UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 10-Q

Commission file number 1-13274

Mack-Cali Realty Corporation
(Exact name of registrant as specified in its charter)

        Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding twelve (12) months (or such shorter period that the Registrant was required to file such report) Yes ý    No o and (2) has been subject to such filing requirements for the past ninety (90) days Yes ý    No o.

APPLICABLE ONLY TO CORPORATE ISSUERS:

As of October 31, 2002, there were 57,543,518 shares of $0.01 par value common stock outstanding.

MACK-CALI REALTY CORPORATION

FORM 10-Q

INDEX

2

MACK-CALI REALTY CORPORATION

Part I—Financial Information

Item I. Financial Statements

        The accompanying unaudited consolidated balance sheets, statements of operations, of changes in stockholders' equity, and of cash flows and related notes, have been prepared in accordance with generally accepted accounting principles ("GAAP") for interim financial information and in conjunction with the rules and regulations of the Securities and Exchange Commission ("SEC"). Accordingly, they do not include all of the disclosures required by GAAP for complete financial statements. The financial statements reflect all adjustments consisting only of normal, recurring adjustments, which are in the opinion of management, necessary for a fair presentation for the interim periods.

        The aforementioned financial statements should be read in conjunction with the notes to the aforementioned financial statements and Management's Discussion and Analysis of Financial Condition and Results of Operations and the financial statements and notes thereto included in Mack-Cali Realty Corporation's Annual Report on Form 10-K for the fiscal year ended December 31, 2001.

        The results of operations for the three and nine month periods ended September 30, 2002 are not necessarily indicative of the results to be expected for the entire fiscal year or any other period.

3

MACK-CALI REALTY CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in thousands, except per share amounts)

The accompanying notes are an integral part of these consolidated financial statements.

4

MACK-CALI REALTY CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share amounts)
(unaudited)

The accompanying notes are an integral part of these consolidated financial statements.

5

MACK-CALI REALTY CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY

For the Nine Months Ended September 30, 2002

(in thousands)
(unaudited)

The accompanying notes are integral part of these consolidated financial statements.

6

MACK-CALI REALTY CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)
(unaudited)

The accompanying notes are an integral part of these consolidated financial statements

7

MACK-CALI REALTY CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(dollars in thousands, except per share/unit amounts)

1.    ORGANIZATION AND BASIS OF PRESENTATION

ORGANIZATION

        Mack-Cali Realty Corporation, a Maryland corporation, together with its subsidiaries (the "Company"), is a fully-integrated, self-administered, self-managed real estate investment trust ("REIT") providing leasing, management, acquisition, development, construction and tenant-related services for its properties. As of September 30, 2002, the Company owned or had interests in 262 properties plus developable land (collectively, the "Properties"). The Properties aggregate approximately 29.0 million square feet, which are comprised of 153 office buildings and 96 office/flex buildings, totaling approximately 28.5 million square feet (which include six office buildings and one office/flex building aggregating 2.1 million square feet, owned by unconsolidated joint ventures in which the Company has investment interests), six industrial/warehouse buildings totaling approximately 387,400 square feet, three stand-alone retail properties totaling approximately 118,040 square feet (which includes one retail property totaling approximately 100,740 square feet, owned by an unconsolidated joint venture in which the Company has an investment interest), one hotel (which is owned by an unconsolidated joint venture in which the Company has an investment interest) and three land leases. The Properties are located in nine states, primarily in the Northeast, plus the District of Columbia.

BASIS OF PRESENTATION

        The accompanying consolidated financial statements include all accounts of the Company, its majority-owned and/or controlled subsidiaries, which consist principally of Mack-Cali Realty, L.P. ("Operating Partnership"). See Investments in Unconsolidated Joint Ventures in Note 2 for the Company's treatment of unconsolidated joint venture interests. All significant intercompany accounts and transactions have been eliminated.

        The preparation of financial statements in conformity with generally accepted accounting principles ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

2.    SIGNIFICANT ACCOUNTING POLICIES

Rental Property

        Rental properties are stated at cost less accumulated depreciation and amortization. Costs directly related to the acquisition, development and construction of rental properties are capitalized. Capitalized development and construction costs include pre-construction costs essential to the development of the property, development and construction costs, interest, property taxes, insurance, salaries and other project costs incurred during the period of development. Included in total rental property is construction and development in-progress of $189,702 and $210,463 (including land of $48,804 and $54,169) as of September 30, 2002 and December 31, 2001, respectively. Ordinary repairs and maintenance are expensed as incurred; major replacements and betterments, which improve or extend the life of the asset, are capitalized and depreciated over their estimated useful lives. Fully-depreciated assets are removed from the accounts.

8

        The Company considers a construction project as substantially completed and held available for occupancy upon the completion of tenant improvements, but no later than one year from cessation of major construction activity (as distinguished from activities such as routine maintenance and cleanup). If portions of a rental project are substantially completed and occupied by tenants, or held available for occupancy, and other portions have not yet reached that stage, the substantially completed portions are accounted for as a separate project. The Company allocates costs incurred between the portions under construction and the portions substantially completed and held available for occupancy.

        Properties are depreciated using the straight-line method over the estimated useful lives of the assets. The estimated useful lives are as follows:

        On a periodic basis, management assesses whether there are any indicators that the value of the rental properties may be impaired. A property's value is impaired only if management's estimate of the aggregate future cash flows (undiscounted and without interest charges) to be generated by the property are less than the carrying value of the property. To the extent impairment has occurred, the loss shall be measured as the excess of the carrying amount of the property over the fair value of the property. Management does not believe that the value of any of the Company's rental properties is impaired.

Rental Property Held for Sale

        When assets are identified by management as held for sale, the Company discontinues depreciating the assets and estimates the sales price, net of selling costs, of such assets. If, in management's opinion, the net sales price of the assets which have been identified for sale is less than the net book value of the assets, a valuation allowance is established. See Note 6.

        If circumstances arise that previously were considered unlikely and, as a result, the Company decides not to sell a property previously classified as held for sale, the property is reclassified as held and used. A property that is reclassified is measured and recorded individually at the lower of (a) its carrying amount before the property was classified as held for sale, adjusted for any depreciation (amortization) expense that would have been recognized had the property been continuously classified as held and used, or (b) the fair value at the date of the subsequent decision not to sell. See Note 6.

        Effective January 1, 2002, the Company adopted the provisions of Statement of Financial Accounting Standards ("SFAS") No. 144, Accounting for the Impairment or Disposal of Long-Lived Assets, which supercedes SFAS No. 121. SFAS No. 144 requires that long-lived assets that are to be disposed of by sale be measured at the lower of book value or fair value less cost to sell. SFAS No. 144 retains the requirements of SFAS No. 121 regarding impairment loss recognition and measurement. In addition, it requires that one accounting model be used for long-lived assets to be disposed of by sale and broadens the presentation of discontinued operations to include more disposal transactions. As the statement requires implementation on a prospective basis, properties which were identified as held for sale by the Company prior to January 1, 2002 are presented in the accompanying financial statements in a manner consistent with the prior year's presentation. As there were no additional properties identified as held for sale in the nine months ended September 30, 2002, the Company did not report any discontinued operations for the periods presented.

9

Investments in Unconsolidated Joint Ventures

        The Company accounts for its investments in unconsolidated joint ventures under the equity method of accounting as the Company exercises significant influence, but does not control these entities. These investments are recorded initially at cost, as Investments in Unconsolidated Joint Ventures, and subsequently adjusted for equity in earnings and cash contributions and distributions. See Note 4.

Cash and Cash Equivalents

        All highly liquid investments with a maturity of three months or less when purchased are considered to be cash equivalents.

Deferred Financing Costs

        Costs incurred in obtaining financing are capitalized and amortized on a straight-line basis, which approximates the effective interest method, over the term of the related indebtedness. Amortization of such costs is included in interest expense and was $1,176 and $1,180 for the three months ended September 30, 2002 and 2001, respectively, and $3,529 and $3,462 for the nine months ended September 30, 2002 and 2001, respectively.

Deferred Leasing Costs

        Costs incurred in connection with leases are capitalized and amortized on a straight-line basis over the terms of the related leases and included in depreciation and amortization. Unamortized deferred leasing costs are charged to amortization expense upon early termination of the lease. Certain employees of the Company are compensated for providing leasing services to the Properties. The portion of such compensation, which is capitalized and amortized, approximated $908 and $899 for the three months ended September 30, 2002 and 2001, respectively, and $2,604 and $2,501 for the nine months ended September 30, 2002 and 2001, respectively.

Restricted Cash

        Restricted cash includes tenant security deposits and escrow and reserve funds for debt service, real estate taxes, property insurance, capital improvements, tenant improvements, and leasing costs established pursuant to certain mortgage financing arrangements.

Derivative Instruments

        The Company measures its derivative instruments, including certain derivative instruments embedded in other contracts, at fair value and records them as an asset or liability, depending on the Company's rights or obligations under the applicable derivative contract. For derivatives designated as fair value hedges, the changes in the fair value of both the derivative instrument and the hedged item are recorded in earnings. For derivatives designated as cash flow hedges, the effective portions of changes in fair value of the derivative are reported in other comprehensive income ("OCI") and are subsequently reclassified into earnings when the hedged item affects earnings. Changes in fair value of derivative instruments not designated as hedging and ineffective portions of hedges are recognized in earnings in the affected period. See Note 9—Interest Rate Hedge.

Revenue Recognition

        Base rental revenue is recognized on a straight-line basis over the terms of the respective leases. Unbilled rents receivable represents the amount by which straight-line rental revenue exceeds rents currently billed in accordance with the lease agreements. Parking and other revenue includes income from parking spaces leased to tenants, income from tenants for additional services provided by the

10

Company, income from tenants for early lease terminations and income from managing and/or leasing properties for third parties.

        Reimbursements are received from tenants for certain costs as provided in the lease agreements. These costs generally include real estate taxes, utilities, insurance, common area maintenance and other recoverable costs. See Note 12.

Income and Other Taxes

        The Company has elected to be taxed as a REIT under Sections 856 through 860 of the Internal Revenue Code of 1986, as amended (the "Code"). As a REIT, the Company generally will not be subject to corporate federal income tax on net income that it currently distributes to its shareholders, provided that the Company satisfies certain organizational and operational requirements including the requirement to distribute at least 90 percent of its REIT taxable income to its shareholders. The Company may elect to treat one or more of its corporate subsidiaries as a taxable REIT subsidiary ("TRS"). In general, a TRS of the Company may perform additional services for tenants of the Company and generally may engage in any real estate or non-real estate related business (except for the operation or management of health care facilities or lodging facilities or the providing to any person, under a franchise, license or otherwise, rights to any brand name under which any lodging facility or health care facility is operated). A TRS is subject to corporate federal income tax. The Company has elected to treat certain of its existing and newly created corporate subsidiaries as a TRS. If the Company fails to qualify as a REIT in any taxable year, the Company will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates. The Company is subject to certain state and local taxes.

Earnings Per Share

        The Company presents both basic and diluted earnings per share ("EPS"). Basic EPS excludes dilution and is computed by dividing net income available to common stockholders by the weighted average number of shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock, where such exercise or conversion would result in a lower EPS amount.

Dividends and Distributions Payable

        The dividends and distributions payable at September 30, 2002 represents dividends payable to shareholders of record as of October 3, 2002 (57,670,218 shares), distributions payable to minority interest common unitholders (7,814,806 common units) on that same date and preferred distributions payable to preferred unitholders (215,894 preferred units) for the third quarter 2002. The third quarter 2002 dividends and common unit distributions of $0.63 per share and per common unit, as well as the third quarter preferred unit distribution of $18.1818 per preferred unit, were approved by the Board of Directors on September 25, 2002 and paid on October 21, 2002.

        The dividends and distributions payable at December 31, 2001 represents dividends payable to shareholders of record as of January 4, 2002 (56,765,840 shares), distributions payable to minority interest common unitholders (7,954,775 common units) on that same date and preferred distributions payable to preferred unitholders (220,340 preferred units) for the fourth quarter 2001. The fourth quarter 2001 dividends and common unit distributions of $0.62 per share and per common unit, as well as the fourth quarter preferred unit distribution of $17.8932 per preferred unit, were approved by the Board of Directors on December 18, 2001 and paid on January 22, 2002.

Stock Options

        The Company accounts for stock-based compensation using the intrinsic value method prescribed in Accounting Principles Board Opinion No. 25, "Accounting for Stock Issued to Employees," and

11

related Interpretations ("APB No. 25"). Under APB No. 25, compensation cost is measured as the excess, if any, of the quoted market price of the Company's stock at the date of grant over the exercise price of the option granted. Compensation cost for stock options, if any, is recognized ratably over the vesting period. The Company's policy is to grant options with an exercise price equal to the quoted closing market price of the Company's stock on the business day preceding the grant date. Accordingly, no compensation cost has been recognized under the Company's stock option plans for the granting of stock options. See Note 13.

Reclassifications

        Certain reclassifications have been made to prior period amounts in order to conform with current period presentation.

3.    REAL ESTATE PROPERTY TRANSACTIONS

Property Acquisitions

        The Company acquired the following properties during the nine months ended September 30, 2002:

(a)

On August 9, 2002, the Company acquired an undivided 68.1 percent interest (75,668 square feet) in 3 Skyline Drive, a 113,098 square-foot office property. The property was acquired as tenants-in-common interests with the intention that, soon after the completion of the acquisition, the individual interests would be transferred into separate condominium units. On September 27, 2002, the Company executed a condominium agreement to formalize the transfer of its undivided interest in the property into a condominium interest. The Company has accounted for its interest in the property as if the condominium was in place since the date of acquisition.

        On November 1, 2002, the Company acquired 1633 Littleton Road, a 57,722 square-foot office building located in Parsippany, Morris County, New Jersey for approximately $11,350.

Land Acquisitions

        On June 12, 2002, the Company acquired three land parcels located in Hawthorne and Yonkers, Westchester County, New York in one transaction for a total cost of approximately $2,600. The land was acquired from an entity whose principals include Timothy M. Jones, Robert F. Weinberg and Martin S. Berger, each of whom are affiliated with the Company as the President of the Company, a current member of the Board of Directors and a former member of the Board of Directors of the Company, respectively. In connection with the Company's acquisition of 65 Class A properties from The Robert Martin Company ("Robert Martin") in January 1997, as subsequently modified, the Company granted Robert Martin the right to designate one seat on the Company's Board of Directors ("RM Board Seat"). Robert Martin designated Martin S. Berger and Robert F. Weinberg to jointly share the RM Board Seat, as follows: Mr. Weinberg served as a member of the Board of Directors of the Company from 1997 until December 1, 1998, at which time Mr. Weinberg resigned and Mr. Berger was appointed to serve in such capacity. Mr. Berger served as a member of the Board of Directors of the Company from December 1, 1998 until March 6, 2001, at which time Mr. Berger resigned and Mr. Weinberg was appointed to serve in such capacity until the Company's 2003 annual meeting of stockholders. If the Company elects to nominate for re-election to its Board of Directors a designee of Robert Martin at the Company's 2003 annual meeting of stockholders, then Mr. Berger and

12

Mr. Weinberg have agreed that Mr. Berger will be so nominated and the seat will be rotated among Mr. Berger and Mr. Weinberg every 12 months commencing on the 12 month anniversary of the 2003 annual meeting of stockholders. Upon the death of Mr. Berger or Mr. Weinberg, the surviving person shall solely fill the remainder of the term of the RM Board Seat.

Properties Commencing Initial Operations

        The following properties commenced their initial operations during the nine months ended September 30, 2002:

(a)

Amount consists of $168,256 included in rental property and $18,965 of leasing commissions and other deferred leasing costs, which are included in deferred charges and other assets.

(b)

Amount consists of $4,724 included in rental property and $254 of leasing commissions, which is included in deferred charges and other assets.

Property Sales

        The Company sold the following properties during the nine months ended September 30, 2002:

(a)

On May 13, 2002, the Company sold 3100 Monticello, 2300 Valley View, 150 West Parkway and 555 Republic Place in a single transaction with one buyer, Brookview Properties, L.P., an entity that includes a partner, whose principals include Paul A. Nussbaum, a former member of the Board of Directors of the Company. The Company provided the purchaser with a $5,000 subordinated loan that bears interest at 15 percent with a current pay rate of 11 percent. The entire principal of the loan is payable at maturity on October 12, 2007. In conjunction with the Purchaser's subsequent sale of one of its acquired properties, the purchaser repaid $1,537 of the loan principal through September 30, 2002.

(b)

On June 6, 2002, the Company sold 1717 St. James Place, 5300 Memorial Drive and 10497 Town & Country Way in a single transaction with one buyer, Parkway Properties LP.

        On October 16, 2002, the Company sold its remaining three office properties located in Arizona, aggregating 416,967 square feet, for approximately $43,000 in a single transaction with one buyer, Summit Commercial Properties, Inc., a division of Highridge Partners.

13

4.    INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES

        The debt of the Company's unconsolidated joint ventures aggregating $529,391 as of September 30, 2002 are non-recourse to the Company, except for customary exceptions pertaining to such matters as intentional misuse of funds, environmental conditions and material misrepresentations, and except as otherwise indicated below.

PRU-BETA 3 (Nine Campus Drive)

        On March 27, 1998, the Company acquired a 50 percent interest in an existing joint venture with The Prudential Insurance Company of America ("Prudential"), known as Pru-Beta 3, which owned and operated Nine Campus Drive, a 156,495 square-foot office building, located in the Mack-Cali Business Campus office complex in Parsippany, Morris County, New Jersey. On November 5, 2001, the Company acquired the remaining interest in the property for approximately $15,073. The property has been consolidated in the Company's financial statements subsequent to the acquisition of the remaining interest. The Company performed management and leasing services for the property when it was owned by the joint venture and recognized $37 and $143 in fees for such services for the three and nine months ended September 30, 2001, respectively.

HPMC

        On April 23, 1998, the Company entered into a joint venture agreement with HCG Development, L.L.C. and Summit Partners I, L.L.C. to form HPMC Development Partners, L.P. and, on July 21, 1998, entered into a second joint venture, HPMC Development Partners II, L.P. (formerly known as HPMC Lava Ridge Partners, L.P.), with these same parties. HPMC Development Partners, L.P.'s efforts have focused on two development projects, commonly referred to as Continental Grand II and Summit Ridge. HPMC Development Partners II, L.P.'s efforts have focused on three development projects, commonly referred to as Lava Ridge, Pacific Plaza I & II and Stadium Gateway. Among other things, the partnership agreements provide for a preferred return on the Company's invested capital in each venture, in addition to 50 percent of such venture's profit above the preferred returns, as defined in each agreement.

Continental Grand II

        Continental Grand II is a 239,085 square-foot office building located in El Segundo, Los Angeles County, California, which was constructed and placed in service by the venture. On June 29, 2001, the venture sold the office property for approximately $67,000.

Summit Ridge

        Summit Ridge is an office complex of three one-story buildings, aggregating 133,841 square feet, located in San Diego, San Diego County, California, which was constructed and placed in service by the venture. On January 29, 2001, the venture sold the office complex for approximately $17,450.

Lava Ridge

        Lava Ridge is an office complex of three two-story buildings, aggregating 183,200 square feet, located in Roseville, Placer County, California, which was constructed and placed in service by the venture. On May 30, 2002, the venture sold the office complex for approximately $31,700.

Pacific Plaza I & II

        Pacific Plaza I & II is a two-phase development joint venture project, located in Daly City, San Mateo County, California between the Company, HPMC Development Partners II, L.P. and a third-party entity.

14

Phase I of the project, which commenced initial operations in August 2001, consists of a nine-story office building, aggregating 369,682 square feet. Phase II, which is currently under construction, will comprise a three-story retail and theater complex. The theater portion of Phase II commenced initial operations in June 2002, with certain of the retail space commencing operations in August 2002. The Company performs management services for these properties owned by the joint venture and recognized $91, $213, $7 and $7 in fees for such services in the three and nine months ended September 30, 2002 and 2001, respectively.

Stadium Gateway

        Stadium Gateway is a development joint venture project located in Anaheim, Orange County, California between the Company, HPMC Development Partners II, L.P. and a third-party entity. The venture has constructed a six-story, 261,554 square-foot office building, which commenced initial operations in January 2002.

G&G MARTCO (Convention Plaza)

        On April 30, 1998, the Company acquired a 49.9 percent interest in an existing joint venture, G&G Martco, which owns Convention Plaza, a 305,618 square-foot office building, located in San Francisco, San Francisco County, California. A portion of the Company's initial investment was financed through the issuance of common units, as well as funds drawn from the Company's credit facilities. On June 4, 1999, the Company acquired an additional 0.1 percent interest in G&G Martco through the issuance of common units. The Company performs management and leasing services for the property owned by the joint venture and recognized $61, $188, $62 and $172 in fees for such services for the three and nine months ended September 30, 2002 and 2001, respectively.

AMERICAN FINANCIAL EXCHANGE L.L.C.

        On May 20, 1998, the Company entered into a joint venture agreement with Columbia Development Company, L.L.C. to form American Financial Exchange L.L.C. The venture was formed to acquire land for future development, located on the Hudson River waterfront in Jersey City, Hudson County, New Jersey, adjacent to the Company's Harborside Financial Center office complex. The Company holds a 50 percent interest in the joint venture. Among other things, the partnership agreement provides for a preferred return on the Company's invested capital in the venture, in addition to the Company's proportionate share of the venture's profit, as defined in the agreement. The joint venture acquired land on which it constructed a parking facility, a portion of which is currently licensed to a parking operator. Such parking facility serves a ferry service between the Company's Harborside property and Manhattan. In the fourth quarter 2000, the joint venture started construction of Plaza 10, a 575,000 square-foot office building, on certain of the land owned by the venture. Plaza 10 is 100 percent pre-leased to Charles Schwab & Co. Inc. ("Schwab") for a 15-year term. The lease agreement obligates the venture, among other things, to deliver space to the tenant by required timelines and offers expansion options, at the tenant's election. Such options may obligate the venture to construct an additional building or, at the Company's option, to make space available in any of its existing Harborside properties. Should the venture be unable to or choose not to provide such expansion space, the venture would be liable to Schwab for its actual damages, in no event to exceed $15,000. The amount of Schwab's actual damages, up to $15,000, has been guaranteed by the Company. The project, which commenced initial operations in September 2002, is currently projected to cost the Company approximately $145,000, of which $113,685 has been incurred by the Company through September 30, 2002. The venture has an agreement with the City of Jersey City, New Jersey, in which it is required to make payments in lieu of property taxes ("PILOT"). The agreement, which will commence upon substantial completion of the property, as defined, is for a term of 20 years. The PILOT will be equal to two percent of Total Project Costs, as defined, with periodic increases, as

15

defined. Total Project Costs, per the agreement, are the greater of $78,821 or actual Total Project Costs, as defined.

RAMLAND REALTY ASSOCIATES L.L.C. (One Ramland Road)

        On August 20, 1998, the Company entered into a joint venture agreement with S.B. New York Realty Corp. to form Ramland Realty Associates L.L.C. The venture was formed to own, manage and operate One Ramland Road, a 232,000 square-foot office/flex building and adjacent developable land, located in Orangeburg, Rockland County, New York. In August 1999, the joint venture completed redevelopment of the property and placed the office/flex building in service. The Company holds a 50 percent interest in the joint venture. In 2001, the property's principal tenant, Superior Bank was closed by the Office of Thrift Supervision, and the Federal Deposit Insurance Corporation (FDIC) was named receiver. The tenant continued to meet its rental payment obligations through June 2002. In July 2002, the tenant vacated the premises and the FDIC notified the joint venture that it was rejecting the lease as of July 16, 2002. As a result of the uncertainty regarding the tenant's ability to meet its obligations through the remainder of the term of its lease, the joint venture wrote off unbilled rents receivable of $1,573 and deferred lease costs of $705, which is included in the Company's equity in earnings for the nine months ended September 30, 2002. The Company performs management, leasing and other services for the property owned by the joint venture and recognized $4, $53, $25 and $75 in fees for such services for the three and nine months ended September 30, 2002 and 2001, respectively.

ASHFORD LOOP ASSOCIATES L.P. (1001 South Dairy Ashford/2100 West Loop South)

        On September 18, 1998, the Company entered into a joint venture agreement with Prudential to form Ashford Loop Associates L.P. The venture was formed to own, manage and operate 1001 South Dairy Ashford, a 130,000 square-foot office building acquired on September 18, 1998, and 2100 West Loop South, a 168,000 square-foot office building acquired on November 25, 1998, both located in Houston, Harris County, Texas. The Company holds a 20 percent interest in the joint venture. The Company performed management and leasing services through March 2002 for the properties owned by the joint venture and recognized none, $45, $47 and $140 in fees for such services for the three and nine months ended September 30, 2002 and 2001, respectively. Under certain circumstances, Prudential has the right to convert its interest in the venture into common stock of the Company at a discount to the stock's fair market value, based on the underlying fair value of Prudential's interest in the venture at the time of conversion.

        In May 2002, the Company sent a notice to Prudential electing to exercise its option under the buy-sell provisions of the joint venture agreement. Subsequently, Prudential sent notice to the Company that it was exercising its option to put its interest in the joint venture to the Company in exchange for common stock of the Company as described above. Pursuant to the provisions of the joint venture agreement, the Company, at its option, can elect to exchange cash in lieu of stock for Prudential's interest. The Company believes its prior exercise of the buy-sell provisions acts to foreclose Prudential's subsequent election to exchange its interest for stock, a position being disputed by Prudential. The partners are currently in discussions about the relevant provisions of the agreement. However, the ultimate resolution of the dispute is not yet determinable.

ARCAP INVESTORS, L.L.C.

        In 1999, the Company invested $20,000 in ARCap Investors, L.L.C., a joint venture with several participants, which was formed to invest in sub-investment grade tranches of commercial mortgage-backed securities ("CMBS"). William L. Mack, Chairman of the Board of Directors of the Company, is a principal of an entity that owns approximately 28 percent of the venture and has nominated a member of its board of directors. At September 30, 2002, the venture held approximately $758,655 of

16

assets, comprised principally of subordinated CMBS recorded at market value. On October 2, 2002, the Company entered into a letter of intent to sell its interest in the venture for approximately $20,224.

MC-SJP MORRIS V REALTY, LLC AND MC-SJP MORRIS VI REALTY, LLC

        The Company has an agreement with SJP Properties, which provides for a cooperative effort in seeking approvals to develop up to approximately 1.8 million square feet of office development on certain vacant land owned by the Company and SJP Properties, in Hanover and Parsippany, Morris County, New Jersey. The agreement provides that the parties shall share equally in the costs associated with seeking such requisite approvals. Upon mutual consent, the Company and SJP Properties may enter into one or more joint ventures to construct on the vacant land, or seek to dispose of their respective vacant land parcels subject to the agreement. Pursuant to the agreement with SJP Properties, on August 24, 2000, the Company entered into a joint venture with SJP Properties to form MC-SJP Morris V Realty, LLC and MC-SJP Morris VI Realty, LLC, which acquired developable land for approximately $16,193. The acquired land is able to accommodate approximately 650,000 square feet of office space and is located in Parsippany, Morris County, New Jersey. The venture entered into an agreement pertaining to the acquired land and two other land parcels in Parsippany with an insurance company to provide for a guarantee on the funding of the development of four office properties, aggregating 850,000 square feet. Such agreement provides, if the venture elects to develop, that the insurance company will be admitted to the joint venture and provide all the equity required to fund the development, subject to certain conditions. In addition, the venture obtained a loan on the acquired land from a bank, which is guaranteed by the insurance company.

SOUTH PIER AT HARBORSIDE—HOTEL DEVELOPMENT

        On November 17, 1999, the Company entered into an agreement with Hyatt Corporation ("Hyatt") to develop a 350-room hotel on the Company's South Pier at Harborside Financial Center, Jersey City, Hudson County, New Jersey, which commenced operations in July 2002. The total cost of the project is estimated to be approximately $103,000. The venture has obtained a construction loan of $63,700, which each partner, including the Company, has severally guaranteed repayment of approximately $11,148. Additionally, the Company has posted an $8,000 letter of credit in support of another loan to the joint venture, $4,000 of which is indemnified by Hyatt. In addition, the Company and Hyatt have guaranteed completion of the hotel project to the joint venture's construction lender. If the joint venture fails to complete the hotel project as required under the construction loan documents and the construction loan proceeds remaining to be advanced together with the capital contributed by the partners through such date are insufficient to complete the hotel project, the Company and/or Hyatt may be required to provide additional funds sufficient to complete the hotel project.

17

SUMMARIES OF UNCONSOLIDATED JOINT VENTURES

        The following is a summary of the financial position of the unconsolidated joint ventures in which the Company had investment interests as of September 30, 2002 and December 31, 2001:

18

        The following is a summary of the results of operations of the unconsolidated joint ventures for the period in which the Company had investment interests during the three months ended September 30, 2002 and 2001: