UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A AMENDMENT NO. 1 TO CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 25, 2001 Boston Properties, Inc. (Exact name of Registrant as specified in its charter) Delaware 1-13087 04-2473675 (State or other jurisdiction (Commission file number) (IRS employer of incorporation) identification no.) 800 Boylston Street, Suite 400 Boston, Massachusetts 02199-8001 (Address of principal executive offices) (Zip Code) (617) 236-3300 (Registrant's telephone number, including area code)

Boston Properties, Inc. (the "Company") hereby amends its Current Report on Form 8-K dated April 25, 2001, filed with the Securities and Exchange Commission on May 10, 2001,to amend Item 7 in its entirety to include required financial statements, pro forma financial information and certain exhibits. ITEM 7. Financial Statements, Pro Forma Financial Information and Exhibits. (a) Financial Statements under Rule 3-14 of Regulation S-X: Combined Statement of Revenue over Certain Operating Expenses of Citigroup Center for the year ended December 31, 2000 and for the three months ended March 31, 2001 (unaudited). (b) Pro Forma Financial Information: Pro Forma Consolidated Balance Sheet as of March 31, 2001 (unaudited). Pro Forma Consolidated Statements of Operations for the three months ended March 31, 2001 (unaudited) and for the year ended December 31, 2000 (unaudited). (c) Exhibits Exhibit No. ----------- 23.1 Consent of PricewaterhouseCoopers LLP, Independent Accountants. 99.1 Contract of Sale, dated as of February 6, 2001, by and between Dai- Ichi Life Investment Properties, Inc., as seller, and Skyline Holdings LLC, as purchaser. * 99.2 Agreement to Enter Into Assignment and Assumption of Unit Two Contract of Sale, dated as of February 6, 2001, by and between Dai- Ichi Life Investment Properties, Inc., as assignor, and Skyline Holdings II LLC, as assignee. * 99.3 Contract of Sale, dated as of November 22, 2000, by and between Citibank, N.A., as seller, and Dai-Ichi Life Investment Properties, Inc., as purchaser. * 99.4 Assignment and Assumption Agreement, dated as of April 25, 2001, by and between Skyline Holdings LLC, as assignor, and BP/CGCenter I LLC, as assignee. * 99.5 Assignment and Assumption Agreement, dated as of April 25, 2001, by and between Skyline Holdings II LLC, as assignor, and BP/CGCenter II LLC, as assignee. * 99.6 Assignment and Assumption of Contract of Sale, dated as of April 25, 2001, by and among Dai-Ichi Life Investment Properties, Inc., as assignor, and BP/CGCenter II LLC, as assignee, and Citibank, N.A., as seller. * 99.7 Amended and Restated Operating Agreement of BP/CGCenter Acquisition Co. LLC, a Delaware limited liability company. * _______________________________ *Previously filed.

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: July 9, 2001 BOSTON PROPERTIES, INC. By: /s/ Douglas T. Linde -------------------- Douglas T. Linde Chief Financial Officer

Report of Independent Accountants The Board of Directors and Stockholders of Boston Properties, Inc.: We have audited the accompanying combined statement of revenue over certain operating expenses (the "Statement") of Citigroup Center in New York City (the "Property"), for the year ended December 31, 2000. This Statement is the responsibility of the Property's management. Our responsibility is to express an opinion on this Statement based on our audit. We conducted our audit in accordance with auditing standards generally accepted in the United States of America. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the Statement is free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the Statement. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall Statement presentation. We believe that our audit provides a reasonable basis for our opinion. The accompanying Statement was prepared to comply with the requirements of Rule 3-14 of Regulation S-X of the Securities and Exchange Commission, and excludes certain expenses described in Note 2, and therefore is not intended to be a complete presentation of the Property's revenue and expenses. In our opinion, the Statement referred to above presents fairly, in all material respects, the revenue over certain operating expenses (as described in Note 2), of the Property for the year ended December 31, 2000, in conformity with accounting principles generally accepted in the United States of America. /s/ PricewaterhouseCoopers LLP June 19, 2001

For the For the year ended three months ended December 31, 2000 March 31, 2001 ----------------------- ------------------------ (Unaudited) Revenue (Note 2): Base rent $ 54,695 $ 14,242 Recoveries from tenants 2,872 549 Other income 523 193 ----------------------- ------------------------ 58,090 14,984 ----------------------- ------------------------ Certain operating expenses (Note 2): Repairs and maintenance 5,495 1,378 Janitorial and cleaning 4,009 1,192 Security 878 216 Utilities 3,685 1,308 General and administrative 998 282 Insurance 256 72 Real estate taxes 13,522 3,320 ----------------------- ------------------------ 28,843 7,768 ----------------------- ------------------------ Excess of revenue over certain operating expenses $ 29,247 $ 7,216 ======================= ======================== The accompanying notes are an integral part of the Statement.

CITIGROUP CENTER NOTES TO COMBINED STATEMENT OF REVENUE OVER CERTAIN OPERATING EXPENSES (dollars in thousands) 1. Description of the Property The accompanying combined statement of revenue over certain operating expenses (the "Statement") includes the operations of a 59-story approximately 1.6 million square foot Class A office tower known as Citigroup Center (the "Property"), which was operated as two separate condominium units, located in New York City, New York. On April 25, 2001, the Property was acquired from an unrelated third party through a venture between affiliates of Boston Properties, Inc. (the "Company") and a private real estate investment company. Citibank occupied approximately 526,000 square feet of space at the Property of which approximately 425,000 square feet was owner-occupied in condominium unit two. 2. Basis of Accounting The accompanying Statement has been prepared on the accrual basis of accounting. The Statement has been prepared in accordance with Rule 3-14 of Regulation S-X of the Securities and Exchange Commission for real estate properties acquired or to be acquired. Accordingly, this Statement excludes revenue attributable to the Citibank owner-occupied space in condominium unit two and certain historical expenses not comparable to the operations of the Property after acquisition such as amortization, depreciation, interest, certain owner occupant expenses, corporate expenses and certain other costs not directly related to the future operations of the Property. 3. Significant Accounting Policies Rental Revenue Rental revenue is recognized on a straight-line basis over the terms of the related leases. The excess of recognized rentals over amounts due pursuant to lease terms is recorded as accrued rent. The impact of the straight-line rent adjustment decreased revenue by approximately $118 and increased revenue by approximately $17 for the year ended December 31, 2000 and for the three months ended March 31, 2001 (unaudited), respectively. Unaudited Interim Information The Statement for the three months ended March 31, 2001 is unaudited. In the opinion of management, all adjustments necessary for a fair presentation of such Statement have been included. The results of operations for the period are not necessarily indicative of the Property's future results of operations. Risks and Uncertainties The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. 4. Description of Leasing Arrangements The office and retail space is leased to tenants under leases with terms that vary in length. Certain leases contain reimbursement clauses and renewal options. Minimum lease payments due under noncancelable operating leases in effect as of April 25, 2001 (unaudited), for the remainder of 2001 and annually thereafter are as follows: Amount (1) (in thousands) ------------------ 2001 (4/26/01 - 12/31/01) $ 62,145 2002 84,391 2003 84,955

CITIGROUP CENTER NOTES TO COMBINED STATEMENT OF REVENUE OVER CERTAIN OPERATING EXPENSES (dollars in thousands) 2004 84,324 2005 78,452 Thereafter 472,650 (1) Includes the addition of minimum lease payments that Citibank will owe under terms of the lease agreement signed concurrent with the Company's acquisition of the Property. As of April 26, 2001, Citibank occupied approximately 34% of the leasable square feet of the Property.

BOSTON PROPERTIES, INC. PRO FORMA CONSOLIDATED BALANCE SHEET NOTES TO THE PRO FORMA CONSOLIDATED BALANCE SHEET March 31, 2001 (Unaudited) The accompanying unaudited Pro Forma Consolidated Balance Sheet of Boston Properties, Inc. (the "Company") is presented as if the acquisition of Citigroup Center, subsequent to March 31, 2001, had been consummated on March 31, 2001. This Pro Forma Consolidated financial information should be read in conjunction with Form 10-Q for the three months ended March 31, 2001 (unaudited). The following Pro Forma Consolidated Balance Sheet is not necessarily indicative of what the actual financial position would have been assuming the above transaction had been consummated on March 31, 2001 nor does it purport to represent the future financial position of the Company.

BOSTON PROPERTIES, INC. PRO FORMA CONSOLIDATED BALANCE SHEET March 31, 2001 (unaudited) (dollars in thousands) March 31, Citigroup Pro 2001 Center Forma ---------------- ----------------- ----------------- ASSETS Real estate: $ 6,284,655 $ 733,777 (A) $ 7,018,432 Less: accumulated depreciation (616,620) - (616,620) ---------------- ----------------- ----------------- Total real estate 5,668,035 733,777 6,401,812 Cash and cash equivalents 241,819 (187,859) (B) 53,960 Escrows 29,861 - 29,861 Investments in securities 6,060 - 6,060 Tenant and other receivables 24,443 - 24,443 Accrued rental income 97,657 - 97,657 Deferred charges, net 76,209 17,773 (C) 93,982 Prepaid expenses and other assets 73,539 - 73,539 Investments in unconsolidated joint ventures 92,456 - 92,456 ---------------- ----------------- ----------------- Total assets $ 6,310,079 $ 563,691 $ 6,873,770 ================ ================= ================= LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities: Mortgage notes and bonds payable $ 3,450,347 $ 525,000 (D) $ 3,975,347 Accounts payable and accrued expenses 58,542 - 58,542 Dividends and distributions payable 71,917 - 71,917 Interest rate contracts 19,774 - 19,774 Accrued interest payable 8,127 - 8,127 Other liabilities 56,943 - 56,943 ---------------- ----------------- ----------------- Total liabilities 3,665,650 525,000 4,190,650 ---------------- ----------------- ----------------- Minority interest: ---------------- ----------------- ----------------- Operating Partnership 821,575 - 821,575 ---------------- ----------------- ----------------- Property partnership - 38,691 (E) 38,691 ---------------- ----------------- ----------------- Series A Convertible Redeemable Preferred Stock, liquidation preference $50.00 per share, 2,000,000 shares issued and outstanding 100,000 - 100,000 ---------------- ----------------- ----------------- Stockholders' equity: Excess stock, $.01 par value, 150,000,000 shares authorized, none issued or outstanding - - - Common stock, $.01 par value, 250,000,000 shares authorized, 89,701,122 issued and outstanding 897 - 897 Additional paid-in capital 1,759,714 - 1,759,714 Dividends in excess of earnings (15,829) - (15,829) Unearned compensation (2,531) - (2,531) Accumulated other comprehensive loss (19,397) - (19,397) ---------------- ----------------- ----------------- Total stockholders' equity 1,722,854 - 1,722,854 ---------------- ----------------- ----------------- Total liabilities and stockholders' equity $ 6,310,079 $ 563,691 $ 6,873,770 ================ ================= =================

BOSTON PROPERTIES, INC. NOTES TO THE PRO FORMA CONSOLIDATED BALANCE SHEET (dollars in thousands) (A) Represents the acquisition price, including closing costs, of Citigroup Center, which has been consolidated as the Company exercises control over the property partnership. (B) Represents the net cash paid in connection with the acquisition of Citigroup Center. (C) Represents costs incurred in connection with new mortgage financing related to the acquisition of Citigroup Center. (D) Represents new mortgage financing related to the acquisition of Citigroup Center. The new mortgage financing totals $525 million and bears interest at a fixed rate of 7.1855%. The mortgage note requires monthly principal and interest payments totaling approximately $3.6 million and matures on May 11, 2011. (E) Represents the minority owner's equity interest in the Citigroup Center venture.

BOSTON PROPERTIES, INC. PRO FORMA CONSOLIDATED STATEMENTS OF OPERATIONS For the three months ended March 31, 2001 and the year ended December 31, 2000 (Unaudited) The accompanying unaudited Pro Forma Consolidated Statements of Operations for the three months ended March 31, 2001 and for the year ended December 31, 2000 are presented as if the acquisition of Citigroup Center and related mortgage financing and the consummation of the October 31, 2000 follow-on offering of 17,110,000 shares of common stock had occurred on January 1, 2000. These Pro Forma Consolidated Statements of Operations should be read in conjunction with the historical consolidated financial statements and notes thereto of the Company, reported on Form 10-K for the year ended December 31, 2000 and on Form 10-Q for the three months ended March 31, 2001. The unaudited Pro Forma Consolidated financial information prepared by Boston Properties' management is not necessarily indicative of what the actual results of operations would have been for the three months ended March 31, 2001 or for the year ended December 31, 2000, had the previously described transactions actually occurred on January 1, 2000 and the effect thereof carried forward through the three month period ended March 31, 2001, nor do they purport to present the future results of operations of the Company.

BOSTON PROPERTIES, INC. PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS FOR THE THREE MONTHS ENDED MARCH 31, 2001 (unaudited) (dollars in thousands, except for per share amounts) Three months ended March 31, Citigroup Pro 2001 Center Forma ------------------ -------------- --------------- Revenue Rental: Base rent $ 185,691 $21,822 (A) $ 207,513 Recoveries from tenants 26,178 549 26,727 Parking and other 13,746 193 13,939 ------------------ -------------- --------------- Total rental revenue 225,615 22,564 248,179 Development and management services 3,397 - 3,397 Interest and other 4,444 (1,879) (B) 2,565 ------------------ -------------- --------------- Total revenue 233,456 20,685 254,141 ------------------ -------------- --------------- Expenses Operating 70,343 7,768 78,111 General and administrative 9,950 - 9,950 Interest 47,853 9,331 (C) 57,184 Depreciation and amortization 34,740 4,124 (D) 38,864 ------------------ -------------- --------------- Total expenses 162,886 21,223 184,109 ------------------ -------------- --------------- Income before net derivative losses, minority interests and income from unconsolidated joint ventures 70,570 (538) 70,032 Net derivative losses (3,055) - (3,055) Minority interest in property partnerships (255) 1,219 (E) 964 Income from unconsolidated joint ventures 1,127 - 1,127 ------------------ -------------- --------------- Income before minority interest in Operating Partnership 68,387 681 69,068 Minority interest in Operating Partnership (19,024) (134) (F) (19,158) ------------------ -------------- --------------- Income before gain on sale of real estate and cumulative effect of a change in accounting principle 49,363 547 49,910 Gain on sale of real estate, net of minority interest 4,654 - 4,654 ------------------ -------------- --------------- Income before preferred dividend and cumulative effect of a change in accounting principle 54,017 547 54,564 Preferred dividend (1,643) - (1,643) ------------------ -------------- --------------- Income before cumulative effect of a change in accounting principle $ 52,374 $ 547 $ 52,921 ================== ============== =============== Basic earnings per share: ------------------ --------------- Income before cumulative effect of a change in accounting principle $ 0.59 $ 0.60 ================== =============== Weighted average number of common shares outstanding 88,688 88,688 ================== =============== Diluted earnings per share: ------------------ --------------- Income before cumulative effect of a change in accounting principle $ 0.57 $ 0.58 ================== =============== Weighted average number of common and common equivalent shares outstanding 91,171 91,171 ================= ===============

BOSTON PROPERTIES, INC. PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS FOR THE YEAR ENDED DECEMBER 31, 2000 (unaudited) (dollars in thousands, except for per share amounts) Year ended December 31, Citigroup Pro 2000 Center Forma ------------------- -------------- --------------- Revenue Rental: Base rent $ 715,358 $85,203 (A) $ 800,561 Recoveries from tenants 92,692 2,872 95,564 Parking and other 50,892 523 51,415 ------------------ ------------- -------------- Total rental revenue 858,942 88,598 947,540 Development and management services 11,837 - 11,837 Interest and other 8,574 (7,514) (B) 1,060 ------------------ ------------- -------------- Total revenue 879,353 81,084 960,437 ------------------ ------------- -------------- Expenses Operating 264,701 28,843 293,544 General and administrative 35,659 - 35,659 Interest 217,064 37,557 (C) 254,621 Depreciation and amortization 133,150 16,497 (D) 149,647 ------------------ ------------- -------------- Total expenses 650,574 82,897 733,471 ------------------ ------------- -------------- Income before minority interests and income from unconsolidated joint ventures 228,779 (1,813) 226,966 Minority interest in property partnerships (932) 4,761 (E) 3,829 Income from unconsolidated joint ventures 1,758 - 1,758 ------------------ ------------- -------------- Income before minority interest in Operating Partnership 229,605 2,948 232,553 Minority interest in Operating Partnership (76,039) 5,774 (F) (70,265) ------------------ ------------- -------------- Income before loss on sale of real estate and extraordinary items 153,566 8,722 162,288 Loss on sale of real estate, net of minority interest (234) - (234) ------------------ ------------- -------------- Income before preferred dividend and extraordinary items 153,332 8,722 162,054 Preferred dividend (6,572) - (6,572) ------------------ ------------- -------------- Income before extraordinary items $ 146,760 $ 8,722 $ 155,482 ================== ============= ============== Basic earnings per share: ------------------ -------------- Income before extraordinary items $ 2.05 $ 1.82 ================== ============== Weighted average number of common shares outstanding 71,424 85,639 (G) ================== ============== Diluted earnings per share: ------------------ -------------- Income before extraordinary items $ 2.01 $ 1.79 ================== ============== Weighted average number of common and common equivalent shares outstanding 72,741 86,956 (G) ================== ==============

BOSTON PROPERTIES, INC. NOTES TO THE PRO FORMA CONSOLIDATED STATEMENTS OF OPERATIONS (dollars in thousands) The Pro Forma Consolidated Statement of Operations reflects the historical results of operations as reflected in the Combined Statement of Revenue Over Certain Operating Expenses (the "Statement") of Citigroup Center, as adjusted for base rent, interest expense and depreciation and amortization for the year ended December 31, 2000 and the three months ended March 31, 2001 (unaudited). (A) Base Rent includes adjustments based on the pro forma acquisition date of January 1, 2000 as follows: Three months Year ended ended March 31, December 31, 2001 2000 Base Rent per the Statement $ 14,242 $ 54,695 Pro Forma Base Rent Adjustment (1) 7,580 30,508 ----------------- ---------------- Pro Forma Base Rent $ 21,822 $ 85,203 ----------------- ---------------- (1) Includes an adjustment to base rent to reflect rental income attributed to Citibank's occupied space in the pro forma periods (the straight-line rent adjustment is based on the lease terms entered into by Citibank with the Company at the acquisition date of Citigroup Center) and also includes an adjustment to straight-line rent for pro forma purposes. (B) Reflects the reduction in interest income attributable to the cash used to acquire Citigroup Center based on an estimated interest rate of 4%. (C) Reflects the increase in interest expense as a result of the new mortgage financing obtained for the acquisition of Citigroup Center. The new mortgage financing totaling $525 million bears interest at a fixed rate of 7.1855% and matures on May 11, 2011. (D) Reflects the pro forma depreciation and amortization expense for Citigroup Center. Depreciation is based on a preliminary allocation to land and building and is subject to change as additional information is obtained. Depreciation expense is computed over an estimated useful life of 40 years for the building. Deferred financing costs are amortized on a straight-line basis over the term of the related mortgage financing. (E) Reflects the minority interest owner's share of pro forma income from Citigroup Center which is reflective of the Company's preferential return on and of its capital. (F) Reflects an adjustment for the minority interest in the Operating Partnership's share of pro forma income before gain on sale of real estate and extraordinary items. (G) Reflects the pro forma weighted average shares outstanding assuming that the October, 2000 follow-on offering of 17,110,000 shares of Common Stock were issued on January 1, 2000.

Exhibit 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We consent to the incorporation by reference in the registration statements of Boston Properties, Inc. on Forms S-3 (File Numbers, 333-36142, 333-39114, 333-40618, 333-51024, 333-58694, 333-60219, 333-61799, 333-68379, 333-69375, 333-70765, 333-80513, 333-81355, 333-83859, 333-83861, 333-83863, 333-83867, 333-83869, 333-86585, and 333-91425) and on Forms S-8 (File Numbers 333-52845, 333-54550 and 333-70321) of our report dated June 19, 2001 with respect to the Combined Statement of Revenue Over Certain Operating Expenses of Citigroup Center for the year ended December 31, 2000, which report is included in this Form 8-K/A of Boston Properties, Inc., dated as of July 9, 2001. /s/ PricewaterhouseCoopers LLP Boston, Massachusetts July 9, 2001