SOURCE: Crucell N.V.

December 22, 2006 07:04 ET

Rhein Biotech shareholders approve merger with Crucell subsidiary

LEIDEN, NETHERLANDS -- (MARKET WIRE) -- December 22, 2006 --


Rhein Biotech shareholders approve merger with Crucell subsidiary

Leiden, The Netherlands, December 22, 2006 - Dutch biotechnology company Crucell N.V. (Euronext, NASDAQ: CRXL; Swiss Exchange: CRX) has announced that Rhein Biotech N.V. shareholders, voting at a general meeting held earlier today, approved to effectuate the legal merger with Berna Rhein B.V, a Crucell group company. Rhein Biotech N.V. shareholders will receive 1.158 Crucell N.V. shares in exchange for each Rhein Biotech N.V. share held.

Crucell N.V. anticipates that the merger will be executed on Wednesday, December 27. Effective December 28, Rhein Biotech N.V. will cease to exist leading to the de-listing of its shares at the Frankfurt Stock Exchange. On the same day, the relevant number of Crucell N.V. shares will be delivered to the persons holding Rhein Biotech N.V. shares at the end of the last trading day (December 27) with any remaining fraction to be settled in cash.

Bearer shares will be settled through the book-entry facilities of Clearstream Banking A.G. and its participants. Shareholders do not need to take any action themselves.

Event Chronology

27 December 2006: Execution notarial deed of merger. The merger will take effect one day after the execution of the deed of merger.

27 December 2006: Last day of trading in Rhein Biotech N.V. shares on the Frankfurt stock exchange.

27 December 2006(after close of trading): Record date for exchange of Rhein Biotech N.V. shares into Crucell N.V. shares (with remaining fraction to be settled in cash)

28 December: Rhein Biotech N.V. ceases to exist.

28 December 2006: Issuance and delivery of Crucell N.V. shares to eligible holders of Rhein Biotech N.V. shares as of the record date with any remaining fraction to be settled in cash).

About Crucell

Crucell N.V. (Euronext, NASDAQ: CRXL; Swiss Exchange: CRX) is a biotechnology company focused on research, development and worldwide marketing of vaccines and antibodies that prevent and treat infectious diseases. Its vaccines are sold in public and private markets across the globe. Crucell's core portfolio includes a vaccine against hepatitis B, a fully-liquid vaccine against five important childhood diseases, and a virosome-adjuvanted vaccine against influenza. Crucell also markets travel vaccines, such as the only oral anti-typhoid vaccine, an oral cholera vaccine and the only aluminum-free hepatitis A vaccine on the market. The Company has a broad development pipeline, with several Crucell products based on its unique PER.C6® production technology. The Company licenses this and other technologies to the biopharmaceutical industry. Important partners and licensees include DSM Biologics, sanofi aventis, GSK and Merck & Co. Crucell is headquartered in Leiden (the Netherlands), with subsidiaries in Switzerland, Spain, Italy, Sweden, Korea and the US. The Company employs over a 1000 people. For more information, please visit

Forward-looking statements

This press release contains forward-looking statements that involve inherent risks and uncertainties. We have identified certain important factors that may cause actual results to differ materially from those contained in such forward-looking statements. For information relating to these factors please refer to our Form 20- F, as filed with the U.S. Securities and Exchange Commission on July 6, 2006, and the section entitled "Risk Factors". The Company prepares its financial statements under generally accepted accounting principles in the United States (US GAAP) and Europe (IFRS).

For further information please contact:

Crucell N.V.                For Crucell in the US:
Leonard Kruimer             Redington, Inc.
Chief Financial Officer     Thomas Redington
Tel. +31-(0)71-524 8722     Tel. +1 212-926-1733

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