SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM 6-K
 
REPORT OF FOREIGN ISSUER
Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934
 
For the month of May 2007
 
Commission File Number 000-51122
 
pSivida Limited
(Translation of registrant’s name into English)
 
Level 12 BGC Centre
28 The Esplanade
Perth WA 6000
Australia
(Address of principal executive offices)
 
(Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F).
 
Form 20-F ý        Form 40-F o
 
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):
 
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):
 
Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
 
Yes o        No ý
 
If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- ___.
 
The document attached as Exhibit 99.1 to this Report on Form 6-K is hereby incorporated by reference herein and into the following registration statements: (i) the Registrant's Registration Statement on Form F-3, Registration No. 333-132776; (ii) the Registrant's Registration Statement on Form F-3, Registration No. 333-132777; (iii) the Registrant's Registration Statement on Form F-3, Registration No. 333-135428; (iv) the Registrant's Registration Statement on Form F-3, Registration No. 333-141083; and (v) the Registrant's Registration Statement on Form F-3, Registration No. 333-141091.
 
SIGNATURE
 
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant, pSivida Limited, has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
 
Date: May 7, 2007
     
  PSIVIDA LIMITED
 
 
 
 
 
 
  By:   /s/ Michael J. Soja
 
Michael J. Soja
  Vice President, Finance and Chief Financial Officer
 
 
 

 

EXHIBIT INDEX
 
EXHIBIT 99.1:
ASX Release: Appendix 3Z: Final Director’s Interest Notice (Roger Aston)

 
 

 
 
Appendix 3Z
Final Director’s Interest Notice

Rule 3.19A.3
 
Appendix 3Z

Final Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.
 
Introduced 30/9/2001.
 
Name of entity  pSivida Limited 
   
ABN  78 009 232 026 
 
We (the entity) give ASX the following information under listing rule 3.19A.3 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of director
Dr Roger Aston
   
Date of last notice
3 January 2007
   
Date that director ceased to be director
1 May 2007

Part 1 - Director’s relevant interests in securities of which the director is the registered holder
In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Number & class of securities
 
5,718,586 Ordinary Fully Paid Shares
500,000 Unlisted options for ordinary shares @ 61 cents expiring 31 December 2007
549,111 Unlisted options for ordinary shares @ 118 cent expiring 5 August, 2009

Part 2 - Director’s relevant interests in securities of which the director is not the registered holder
In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust
 
Name of holder & nature of interest   
Number & class of securities 
Note: Provide details of the circumstances giving rise to the relevant interest     
     
Equity (Trust) Jersey Ltd (Beneficial Owner)   1,475,000  
Ordinary Full Paid Shares escrowed for a period of 6 months from the completion of the CDS acquisition.
 
     
Newtonmore Biosciences Pty Ltd
  500,000  
Unlisted options for ordinary shares @ 118 cent expiring 5 August, 2009
 
 
   
+ See chapter 19 for defined terms.   
   
30/9/2001 
Appendix 3Z Page 1
 

 
Appendix 3Z
Final Director’s Interest Notice


Part 3 - Director’s interests in contracts

Detail of contract
 
   
Nature of interest
 
   
Name of registered holder (if issued securities)
 
   
No. and class of securities to which interest relates
 
 
 
   
+ See chapter 19 for defined terms.   
   
Appendix 3Z Page 2 
30/9/2001