Crucell (CRXLY) SC 13D CRUCELL / Onroerend Goed Beheer- en Beleggingsmaatschappij A. van Herk B.V. ownership change

EXHIBIT 1

SCHEDULE 13D JOINT FILING AGREEMENT

In accordance with the requirements of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and subject to the limitations set forth therein, the parties set forth below agree to jointly file the Schedule 13D (including amendments thereto) to which this joint filing agreement is attached, and further agree that this Joint Filing Agreement be included as an exhibit to such joint filing. In evidence thereof, the undersigned, being duly authorized, have executed this Joint Filing Agreement this 26th day of January 2011.

ONROEREND GOED BEHEER- EN BELEGGINGSMAATSCHAPPIJ A. VAN HERK B.V.
By:	/s/Adrianus van Herk
Name: Adrianus van Herk
Title: Authorized Person
	/s/Adrianus van Herk
ADRIANUS VAN HERK
A. VAN HERK HOLDING B.V.
By:	/s/Adrianus van Herk
Name: Adrianus van Herk
Title: Authorized Person
VAN HERK MANAGEMENT SERVICES B.V.
By:	/s/Adrianus van Herk
Name: Adrianus van Herk
Title: Authorized Person