
| Delaware (State
      or other jurisdiction of
      incorporation or organization) | 41-0518430 (I.R.S.
      Employer Identification
      No.) | 
| 1776
      Lincoln Street, Suite 700, Denver, Colorado (Address
      of principal executive offices) | 80203 (Zip
      Code) | 
| Large
      accelerated filer þ | Accelerated
      filer o | 
| Non-accelerated
      filer o (Do
      not check if a smaller reporting company) | Smaller
      reporting company o | 
| Part
      I. | FINANCIAL
      INFORMATION | PAGE | |
|  | |||
| Item
      1. | Financial
      Statements (Unaudited) | ||
| Consolidated
      Balance Sheets March
      31, 2009, and December 31, 2008 | 3 | ||
| Consolidated
      Statements of Operations Three
      Months Ended March 31, 2009, and 2008 | 4 | ||
| Consolidated
      Statements of Stockholders’ Equity and
      Comprehensive Income (Loss) March
      31, 2009, and December 31, 2008 | 5 | ||
| Consolidated
      Statements of Cash Flows Three
      Months Ended March 31, 2009, and 2008 | 6 | ||
| Notes
      to Consolidated Financial Statements March
      31, 2009 | 8 | ||
| Item
      2. | Management’s
      Discussion and Analysis of Financial Condition
      and Results of Operations | 25 | |
| Item
      3. | Quantitative
      and Qualitative Disclosures About Market Risk (included
      within the content of Item 2) | 50 | |
| Item
      4. | Controls
      and Procedures | 50 | |
| Part
      II. | OTHER
      INFORMATION | ||
| Item
      1A. | Risk
      Factors | 50 | |
| Item
      2. | Unregistered
      Sales of Equity Securities and Use of Proceeds | 50 | |
| Item
      6. | Exhibits | 52 | |
| PART
      I.  FINANCIAL INFORMATION | ||||||
| ITEM
      1.   FINANCIAL STATEMENTS | ||||||
| ST.
      MARY LAND & EXPLORATION COMPANY AND SUBSIDIARIES | ||||||
| CONSOLIDATED
      BALANCE SHEETS (UNAUDITED) | ||||||
| (In
      thousands, except share amounts) | ||||||
| March
      31, | December
      31, | |||||
|  | 2009 | 2008 | ||||
| ASSETS |  (As
      adjusted, Note 7) | |||||
| Current
      assets: | ||||||
| Cash
      and cash equivalents | $ | 2,211 | $ | 6,131 | ||
| Short-term
      investments | 1,010 | 1,002 | ||||
| Accounts
      receivable, net of allowance for doubtful accounts | ||||||
| of
      $16,991 in 2009 and $16,788 in 2008 | 113,779 | 157,690 | ||||
| Refundable
      income taxes | - | 13,161 | ||||
| Prepaid
      expenses and other | 22,930 | 22,161 | ||||
| Accrued
      derivative asset | 119,111 | 111,649 | ||||
| Total
      current assets | 259,041 | 311,794 | ||||
| Property
      and equipment (successful efforts method), at cost: | ||||||
| Land | 1,350 | 1,350 | ||||
| Proved
      oil and gas properties | 2,941,940 | 2,969,722 | ||||
| Less
      - accumulated depletion, depreciation, and amortization | (1,029,858 | ) | (947,207 | ) | ||
| Unproved
      oil and gas properties, net of impairment allowance | ||||||
| of
      $43,069 in 2009 and $42,945 in 2008 | 167,905 | 170,644 | ||||
| Wells
      in progress | 54,657 | 90,910 | ||||
| Materials
      inventory, at lower of cost or market | 36,759 | 40,455 | ||||
| Other
      property and equipment, net of accumulated depreciation | ||||||
| of
      $14,676 in 2009 and $13,848 in 2008 | 13,442 | 13,458 | ||||
| 2,186,195 | 2,339,332 | |||||
| Other
      noncurrent assets: | ||||||
| Accrued
      derivative asset | 24,246 | 21,541 | ||||
| Restricted
      cash subject to Section 1031 Exchange | 10,050 | 14,398 | ||||
| Other
      noncurrent assets | 9,649 | 10,182 | ||||
| Total
      other noncurrent assets | 43,945 | 46,121 | ||||
| Total
      Assets | $ | 2,489,181 | $ | 2,697,247 | ||
| LIABILITIES
      AND STOCKHOLDERS' EQUITY | ||||||
| Current
      liabilities: | ||||||
| Accounts
      payable and accrued expenses | $ | 201,282 | $ | 254,811 | ||
| Accrued
      derivative liability | 1,247 | 501 | ||||
| Deferred
      income taxes | 42,210 | 41,289 | ||||
| Total
      current liabilities | 244,739 | 296,601 | ||||
| Noncurrent
      liabilities: | ||||||
| Long-term
      credit facility | 299,000 | 300,000 | ||||
| Senior
      convertible notes, net of unamortized | ||||||
| discount
      of $26,695 in 2009, and $28,787 in 2008 | 260,805 | 258,713 | ||||
| Asset
      retirement obligation | 109,653 | 108,993 | ||||
| Net
      Profits Plan liability | 154,075 | 177,366 | ||||
| Deferred
      income taxes | 305,471 | 354,328 | ||||
| Accrued
      derivative liability | 18,832 | 27,419 | ||||
| Other
      noncurrent liabilities | 11,730 | 11,318 | ||||
| Total
      noncurrent liabilities | 1,159,566 | 1,238,137 | ||||
| Commitments
      and contingencies | ||||||
| Stockholders'
      equity: | ||||||
| Common
      stock, $0.01 par value: authorized  - 200,000,000
      shares; | ||||||
| issued:  62,567,962
      shares in 2009 and 62,465,572 shares in 2008; | ||||||
| outstanding,
      net of treasury shares: 62,390,975 shares in 2009 | ||||||
| and
      62,288,585 shares in 2008 | 626 | 625 | ||||
| Additional
      paid-in capital | 141,872 | 141,283 | ||||
| Treasury
      stock, at cost:  176,987 shares in 2009 and 2008 | (1,773 | ) | (1,892 | ) | ||
| Retained
      earnings | 866,457 | 957,200 | ||||
| Accumulated
      other comprehensive income | 77,694 | 65,293 | ||||
| Total
      stockholders' equity | 1,084,876 | 1,162,509 | ||||
| Total
      Liabilities and Stockholders' Equity | $ | 2,489,181 | $ | 2,697,247 | ||
| ST.
      MARY LAND & EXPLORATION COMPANY AND SUBSIDIARIES | ||||||
| CONSOLIDATED
      STATEMENTS OF OPERATIONS (UNAUDITED) | ||||||
| (In
      thousands, except per share amounts) | ||||||
| For
      the Three Months | ||||||
| Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
|  (As
      adjusted, Note 7) | ||||||
| Operating
      revenues and other income: | ||||||
| Oil
      and gas production revenue | $ | 130,417 | $ | 310,432 | ||
| Realized
      oil and gas hedge gain (loss) | 55,620 | (23,950 | ) | |||
| Gain
      (loss) on sale of proved properties | (599 | ) | 56,017 | |||
| Marketed
      gas system and other operating revenue | 13,782 | 19,603 | ||||
| Total
      operating revenues and other income | 199,220 | 362,102 | ||||
| Operating
      expenses: | ||||||
| Oil
      and gas production expense | 55,829 | 59,476 | ||||
| Depletion,
      depreciation, amortization, | ||||||
| and
      asset retirement obligation liability accretion | 91,712 | 70,354 | ||||
| Exploration | 13,598 | 14,308 | ||||
| Impairment
      of proved properties | 147,049 | - | ||||
| Abandonment
      and impairment of unproved properties | 3,902 | 1,008 | ||||
| Impairment
      of materials inventory | 8,616 | - | ||||
| General
      and administrative | 16,399 | 21,128 | ||||
| Change
      in Net Profits Plan liability | (23,291 | ) | 13,626 | |||
| Marketed
      gas system expense | 13,383 | 17,745 | ||||
| Unrealized
      derivative loss | 1,846 | 6,417 | ||||
| Other
      expense | 5,642 | 700 | ||||
| Total
      operating expenses | 334,685 | 204,762 | ||||
| Income
      (loss) from operations | (135,465 | ) | 157,340 | |||
| Nonoperating
      income (expense): | ||||||
| Interest
      income | 22 | 97 | ||||
| Interest
      expense | (6,096 | ) | (6,593 | ) | ||
| Income
      (loss) before income taxes | (141,539 | ) | 150,844 | |||
| Income
      tax benefit (expense) | 53,916 | (55,870 | ) | |||
| Net
      income (loss) | $ | (87,623 | ) | $ | 94,974 | |
| Basic
      weighted-average common shares outstanding | 62,335 | 62,861 | ||||
| Diluted
      weighted-average common shares outstanding | 62,335 | 64,045 | ||||
| Basic
      net income (loss) per common share | $ | (1.41 | ) | $ | 1.51 | |
| Diluted
      net income (loss) per common share | $ | (1.41 | ) | $ | 1.48 | |
| ST.
      MARY LAND & EXPLORATION COMPANY AND SUBSIDIARIES | ||||||||||||||||||||||
| CONSOLIDATED
      STATEMENTS OF STOCKHOLDERS' EQUITY AND COMPREHENSIVE INCOME (LOSS)
      (UNAUDITED) | ||||||||||||||||||||||
| (In
      thousands, except share amounts) | ||||||||||||||||||||||
| Accumulated | ||||||||||||||||||||||
| Additional | Other | Total | ||||||||||||||||||||
| Common
      Stock | Paid-in | Treasury
      Stock | Retained | Comprehensive | Stockholders' | |||||||||||||||||
| Shares | Amount | Capital | Shares | Amount | Earnings | Income
      (Loss) | Equity | |||||||||||||||
| Balances,
      December 31, 2007 (As adjusted, Note 7) | 64,010,832 | $ | 640 | $ | 211,913 | (1,009,712 | ) | $ | (29,049 | ) | $ | 876,038 | $ | (156,968 | ) | $ | 902,574 | |||||
| Comprehensive
      income, net of tax: | ||||||||||||||||||||||
|  
      Net income (As adjusted, Note 7) | - | - | - | - | - | 87,348 | - | 87,348 | ||||||||||||||
|  
      Change in derivative instrument fair value | - | - | - | - | - | - | 177,005 | 177,005 | ||||||||||||||
|  
      Reclassification to earnings | - | - | - | - | - | - | 46,463 | 46,463 | ||||||||||||||
|  
      Minimum pension liability adjustment | - | - | - | - | - | - | (1,207 | ) | (1,207 | ) | ||||||||||||
| Total
      comprehensive income | 309,609 | |||||||||||||||||||||
| Cash
      dividends, $ 0.10 per share | - | - | - | - | - | (6,186 | ) | - | (6,186 | ) | ||||||||||||
| Treasury
      stock purchases | - | - | - | (2,135,600 | ) | (77,150 | ) | - | - | (77,150 | ) | |||||||||||
| Retirement
      of treasury stock | (2,945,212 | ) | (29 | ) | (103,237 | ) | 2,945,212 | 103,266 | - | - | - | |||||||||||
| Issuance
      of common stock under Employee | ||||||||||||||||||||||
|  
      Stock Purchase Plan | 45,228 | - | 1,055 | - | - | - | - | 1,055 | ||||||||||||||
| Issuance
      of common stock upon settlement of | ||||||||||||||||||||||
|     
      RSUs following expiration of restriction period, | ||||||||||||||||||||||
|  
      net of shares used for tax withholdings | 482,602 | 5 | (6,910 | ) | - | - | - | - | (6,905 | ) | ||||||||||||
| Sale
      of common stock, including income | ||||||||||||||||||||||
|  
      tax benefit of stock option exercises | 868,372 | 9 | 24,691 | - | - | - | - | 24,700 | ||||||||||||||
| Stock-based
      compensation expense | 3,750 | - | 13,771 | 23,113 | 1,041 | - | - | 14,812 | ||||||||||||||
| Balances,
      December 31, 2008 (As adjusted, Note 7) | 62,465,572 | $ | 625 | $ | 141,283 | (176,987 | ) | $ | (1,892 | ) | $ | 957,200 | $ | 65,293 | $ | 1,162,509 | ||||||
| Comprehensive
      income (loss), net of tax: | ||||||||||||||||||||||
|  
      Net loss | - | - | - | - | - | (87,623 | ) | - | (87,623 | ) | ||||||||||||
|  
      Change in derivative instrument fair value | - | - | - | - | - | - | (14,148 | ) | (14,148 | ) | ||||||||||||
|  
      Reclassification to earnings | - | - | - | - | - | - | 26,550 | 26,550 | ||||||||||||||
|  
      Minimum pension liability adjustment | - | - | - | - | - | - | (1 | ) | (1 | ) | ||||||||||||
| Total
      comprehensive loss | (75,222 | ) | ||||||||||||||||||||
| Cash
      dividends, $ 0.05 per share | - | - | - | - | - | (3,120 | ) | - | (3,120 | ) | ||||||||||||
| Issuance
      of common stock upon settlement of | ||||||||||||||||||||||
|     
      RSUs following expiration of restriction period, | ||||||||||||||||||||||
|  
      net of shares used for tax withholdings, | ||||||||||||||||||||||
|   including
      income tax cost of RSUs | 85,638 | 1 | (3,240 | ) | - | - | - | - | (3,239 | ) | ||||||||||||
| Sale
      of common stock, including income | ||||||||||||||||||||||
|  
      tax benefit of stock option exercises | 15,502 | - | 172 | - | - | - | - | 172 | ||||||||||||||
| Stock-based
      compensation expense | 1,250 | - | 3,657 | - | 119 | - | - | 3,776 | ||||||||||||||
| Balances,
      March 31, 2009 | 62,567,962 | $ | 626 | $ | 141,872 | (176,987 | ) | $ | (1,773 | ) | $ | 866,457 | $ | 77,694 | $ | 1,084,876 | ||||||
| ST.
      MARY LAND & EXPLORATION COMPANY AND SUBSIDIARIES | ||||||
| CONSOLIDATED
      STATEMENTS OF CASH FLOWS (UNAUDITED) | ||||||
| (In
      thousands) | ||||||
| For
      the Three Months | ||||||
| Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
|  (As
      adjusted, Note 7) | ||||||
| Cash
      flows from operating activities: | ||||||
| Reconciliation
      of net income (loss) to net cash provided | ||||||
| by
      operating activities: | ||||||
| Net
      income (loss) | $ | (87,623 | ) | $ | 94,974 | |
| Adjustments
      to reconcile net income (loss) to net cash | ||||||
| provided
      by operating activities: | ||||||
| (Gain)
      loss on sale of proved properties | 599 | (56,017 | ) | |||
| Depletion,
      depreciation, amortization, | ||||||
| and
      asset retirement obligation liability accretion | 91,712 | 70,354 | ||||
| Exploratory
      dry hole expense | 94 | 690 | ||||
| Impairment
      of proved properties | 147,049 | - | ||||
| Abandonment
      and impairment of unproved properties | 3,902 | 1,008 | ||||
| Impairment
      of materials inventory | 8,616 | - | ||||
| Stock-based
      compensation expense* | 3,776 | 3,310 | ||||
| Change
      in Net Profits Plan liability | (23,291 | ) | 13,626 | |||
| Unrealized
      derivative loss | 1,846 | 6,417 | ||||
| Loss
      related to hurricanes | 2,093 | - | ||||
| Deferred
      income taxes | (55,390 | ) | 49,489 | |||
| Amortization
      of debt discount | 2,092 | 1,846 | ||||
| Other | (829 | ) | 3,627 | |||
| Changes
      in current assets and liabilities: | ||||||
| Accounts
      receivable | 43,703 | (41,236 | ) | |||
| Refundable
      income taxes | 13,161 | 933 | ||||
| Prepaid
      expenses and other | (5,414 | ) | (336 | ) | ||
| Accounts
      payable and accrued expenses | (20,921 | ) | (5,142 | ) | ||
| Excess
      income tax benefit from the exercise of stock options | - | (860 | ) | |||
| Net
      cash provided by operating activities | 125,175 | 142,683 | ||||
| Cash
      flows from investing activities: | ||||||
| Proceeds
      from sale of oil and gas properties | 1,063 | 130,400 | ||||
| Capital
      expenditures | (133,625 | ) | (161,530 | ) | ||
| Acquisition
      of oil and gas properties | (53 | ) | (53,031 | ) | ||
| Receipts
      from restricted cash | 4,348 | - | ||||
| Other | - | (10,007 | ) | |||
| Net
      cash used in investing activities | (128,267 | ) | (94,168 | ) | ||
| Cash
      flows from financing activities: | ||||||
| Proceeds
      from credit facility | 1,190,000 | 389,000 | ||||
| Repayment
      of credit facility | (1,191,000 | ) | (397,500 | ) | ||
| Excess
      income tax benefit from the exercise of stock options | - | 860 | ||||
| Proceeds
      from sale of common stock | 172 | 328 | ||||
| Repurchase
      of common stock | - | (77,202 | ) | |||
| Net
      cash used in financing activities | (828 | ) | (84,514 | ) | ||
| Net
      change in cash and cash equivalents | (3,920 | ) | (35,999 | ) | ||
| Cash
      and cash equivalents at beginning of period | 6,131 | 43,510 | ||||
| Cash
      and cash equivalents at end of period | $ | 2,211 | $ | 7,511 | ||
| *
      Stock-based compensation expense is a component of exploration expense and
      general and administrative expense on | ||||||
| the
      consolidated statements of operations. For the three months ended
      March 31, 2009, and 2008, respectively, | ||||||
| approximately
      $1.6 million and $1.1 million of stock-based compensation expense was
      included in exploration expense.  For | ||||||
| both
      the three months ended March 31, 2009, and 2008, approximately $2.2
      million of stock-based compensation expense | ||||||
| was
      included in general and administrative expense. | ||||||
| ST.
      MARY LAND & EXPLORATION COMPANY AND SUBSIDIARIES | ||||||
| CONSOLIDATED
      STATEMENTS OF CASH FLOWS (UNAUDITED) (Continued) | ||||||
| Supplemental
      schedule of additional cash flow information and noncash investing and
      financing activities: | ||||||
| For
      the Three Months | ||||||
| Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
| (In
      thousands) | ||||||
| Cash
      paid for interest | $ | 1,509 | $ | 3,616 | ||
| Cash
      paid or (refunded) for income taxes | $ | (10,907 | ) | $ | 2,081 | |
| For
      the period ended March 31, 2008, the Company issued 158,744, restricted
      stock units | ||||||
| to
      employees as equity-based compensation, pursuant to the Company's
      2006 | ||||||
| Equity
      Incentive Compensation Plan. The total fair value of this issuance
      was $6.0 million. | ||||||
| There
      were no restricted stock units issued to employees for the period ended
      March 31, 2009. | ||||||
| As
      of March 31, 2009, and 2008, $76.4 million, and $132.8 million,
      respectively, are included as | ||||||
| additions
      to oil and gas properties and accounts payable and accrued
      expenses. These oil and gas property | ||||||
| additions
      are reflected in cash used in investing activities in the periods that the
      payables are
settled. | ||||||
|  | For
      the Three Months Ended
      March 31, | |||||
| 2009 | 2008 | |||||
| (In
      thousands, except per share amounts) | ||||||
| Net
      income (loss) | $ | (87,623 | ) | $ | 94,974 | |
| Basic
      weighted-average common stock outstanding | 62,335 | 62,861 | ||||
| Add:
      dilutive effect of stock options, unvested RSUs, and PSAs | - | 1,184 | ||||
| Add:
      dilutive effect of 3.50% senior convertible notes | - | - | ||||
| Diluted
      weighted-average common shares outstanding | 62,335 | 64,045 | ||||
| Basic
      net income (loss) per common share | $ | (1.41 | ) | $ | 1.51 | |
| Diluted
      net income (loss) per common share | $ | (1.41 | ) | $ | 1.48 | |
| PSAs | Weighted-Average
      Grant-Date Fair Value | ||||
| Non-vested,
      at January 1, 2009 | 464,333 | $ | 26.48 | ||
| Granted | - | $ | - | ||
| Vested | - | $ | - | ||
| Forfeited | (16,539 | ) | $ | 26.48 | |
| Non-vested,
      at March 31, 2009 | 447,794 | $ | 26.48 | ||
| RSUs | Weighted-Average
      Grant-Date Fair Value | ||||
| Non-vested,
      at January 1, 2009 | 402,297 | $ | 48.24 | ||
| Granted | - | $ | - | ||
| Vested | (118,018 | ) | $ | 34.64 | |
| Forfeited | (10,984 | ) | $ | 53.39 | |
| Non-vested,
      at March 31, 2009 | 273,295 | $ | 53.75 | ||
| Options | Weighted-Average
      Exercise Price | Weighted-Average
      Remaining Contractual Term (In
      years) | Aggregate
      Intrinsic Value (In
      thousands) | |||||||
| Outstanding,
      January 1, 2009 | 1,509,710 | $ | 12.69 | |||||||
| Exercised | (15,502 | ) | $ | 11.21 | ||||||
| Forfeited | - | $ | - | |||||||
| Outstanding,
      March 31, 2009 | 1,494,208 | $ | 12.71 | 3.44 | $ | 2,027 | ||||
| Vested,
      or expect to vest, end of period | 1,494,208 | $ | 12.71 | 3.44 | $ | 2,027 | ||||
| Exercisable,
      end of period | 1,494,208 | $ | 12.71 | 3.44 | $ | 2,027 | ||||
| For
      the Three Months  Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
| (In
      thousands) | ||||||
| General
      and administrative expense (benefit) | $ | (20,694 | ) | $ | 12,247 | |
| Exploration
      expense (benefit) | (2,597 | ) | 1,379 | |||
| Total | $ | (23,291 | ) | $ | 13,626 | |
| For
      the Three Months Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
| (In
      thousands) | ||||||
| Current
      portion of income tax expense: | ||||||
| Federal | $ | 1,083 | $ | 5,881 | ||
| State | 390 | 500 | ||||
| Deferred
      portion of income tax expense (benefit): | (55,389 | ) | 49,489 | |||
| Total
      income tax expense (benefit) | $ | (53,916 | ) | $ | 55,870 | |
| Effective
      tax rates | 38.1 | % | 37.0 | % | ||
| Borrowing
      Base Utilization Grid | ||||
| Borrowing
      Base Utilization Percentage | <25% | >25% <50% | >50% <75% | >75% | 
| Eurodollar
      Loans | 2.000% | 2.250% | 2.500% | 2.750% | 
| ABR
      Loans or Swingline Loans | 1.000% | 1.250% | 1.500% | 1.750% | 
| Commitment
      Fee Rate | 0.500% | 0.500% | 0.500% | 0.500% | 
| December
      31, 2008 | ||||||
| As
      Adjusted | As
      Originally Reported | |||||
| (In
      thousands) | ||||||
| Proved
      oil and gas properties | $ | 2,969,722 | $ | 2,967,491 | ||
| 3.50%
      Senior Convertible Notes | 258,713 | 287,500 | ||||
| Deferred
      income taxes | 354,328 | 358,334 | ||||
| Additional
      paid-in capital | 141,283 | 99,440 | ||||
| Retained
      earnings | 957,200 | 964,019 | ||||
| As
      of March
      31, 2009 | As
      of December
      31, 2008 (Adjusted) | |||||
| (In
      thousands) | ||||||
| 3.50%
      Senior Convertible Notes | $ | 287,500 | $ | 287,500 | ||
| Unamortized
      debt discount | (26,695 | ) | (28,787 | ) | ||
| Net
      carrying amount of the 3.50% Senior Convertible Notes | $ | 260,805 | $ | 258,713 | ||
| For
      the Three Months Ended March
      31, 2008 | |||||||
| As
      Adjusted | As
      Originally Reported | ||||||
| (In
      thousands except per share amounts) | |||||||
| Interest
      expense | $ | 6,593 | $ | 4,971 | |||
| Income
      tax expense | 55,870 | 56,470 | |||||
| Net
      income | 94,974 | 95,996 | |||||
| Basic
      net income per common share | $ | 1.51 | $ | 1.53 | |||
| Diluted
      net income per common share | $ | 1.48 | $ | 1.50 | |||
| Location
      on Consolidated Balance Sheets | Fair
      Value at
      March 31, 2009 | ||||
|  (In
      thousands) | |||||
| Derivative
      assets designated as cash flow hedges: |  | ||||
| Oil,
      natural gas, and NGL commodity | Current
      assets | $ | 119,111 | ||
| Oil,
      natural gas, and NGL commodity | Other
      noncurrent assets | 24,246 | |||
| Total
      derivative assets designated as cash flow hedges under SFAS No.
      133 | $ | 143,357 | |||
| Derivative
      liabilities designated as cash flow hedges: | |||||
| Oil,
      natural gas, and NGL commodity | Current
      liabilities | $ | (1,247 | ) | |
| Oil,
      natural gas, and NGL commodity | Other
      noncurrent liabilities | (18,832 | ) | ||
| Total
      derivative liabilities designated as cash flow hedges under SFAS No.
      133 | $ | (20,079 | ) | ||
| Derivatives
      Qualifying as Cash Flow Hedges | Amount
      of Gain Recognized in OCI on Derivatives (Effective
    Portion) | Location
      of Gain Reclassified from AOCI to Income (Effective
    Portion) | Amount
      of Gain Reclassified from AOCI to Income (Effective
      Portion) | ||||||
|  (In
      thousands) |  (In
      thousands) | ||||||||
|  |  | ||||||||
| Commodity
      hedges | $ | 80,461 | Realized
      oil and gas hedge gain (loss) | $ | 26,550 | ||||
| Derivatives
      Qualifying as Cash Flow Hedges | Location
      of Loss Reclassified from AOCI to Income (Ineffective
    Portion) | Amount
      of Loss Reclassified from AOCI to Income (Ineffective
    Portion) | ||||
|  (In
      thousands) | ||||||
|  | ||||||
| Commodity
      hedges | Unrealized
      derivative loss | $ | 1,846 | |||
| For
      the Three Months Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
| (In
      thousands) | ||||||
| Service
      cost | $ | 625 | $ | 460 | ||
| Interest
      cost | 234 | 222 | ||||
| Expected
      return on plan assets | (108 | ) | (168 | ) | ||
| Amortization
      of net actuarial loss | 93 | 40 | ||||
| Net
      Periodic benefit cost | $ | 844 | $ | 554 | ||
| For
      the Three Months Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
| (In
      thousands) | ||||||
| Beginning
      asset retirement obligation | $ | 116,274 | $ | 108,284 | ||
| Liabilities
      incurred | 356 | 4,029 | ||||
| Liabilities
      settled | (3,006 | ) | (10,597 | ) | ||
| Accretion
      expense | 2,301 | 1,665 | ||||
| Revision
      to estimated cash flow | 2,093 | 600 | ||||
| Ending
      asset retirement obligation | $ | 118,018 | $ | 103,981 | ||
| ●       | Level
      1 – Quoted prices in active markets for identical assets or
      liabilities | 
| ●       | Level
      2 – Quoted prices in active markets for similar assets and liabilities,
      quoted prices for identical or similar instruments in markets that are not
      active, and model-derived valuations whose inputs are observable or whose
      significant value drivers are
observable | 
| ●       | Level
      3 – Significant inputs to the valuation model are
    unobservable | 
| Level
      1 | Level
      2 | Level
      3 | |||||||
| (In
      thousands) | |||||||||
| Assets: | |||||||||
| Accrued
      derivative(a) | $ | - | $ | 143,357 | $ | - | |||
| Proved
      oil and gas properties(b) | $ | - | $ | - | $ | 140,019 | |||
| Liabilities: | |||||||||
| Accrued
      derivative(a) | $ | - | $ | 20,079 | $ | - | |||
| Net
      Profits Plan(a) | $ | - | $ | - | $ | 154,075 | |||
| (a)   | This
      represents a financial asset or liability that is measured at fair value
      on a recurring basis. | 
| (b)   | This
      represents a nonfinancial asset or liability that is measured at fair
      value on a nonrecurring basis effective January 1,
  2009. | 
| Level
      1 | Level
      2 | Level
      3 | |||||||
| (In
      thousands) | |||||||||
| Assets: | |||||||||
| Accrued
      derivative | $ | - | $ | 133,190 | $ | - | |||
| Liabilities: | |||||||||
| Accrued
      derivative | $ | - | $ | 27,920 | $ | - | |||
| Net
      Profits Plan | $ | - | $ | - | $ | 177,366 | |||
| For
      the Three Months Ended
      March 31, 2009 | |||
| (In
      thousands) | |||
| Beginning
      balance | $ | 177,366 | |
| Net
      decrease in liability(a) | (19,653 | ) | |
| Net
      settlements (a)(b) | (3,638 | ) | |
| Transfers
      in (out) of Level 3 | - | ||
| Ending
      balance | $ | 154,075 | |
| (a)   | Net
      changes in the Net Profits Plan liability are shown in the Change in Net
      Profits Plan liability line item of the accompanying consolidated
      statements of operations. | 
| (b)  | Settlements
      represent cash payments made or accrued under the Net Profits
      Plan. | 
| ●       | Acquire
      significant leasehold positions in new and emerging resource
      plays | 
| ●       | Leverage
      our core competencies in drilling and completions, as well as
      acquisitions | 
| ●       | Exploit
      our significant legacy asset production and optimize our asset base
      through divestitures of non-core assets when
  appropriate | 
| ●       | Maintain
      a strong balance sheet while funding the growth of the
      enterprise | 
| For
      the Three Months Ended | |||||||||
| March
      31, 2009 | December
      31, 2008 | March
      31, 2008 | |||||||
| Crude Oil (per Bbl): | |||||||||
| Average
      NYMEX price | $ | 43.08 | $ | 58.74 | $ | 97.90 | |||
| Realized
      price, before the effects of hedging | $ | 34.40 | $ | 50.17 | $ | 92.33 | |||
| Net
      realized price, including the effects of hedging | $ | 44.16 | $ | 55.63 | $ | 76.24 | |||
| Natural Gas (per Mcf): | |||||||||
| Average
      NYMEX price | $ | 4.86 | $ | 6.82 | $ | 8.07 | |||
| Realized
      price, before the effects of hedging | $ | 4.00 | $ | 5.30 | $ | 8.53 | |||
| Net
      realized price, including the effects of hedging | $ | 6.14 | $ | 7.09 | $ | 8.69 | |||
| For
      the Three Months Ended | ||||||||||||
| March
      31, | December
      31, | September
      30, | June
      30, | |||||||||
| 2009 | 2008 | 2008 | 2008 | |||||||||
| (In
      millions, except production sales data) | ||||||||||||
| Production
      (BCFE) | 28.4 | 30.0 | 27.7 | 28.6 | ||||||||
| Oil
      and gas production revenue, excluding the effects of
    hedging | $ | 130.4 | $ | 190.5 | $ | 358.5 | $ | 400.0 | ||||
| Realized
      oil and gas hedge gain (loss) | $ | 55.6 | $ | 44.8 | $ | (53.5 | ) | $ | (68.4 | ) | ||
| Lease
      operating expense | $ | 41.2 | $ | 47.7 | $ | 43.6 | $ | 41.0 | ||||
| Transportation
      costs | $ | 5.5 | $ | 6.1 | $ | 6.6 | $ | 5.6 | ||||
| Production
      taxes | $ | 9.1 | $ | 11.8 | $ | 22.5 | $ | 27.0 | ||||
| DD&A | $ | 91.7 | $ | 95.1 | $ | 72.4 | $ | 76.4 | ||||
| Exploration | $ | 13.6 | $ | 17.7 | $ | 10.7 | $ | 17.4 | ||||
| Impairment
      of proved properties | $ | 147.0 | $ | 292.1 | $ | 0.5 | $ | 9.6 | ||||
| Abandonment
      and impairment of unproved properties | $ | 3.9 | $ | 34.7 | $ | 1.2 | $ | 2.1 | ||||
| Impairment
      of goodwill | $ | - | $ | 9.5 | $ | - | $ | - | ||||
| General
      and administrative expense | $ | 16.4 | $ | 12.4 | $ | 24.1 | $ | 21.9 | ||||
| Bad
      debt expense | $ | - | $ | - | $ | 6.7 | $ | 9.9 | ||||
| Impairment
      of materials inventory | $ | 8.6 | $ | - | $ | - | $ | - | ||||
| Net
      income (loss) | $ | (87.6 | ) | $ | (127.1 | ) | $ | 87.0 | $ | 32.5 | ||
| Percentage change from previous
      quarter: | ||||||||||||
| Production
      (BCFE) | (5)% | 8% | (3)% | 1% | ||||||||
| Oil
      and gas production revenue, excluding the effects of
    hedging | (32)% | (47)% | (10)% | 29% | ||||||||
| Realized
      oil and gas hedge gain (loss) | 24% | (184)% | (22)% | 185% | ||||||||
| Lease
      operating expense | (14)% | 9% | 6% | 17% | ||||||||
| Transportation
      costs | (10)% | (8)% | 18% | 44% | ||||||||
| Production
      taxes | (23)% | (48)% | (17)% | 32% | ||||||||
| DD&A | (4)% | 31% | (5)% | 9% | ||||||||
| Exploration | (23)% | 65% | (39)% | 22% | ||||||||
| Impairment
      of proved properties | (50)% | N/M | (95)% | N/A | ||||||||
| Abandonment
      and impairment of unproved properties | (89)% | N/M | (43)% | 110% | ||||||||
| Impairment
      of goodwill | (100)% | N/A | N/A | N/A | ||||||||
| General
      and administrative expense | 32% | (49)% | 10% | 4% | ||||||||
| Bad
      debt expense | N/A | (100)% | (33)% | N/A | ||||||||
| Impairment
      of materials inventory | N/A | N/A | N/A | N/A | ||||||||
| Net
      income (loss) | (31)% | (246)% | 168% | (66)% | ||||||||
| Mid- Continent | ArkLaTex | Gulf
      Coast | Permian | Rocky Mountain | Total
      (1) | |||||||
| First
      Quarter 2009 Production: | ||||||||||||
| Oil
      (MBbl) | 73.6 | 35.5 | 92.4 | 509.5 | 928.8 | 1,639.8 | ||||||
| Gas
      (MMcf) | 8,695.9 | 4,076.5 | 1,936.4 | 986.5 | 2,819.7 | 18,515.1 | ||||||
| Equivalent
      (MMCFE) | 9,137.6 | 4,289.8 | 2,490.7 | 4,043.3 | 8,392.3 | 28,353.7 | ||||||
| Avg.
      Daily Equivalents (MMCFE/d) | 101.5 | 47.7 | 27.7 | 44.9 | 93.2 | 315.0 | ||||||
| Relative
      percentage | 32% | 15% | 9% | 14% | 30% | 100% | 
| (1)   | Totals
      may not add due to rounding | 
| Selected
      Operations Data (In thousands, except sales price, volume, and per MCFE
      amounts): | ||||||||
| For
      the Three Months Ended
      March 31, | Percent Change Between Periods | |||||||
| 2009 | 2008 | |||||||
| Net production volumes | ||||||||
| Oil
      (MBbl) | 1,640 | 1,667 | (2)% | |||||
| Natural
      gas (MMcf) | 18,515 | 18,342 | 1% | |||||
| MMCFE
      (6:1) | 28,354 | 28,347 | -% | |||||
| Average daily production | ||||||||
| Oil
      (Bbl per day) | 18,220 | 18,323 | (1)% | |||||
| Natural
      gas (Mcf per day) | 205,724 | 201,565 | 2% | |||||
| MCFE
      per day (6:1) | 315,041 | 311,503 | 1% | |||||
| Oil
      & gas production revenues (1) | ||||||||
| Oil
      production revenue | $ | 72,412 | $ | 127,127 | (43)% | |||
| Gas
      production revenue | 113,625 | 159,355 | (29)% | |||||
| Total | $ | 186,037 | $ | 286,482 | (35)% | |||
| Oil & gas production
      expense | ||||||||
| Lease
      operating expense | $ | 41,248 | $ | 35,105 | 17% | |||
| Transportation
      costs | 5,459 | 3,877 | 41% | |||||
| Production
      taxes | 9,122 | 20,494 | (55)% | |||||
| Total | $ | 55,829 | $ | 59,476 | (6)% | |||
| Average
      realized sales price (1) | ||||||||
| Oil
      (per Bbl) | $ | 44.16 | $ | 76.24 | (42)% | |||
| Natural
      gas (per Mcf) | $ | 6.14 | $ | 8.69 | (29)% | |||
| Per MCFE Data: | ||||||||
| Average
      net realized price (1) | $ | 6.56 | $ | 10.11 | (35)% | |||
| Lease
      operating expenses | (1.45 | ) | (1.24 | ) | 17% | |||
| Transportation
      costs | (0.19 | ) | (0.14 | ) | 36% | |||
| Production
      taxes | (0.32 | ) | (0.72 | ) | (56)% | |||
| General
      and administrative | (0.57 | ) | (0.75 | ) | (24)% | |||
| Operating
      margin | $ | 4.03 | $ | 7.26 | (44)% | |||
| Depletion,
      depreciation, amortization, and asset
      retirement obligation liability accretion | $ | 3.23 | $ | 2.48 | 30% | |||
| (1)   | Includes
      the effects of hedging activities | 
| Financial
      Information (In thousands, except per share amounts): | ||||||||
| March
      31, 2009 | December
      31, 2008 | Percent Change Between Periods | ||||||
| Working
      capital | $ | 14,302 | $ | 15,193 | (6)% | |||
| Long-term
      debt | $ | 559,805 | $ | 558,713 | -% | |||
| Stockholders’
      equity | $ | 1,084,876 | $ | 1,162,509 | (7)% | |||
| For
      the Three Months Ended
      March 31, | Percent Change | |||||||
| 2009 | 2008 | Between Periods | ||||||
| Basic
      net income (loss) per common share | $ | (1.41 | ) | $ | 1.51 | (193)% | ||
| Diluted
      net income (loss) per common share | $ | (1.41 | ) | $ | 1.48 | (195)% | ||
| Basic
      weighted-average shares outstanding | 62,335 | 62,861 | -% | |||||
| Diluted
      weighted-average shares outstanding | 62,335 | 64,045 | (3)% | |||||
| For
      the Three Months Ended
      March 31, | Percent | ||||||||||
| 2009 | 2008 | Change | Change | ||||||||
| (In
      thousands) | |||||||||||
| Net
      cash provided by operating activities | $ | 125,175 | $ | 142,683 | $ | (17,508 | ) | (12)% | |||
| Net
      cash used in investing activities | $ | 128,267 | $ | 94,168 | $ | 34,099 | 36% | ||||
| Net
      cash used in financing activities | $ | 828 | $ | 84,514 | $ | (83,686 | ) | (99)% | |||
| For
      the Three Months Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
| (In
      thousands) | ||||||
| Development
      costs (1) | $ | 73,763 | $ | 156,706 | ||
| Exploration
      costs | 21,630 | 32,619 | ||||
| Acquisitions | ||||||
| Proved
      properties | 53 | 31,261 | ||||
| Unproved
      properties – acquisitions of proved properties (2) | - | 22,196 | ||||
| Unproved
      properties - other | 9,369 | 3,739 | ||||
| Total,
      including asset retirement obligations (3) | $ | 104,815 | $ | 246,521 | ||
| (1)   | Includes
      capitalized interest of $470,000 in 2009 and $1.4 million in
      2008. | 
| (2)   | Represents
      a portion of the allocated purchase price of unproved properties acquired
      as part of the acquisition of proved
properties. | 
|  (3) | Includes
      amounts relating to estimated asset retirement obligations of $356,000 in
      2009 and $4.0 million in
2008. | 
| Oil Swaps | ||||||||
| Contract Period | Volumes | Weighted- Average Contract Price | Fair
      Value at March
      31, 2009 Asset/(Liability) | |||||
| (Bbl) | (per
      Bbl) | (In
      thousands) | ||||||
| Second
      quarter 2009 - | ||||||||
| NYMEX
      WTI | 401,000 | $ | 71.65 | $ | 7,926 | |||
| Third
      quarter 2009 - | ||||||||
| NYMEX
      WTI | 389,000 | $ | 71.59 | 6,274 | ||||
| Fourth
      quarter 2009 - | ||||||||
| NYMEX
      WTI | 369,000 | $ | 71.67 | 4,938 | ||||
| 2010 | ||||||||
| NYMEX
      WTI | 1,239,000 | $ | 66.47 | 4,511 | ||||
| 2011 | ||||||||
| NYMEX
      WTI | 1,032,000 | $ | 65.36 | (1,970 | ) | |||
| All
      oil swaps | 3,430,000 | $ | 21,679 | |||||
| Oil Collars | |||||||||||
| Contract Period | NYMEX
      WTI Volumes | Weighted- Average Floor Price | Weighted- Average Ceiling Price | Fair
      Value at March
      31, 2009 Asset/(Liability) | |||||||
| (Bbl) | (per
      Bbl) | (per
      Bbl) | (In
      thousands) | ||||||||
| Second
      quarter 2009 | 380,500 | $ | 50.00 | $ | 67.31 | $ | 1,001 | ||||
| Third
      quarter 2009 | 384,500 | $ | 50.00 | $ | 67.31 | 630 | |||||
| Fourth
      quarter 2009 | 384,500 | $ | 50.00 | $ | 67.31 | 31 | |||||
| 2010 | 1,367,500 | $ | 50.00 | $ | 64.91 | (5,785 | ) | ||||
| 2011 | 1,236,000 | $ | 50.00 | $ | 63.70 | (10,719 | ) | ||||
| All
      oil collars | 3,753,000 | $ | (14,842 | ) | |||||||
| Gas Swaps | ||||||||
| Contract Period | Volumes | Weighted- Average Contract Price | Fair
      Value at March
      31, 2009 Asset | |||||
| (MMBtu) | (per
      MMBtu) | (In
      thousands) | ||||||
| Second
      quarter 2009 | ||||||||
| IF
      ANR OK | 570,000 | $ | 7.47 | $ | 2,625 | |||
| IF
      CIG | 930,000 | $ | 7.11 | 4,302 | ||||
| IF
      EL PASO | 300,000 | $ | 6.64 | 1,127 | ||||
| IF
      HSC | 2,700,000 | $ | 8.09 | 11,993 | ||||
| IF
      NGPL | 120,000 | $ | 6.63 | 453 | ||||
| IF
      PEPL | 1,500,000 | $ | 7.17 | 6,579 | ||||
| NYMEX
      Henry Hub | 300,000 | $ | 8.47 | 1,404 | ||||
| Third
      quarter 2009 | ||||||||
| IF
      ANR OK | 100,000 | $ | 7.11 | 355 | ||||
| IF
      CIG | 300,000 | $ | 6.64 | 1,122 | ||||
| IF
      EL PASO | 300,000 | $ | 6.94 | 1,022 | ||||
| IF
      HSC | 2,680,000 | $ | 8.25 | 11,387 | ||||
| IF
      NGPL | 100,000 | $ | 6.86 | 330 | ||||
| IF
      PEPL | 360,000 | $ | 7.47 | 1,429 | ||||
| IF
      RELIANT | 510,000 | $ | 3.84 | 130 | ||||
| NYMEX
      Henry Hub | 420,000 | $ | 7.76 | 1,496 | ||||
| Fourth
      quarter 2009 | ||||||||
| IF
      ANR OK | 90,000 | $ | 7.43 | 301 | ||||
| IF
      CIG | 150,000 | $ | 7.42 | 578 | ||||
| IF
      EL PASO | 300,000 | $ | 7.01 | 937 | ||||
| IF
      HSC | 2,620,000 | $ | 8.60 | 10,591 | ||||
| IF
      NGPL | 90,000 | $ | 7.14 | 280 | ||||
| IF
      RELIANT | 810,000 | $ | 4.34 | 267 | ||||
| NYMEX
      Henry Hub | 710,000 | $ | 7.18 | 1,551 | ||||
| 2010 | ||||||||
| IF
      ANR OK | 60,000 | $ | 7.98 | 167 | ||||
| IF
      EL PASO | 1,090,000 | $ | 6.79 | 1,688 | ||||
| IF
      HSC | 6,080,000 | $ | 8.40 | 17,010 | ||||
| IF
      NGPL | 990,000 | $ | 5.51 | 270 | ||||
| IF
      RELIANT | 4,200,000 | $ | 5.32 | 506 | ||||
| NYMEX
      Henry Hub | 3,750,000 | $ | 7.13 | 4,385 | ||||
| 2011 | ||||||||
| IF
      EL PASO | 880,000 | $ | 6.34 | 488 | ||||
| IF
      HSC | 360,000 | $ | 9.01 | 827 | ||||
| IF
      NGPL | 480,000 | $ | 5.98 | 9 | ||||
| IF
      RELIANT | 1,860,000 | $ | 5.96 | 73 | ||||
| NYMEX
      Henry Hub | 2,130,000 | $ | 6.72 | 199 | ||||
| All
      gas swap contracts | 37,840,000 | $ | 85,883 | |||||
| Gas Collars | |||||||||||
| Contract Period | Volumes | Weighted- Average Floor Price | Weighted- Average Ceiling Price | Fair
      Value at March
      31, 2009 Asset/(Liability) | |||||||
| (MMBtu) | (per
      MMBtu) | (per
      MMBtu) | (In
      thousands) | ||||||||
| Second
      quarter 2009 | |||||||||||
| IF
      CIG | 600,000 | $ | 4.75 | $ | 8.82 | $ | 1,364 | ||||
| IF
      HSC | 210,000 | $ | 5.57 | $ | 9.49 | 408 | |||||
| IF
      PEPL | 1,375,000 | $ | 5.30 | $ | 9.25 | 3,472 | |||||
| NYMEX
      Henry Hub | 90,000 | $ | 6.00 | $ | 10.35 | 191 | |||||
| Third
      quarter 2009 | |||||||||||
| IF
      CIG | 600,000 | $ | 4.75 | $ | 8.82 | 1,135 | |||||
| IF
      HSC | 210,000 | $ | 5.57 | $ | 9.49 | 364 | |||||
| IF
      PEPL | 1,385,000 | $ | 5.30 | $ | 9.25 | 2,642 | |||||
| NYMEX
      Henry Hub | 90,000 | $ | 6.00 | $ | 10.35 | 175 | |||||
| Fourth
      quarter 2009 | |||||||||||
| IF
      CIG | 600,000 | $ | 4.75 | $ | 8.82 | 889 | |||||
| IF
      HSC | 210,000 | $ | 5.57 | $ | 9.49 | 299 | |||||
| IF
      PEPL | 1,385,000 | $ | 5.30 | $ | 9.25 | 2,224 | |||||
| NYMEX
      Henry Hub | 90,000 | $ | 6.00 | $ | 10.35 | 130 | |||||
| 2010 | |||||||||||
| IF
      CIG | 2,040,000 | $ | 4.85 | $ | 7.08 | 1,311 | |||||
| IF
      HSC | 600,000 | $ | 5.57 | $ | 7.88 | 337 | |||||
| IF
      PEPL | 4,945,000 | $ | 5.31 | $ | 7.61 | 3,402 | |||||
| NYMEX
      Henry Hub | 240,000 | $ | 6.00 | $ | 8.38 | 154 | |||||
| 2011 | |||||||||||
| IF
      CIG | 1,800,000 | $ | 5.00 | $ | 6.32 | (11 | ) | ||||
| IF
      HSC | 480,000 | $ | 5.57 | $ | 6.77 | (127 | ) | ||||
| IF
      PEPL | 4,225,000 | $ | 5.31 | $ | 6.51 | (468 | ) | ||||
| NYMEX
      Henry Hub | 120,000 | $ | 6.00 | $ | 7.25 | (20 | ) | ||||
| All
      gas collars | 21,295,000 | $ | 17,871 | ||||||||
| Natural Gas Liquid Swaps | ||||||||
| Contract Period | Volumes | Weighted- Average Contract Price | Fair
      Value at March
      31, 2009 Asset | |||||
| (Bbls) | (per
      Bbl) | (In
      thousands) | ||||||
| Second
      quarter 2009 | 262,000 | $ | 41.53 | $ | 4,342 | |||
| Third
      quarter 2009 | 218,000 | $ | 41.46 | 3,387 | ||||
| Fourth
      quarter 2009 | 70,000 | $ | 45.95 | 1,363 | ||||
| 2010 | 140,000 | $ | 49.59 | 3,207 | ||||
| 2011 | 20,000 | $ | 49.01 | 388 | ||||
| All
      natural gas liquid swaps | 710,000 | $ | 12,687 | |||||
| Change
      Between the Three
      Months Ended March
      31, 2009, and
      2008 | |||
| Oil and gas production
    revenues | |||
| Decrease
      in oil and gas production revenues,net of hedging (In
      thousands) | $ | 100,445 | 
| Oil | |||
| Net
      realized price change per Bbl, including the effects of
      hedging | $ | (32.08) | |
| Net
      realized price percentage change | (42)% | ||
| Production
      change (MBbl) | (27) | ||
| Production
      percentage change | (2)% | ||
| Natural Gas | |||
| Net
      realized price change per Mcf, including the effects of
      hedging | $ | (2.55) | |
| Net
      realized price percentage change | (29)% | ||
| Production
      change (MMcf) | 173 | ||
| Production
      percentage change | 1% | ||
| For
      the Three Months Ended
      March 31, | ||||
| Revenue | 2009 | 2008 | ||
| Oil | 39% | 44% | ||
| Natural
      gas | 61% | 56% | ||
| Production | ||||
| Oil | 35% | 35% | ||
| Natural
      gas | 65% | 65% | ||
| For
      the Three Months Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
| Summary of Exploration
    Expense | ||||||
| Geological
      and geophysical expenses | $ | 4.4 | $ | 1.8 | ||
| Exploratory
      dry hole expense | 0.1 | 0.7 | ||||
| Overhead
      and other expenses | 9.1 | 11.8 | ||||
| Total | $ | 13.6 | $ | 14.3 | ||
| For
      the Three Months Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
| Oil Hedging | ||||||
| Percentage
      of oil production hedged (MBbl) | 48% | 57% | ||||
| Oil
      volumes hedged (MBbl) | 788 | 953 | ||||
| Increase
      (decrease) in oil revenue | $ | 16.0
      millionn | $ | (26.8
      million) | ||
| Average
      realized oil price per Bbl before hedging | $ | 34.40 | $ | 92.33 | ||
| Average
      realized oil price per Bbl after hedging | $ | 44.16 | $ | 76.24 | ||
| Natural Gas Hedging | ||||||
| Percentage
      of gas production hedged (MMBtu) | 48% | 39% | ||||
| Natural
      gas volumes hedged (MMBtu) | $ | 9.4
      million | $ | 7.5
      million | ||
| Increase
      in gas revenue | $ | 39.6
      millionn | $ | 2.9
      million | ||
| Average
      realized gas price per Mcf before hedging | $ | 4.00 | $ | 8.53 | ||
| Average
      realized gas price per Mcf after hedging | $ | 6.14 | $ | 8.69 | ||
| Average
      Net Daily Production Added
      (Lost) | Pre-Hedge
      Oil and Gas Revenues Lost | Production
      Costs Increase (Decrease) | ||||||
| (MMCFE) | (In
      millions) | (In
      millions) | ||||||
| Mid-Continent | 12.1 | $ | 38.4 | $ | (1.7 | ) | ||
| ArkLaTex | (1.6 | ) | 20.8 | 1.8 | ||||
| Gulf
      Coast | (14.3 | ) | 25.3 | (2.6 | ) | |||
| Permian | 9.5 | 25.5 | 0.5 | |||||
| Rocky
      Mountain | (2.2 | ) | 70.0 | (1.6 | ) | |||
| Total | 3.5 | $ | 180.0 | $ | (3.6 | ) | ||
| For
      the Three Months Ended
      March 31, | ||||||
| 2009 | 2008 | |||||
| Realized
      oil price ($/Bbl) | $ | 34.40 | $ | 92.33 | ||
| Realized
      gas price ($/Mcf) | $ | 4.00 | $ | 8.53 | ||
| Realized
      equivalent price ($/MCFE) | $ | 4.60 | $ | 10.95 | ||
| ●       | A
      $0.40 decrease in production taxes on a per MCFE basis due to the decrease
      in realized prices between periods, particularly in the oil-weighted Rocky
      Mountain and Permian Basin regions | 
| ●       | A
      $0.21 increase in recurring LOE on a per MCFE basis related to higher
      costs, particularly in oil-weighted regions, for items such as fuel and
      fluid disposal, as well as in the ArkLaTex
  region | 
| ●       | A
      $0.05 increase in overall transportation cost on a per MCFE basis driven
      by an increase in additional transportation costs incurred on our
      non-operated properties located in the Rocky Mountain
    region | 
| ●       | Overall
      workover LOE on a per MCFE basis was essentially flat from period to
      period. | 
| ●      | The
      amount and nature of future capital expenditures and the availability of
      liquidity and capital resources to fund capital
    expenditures | 
| ●      | The
      drilling of wells and other exploration and development activities and
      plans, as well as possible future
acquisitions | 
| ●      | Reserve
      estimates and the estimates of both future net revenues and the present
      value of future net revenues that are included in their
      calculation | 
| ●      | Future
      oil and natural gas production
estimates | 
| ●      | Our
      outlook on future oil and natural gas prices and service
    costs | 
| ●      | Cash
      flows, anticipated liquidity, and the future repayment of
    debt | 
| ●      | Business
      strategies and other plans and objectives for future operations, including
      plans for expansion and growth of operations or to defer capital
      investment, and our outlook on our future financial condition or results
      of operations | 
| ●      | Other
      similar matters such as those discussed in the “Management’s Discussion
      and Analysis of Financial Condition and Results of Operations” section of
      this Form 10-Q. | 
| ●      | The
      volatility and level of realized oil and natural gas
  prices | 
| ●      | A
      contraction in demand for oil and natural gas as a result of adverse
      general economic conditions | 
| ●      | The
      availability of economically attractive exploration, development, and
      property acquisition opportunities and any necessary financing, including
      constraints on the availability of opportunities and financing due to
      currently distressed capital and credit market
  conditions | 
| ●      | Our
      ability to replace reserves and sustain
  production | 
| ●      | Unexpected
      drilling conditions and results | 
| ●      | Unsuccessful
      exploration and development
drilling | 
| ●      | The
      risks of hedging strategies, including the possibility of realizing lower
      prices on oil and gas sales as a result of commodity price risk management
      activities | 
| ●      | The
      uncertain nature of the expected benefits from acquisitions and
      divestitures of oil and natural gas properties, including uncertainties in
      evaluating oil and natural gas reserves of acquired properties and
      associated potential liabilities | 
| ●      | The
      imprecise nature of oil and natural gas reserve
  estimates | 
| ●      | Uncertainties
      inherent in projecting future rates of production from drilling activities
      and acquisitions | 
| ●      | Declines
      in the values of our oil and natural gas properties resulting in
      impairment charges and write-downs | 
| ●      | The
      ability of purchasers of production to pay for amounts
      purchased | 
| ●      | Drilling
      and operating service availability | 
| ●      | Uncertainties
      in cash flow | 
| ●      | The
      financial strength of hedge contract counterparties and credit facility
      participants, and the risk that one or more of these parties may not
      satisfy their contractual
commitments | 
| ●      | The
      negative impact that lower oil and natural gas prices could have on our
      ability to borrow and fund capital
expenditures | 
| ●      | The
      potential effects of increased levels of debt
  financing | 
| ●      | Our
      ability to compete effectively against other independent and major oil and
      natural gas companies and | 
| ●      | Litigation,
      environmental matters, the potential impact of government regulations, and
      the use of management estimates. | 
|            
      (c) | The
      following table provides information about purchases by the Company or any
      “affiliated purchaser” (as defined in Rule 10b-18(a)(3) under the Exchange
      Act) during the fiscal quarter ended March 31, 2009, of shares of the
      Company’s common stock, which is the sole class of equity securities
      registered by the Company pursuant to Section 12 of the Exchange
      Act. | 
| Period | (a) Total
      Number  of
      Shares  Purchased (1)
      (2)(3)(4) | (b) Average
      Price  Paid
      per Share | (c) Total
      Number  of
      Shares  Purchased
      as  Part
      of Publicly Announced Program | (d) Maximum
       Number
      of  Shares
      that May  Yet
      Be  Purchased
      Under the Program (5) | |
| 01/01/09
      – 01/31/09 | 747 | $ | 20.29 | -0- | 3,072,184 | 
| 02/01/09
      –  02/28/09 | 53,200 | $ | 13.62 | -0- | 3,072,184 | 
| 03/01/09
      –  03/31/09 | 4,741 | $ | 12.28 | -0- | 3,072,184 | 
| Total: | 58,688 | $ | 13.60 | -0- | 3,072,184 | 
| Exhibit | Description | 
| 10.1 | Third
      Amended and Restated Credit Agreement dated April 14, 2009 among
      St. Mary Land & Exploration Company, Wachovia Bank, National
      Association, as Administrative Agent, and the Lenders party thereto (filed
      as Exhibit 10.1 to the registrant’s Current Report on Form 8-K filed on
      April 20, 2009, and incorporated herein by
      reference) | 
| 10.2 | Supplement
      and Amendment to Deed of Trust, Mortgage, Line of Credit Mortgage,
      Assignment, Security Agreement, Fixture Filing and Financing Statement for
      the benefit of Wachovia Bank, National Association, as Administrative
      Agent, dated effective as of April 14, 2009 (filed as Exhibit
      10.2 to the registrant’s Current Report on Form 8-K filed on
      April 20, 2009, and incorporated herein by
      reference) | 
| 10.3 | Deed
      of Trust to Wachovia Bank, National Association, as Administrative Agent,
      dated effective as of April 14, 2009 (filed as Exhibit 10.3 to
      the registrant’s Current Report on Form 8-K filed on
      April 20, 2009, and incorporated herein by
      reference) | 
| 31.1* | Certification
      of Chief Executive Officer pursuant to Section 302 of the Sarbanes – Oxley
      Act of 2002 | 
| 31.2* | Certification
      of Chief Financial Officer pursuant to Section 302 of the Sarbanes – Oxley
      Act of 2002 | 
| 32.1** | Certification
      pursuant to U.S.C. Section 1350 as adopted pursuant to Section 906 of the
      Sarbanes – Oxley Act of
2002 | 
| May
      4, 2009 | By:   
       | /s/ ANTHONY J.
      BEST                                                                 | 
| Anthony
      J. Best | ||
| President
      and Chief Executive Officer | ||
| May
      4, 2009 | By:   
       | /s/ A. WADE
      PURSELL                                                       | 
| A.
      Wade Pursell | ||
| Executive
      Vice President and Chief Financial | ||
| Officer | ||
| May
      4, 2009 | By:   
       | /s/ MARK T.
      SOLOMON                                                       | 
| Mark
      T. Solomon | ||
| Controller |