UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) Under the Securities Exchange Act of 1934 (Amendment No. Two)* Reckson Associates Realty Corporation --------------------------------------------------------- (Name of Issuer) Class B Exchangeable Common Stock --------------------------------------------------------- (Title of Class of Securities) 75621K304 ------------------------------------- (CUSIP Number) 12/31/00 ----------------------------------------------------- (Date of Event which Required Filing of this Statement) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO WHICH THIS SCHEDULE IS FILED: X Rule 13d-1(b) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). CUSIP NO. 75621K304 1 NAME OF REPORTING PERSON Heitman/PRA Securities Advisors LLC IRS ID# 36-4265577 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) ---- (b) X 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware 5 SOLE VOTING POWER NUMBER OF SHARES 576,485 BENEFICIALLY OWNED BY EACH REPORTING 6 SHARED VOTING POWER PERSON WITH 0 7 SOLE DISPOSITIVE POWER 576,485 8 SHARED DISPOSITIVE POWER 0 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 576,485 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.61% 12 TYPE OF REPORTING PERSON (See Instructions) IA ITEM 1 (A) NAME OF ISSUER: Reckson Associates Realty Corporation ITEM 1 (B) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES: 225 Broadhollow Road Melville, New York 11747 ITEM 2 (A) NAME OF PERSON FILING: Heitman/PRA Securities Advisors LLC ITEM 2 (B) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE: 180 North LaSalle Street, Suite 3600 Chicago, Illinois 60601 ITEM 2 (C) CITIZENSHIP: Delaware ITEM 2 (D) TITLE OF CLASS OF SECURITIES: Class B Exchangeable Common Stock ITEM 2 (E) CUSIP NUMBER: 75621K304 ITEM 3 IF THIS STATEMENT IS FILED PURSUANT TO RULE 13D-1(B) OR 13D-2(B) OR (C), CHECK WHETHER THE PERSON FILING IS A: ITEM 3 (E) An Investment Adviser in accordance with Rule 13d-1(b)(1)(ii)(E). ITEM 4 OWNERSHIP: ITEM 4 (A) AMOUNT BENEFICIALLY OWNED: 576,485 ITEM 4 (B) PERCENT OF CLASS: 5.61% ITEM 4 (C) NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS: (i) sole power to vote or to direct the vote 576,485 (ii) shared power to vote or to direct the vote 0 (iii) sole power to dispose or to direct the disposition of 576,485 (iv) shared power to dispose or to direct the disposition of 0 ITEM 5 OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS. Not applicable. ITEM 6 OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON. Heitman/PRA Securities Advisors LLC serves as investment adviser to the Heitman Real Estate Portfolio, a registered investment company, and 345 separate account clients. Heitman Real Estate Portfolio, a Series of UAM Funds Trust, and 345 separate account clients have given dispositive power to Heitman/PRA Securities Advisors LLC, and the right to receive or the power to direct the receipt of dividends from, or proceeds from the sale of 576,485 shares (5.61%) of this issuer. ITEM 7 IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY. Not applicable. ITEM 8 IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP. Not applicable. ITEM 9 NOTICE OF DISSOLUTION OF GROUP. Not applicable. ITEM 10 CERTIFICATIONS. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purpose or effect. After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: January 31, 2001 /s/Nancy B. Lynn ----------------------- NANCY B. LYNN, Vice President