson ( BDX) , Agilent ( A) and Siemens Healthcare ( SI) could also show interest, according to Brokmeier.

The poison pill will also be active for other Illumina suitors, not just Roche. "It's going to make the deal more expensive for Roche or for any other potential bidder," adds Brokmeier.

"We believe the bid by Roche will be a long, drawn out process, reminiscent of Roche's purchase of Ventana Medical in 2007-2008," says Peter Lawson of Mizuho Securities. In previous hostile bids for U.S. based companies, Roche finalized acquisitions by upping its initial offers. Roche had to up a previous $43.7 billion hostile offer for Genentech and a $3 billion bid for Ventana Medical Systems by over 10% for the bids to close.

The same price increases are expected in Roche's Illumina bid, even as company management signaled no intention to raise their offer. On Wednesday, Illumina shares traded 24% higher than Roche's bid to more than $55 a share, with many analysts signaling a need for a price increase. "We view this as the initial bid and the initial move, expect more from Roche," adds Lawson.

The poison pill also may force a takeover premium that credits Illumina for its long-term prospects, as some revenue sources are jeopardized by looming federal research budget cuts in the short term.

Illumina has a near 50% market share in making high-speed DNA sequencing machines; however, the company's stock was cut in half in 2011 as revenue slowed on declining federal research budgets and it dropped its earnings outlooks. Illumina draws a third of its revenue from the National Institutes of Health, according to Bloomberg.

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Shares of Illumina fell more than 4.7% to $52.54 in early Thursday trading on news of the poison pill.

For more on Illumina shares, see "8 biotech stocks to watch.

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