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 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes þ  No o.

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer, (as definedor a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act).
Large Accelerated Filer o     Accelerated Filer þ     Non-Accelerated Filer o.Act. (Check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o  No þ.

The number of shares of the registrant’s Common Stock, $0.001 par value, outstanding as of October 26, 2007May 6, 2008 was 8,565,264.

Gladstone Commercial Corporation (the “Company”) is a Maryland corporation that operates in a manner so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes and was incorporated on February 14, 2003 under the General Corporation Law of Maryland for the purpose of engaging in the business of investing in real estate properties net leased to creditworthy entities and making mortgage loans to creditworthy entities. Subject to certain restrictions and limitations, the business of the Company is managed by Gladstone Management Corporation, a Delaware corporation (the “Adviser”).

The Company conducts substantially all of its operations through a subsidiary, Gladstone Commercial Limited Partnership, a Delaware limited partnership, (the “Operating Partnership”). As the Company currently owns all of the general and limited partnership interests of the Operating Partnership through GCLP Business Trust I and II as disclosed below, the financial position and results of operations of the Operating Partnership are consolidated with those of the Company.

Gladstone Commercial Partners, LLC, a Delaware limited liability company (“Commercial Partners”) and a subsidiary of the Company, was organized to engage in any lawful act or activity for which a limited liability company may be organized in Delaware. Commercial Partners has the power to make and perform all contracts and to engage in all activities to carry out the purposes of the Company, and all other powers available to it as a limited liability company. As the Company currently owns all of the membership interests of Commercial Partners, the financial position and results of operations of Commercial Partners are consolidated with those of the Company.

Gladstone Lending, LLC, a Delaware limited liability company (“Gladstone Lending”), and a subsidiary of the Company, was created to conduct all operations related to real estate mortgage loans of the Company. As the Operating Partnership currently owns all of the membership interests of Gladstone Lending, the financial position and results of operations of Gladstone Lending are consolidated with those of the Company.

Gladstone Commercial Advisers, Inc., a Delaware corporation (“Commercial Advisers”) and a subsidiary of the Company, is a taxable REIT subsidiary (“TRS”), which was created to collect all non-qualifying income related to the Company’s real estate portfolio. It is currently anticipated that this income will predominately consist of fees received by the Company related to the leasing of real estate. There have been no such fees earned to date. Since the Company owns 100% of the voting securities of Commercial Advisers, the financial position and results of operations of Commercial Advisers are consolidated with those of the Company.

GCLP Business Trust I and GCLP Business Trust II, subsidiaries of the Company, each are business trusts formed under the laws of the Commonwealth of Massachusetts on December 28, 2005. The Company transferred its 99% limited partnership interest in the Operating Partnership to GCLP Business Trust I in exchange for 100 trust shares. Commercial Partners transferred its 1% general partnership interest in the Operating Partnership to GCLP Business Trust II in exchange for 100 trust shares.

Interim financial statements of the Company are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X. Accordingly, certain disclosures accompanying annual financial statements prepared in accordance with GAAP are omitted. In the opinion of management, all adjustments, consisting solely of normal recurring accruals, necessary for the fair statement of financial statements for the interim period have been included.

The Company records investments in real estate at cost and capitalizes improvements and replacements when they extend the useful life or improve the efficiency of the asset. The Company expenses costs of repairs and maintenance as incurred. The Company computes depreciation using the straight-line method over the estimated useful life of 39 years for buildings and improvements, five to seven years for equipment and fixtures and the shorter of the useful life or the remaining lease term for tenant improvements and leasehold interests.

The Company accounts for its acquisitions of real estate in accordance with SFASStatement of Financial Accounting Standards (“SFAS”) No. 141, “Business Combinations,” which requires the purchase price of real estate to be allocated to the acquired tangible assets and liabilities, consisting of land, building, tenant improvements, long-term debt and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, the value of in-place leases, the value of unamortized lease origination costs, and the value of tenant relationships and the value of capital lease obligations based in each case on their fair values.

Management’s estimates of value are made using methods similar to those used by independent appraisers (e.g., discounted cash flow analysis). Factors considered by management in its analysis include an estimate of carrying costs during hypothetical expected lease-up periods considering current market conditions, and costs to execute similar leases. The Company also considers information obtained about each property as a result of its pre-acquisition due diligence, marketing and leasing activities in estimating the fair value of the tangible and intangible assets and liabilities acquired. In estimating carrying costs, management also includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, which primarily range from nine to eighteen months, depending on specific local market conditions. Management also estimates costs to execute similar leases including leasing commissions, legal and other related expenses to the extent that such costs are not already incurred in connection with a new lease origination as part of the transaction.

The Company allocates purchase price to the fair value of the tangible assets of an acquired property by valuing the property as if it were vacant. The “as-if-vacant” value is allocated to land, building, and tenant improvements based on management’s determination of the relative fair values of these assets. Real estate depreciation expense on these tangible assets including discontinued operations, was $1,823,962$2,103,633 and $5,176,009$1,593,790 for the three and nine months ended September 30,March 31, 2008 and 2007, respectively, and $1,383,279 and $3,862,257 for the three and nine months ended September 30, 2006, respectively.

Above-market and below-market in-place lease values for owned properties are recorded based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) management’s estimate of fair market lease rates for the corresponding in-place leases, measured over a period equal to the remaining non-cancelable term of the lease. The capitalized above-market lease values, included in the accompanying balance sheet as part of deferred rent receivable, are amortized as a reduction of rental income over the remaining non-cancelable terms of the respective leases. Total amortization related to above-market lease values was $63,374 and $190,122 for both the three and nine months ended September 30, 2007, respectively,March 31, 2008 and $63,375 and $190,123 for the three and nine months ended September 30, 2006, respectively.2007. The capitalized below-market lease values, included in the accompanying balance sheet as deferred rent liability, are amortized as an increase to rental income over the remaining non-cancelable terms of the respective leases. Total amortization related to below-market lease values was $196,391 and $589,173 for both the three and nine months ended September 30, 2007 respectively,March 31, 2008 and $196,391 and $499,870 for the three and nine months ended September 30, 2006, respectively.2007.

The total amount of the remaining intangible assets acquired, which consist of in-place lease values, unamortized lease origination costs, and customer relationship intangible values, are allocated based on management’s evaluation of the specific characteristics of each tenant’s lease and the Company’s overall relationship with that respective tenant. Characteristics to be considered by management in allocating these values include the nature and extent of our existing business relationships with the tenant, growth prospects for developing new business with the tenant, the tenant’s credit quality and expectations of lease renewals (including those existing under the terms of the lease agreement), among other factors.

The value of in-place leases and unamortized lease origination costs are amortized to expense over the remaining term of the respective leases, which generally range from five to twenty years. The value of customer relationship intangibles, which is the benefit to the Company resulting from the likelihood of an existing tenant renewing its lease, are amortized to expense over the remaining term and any anticipated renewal periods in the respective leases, but in no event does the amortization period for intangible assets exceed the remaining depreciable life of the building. Should a tenant terminate its lease, the unamortized portion of the above-market and below-market lease values, in-place lease values, unamortized lease origination costs and customer relationship intangibles will be charged to expense. Total amortization expense related to these intangible assets including discontinued operations, was $844,421$884,129 and $2,546,340$824,017 for the three and nine months ended September 30,March 31, 2008 and 2007, respectively, and $779,361 and $2,216,193 for the three and nine months ended September 30, 2006, respectively.

The following table summarizes the net value of other intangible assets and the accumulated amortization for each intangible asset class:

The Company’s accounting policies require that it reflect in its financial statements an allowance for estimated credit losses with respect to mortgage loans it has made based upon its evaluation of known and inherent risks associated with its private lending assets. Management reflects provisions for loan losses based upon its assessment of general market conditions, its internal risk management policies and credit risk rating system, industry loss experience, its assessment of the likelihood of delinquencies or defaults, and the value of the collateral underlying its investments. Actual losses, if any, could ultimately differ from these estimates. There have been no provisions for loan losses in the Company’s history.

The Company considers all short-term, highly liquid investments that are both readily convertible to cash and have a maturity of three months or less at the time of purchase to be cash equivalents; except that any such investments purchased with funds held in escrow or similar accounts are classified as restricted cash. Items classified as cash equivalents include commercial paper and money-market funds. All of the Company’s cash and cash equivalents at September 30, 2007March 31, 2008 were held in the custody of twoone financial institutions,institution, and the Company’s balance at times may exceed federally insurable limits. The Company mitigates this risk by depositing funds with major financial institutions.

Restricted cash consists of security deposits and funds held in escrow for certain tenants. The funds held in escrow are for capital improvements, taxes, insurance and other replacement reserves for certain of our tenants. These funds will be released to the tenants upon completion of agreed upon tasks as specified in the lease agreements, mainly consisting of maintenance and repairs on the buildings, and when evidence of insurance and tax payments has been submitted to the Company.

Funds held in escrow consist of funds held by certain of the Company’s lenders for properties held as collateral by these lenders. These funds consist of replacement reserves for capital improvements, repairs and maintenance, insurance and taxes. These funds will be released to the Company upon completion of agreed upon tasks as specified in the mortgage agreements, mainly consisting of maintenance and repairs on the buildings, and when evidence of insurance and tax payments has been submitted to the lenders.

In conjunction with the Company’s acquisition of a building in Fridley, Minnesota on February 26, 2008, it was assigned a ground lease on the parking lot of the building at the time of closing, which had a purchase obligation to acquire the land under the ground lease at the end of the term, April 1, 2014. In accordance with SFAS No. 13 “Accounting for Leases,” the Company accounted for the threeground lease as a capital lease and nine months ended September 30, 2006, respectively. Amortization of financing costs are included inrecorded the interest expense line item incorresponding obligation under the consolidated financial statements.capital lease.

Rental revenue includes rents that each tenant pays in accordance with the terms of its respective lease reported on a straight-line basis over the non-cancelable term of the lease. Certain of the Company’s leases currently contain rental increases at specified intervals, and straight-line basis accounting requires the Company to record an asset, and include in revenues, deferred rent receivable that will be received if the tenant makes all rent payments required through the expiration of the initial term of the lease. Deferred rent receivable in the accompanying balance sheet includes the cumulative difference between rental revenue as recorded on a straight line basis and rents received from the tenants in accordance with the lease terms, along with the capitalized above-market lease values of certain acquired properties. Accordingly, the Company determines, in its judgment, to what extent the deferred rent receivable applicable to each specific tenant is collectible. The Company reviews deferred rent receivable, as it relates to straight line rents, on a quarterly basis and takes into consideration the tenant’s payment history, the financial condition of the tenant, business conditions in the industry in which the tenant operates and economic conditions in the area in which the property is located. In the event that the collectibility of deferred rent with respect to any given tenant is in doubt, the Company records an increase in the allowance for uncollectible accounts or records a direct write-off of the specific rent receivable, which would have an adverse effect on the net income for the year in which the reserve is increased or the direct write-off is recorded and would decrease total assets and stockholders’ equity. No such reserves have been recorded as of September 30, 2007.March 31, 2008.

Management considers its loans and other lending investments to be held-for-investment. The Company reflects held-for-investment investments at amortized cost less allowance for loan losses, acquisition premiums or discounts, and deferred loan fees and undisbursed loan funds.fees. On occasion, the Company may acquire loans at small premiums or discounts based on the credit characteristics of such loans. These premiums or discounts are recognized as yield adjustments over the lives of the related loans. Loan origination or exit fees, as well as direct loan origination costs, are also deferred and recognized over the lives of the related loans as yield adjustments. If loans with premiums, discounts, or loan origination or exit fees are prepaid, the Company immediately recognizes the unamortized portion as a decrease or increase in the prepayment gain or loss. Interest income is recognized using the effective interest method applied on a loan-by-loan basis. Prepayment penalties or yield maintenance payments from borrowers are recognized as additional income when received.

The Company has operated and intends to continue to operate in a manner that will allow it to qualify as a REIT under the Internal Revenue Code of 1986, as amended, and accordingly will not be subject to federal income taxes on amounts distributed to stockholders (except income from foreclosure property), provided it distributes at least 90% of its REIT taxable income to its stockholders and meets certain other conditions. To the extent that the Company satisfies the distribution requirement but distributes less than 100% of its taxable income, the Company will be subject to federal corporate income tax on its undistributed income.

Commercial Advisers is a wholly-owned TRS that is subject to federal and state income taxes. Though Commercial Advisers has had no activity to date, the Company would account for any future income taxes in accordance with the provisions of SFAS No. 109, “Accounting for Income Taxes.” Under SFAS No. 109, the Company accounts for income taxes using the asset and liability method under which deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases.

SFAS No. 131, “Disclosures about Segments of an Enterprise and Related Information” provides standards for public companies relating to the reporting of financial and descriptive information about their operating segments in financial statements. Operating segments are defined as components of an enterprise for which separate financial information is available and is evaluated regularly by the chief operating decision maker or decision making group in determining how to allocate resources and in assessing performance. Company management is the chief decision making group. As discussed in Note 10,9, the Company’s operations are derived from two operating segments, one segment purchases real estate (land, buildings and other improvements), which is simultaneously leased to existing users, and the other segment originates mortgage loans and collects principal and interest payments.

The Company purchased two properties in Canada in October of 2004. These properties were classified as held for sale as of June 30, 2006, and were sold in July 2006. All gains and losses from foreign currency transactions are reflected in discontinued operations in the Company’s consolidated financial statements. Rental payments from these properties were received in Canadian dollars. In accordance with SFAS No. 52, “Foreign Currency Translation,” the rental revenue received was recorded using the exchange rate as of the transaction date, which was the first day of each month. In addition to rental payments that were denominated in Canadian dollars, theThe Company also hashad a bank account in Canada, and the long-term financings on the two Canadian properties were also issuedwhich was closed in Canadian dollars. AllDecember 2007. The cash deferred rent assets and mortgage notes payable related to the Canadian properties wereaccount was re-valued at each balance sheet date to reflect the then current exchange rate. The gains or losses from the valuation of the cash were recorded on the income statement as a realized gain or loss, and the valuation of the deferred rent assets and mortgage notes payable was recorded on the income statement as unrealized gains or losses on the translation of assets and liabilities. Realizedloss. A realized foreign currency gainsgain of $33,487 and $33,550 were$7 was recorded for the three and nine months ended September 30, 2007, respectively, andMarch 31, 2007. There were no realized foreign currency gains or losses of $1,044 and $201,017 were recorded for the three and nine months ended September 30, 2006, respectively. A realized gain of $1,422,026 related to the sale of the Canadian properties was recognized for the three and nine months ended September 30, 2006. These realized gains and losses were from the valuation of cash, tax payments made to the Canadian government, and the previously unrealized foreign currency losses associated with the valuation of the deferred rent assets and mortgage notes payable that became realized foreign currency losses as of the date of sale.ending March 31, 2008.

In March of 2005, the FASB issued Interpretation No. 47, “Accounting for Conditional Asset Retirement Obligations” (“FIN 47”). FIN 47 requires an entity to recognize a liability for a conditional asset retirement obligation when incurred if the liability can be reasonably estimated. FIN 47 clarifies that the term “Conditional Asset Retirement Obligation” refers to a legal obligation (pursuant to existing laws or by contract) to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event that may or may not be within the control of the entity. FIN 47 also clarifies when an entity would have sufficient information to reasonably estimate the fair value of an asset retirement obligation. The Company has accrued a liability and corresponding increase to the cost of the related properties for disposal related to all properties constructed prior to 1985 that have, or may have, asbestos present in the building. The Company accrued a liability during the ninethree months ended September 30, 2007March 31, 2008 of $63,981$259,435 related to properties acquired during the period. The Company also recorded expense of $29,440$30,468 and $86,542,$28,160, during the three and nine months ended September 30,March 31, 2008 and 2007, respectively, and $30,619 and $112,192 during the three and nine months ended September 30, 2006, respectively, including discontinued operations, related to the cumulative accretion of the obligation.

In September 2006, the FASB issued Statement of Financial Accounting Standards (“SFAS”)SFAS No. 157, “Fair Value Measurements.”Measurements” (“SFAS 157”). SFAS 157 defines fair value, establishes a framework for measuring fair value in GAAP and expands disclosures about fair value measurements. SFAS 157 is effective for financial statements issued for fiscal years beginning after November 15, 2007, and interim periods within those fiscal years. The Company is required to adopthas only partially adopted the provisions of SFAS 157 beginning with the fiscal year beginning January 1, 2008. The Company believes there will be no impactbecause of the issuance of FSP SFAS 157-2 (the “FSP”), which allows companies to delay the effective date of SFAS 157 for non-financial assets and liabilities. The FSP permits companies that have not already issued either interim or annual financial statements reflecting the adoption of SFAS 157 to delay the effective date of SFAS 157 for non-financial assets and non-financial liabilities, expect for items that are recognized or disclosed at fair value in the financial statements on a recurring basis. The partial adoption had no impact on the Company’s results of operations.

In February 2007, the FASB issued SFAS No. 159, “The Fair Value Option for Financial Assets and Financial LiabilitiesLiabilities” (“SFAS 159”).”SFAS 159 allows entities to measure at fair value many financial instruments and certain other assets and liabilities that are not otherwise required to be measured at fair value. SFAS 159 is effective for fiscal years beginning after November 15, 2007. The Company believes there will beadopted SFAS 159 effective for the fiscal year beginning January 1, 2008, and the adoption had no impact of the adoption on the Company’s results of operations.

In March 2008, the FASB issued SFAS No. 161, “Disclosures about Derivative Instruments and Hedging Activities” (“SFAS 161”), which is intended to help investors better understand how derivative instruments and hedging activities affect an entity’s financial position, financial performance and cash flows through enhanced disclosure requirements. The enhanced disclosures primarily surround disclosing the objectives and strategies for using derivative instruments by their underlying risk as well as a tabular format of the fair values of the derivative instruments and their gains and losses. SFAS 161 is effective for financial statements issued for fiscal years and interim periods beginning after November 15, 2008. The Company does not believe the adoption of this pronouncement will have a material impact on its results of operations.

The preparation of financial statements in conformity with 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 materially differ from those estimates.

Certain amounts from prior years’ financial statements have been reclassified to conform to the current year presentation. These reclassifications had no effect on previously reported net income or stockholders’ equity.

The following tables set forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2007March 31, 2008 and 2006:2007:

The following table sets forth the components of the Company’s investments in real estate:estate, including capitalized leases:

Future operating lease payments under non-cancelable leases, excluding customer reimbursement of expenses, in effect at September 30, 2007,March 31, 2008, were as follows:

As of September 30, 2007March 31, 2008 the Company had 1314 fixed-rate mortgage notes payable collateralized by a total of 3033 properties. EachThe obligor under each of these notes is in a wholly-owned separate borrowing entity which holdsowns the real estate collateral. The Company is not a co-borrower but has limited recourse liabilities that could result from: a borrower voluntarily filing for bankruptcy, improper conveyance of a property, fraud or material misrepresentation, misapplication or misappropriation of rents, security deposits, insurance proceeds or condemnation proceeds, and physical waste or damage to the property resulting from a borrower’s gross negligence or willful misconduct. The Company also indemnifies lenders against claims resulting from the presence of hazardous substances or activity involving hazardous substances in violation of environmental laws on a property.