EXHIBIT 99.2

PRIME GROUP REALTY TRUST
UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS:

INDEX TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED
FINANCIAL STATEMENTS


	Page
Basis of Presentation		2

Unaudited Pro Forma Condensed Consolidated Balance Sheet as of March 31, 2010		3

Unaudited Pro Forma Condensed Consolidated Statement of Operations for the three months ended March 31, 2010		4

Unaudited Pro Forma Condensed Consolidated Statement of Operations for the year ended December 31, 2009		5

Notes to Unaudited Pro Forma Condensed Consolidated Balance Sheet		6

Notes to Unaudited Pro Forma Condensed Consolidated Statement of Operations		7

PRIME GROUP REALTY TRUST
UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
BASIS OF PRESENTATION

The accompanying unaudited pro forma condensed consolidated financial statements reflect the financial position and results of operations of the Company after giving effect to the Continental Towers transaction described in Item 2.01 of this filing in addition to the sale of 180 North LaSalle Street that occurred on May 17, 2010.

These unaudited pro forma statements have been prepared by the Company based upon transactions identified in the related footnotes. The pro forma adjustments presented herein are shown for comparative purposes only. The unaudited pro forma statements are based on the previously reported historical financial statements of the Company and should be read in conjunction with those financial statements and the related footnotes included in the Company’s Form 10-Q for the quarterly period ended March 31, 2010 and Form 10-K for the year ended December 31, 2009.

The unaudited pro forma condensed consolidated balance sheet assumes both transactions took place on March 31, 2010. The unaudited pro forma condensed consolidated statements of operations assumes both transactions took place on January 1, 2009.

Prime Group Realty Trust
Unaudited Pro Forma Condensed Consolidated Balance Sheet
March 31, 2010

(Dollars in thousands)


				Pro Forma
				Adjustments			Pro Forma
				180 N.			Adjustments
				LaSalle			Continental			Pro
	Historical (1)			Street (2)			Towers (3)			Forma
Assets
Real estate:
Land	$	58,864		$	—		$	(12,529	)	$	46,335
Building and improvements		209,188			—			(54,479	)		154,709
Tenant improvements		32,319			—			(11,147	)		21,172
Furniture, fixtures and equipment		858			—			(99	)		759

		301,229			—			(78,254	)		222,975
Accumulated depreciation		(55,056	)		—			20,778			(34,278	)

		246,173			—			(57,476	)		188,697
In-place lease value, net		1,819			—			(1,159	)		660
Above-market lease value, net		453			—			(7	)		446

		248,445			—			(58,642	)		189,803

Property held for sale, net		70,951			(70,951	)		—			—

Cash and cash equivalents		11,440			12,363	(4)		106			23,909
Receivables, net of allowance for doubtful accounts:
Tenant		359			—			(73	)		286
Deferred rent		10,408			—			(4,587	)		5,821
Other		539			—			(12	)		527
Restricted cash escrows		25,067			—			(7,039	)		18,028
Deferred costs, net		12,075			—			(2,785	)		9,290
Other		427			—			(65	)		362

Total assets	$	379,711		$	(58,588	)	$	(73,097	)	$	248,026


Liabilities and Equity (Deficit)

Mortgage and notes payable	$	276,830		$	—		$	(115,000	)	$	161,830
Mortgage note payable — property held for sale		60,862			(60,862	)		—			—
Property held for sale		7,485			(7,485	)		—			—
Accrued interest payable		4,128			—			(3,123	)		1,005
Accrued real estate taxes		8,308			—			(3,015	)		5,293
Accrued tenant improvement allowances		494			—			(20	)		474
Accrued environmental remediation liabilities		9,898			—			—			9,898
Accounts payable and accrued expenses		4,182			—			(558	)		3,624
Liabilities for leases assumed		1,961			—			—			1,961
Below-market lease value, net		2,563			—			(1,558	)		1,005
Other		4,722			—			(1,526	)		3,196

Total liabilities		381,433			(68,347	)		(124,800	)		188,286


Commitments and contingencies

Shareholders’ (deficit) equity:
Preferred Shares, $0.01 par value; 30,000,000 shares authorized:
Series B — Cumulative Redeemable Preferred Shares, 4,000,000 shares designated, issued and outstanding		40			—			—			40
Common Shares, $0.01 par value; 100,000,000 shares authorized; 236,483 shares issued and outstanding		2			—			—			2
Additional paid-in capital		243,688			—			—			243,688
Retained deficit		(157,939	)		—			—			(157,939	)

Total equity — Prime Group Realty Trust		85,791			—			—			85,791
Noncontrolling interest		(87,513	)		9,759			51,703			(26,051	)

Total (deficit) equity		(1,722	)		9,759			51,703			59,740

Total liabilities and (deficit) equity	$	379,711		$	(58,588	)	$	(73,097	)	$	248,026

See accompanying notes.

Prime Group Realty Trust
Unaudited Pro Forma Condensed Consolidated Statement of Operations
Three Months Ended March 31, 2010
(Dollars in Thousands, except shares and per share amounts)


				Pro Forma
				Adjustments			Pro Forma
				180 N.			Adjustments
				LaSalle			Continental			Pro
	Historical (1)			Street (2)			Towers (3)			Forma
Revenue:
Rental	$	7,392		$	—		$	(2,445	)	$	4,947
Tenant reimbursements		4,602			—			(1,146	)		3,456
Other property revenues		960			—			(170	)		790
Services Company revenue		136			—			—			136

Total revenue		13,090			—			(3,761	)		9,329

Expenses:
Property operations		4,483			—			(1,407	)		3,076
Real estate taxes		2,453			—			(980	)		1,473
Depreciation and amortization		4,160			—			(976	)		3,184
General and administrative		1,291			—			—			1,291
Services Company operations		135			—			—			135

Total expenses		12,522			—			(3,363	)		9,159

Operating income		568			—			(398	)		170
Interest and other income		415			—			(2	)		413
Income from investments in unconsolidated joint venture		36			—			—			36
Interest:
Expense		(5,922	)		—			3,124			(2,798	)
Amortization of deferred financing costs		(287	)		—			26			(261	)

Loss from continuing operations		(5,190	)		—			2,750			(2,440	)
Discontinued operations		(262	)		363			—			101

Net loss		(5,452	)		363			2,750			(2,339	)
Net loss attributable to noncontrolling interest		5,404			(360	)		(2,726	)		2,318

Net loss attributable to Prime Group Realty Trust		(48	)		3			24			(21	)
Net income allocated to preferred shareholders, net of noncontrolling interest of $2,230		(20	)		—			—			(20	)

Net loss available to common shareholders	$	(68	)	$	3		$	24		$	(41	)


Basic and diluted loss attributable to common shareholders per common share:
Loss from continuing operations	$	(0.28	)	$	—		$	0.10		$	(0.18	)
Discontinued operations		(0.01	)		0.02			—			0.01

Net loss attributable to common shareholders per common share-basic and diluted	$	(0.29	)	$	0.02		$	0.10		$	(0.17	)

Prime Group Realty Trust
Unaudited Pro Forma Condensed Consolidated Statement of Operations
Year ended December 31, 2009
(Dollars in Thousands, except shares and per share amounts)


				Pro Forma
				Adjustments			Pro Forma
				180 N.			Adjustments
				LaSalle			Continental			Pro
	Historical (1)			Street (2)			Towers (3)			Forma
Revenue:
Rental	$	41,793		$	(9,350	)	$	(11,837	)	$	20,606
Tenant reimbursements		30,588			(8,412	)		(6,223	)		15,953
Other property revenues		4,553			(28	)		(763	)		3,762
Services Company revenue		981			—			—			981

Total revenue		77,915			(17,790	)		(18,823	)		41,302

Expenses:
Property operations		26,020			(5,377	)		(5,608	)		15,035
Real estate taxes		15,504			(4,129	)		(4,299	)		7,076
Depreciation and amortization		27,619			(8,481	)		(6,460	)		12,678
General and administrative		6,211			—			—			6,211
Services Company operations		1,063			—			—			1,063
Provision for asset impairment		63,013			—			(59,937	)		3,076
Loss on tax indemnification		1,799			—			(1,799	)		—

Total expenses		141,229			(17,987	)		(78,103	)		45,139

Operating loss		(63,314	)		197			59,280			(3,837	)
Interest and other income		4,948			(7	)		(4	)		4,937
Income from investments in unconsolidated joint venture		84			—			—			84
Interest:
Expense		(25,790	)		3,504			6,845			(15,441	)
Amortization of deferred financing costs		(4,244	)		2			103			(4,139	)
Gain on sales of real estate		—			8,494			—			8,494
Loss on asset disposition and extinguishment of debt		—			—			(7,290	)		(7,290	)

(Loss) income from continuing operations		(88,316	)		12,190			58,934			(17,192	)
Discontinued operations		36			—			—			36

Net (loss) income		(88,280	)		12,190			58,934			(17,156	)
Net loss (income) attributable to noncontrolling interest		79,879			(12,082	)		(58,413	)		9,384

Net loss attributable to Prime Group Realty Trust		(8,401	)		108			521			(7,772	)
Net income allocated to preferred shareholders, net of noncontrolling interest of $8,920		(80	)		—			—			(80	)

Net loss available to common shareholders	$	(8,481	)	$	108		$	521		$	(7,852	)


Basic and diluted loss attributable to common shareholders per common share:
Loss from continuing operations	$	(35.86	)	$	0.46		$	2.20		$	(33.20	)
Discontinued operations		—			—			—			—

Net loss attributable to common shareholders per common share-basic and diluted	$	(35.86	)	$	0.46		$	2.20		$	(33.20	)

Prime Group Realty Trust
Notes to Unaudited Pro Forma Condensed Consolidated Balance Sheet
March 31, 2010

(1)		Represents the Company’s historical consolidated balance sheet as of March 31, 2010.

(2)		Represents the elimination of the Company’s historical ownership amounts related to 180 N. LaSalle Street.

(3)		Represents the elimination of the Company’s historical ownership amounts related to Continental Towers.

(4)		Represents the net proceeds received from the sale of 180 N. LaSalle Street.

Prime Group Realty Trust
Notes to Unaudited Pro Forma Condensed Consolidated Statement of Operations
Three Months Ended March 31, 2010 and Year Ended December 31, 2009

(1)		Represents the Company’s historical consolidated statements of operations.

(2)		Represents the elimination of the Company’s historical ownership amounts related to 180 N. LaSalle Street.

(3)		Represents the elimination of the Company’s historical ownership amounts related to Continental Towers.

PRIME GROUP REALTY TRUST 8-K