acad424b7-101807.htm
 
 
Filed Pursuant to Rule 424(b)(7)
                                                              Registration Statement No. 333-139950 

PROSPECTUS SUPPLEMENT No. 4
 
(To Prospectus dated January 12, 2007,
as supplemented by the Prospectus
Supplement dated April 2, 2007,
Prospectus Supplement No. 2 dated
April 23, 2007 and Prospectus Supplement
No. 3 dated July 24, 2007)
 
$115,000,000
 
Acadia Realty Trust
 
3.75% Convertible Notes due 2026 and
Common Shares Issuable Upon Conversion of the Notes
 
           This prospectus supplement no. 4 supplements and amends the prospectus dated January 12, 2007 (as amended by the prospectus supplement dated April 2, 2007, prospectus supplement no. 2 dated April 23, 2007 and prospectus supplement no. 3 dated July 24, 2007) relating to the sale from time to time by the selling security holders named in the prospectus supplement dated April 2, 2007 and in this prospectus supplement of up to $115,000,000 aggregate principal amount of our 3.75% Convertible Notes due 2026 and our common shares issuable upon conversion of the notes.
 
           This prospectus supplement should be read in conjunction with and accompanied by, and is qualified by reference to, the prospectus and the prospectus supplement dated April 2, 2007, except to the extent that the information in this prospectus supplement supersedes any information contained in those documents.
 
           Our common shares are listed on the New York Stock Exchange under the symbol “AKR.”  On October 16, 2007, the last reported sales price for our common shares on the New York Stock Exchange was $26.60 per share.
 
      
   Investing in the notes and our common shares involves risks.  See “Risk Factors” beginning on page S-7 of the prospectus supplement dated April 2, 2007, as well as in the documents incorporated by reference in the prospectus supplement.
 
 
           Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.
 
 
The date of this prospectus supplement is October 17, 2007

 
 
SELLING SECURITY HOLDERS
 
     The information appearing in the table below with respect to the selling security holders named therein supplements and supersedes the information with respect to such selling security holders in the table appearing under the heading “Selling Security Holders” in the prospectus supplement dated April 2, 2007. The information is based solely on information provided to us by or on behalf of the selling security holders on or prior to October 16, 2007. The number of common shares issuable upon conversion of the notes shown in the table below assume conversion of the full amount of notes held by each holder at the initial conversion rate of 32.4002 common shares per $1,000 principal amounts of the notes. This conversion rate is subject to adjustments in certain circumstances. Because the selling security holders may offer all or some portion of the notes or common shares issuable upon conversion of the notes, we have assumed for purposes of the table below that the named selling security holders will sell all of the notes or convert all of the notes and sell all of the common shares issuable upon conversion of the notes offered pursuant to this prospectus supplement and the prospectus supplement dated April 2, 2007. In addition, the selling security holders identified below may have sold, transferred or otherwise disposed of all or a portion of their notes since the date on which they provided the information regarding their notes in transactions exempt from the registration requirements of the Securities Act.
 
 
 
 
Name
 
Principal
Amount of
Notes
Beneficially
Owned and
Offered
Hereby (1)
 
 
Percentage of
Outstanding
Notes
Beneficially
Owned Prior to
this Offering
 
 
Common Shares
Issuable Upon
Conversion of
the Notes and
Available for
Resale(1)(2)
 
 
 
Other
Common 
Shares
Beneficially
Owned
 
 
Percentage of
Outstanding
Common Shares
Beneficially
Owned Following
the Offering
           
           
Caisse de depot et placement du Quebec (3)
7,500,000
6.5%
243,001
--
--
           
Linden Capital LP (4)
11,500,000
10.0%
372,602
--
--
 
______________
 

(1)
Amounts indicated may be in excess of the total amount registered due to sales or transfers exempt from the registration requirements of the Securities Act since the date upon which the selling security holders provided us with the information regarding their holdings of notes and common shares for inclusion herein.
 
(2)
Consists of common shares issuable upon conversion of the notes, assuming the initial conversion rate of 32.4002 common shares per $1,000 principal amount of notes and a cash payment in lieu of any fractional share interests. The conversion price is subject to adjustment as described in the prospectus supplement dated April 2, 2007 under “Description of Notes—Conversion Rights.”
 
(3)
Ginette Depelteau and Michel Bourque exercise voting and/or dispositive powers with respect to these securities.
   
(4)
Siu Min Wong exercises voting and/or dispositive powers with respect to these securities.