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Biogen Inc. Information Request Form

Levi & Korsinsky announces the filing of a class action lawsuit in the United States District Court for the District of Massachusetts on behalf of shareholders of Biogen Inc. (NASDAQGS: BIIB) who purchased shares between January 29, 2015 and July 23, 2015.

The Complaint alleges that Biogen and certain of its executive officers and directors misrepresented the financial benefits that Biogen would receive from the sale of its drug TECFIDERA. TECFIDERA is one of Biogen’s most important drug products. On multiple occasions during the first half of 2015, the defendants predicted 2015 revenue growth between 14% and 16% over 2014. Specifically, the market was told that “TECFIDERA will represent the largest contributor to [Biogen’s] overall revenue growth.” But then, on July 24, 2015, Biogen announced a revision to its previously issued revenue growth guidance, reducing its expected growth by half “based largely on revised expectations for the growth of TECFIDERA.” On this news, the trading price of Biogen common stock dropped from a closing price of $385.05 on July 23, 2015 to close at $300.03 per share on July 24, 2015, a loss of more than 22%, on extremely heavy trading volume. If you suffered a loss in Biogen you have until October 19, 2015 to request that the Court appoint you as lead plaintiff. Your ability to share in any recovery doesn’t require that you serve as a lead plaintiff.

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Levi & Korsinsky, LLP does not share your information with others. There is no cost or obligation for you to submit.

This submission does not create an attorney-client relationship. If we believe that you might be an appropriate lead plaintiff, we will contact you to discuss whether to establish an attorney-client relationship.

This letter confirms that you have retained Levi & Korsinsky, LLP to represent you as a named plaintiff in a shareholder action involving Biogen Inc.

We agree to advance all expenses in the litigation, which means that you are not liable to pay any of the expenses of the lawsuit, whether attorneys' fees or costs. Regardless of the result, we will never ask you to directly pay for any attorneys' fees or costs. Should we obtain a favorable result, we may ask the court to award us compensation to be paid by the defendants or as a portion of any class benefit, but, again, we will never ask you to directly pay any of the costs of this litigation.

As the client you are entitled to direct the litigation in any way you deem proper, and may at any time order us to dismiss the case or opt-out. Should you choose to do so, we will never ask you to reimburse us directly for any legal fees or expenses. During the course of this litigation, we may employ and/or work with other law firms to prosecute your case.

We look forward to representing you and other Biogen shareholders.

Sincerely,

Levi & Korsinsky,LLP

Joseph Levi

AGREED: Sign Name Clear