<Page> SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2001 OR TRANSITION REPORT PURSUANT TO SECTION 16(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ___________ to ___________ Commission file number 1-7792 A. Full title of the plan and the address of the plan, if different from that of the issuer name below: TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY B. Name of issuer of the securities held pursuant to the plan of the address of its principal executive office: POGO PRODUCING COMPANY 5 GREENWAY PLAZA, SUITE 2700 HOUSTON, TEXAS 77046 <Page> Item 4.(a) Financial Statements and Schedules prepared in accordance with the financial reporting requirements of ERISA. TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY Financial Statements and Supplemental Schedule December 31, 2001 and 2000 <Page> TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY TABLE OF CONTENTS DECEMBER 31, 2001 AND 2000 - -------------------------------------------------------------------------------- <Table> <Caption> PAGE Reports of Independent Accountants 1 Financial Statements: Statement of Net Assets Available for Benefits December 31, 2001 and 2000 2 Statement of Changes in Net Assets Available for Benefits Year Ended December 31, 2001 3 Notes to Financial Statements 4-8 Supplemental Schedule: Schedule of Assets (Held at End of Year) December 31, 2001 9 </Table> ALL OTHER SCHEDULES REQUIRED BY SECTION 2520.103-10 OF THE DEPARTMENT OF LABOR'S RULES AND REGULATIONS FOR REPORTING AND DISCLOSURE UNDER ERISA HAVE BEEN OMITTED BECAUSE THEY ARE NOT APPLICABLE OR THE INFORMATION REQUIRED IS DISCLOSED IN THE FINANCIAL STATEMENTS AND NOTES THERETO. <Page> REPORT OF INDEPENDENT ACCOUNTANTS To the Executive Committee of Tax-Advantaged Savings Plan of Pogo Producing Company In our opinion, the accompanying statement of net assets available for benefits and the related statement of changes in net assets available for benefits present fairly, in all material respects, the net assets available for benefits of Tax-Advantaged Savings Plan of Pogo Producing Company (the Plan) at December 31, 2001 and the changes in net assets available for benefits for the year then ended in conformity with accounting principles generally accepted in the United States of America. These financial statements are the responsibility of the Plan's management; our responsibility is to express an opinion on these financial statements based on our audit. We conducted our audit of these statements in accordance with auditing standards generally accepted in the United States of America, which require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion. The financial statements of the Plan as of December 31, 2000 and for the year then ended were audited by other auditors whose report, dated May 31, 2001, expressed an unqualified opinion on those statements. Our audit was conducted for the purpose of forming an opinion on the basic financial statements taken as a whole. The supplemental schedule of assets held at end of year as of December 31, 2001 is presented for the purpose of additional analysis and is not a required part of the basic financial statements but is supplementary information required by the Department of Labor's Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. The supplemental schedule is the responsibility of the Plan's management. The supplemental schedule has been subjected to the auditing procedures applied in the audit of the basic financial statements and, in our opinion, is <Page> fairly stated in all material respects in relation to the basic financial statements taken as a whole. /s/ PricewaterhouseCoopers LLP June 26, 2002 Houston, Texas <Page> This report is a copy of a report previously issued by Arthur Andersen LLP on the Plan's statements of net assets available for plan benefits as of December 31, 2000 and 1999 and the related statements of changes in net assets available for plan benefits for the year then ended. Such report has not been reissued by Arthur Andersen LLP in connection with the Company's current Form 11-K filing. Note that only the statement of net assets available for plan benefits as of December 31, 2000 covered by the report below is included in the accompanying financial statements. REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS To the Administrative Board, Tax-Advantaged Savings Plan of Pogo Producing Company: We have audited the accompanying statements of net assets available for plan benefits of the Tax-Advantaged Savings Plan of Pogo Producing Company (the Plan) as of December 31, 2000 and 1999, and the related statements of changes in net assets available for plan benefits for the years then ended. These financial statements and the supplemental schedules referred to below are the responsibility of the administrative board of the Plan. Our responsibility is to express an opinion on these financial statements and supplemental schedules based on our audits. We conducted our audits in accordance with auditing standards generally accepted in the United States. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements referred to above present fairly, in all material respects, the net assets available for plan benefits as of December 31, 2000 and 1999, and the changes in its net assets available for plan benefits for the years then ended in conformity with accounting principles generally accepted in the United States. Our audits were made for the purpose of forming an opinion on the basic financial statements taken as a whole. The supplemental schedules of assets held at end of year as of December 31, 2000, and reportable transactions for the year then ended are presented for purposes of additional analysis and are not a required part of the basic financial statements but are supplementary information required by the Department of Labor's Rules and Regulations for Reporting and <Page> Disclosure under the Employee Retirement Income Security Act of 1974. The supplemental schedules have been subjected to the auditing procedures applied in the audits of the basic financial statements and, in our opinion, are fairly stated in all material respects in relation to the basic financial statements taken as a whole. /s/ ARTHUR ANDERSEN LLP Houston, Texas May 31, 2001 <Page> TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS DECEMBER 31, 2001 AND 2000 - -------------------------------------------------------------------------------- <Table> <Caption> 2001 2000 Investments, at quoted market value $18,469,374 $19,027,802 Contributions receivable: Participant 73,442 54,130 Company 51,327 37,743 Cash 1,000 1,000 ----------- ----------- Net assets available for benefits $18,595,143 $19,120,675 =========== =========== </Table> The accompanying notes are an integral part of these financial statements. - 2 - <Page> TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS YEAR ENDED DECEMBER 31, 2001 - -------------------------------------------------------------------------------- <Table> <Caption> 2001 Interest/dividend income $ 297,030 Net depreciation in market value of investments (2,452,552) Other (5,044) Contributions: Participant 1,275,005 Company 1,013,669 ----------- Total contributions 2,288,674 Benefits paid (653,640) ----------- Decrease in net assets available for plan benefits (525,532) Net assets available for plan benefits: Beginning of year 19,120,675 ----------- End of year $18,595,143 =========== </Table> The accompanying notes are an integral part of these financial statements. - 3 - <Page> TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 2001 AND 2000 - -------------------------------------------------------------------------------- 1. DESCRIPTION OF PLAN GENERAL Pogo Producing Company (Pogo) adopted the Employees Stock Purchase Plan effective January 1, 1978, as amended July 10, 1981. On January 1, 1985, the Employees Stock Purchase Plan was amended and renamed the Tax-Advantaged Savings Plan (the Plan). Any full-time active employee of Pogo is eligible to be a participant of the Plan on the first day of the calendar quarter following employment. John 0. McCoy, Jr., an officer of Pogo, serves as trustee of the Plan. The Plan is administered by an administrative board appointed by Pogo's board of directors. The members of the administrative board receive no compensation for their services, and all expenses of the Plan, including brokerage commissions, are paid by Pogo. INVESTMENTS The investment options include Pogo common stock, the Prime Portfolio Money Market Fund, the Investment-Grade Corporate Portfolio Bond Fund, the Vanguard Wellington Income Fund, the Vanguard Index Trust - 500 Portfolio and the Vanguard PrimeCap Fund. All such investments are stated at market value based on quoted market prices. CONTRIBUTIONS Each participant may contribute up to 10 percent of his compensation to the Plan. In accordance with provisions of the Internal Revenue Code of 1986, as amended (the IRC), each participant's contributions are subject to certain limitations. This limitation was $10,500 for 2001 and 2000. Pogo contributes an amount equal to each participant's contribution, limited to a maximum of 6 percent of the participant's eligible compensation. Each participant's account is credited with his or her contribution, the company-matching contribution and an allocation of Plan earnings. Allocations of earnings by investment are based on the proportion that each participant's account balance bears to the total of all participant account balances in that investment. Matching funds contributed to the Plan by Pogo are invested only in Pogo common stock. VESTING Participants are entitled to receive the portion of the Plan equity which represents their individual contribution. The Plan allows participants to be fully vested in the portion of the Plan represented by Pogo contributions after two full years - 4 - <Page> TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 2001 AND 2000 - -------------------------------------------------------------------------------- of employment with the company. Participants are immediately fully vested in their own contributions. In the event of death, retirement, disability or termination after vesting, a participant is entitled to all of his portion of the Plan equity applicable to Pogo's contributions. FORFEITURES A participant terminated for reasons other than death, retirement or disability forfeits the unvested portion of his Plan equity attributable to Pogo's contribution, and such forfeiture is held in suspense for one year. If the participant returns to employment prior to incurring a one-year break in service, his unvested share of Pogo matching contributions is not forfeited. If the participant is not reemployed prior to incurring a one-year break in service, his unvested share of Pogo matching contributions is forfeited and used to reduce future contributions by Pogo. At December 31, 2001, there were no shares of Pogo's common stock forfeited and held in suspense. At December 31, 2000, there were 560 shares of Pogo common stock forfeited and held in suspense. TERMINATION OF THE PLAN The Plan may be terminated, amended or modified by Pogo's board of directors at any time. In the event the Plan is terminated, all participants become vested and entitled to receive the Plan equity attributable to all contributions made by Pogo on behalf of the participants. 2. SUMMARY OF ACCOUNTING POLICIES BASIS OF ACCOUNTING The records of the Plan are maintained on the cash basis of accounting and are adjusted to the accrual basis for financial reporting purposes, except for benefits which are reported on the cash basis. Quoted market prices as of the last trading day of the Plan year have been used to determine the market value of Plan investments. USE OF ESTIMATES The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to use estimates and assumptions that affect the accompanying financial statements and disclosures. Actual results could differ from those estimates. - 5 - <Page> TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 2001 AND 2000 - -------------------------------------------------------------------------------- 3. RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500 The following is a reconciliation of net assets available for Plan benefits from the financial statements to the Form 5500: <Table> <Caption> DECEMBER 31, ------------------------- 2001 2000 Net assets available for Plan benefits per the financial statements $18,595,143 $19,120,675 Less: Amounts allocated to withdrawing participants (17,346) (382,088) ----------- ----------- Net assets available for Plan benefits per the Form 5500 $18,577,797 $18,738,587 =========== =========== </Table> The following is a reconciliation of benefits paid from the financial statements to the Form 5500: <Table> <Caption> December 31, 2001 Benefits paid per the financial statements $ 653,640 Add: Amounts allocated to withdrawing participants at December 31, 2001 17,346 Less: Amounts allocated to withdrawing participants at December 31, 2000 (382,088) --------- Benefits paid per the Form 5500 $ 288,898 ========= </Table> Amounts allocated to withdrawing participants are recorded on the Form 5500 for withdrawals that have been processed and approved for payment prior to December 31 but not yet paid as of that date. - 6 - <Page> TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 2001 AND 2000 - -------------------------------------------------------------------------------- 4. INVESTMENTS The following table details investments at market value. Investments representing five percent or more of the Plan's net assets in either year are separately identified by an *. <Table> <Caption> DECEMBER 31, ------------------------- 2001 2000 Pogo common stock: Participant-directed $ 2,699,256 * $ 2,818,335 * Nonparticipant-directed 7,409,914 * 7,974,874 * Prime Portfolio Money Market Fund 713,331 1,140,155 * Vanguard Wellington Income Fund 1,516,528 * 1,157,317 * Vanguard Index Trust - 500 Portfolio 1,805,813 * 1,426,585 * Vanguard PrimeCap Fund 3,798,195 * 4,100,411 * Other 526,337 400,125 ----------- ----------- $18,469,374 $19,027,802 =========== =========== </Table> During 2001, the Plan's investments depreciated in value by $2,452,552, as follows: <Table> <Caption> 2001 Common stock $(1,625,769) Common/collective trusts 17,253 Registered investment companies (844,036) ----------- $(2,452,552) =========== </Table> 5. NONPARTICIPANT-DIRECTED INVESTMENTS Information about the net assets and the significant components of the changes in net assets relating to the nonparticipant-directed investments is as follows: <Table> <Caption> DECEMBER 31, ------------------------- 2001 2000 Net assets: Pogo common stock, at quoted market value $ 7,409,914 $ 7,974,874 Company contributions receivable 51,327 37,743 ----------- ----------- $ 7,461,241 $ 8,012,617 =========== =========== </Table> - 7 - <Page> TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 2001 AND 2000 - -------------------------------------------------------------------------------- <Table> <Caption> 2001 Changes in net assets: Interest/dividend income $ 31,816 Net depreciation in market value of investments (1,224,762) Company contributions 1,013,669 Benefits paid (372,099) ----------- $ (551,376) =========== </Table> 6. RELATED-PARTY TRANSACTIONS Certain Plan investments are shares of common/collective trusts and registered investment companies managed by the Vanguard Group (Vanguard) and shares of Pogo common stock. Vanguard is the Plan's custodian and Pogo is the Plan's sponsor as defined by the Plan and therefore, these transactions qualify as party-in-interest transactions that are exempt from the prohibited transactions rules. 7. FEDERAL INCOME TAXES The Plan obtained its latest determination letter on February 25, 1996, in which the Internal Revenue Service stated that the Plan, as then designed, was in compliance with the applicable requirements of the IRC. The administrative board believes that the Plan was qualified and the related trust was tax-exempt as of December 31, 2001. The Plan has requested an update to the determination letter as of February 29, 2002 and the request is still pending as of June 26, 2002. 8. RISKS AND UNCERTAINTIES The Plan provides for investments in Pogo common stock, common/collective trusts and various registered investment companies. Investment securities, in general, are exposed to various risks, such as interest rate, credit and overall market volatility risk. Due to the level of risk associated with certain investment securities, it is reasonably possible that significant changes in the values of investment securities will occur in the near term. - 8 - <Page> TAX-ADVANTAGED SAVINGS PLAN OF POGO PRODUCING COMPANY SCHEDULE OF ASSETS (HELD AT END OF YEAR)** DECEMBER 31, 2001 <Table> <Caption> IDENTITY OF ISSUER, BORROWER NUMBER OF CURRENT LESSOR OR SIMILAR PARTY DESCRIPTION OF INVESTMENT SHARES/UNITS COST VALUE * Pogo Producing Company Pogo nonparticipant-directed common stock 282,068 $6,139,468 $ 7,409,914 * Pogo Producing Company Pogo participant-directed common stock 102,750 ** 2,699,256 * The Vanguard Group Prime Portfolio Money Market Fund 713,331 ** 713,331 * The Vanguard Group Investment-Grade Corporate Portfolio Bond Fund 60,638 ** 526,337 * The Vanguard Group Vanguard Wellington Income Fund 55,632 ** 1,516,528 * The Vanguard Group Vanguard Index Trust - 500 Portfolio 17,054 ** 1,805,813 * The Vanguard Group Vanguard PrimeCap Fund 73,723 ** 3,798,195 ----------- $18,469,374 =========== </Table> * Indicates party-in-interest. ** Cost not required for participant-directed investments. - 9 - <Page> SIGNATURES Pursuant to the requirements of the Securities and Exchange Act of 1934, the trustees (or other persons who administer the employee benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized. TAX-ADVANTAGED SAVINGS OF POGO PRODUCING COMPANY /s/ JOHN O. MCCOY, JR. ----------------------------------------- By: John O. McCoy, Jr. Member of the Administrative Board Date: June 28, 2002 <Page> INDEX TO EXHIBITS <Table> <Caption> EXHIBIT NUMBER DESCRIPTION - ------ ----------- 23.1 -- Consent of PricewaterhouseCoopers LLP </Table>