Filed by Exxon Mobil Corporation

(Commission File No.: 001-02256)

Pursuant to Rule 425 of the Securities Act of 1933

and deemed filed pursuant to Rule 14a-12

of the Securities Exchange Act of 1934

Subject Company: Pioneer Natural Resources Company

(Commission File No.: 001-13245)

The following three communications were delivered in connection with Exxon Mobil Corporation’s 2023 fourth-quarter earnings on February 2, 2024:

Excerpts from ExxonMobil public statements on February 2, 2024

Jennifer Driscoll

Hello, everyone. Welcome to ExxonMobil’s fourth-quarter 2023 earnings call. We appreciate you being with us today. I’m Jennifer Driscoll, Vice President of Investor Relations. I’m joined by Darren Woods, Chairman and CEO, and Kathy Mikells, Senior Vice President and CFO.

This presentation and prerecorded remarks are available on the Investors section of our website. They are meant to accompany the fourth-quarter earnings news release, which is posted in the same location.

In conjunction with our recent announcement about acquiring Pioneer Natural Resources, we’ve included additional information about the transaction on slide 2.

Please be aware that this presentation is not intended to be a solicitation of any vote or approval.

During the presentation, we’ll make forward-looking comments, which are subject to risks and uncertainties. Please read our cautionary statement on slide 3. You can find more information on the risks and uncertainties that apply to any forward-looking statements in our SEC filings on our website. Note that we also provided supplemental information at the end of our earnings slides, including an overview of full-year results, which are posted on the website.

And now, please turn to slide 4 for Darren’s opening remarks.

And we also announced two value-accretive acquisitions. Denbury, which closed in November, provides opportunities to profitably accelerate our Low Carbon Solutions business with a compelling, end-to-end, customer decarbonization offer. Pioneer, which is expected to close in the second quarter, will further differentiate our advantaged Upstream portfolio. The synergies will create significant shareholder value and accelerate Pioneer’s net zero ambitions by 15 years, to 2035.

On a constant-price basis, we more than doubled earnings in 2023 versus 2019, demonstrating the improved earnings power of the company.i

_________________ 

ⁱ Earnings exclude identified items and are adjusted to 2022 $60/bbl real Brent; 10-year average Energy, Chemical, and Specialty Product margins refer to the average of annual margins from 2010-2019. Earnings also excludes any impacts of Pioneer but includes Denbury as of November 2, 2023. See reconciliation of 2019 and 2023 adjusted earnings and cash flow from operations on slides 31 and 32 of the presentation.

We also announced our plan to increase the share repurchase pace to $20 billion annually through 2025 following the close of the Pioneer acquisition, assuming reasonable market conditions.

Finally, per SEC rules, we paused our share repurchase program in January following Pioneer’s S-4 filing. We expect to resume share repurchases after the Pioneer shareholders’ special meeting on Feb. 7th.

Our Upstream portfolio will be further transformed when we close on the transaction with Pioneer. By combining the capabilities of our two companies and leveraging the advances we’ve made in technology, we expect to recover more resource, more efficiently, with lower emissions. We’ll provide more detail about this compelling combination at our Spotlight event following the close.

Important Information about the Proposed Transaction and Where to Find It

In connection with the proposed transaction between Exxon Mobil Corporation (the “Company”) and Pioneer Natural Resources Company (“Pioneer”), the Company and Pioneer have filed and will file relevant materials with the Securities and Exchange Commission (the “SEC”). On November 21, 2023, the Company filed with the SEC a registration statement on Form S-4 (the “Form S-4”), as amended (No. 333-275695) to register the shares of the Company common stock to be issued in connection with the proposed transaction. The Form S-4, which was declared effective by the SEC on January 5, 2024, includes a definitive proxy statement of Pioneer that also constitutes a prospectus of the Company (the “definitive proxy statement/prospectus”). The definitive proxy statement/prospectus was mailed to the stockholders of Pioneer on January 8, 2024. This communication is not a substitute for the Form S-4, definitive proxy statement/prospectus or any other document that the Company or Pioneer (as applicable) has filed or may file with the SEC in connection with the proposed transaction. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, INVESTORS AND SECURITY HOLDERS OF THE COMPANY AND PIONEER ARE URGED TO READ THE FORM S-4, THE DEFINITIVE PROXY STATEMENT/PROSPECTUS FILED WITH THE SEC AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION AND RELATED MATTERS. Investors and security holders may obtain free copies of the Form S-4 and the definitive proxy statement/prospectus, as well as other filings containing important information about the Company or Pioneer, without charge at the SEC’s Internet website (http://www.sec.gov). Copies of the documents filed with the SEC by the Company are and will be available free of charge on the Company’s internet website at www.exxonmobil.com under the tab “investors” and then under the tab “SEC Filings” or by contacting the Company’s Investor Relations Department at investor.relations@exxonmobil.com. Copies of the documents filed with the SEC by Pioneer are and will be available free of charge on Pioneer’s internet website at https://investors.pxd.com/investors/financials/sec-filings/. The information included on, or accessible through, the Company’s or Pioneer’s website is not incorporated by reference into this communication.

Participants in the Solicitation

The Company, Pioneer, their respective directors and certain of their respective executive officers may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information about the directors and executive officers of Pioneer and a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Form S-4 in the section entitled “Interests of Pioneer’s Directors and Executive Officers in the Merger”, including the documents incorporated by reference therein. Information about the directors and executive officers of the Company is set forth in the sections entitled “Board of Directors” and “Director and Executive Officer Stock Ownership” included in the Company’s proxy statement for its 2023 annual meeting of stockholders, which was filed with the SEC on April 13, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000119312523100079/d429320ddef14a.htm), in the sections entitled “Information about our Executive Officers” and “Directors, Executive Officers and Corporate Governance” included in the Company’s Form 10-K for the year ended December 31, 2022, which was filed with the SEC on February 22, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000020/xom-20221231.htm), in the Company’s Form 8-K filed on November 7, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000059/xom-20231106.htm), in the Company's Form 8-K filed on June 6, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000036/xom-20230531.htm) and in the Company’s Form 8-K filed on February 24, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000022/xom-20230221.htm). Additional information regarding the participants in the proxy solicitations and a description of their direct or indirect interests, by security holdings or otherwise, are contained in the definitive proxy statement/prospectus and will be contained in other relevant materials filed with the SEC when they become available.

No Offer or Solicitation

This communication is for informational purposes and is not intended to, and shall not, constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval, nor shall there be any offer, solicitation or sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.

Forward-Looking Statements

This communication contains “forward-looking statements” within the meaning of the federal securities laws, including Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. In this context, forward-looking statements often address future business and financial events, conditions, expectations, plans or ambitions, and often contain words such as “expect,” “anticipate,” “intend,” “plan,” “believe,” “seek,” “see,” “will,” “would,” “target,” similar expressions, and variations or negatives of these words, but not all forward-looking statements include such words. Forward-looking statements by their nature address matters that are, to different degrees, uncertain, such as statements about the consummation of the proposed transaction and the anticipated benefits thereof. All such forward-looking statements are based upon current plans, estimates, expectations and ambitions that are subject to risks, uncertainties and assumptions, many of which are beyond the control of the Company and Pioneer, that could cause actual results to differ materially from those expressed in such forward-looking statements. Important risk factors that may cause such a difference include, but are not limited to: the completion of the proposed transaction on anticipated terms and timing, or at all, including obtaining regulatory approvals that may be required on anticipated terms and Pioneer stockholder approval; anticipated tax treatment, unforeseen liabilities, future capital expenditures, revenues, expenses, earnings, synergies, economic performance, indebtedness, financial condition, losses, future prospects, business and management strategies for the management, expansion and growth of the combined company’s operations and other conditions to the completion of the proposed transaction, including the possibility that any of the anticipated benefits of the proposed transaction will not be realized or will not be realized within the expected time period; the ability of the Company and Pioneer to integrate the business successfully and to achieve anticipated synergies and value creation; potential litigation relating to the proposed transaction that could be instituted against the Company, Pioneer or their respective directors; the risk that disruptions from the proposed transaction will harm the Company’s or Pioneer’s business, including current plans and operations and that management’s time and attention will be diverted on transaction-related issues; potential adverse reactions or changes to business relationships resulting from the announcement or completion of the proposed transaction; rating agency actions and the Company and Pioneer’s ability to access short- and long-term debt markets on a timely and affordable basis; legislative, regulatory and economic developments, including regulatory actions targeting public companies in the oil and gas industry and changes in local, national, or international laws, regulations, and policies affecting the Company and Pioneer including with respect to the environment; potential business uncertainty, including the outcome of commercial negotiations and changes to existing business relationships during the pendency of the proposed transaction that could affect the Company’s and/or Pioneer’s financial performance and operating results; certain restrictions during the pendency of the proposed transaction that may impact Pioneer’s ability to pursue certain business opportunities or strategic transactions or otherwise operate its business; acts of terrorism or outbreak of war, hostilities, civil unrest, attacks against the Company or Pioneer, and other political or security disturbances; dilution caused by the Company’s issuance of additional shares of its common stock in connection with the proposed transaction; the possibility that the transaction may be more expensive to complete than anticipated, including as a result of unexpected factors or events; changes in policy and consumer support for emission-reduction products and technology; the impacts of pandemics or other public health crises, including the effects of government responses on people and economies; global or regional changes in the supply and demand for oil, natural gas, petrochemicals, and feedstocks and other market or economic conditions that impact demand, prices and differentials, including reservoir performance; changes in technical or operating conditions, including unforeseen technical difficulties; those risks described in Item 1A of the Company’s Annual Report on Form 10-K, filed with the SEC on February 22, 2023, and subsequent reports on Forms 10-Q and 8-K, as well as under the heading “Factors Affecting Future Results” on the Investors page of the Company’s website at www.exxonmobil.com (information included on or accessible through the Company’s website is not incorporated by reference into this communication); those risks described in Item 1A of Pioneer’s Annual Report on Form 10-K, filed with the SEC on February 23, 2023, and subsequent reports on Forms 10-Q and 8-K; and those risks described in the registration statement on Form S-4 and accompanying definitive proxy statement/prospectus available from the sources indicated above. References to resources or other quantities of oil or natural gas may include amounts that the Company or Pioneer believe will ultimately be produced, but that are not yet classified as “proved reserves” under SEC definitions.

These risks, as well as other risks associated with the proposed transaction, are more fully discussed in the definitive proxy statement/prospectus included in the registration statement on Form S-4 filed with the SEC and mailed to Pioneer stockholders in connection with the proposed transaction. While the list of factors presented here and the list of factors presented in the registration statement on Form S-4 and the definitive proxy statement/prospectus are considered representative, no such list should be considered to be a complete statement of all potential risks and uncertainties. Unlisted factors may present significant additional obstacles to the realization of forward-looking statements. We caution you not to place undue reliance on any of these forward-looking statements as they are not guarantees of future performance or outcomes and that actual performance and outcomes, including, without limitation, our actual results of operations, financial condition and liquidity, and the development of new markets or market segments in which we operate, may differ materially from those made in or suggested by the forward-looking statements contained in this communication. Neither the Company nor Pioneer assumes any obligation to publicly provide revisions or updates to any forward-looking statements, whether as a result of new information, future developments or otherwise, should circumstances change, except as otherwise required by securities and other applicable laws. Neither future distribution of this communication nor the continued availability of this communication in archive form on the Company’s or Pioneer’s website should be deemed to constitute an update or re-affirmation of these statements as of any future date.

Actions needed to advance the Company’s 2030 and 2035 greenhouse gas emission-reductions plans are incorporated into its medium-term business plans, which are updated annually. The reference case for planning beyond 2030 is based on the Company’s Energy Outlook research and publication (the “Outlook”). The Outlook is reflective of the existing global policy environment, the Outlook does not attempt to project the degree of required future policy and technology advancement and deployment for the world, or the Company, to meet net zero by 2050. As future policies and technology advancements emerge, they will be incorporated into the Outlook, and the Company’s business plans will be updated accordingly. Actual future results, including the achievement of net zero in Upstream Permian Basin unconventional operated assets by 2030/2035 and plans to lower methane emissions from operated assets, to increase water recycling in our combined Permian operations, and to feed hydrogen, ammonia, and carbon capture projects could vary depending on the ability to execute operational objectives on a timely and successful basis; policy support for emission-reduction products and technologies; changes in laws, regulations and international treaties regarding lower emission technologies and projects; government incentives; unforeseen technical or operational difficulties; the outcome of research efforts and future technology developments, including the ability to scale projects, technologies, and markets on a commercially competitive basis; changes in supply and demand and other market factors affecting future prices of oil, gas, and petrochemical products; the actions of competitors; and other factors discussed in this communication and in the additional forward looking statement disclaimer included above.

All references to production rates, project capacity, resource size, and acreage are on a gross basis, unless otherwise noted.

Excerpt from ExxonMobil 4Q23 Earnings Call

ExxonMobil Fourth Quarter 2023 Earnings Call Q&A

This abridged transcript presents questions related to ExxonMobil’s announced Pioneer Natural Resources acquisition during ExxonMobil’s fourth quarter 2023 earnings call held on February 2, 2024.

***

Neal Dingmann: Good morning, Darren and team. My question is on the Permian. Specifically, your continued record production. The play, it appears, at least from what I am seeing going forward, your proforma Permian activity is likely to continue trending higher and I'm just wondering maybe, Darren, how you’d respond to maybe any of the critics who suggest all U.S. companies should instead maintain flat production in order to, you know, I guess, appease Saudi and the others, maybe more so. 

Darren Woods: Yeah. Thanks for the question. No, I would just tell you, we're not going to run the business to appease an external member out there. I think the way we look at it is, it comes back to every dollar that we choose to invest and spend. Do we see a return, are we convinced that we're effectively spending that money, and if we're spending it efficiently. That's the criteria that we're using. That's the plans that we've built. We expect to grow our volumes in 2024 to about 650 Kbd and then we're going to continue that growth through to the targets that we've laid out in 2027 of, you know, about a million barrels a day, close to a million barrels a day. So, that's the plan that we have. We're executing to that plan and, as we've said before, year on year, it's not straight ratable growth, it'll be lumpy growth. But, you know, over time, it will average about 13% and we haven't seen anything to date that would say that's going to change. Obviously, as we bring Pioneer in, into the fold, we’ll bring their production in and look to kind of optimize across that portfolio that both companies have and, as we've said before, that once we close on that, we'll come back out and have a spotlight where we’ll, you know, share what the implications of bringing these two companies together and the impact on our Permian production? 

***

Important Information about the Proposed Transaction and Where to Find It

In connection with the proposed transaction between Exxon Mobil Corporation (the “Company”) and Pioneer Natural Resources Company (“Pioneer”), the Company and Pioneer have filed and will file relevant materials with the Securities and Exchange Commission (the “SEC”). On November 21, 2023, the Company filed with the SEC a registration statement on Form S-4 (the “Form S-4”), as amended (No. 333-275695) to register the shares of the Company common stock to be issued in connection with the proposed transaction. The Form S-4, which was declared effective by the SEC on January 5, 2024, includes a definitive proxy statement of Pioneer that also constitutes a prospectus of the Company (the “definitive proxy statement/prospectus”). The definitive proxy statement/prospectus was mailed to the stockholders of Pioneer on January 8, 2024. This communication is not a substitute for the Form S-4, definitive proxy statement/prospectus or any other document that the Company or Pioneer (as applicable) has filed or may file with the SEC in connection with the proposed transaction. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, INVESTORS AND SECURITY HOLDERS OF THE COMPANY AND PIONEER ARE URGED TO READ THE FORM S-4, THE DEFINITIVE PROXY STATEMENT/PROSPECTUS FILED WITH THE SEC AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION AND RELATED MATTERS. Investors and security holders may obtain free copies of the Form S-4 and the definitive proxy statement/prospectus, as well as other filings containing important information about the Company or Pioneer, without charge at the SEC’s Internet website (http://www.sec.gov). Copies of the documents filed with the SEC by the Company are and will be available free of charge on the Company’s internet website at www.exxonmobil.com under the tab “investors” and then under the tab “SEC Filings” or by contacting the Company’s Investor Relations Department at investor.relations@exxonmobil.com. Copies of the documents filed with the SEC by Pioneer are and will be available free of charge on Pioneer’s internet website at https://investors.pxd.com/investors/financials/sec-filings/. The information included on, or accessible through, the Company’s or Pioneer’s website is not incorporated by reference into this communication.

Participants in the Solicitation

The Company, Pioneer, their respective directors and certain of their respective executive officers may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information about the directors and executive officers of Pioneer and a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Form S-4 in the section entitled “Interests of Pioneer’s Directors and Executive Officers in the Merger”, including the documents incorporated by reference therein. Information about the directors and executive officers of the Company is set forth in the sections entitled “Board of Directors” and “Director and Executive Officer Stock Ownership” included in the Company’s proxy statement for its 2023 annual meeting of stockholders, which was filed with the SEC on April 13, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000119312523100079/d429320ddef14a.htm), in the sections entitled “Information about our Executive Officers” and “Directors, Executive Officers and Corporate Governance” included in the Company’s Form 10-K for the year ended December 31, 2022, which was filed with the SEC on February 22, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000020/xom-20221231.htm), in the Company’s Form 8-K filed on November 7, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000059/xom-20231106.htm), in the Company's Form 8-K filed on June 6, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000036/xom-20230531.htm) and in the Company’s Form 8-K filed on February 24, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000022/xom-20230221.htm). Additional information regarding the participants in the proxy solicitations and a description of their direct or indirect interests, by security holdings or otherwise, are contained in the definitive proxy statement/prospectus and will be contained in other relevant materials filed with the SEC when they become available.

No Offer or Solicitation

This communication is for informational purposes and is not intended to, and shall not, constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval, nor shall there be any offer, solicitation or sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.

Forward-Looking Statements

This communication contains “forward-looking statements” within the meaning of the federal securities laws, including Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. In this context, forward-looking statements often address future business and financial events, conditions, expectations, plans or ambitions, and often contain words such as “expect,” “anticipate,” “intend,” “plan,” “believe,” “seek,” “see,” “will,” “would,” “target,” similar expressions, and variations or negatives of these words, but not all forward-looking statements include such words. Forward-looking statements by their nature address matters that are, to different degrees, uncertain, such as statements about the consummation of the proposed transaction and the anticipated benefits thereof. All such forward-looking statements are based upon current plans, estimates, expectations and ambitions that are subject to risks, uncertainties and assumptions, many of which are beyond the control of the Company and Pioneer, that could cause actual results to differ materially from those expressed in such forward-looking statements. Important risk factors that may cause such a difference include, but are not limited to: the completion of the proposed transaction on anticipated terms and timing, or at all, including obtaining regulatory approvals that may be required on anticipated terms and Pioneer stockholder approval; anticipated tax treatment, unforeseen liabilities, future capital expenditures, revenues, expenses, earnings, synergies, economic performance, indebtedness, financial condition, losses, future prospects, business and management strategies for the management, expansion and growth of the combined company’s operations and other conditions to the completion of the proposed transaction, including the possibility that any of the anticipated benefits of the proposed transaction will not be realized or will not be realized within the expected time period; the ability of the Company and Pioneer to integrate the business successfully and to achieve anticipated synergies and value creation; potential litigation relating to the proposed transaction that could be instituted against the Company, Pioneer or their respective directors; the risk that disruptions from the proposed transaction will harm the Company’s or Pioneer’s business, including current plans and operations and that management’s time and attention will be diverted on transaction-related issues; potential adverse reactions or changes to business relationships resulting from the announcement or completion of the proposed transaction; rating agency actions and the Company and Pioneer’s ability to access short- and long-term debt markets on a timely and affordable basis; legislative, regulatory and economic developments, including regulatory actions targeting public companies in the oil and gas industry and changes in local, national, or international laws, regulations, and policies affecting the Company and Pioneer including with respect to the environment; potential business uncertainty, including the outcome of commercial negotiations and changes to existing business relationships during the pendency of the proposed transaction that could affect the Company’s and/or Pioneer’s financial performance and operating results; certain restrictions during the pendency of the proposed transaction that may impact Pioneer’s ability to pursue certain business opportunities or strategic transactions or otherwise operate its business; acts of terrorism or outbreak of war, hostilities, civil unrest, attacks against the Company or Pioneer, and other political or security disturbances; dilution caused by the Company’s issuance of additional shares of its common stock in connection with the proposed transaction; the possibility that the transaction may be more expensive to complete than anticipated, including as a result of unexpected factors or events; changes in policy and consumer support for emission-reduction products and technology; the impacts of pandemics or other public health crises, including the effects of government responses on people and economies; global or regional changes in the supply and demand for oil, natural gas, petrochemicals, and feedstocks and other market or economic conditions that impact demand, prices and differentials, including reservoir performance; changes in technical or operating conditions, including unforeseen technical difficulties; those risks described in Item 1A of the Company’s Annual Report on Form 10-K, filed with the SEC on February 22, 2023, and subsequent reports on Forms 10-Q and 8-K, as well as under the heading “Factors Affecting Future Results” on the Investors page of the Company’s website at www.exxonmobil.com (information included on or accessible through the Company’s website is not incorporated by reference into this communication); those risks described in Item 1A of Pioneer’s Annual Report on Form 10-K, filed with the SEC on February 23, 2023, and subsequent reports on Forms 10-Q and 8-K; and those risks described in the registration statement on Form S-4 and accompanying definitive proxy statement/prospectus available from the sources indicated above. References to resources or other quantities of oil or natural gas may include amounts that the Company or Pioneer believe will ultimately be produced, but that are not yet classified as “proved reserves” under SEC definitions.

These risks, as well as other risks associated with the proposed transaction, are more fully discussed in the definitive proxy statement/prospectus included in the registration statement on Form S-4 filed with the SEC and mailed to Pioneer stockholders in connection with the proposed transaction. While the list of factors presented here and the list of factors presented in the registration statement on Form S-4 and the definitive proxy statement/prospectus are considered representative, no such list should be considered to be a complete statement of all potential risks and uncertainties. Unlisted factors may present significant additional obstacles to the realization of forward-looking statements. We caution you not to place undue reliance on any of these forward-looking statements as they are not guarantees of future performance or outcomes and that actual performance and outcomes, including, without limitation, our actual results of operations, financial condition and liquidity, and the development of new markets or market segments in which we operate, may differ materially from those made in or suggested by the forward-looking statements contained in this communication. Neither the Company nor Pioneer assumes any obligation to publicly provide revisions or updates to any forward-looking statements, whether as a result of new information, future developments or otherwise, should circumstances change, except as otherwise required by securities and other applicable laws. Neither future distribution of this communication nor the continued availability of this communication in archive form on the Company’s or Pioneer’s website should be deemed to constitute an update or re-affirmation of these statements as of any future date.

Actions needed to advance the Company’s 2030 and 2035 greenhouse gas emission-reductions plans are incorporated into its medium-term business plans, which are updated annually. The reference case for planning beyond 2030 is based on the Company’s Energy Outlook research and publication (the “Outlook”). The Outlook is reflective of the existing global policy environment, the Outlook does not attempt to project the degree of required future policy and technology advancement and deployment for the world, or the Company, to meet net zero by 2050. As future policies and technology advancements emerge, they will be incorporated into the Outlook, and the Company’s business plans will be updated accordingly. Actual future results, including the achievement of net zero in Upstream Permian Basin unconventional operated assets by 2030/2035 and plans to lower methane emissions from operated assets, to increase water recycling in our combined Permian operations, and to feed hydrogen, ammonia, and carbon capture projects could vary depending on the ability to execute operational objectives on a timely and successful basis; policy support for emission-reduction products and technologies; changes in laws, regulations and international treaties regarding lower emission technologies and projects; government incentives; unforeseen technical or operational difficulties; the outcome of research efforts and future technology developments, including the ability to scale projects, technologies, and markets on a commercially competitive basis; changes in supply and demand and other market factors affecting future prices of oil, gas, and petrochemical products; the actions of competitors; and other factors discussed in this communication and in the additional forward looking statement disclaimer included above.

All references to production rates, project capacity, resource size, and acreage are on a gross basis, unless otherwise noted.

4Q 2023 Earnings Release

ExxonMobil Announces 2023 Results

Results Summary

SPRING, Texas – February 2, 2024 – Exxon Mobil Corporation today announced fourth-quarter 2023 earnings of $7.6 billion, or $1.91 per share assuming dilution. Fourth-quarter results included unfavorable identified items of $2.3 billion including a $2.0 billion impairment as a result of regulatory obstacles in California that have prevented production and distribution assets from coming back online. Impairments were partly offset by favorable tax and divestment-related items. Earnings excluding identified items were $10.0 billion, or $2.48 per share assuming dilution. For the full year 2023, the company reported earnings of $36.0 billion, or $8.89 per share assuming dilution.

“Our consistent strategy and execution excellence across the business delivered industry-leading earnings and enabled us to return more cash to shareholders than our peers in 2023 ¹,” said Darren Woods, chairman and chief executive officer.

“These results demonstrate the fundamental improvements we’ve made to our business, reflecting our progress in high-grading our portfolio through investments in advantaged projects and select divestments, while, at the same time, driving a higher level of efficiency and effectiveness throughout the business. The foundation of our success comes from the resiliency, hard work and commitment of our people. As I reflect on our industry-leading results over the past year, I have a great sense of pride in what our people accomplished.”

3Q23 to 4Q23 Factor Analysis

Financial Highlights

ADVANCING CLIMATE SOLUTIONS

Progress Toward Net Zero

Lithium

Carbon Capture and Storage

EARNINGS AND VOLUME SUMMARY BY SEGMENT

Upstream

Energy Products

Chemical Products

Specialty Products

Corporate and Financing

CASH FLOW FROM OPERATIONS AND ASSET SALES EXCLUDING WORKING CAPITAL

FREE CASH FLOW

RETURN ON AVERAGE CAPITAL EMPLOYED

CALCULATION OF STRUCTURAL COST SAVINGS

This press release also references structural cost savings. Structural cost savings describe decreases in cash opex excluding energy and production taxes as a result of operational efficiencies, workforce reductions, and other cost-saving measures that are expected to be sustainable compared to 2019 levels. Relative to 2019, estimated cumulative structural cost savings totaled $9.7 billion, which included an additional $2.3 billion in 2023. The total change between periods in expenses above will reflect both structural cost savings and other changes in spend, including market factors, such as inflation and foreign exchange impacts, as well as changes in activity levels and costs associated with new operations. Estimates of cumulative annual structural savings may be revised depending on whether cost reductions realized in prior periods are determined to be sustainable compared to 2019 levels. Structural cost savings are stewarded internally to support management's oversight of spending over time. This measure is useful for investors to understand the Corporation's efforts to optimize spending through disciplined expense management.

ExxonMobil will discuss financial and operating results and other matters during a webcast at 7:30 a.m. Central Time on February 2, 2024. To listen to the event or access an archived replay, please visit www.exxonmobil.com.

Important Information about the Pioneer Transaction and Where to Find It

In connection with the proposed transaction between Exxon Mobil Corporation (the “Company”) and Pioneer Natural Resources Company (“Pioneer”), the Company and Pioneer have filed and will file relevant materials with the Securities and Exchange Commission (the “SEC”). On November 21, 2023, the Company filed with the SEC a registration statement on Form S-4 (the “Form S-4”), as amended (No. 333-275695) to register the shares of the Company common stock to be issued in connection with the proposed transaction. The Form S-4, which was declared effective by the SEC on January 5, 2024, includes a definitive proxy statement of Pioneer that also constitutes a prospectus of the Company (the “definitive proxy statement/prospectus”). The definitive proxy statement/prospectus was mailed to the stockholders of Pioneer on January 8, 2024.

This communication is not a substitute for the Form S-4, definitive proxy statement/prospectus or any other document that the Company or Pioneer (as applicable) has filed or may file with the SEC in connection with the proposed transaction.

BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, INVESTORS AND SECURITY HOLDERS OF EXXONMOBIL AND PIONEER ARE URGED TO READ THE FORM S-4, THE DEFINITIVE PROXY STATEMENT/PROSPECTUS FILED WITH THE SEC AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION AND RELATED MATTERS.

Investors and security holders may obtain free copies of the Form S-4 and the definitive proxy statement/prospectus (when they become available), as well as other filings containing important information about ExxonMobil or Pioneer, without charge at the SEC’s Internet website (http://www.sec.gov). Copies of the documents filed with the SEC by ExxonMobil are and will be available free of charge on ExxonMobil’s internet website at www.exxonmobil.com under the tab “investors” and then under the tab “SEC Filings” or by contacting ExxonMobil’s Investor Relations Department at investor.relations@exxonmobil.com. Copies of the documents filed with the SEC by Pioneer are and will be available free of charge on Pioneer’s internet website at https://investors.pxd.com/investors/financials/sec-filings/. The information included on, or accessible through, ExxonMobil’s or Pioneer’s website is not incorporated by reference into this communication.

Participants in the Solicitation

The Company, Pioneer, their respective directors and certain of their respective executive officers may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information about the directors and executive officers of Pioneer and a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Form S-4 in the section entitled “Interests of Pioneer’s Directors and Executive Officers in the Merger”, including the documents incorporated by reference therein. Information about the directors and executive officers of the Company is set forth in the sections entitled “Board of Directors” and “Director and Executive Officer Stock Ownership” included in the Company’s proxy statement for its 2023 annual meeting of stockholders, which was filed with the SEC on April 13, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000119312523100079/d429320ddef14a.htm), in the sections entitled “Information about our Executive Officers” and “Directors, Executive Officers and Corporate Governance” included in the Company’s Form 10-K for the year ended December 31, 2022, which was filed with the SEC on February 22, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000020/xom-20221231.htm), in the Company’s Form 8-K filed on June 6, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000036/xom-20230531.htm) and in the Company’s Form 8-K filed on February 24, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000022/xom-20230221.htm). Additional information regarding the participants in the proxy solicitations and a description of their direct or indirect interests, by security holdings or otherwise, are contained in the definitive proxy statement/prospectus and will be contained in other relevant materials filed with the SEC when they become available.

No Offer or Solicitation

This communication is for informational purposes and is not intended to, and shall not, constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval, nor shall there be any offer, solicitation or sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.

Cautionary Statement

Statements related to future events; projections; descriptions of strategic, operating, and financial plans and objectives; statements of future ambitions and plans; and other statements of future events or conditions in this release, are forward-looking statements. Similarly, discussion of future carbon capture, transportation and storage, as well as biofuels, hydrogen and other plans to reduce emissions of ExxonMobil, its affiliates or companies it is seeking to acquire, are dependent on future market factors, such as continued technological progress, policy support and timely rule-making and permitting, and represent forward-looking statements. Actual future results, including financial and operating performance; potential earnings, cash flow, or rate of return; total capital expenditures and mix, including allocations of capital to low carbon investments; realization and maintenance of structural cost reductions and efficiency gains, including the ability to offset inflationary pressure; plans to reduce future emissions and emissions intensity; ambitions to reach Scope 1 and Scope 2 net zero from operated assets by 2050, to reach Scope 1 and 2 net zero in Upstream Permian Basin unconventional operated assets by 2030 and in Pioneer Permian assets by 2035, to eliminate routine flaring in-line with World Bank Zero Routine Flaring, to reach near-zero methane emissions from its operated assets and other methane initiatives, to meet ExxonMobil’s emission reduction goals and plans, divestment and start-up plans, and associated project plans as well as technology advances, including the timing and outcome of projects to capture and store CO2, produce hydrogen, produce biofuels, produce lithium and use plastic waste as feedstock for advanced recycling; changes in law, taxes, or regulation including environmental and tax regulations, trade sanctions, and timely granting of governmental permits and certifications; cash flow, dividends and shareholder returns, including the timing and amounts of share repurchases; future debt levels and credit ratings; business and project plans, timing, costs, capacities and returns; resource recoveries and production rates; and planned Pioneer and Denbury integrated benefits, could differ materially due to a number of factors. These include global or regional changes in the supply and demand for oil, natural gas, petrochemicals, and feedstocks and other market factors, economic conditions and seasonal fluctuations that impact prices and differentials for our products; government policies supporting lower carbon investment opportunities such as the U.S. Inflation Reduction Act or policies limiting the attractiveness of future investment such as the additional European taxes on the energy sector and unequal support for different methods of emissions reduction; variable impacts of trading activities on our margins and results each quarter; actions of competitors and commercial counterparties; the outcome of commercial negotiations, including final agreed terms and conditions; the ability to access debt markets; the ultimate impacts of public health crises, including the effects of government responses on people and economies; reservoir performance, including variability and timing factors applicable to unconventional resources; the level and outcome of exploration projects and decisions to invest in future reserves; timely completion of development and other construction projects; final management approval of future projects and any changes in the scope, terms, or costs of such projects as approved; government regulation of our growth opportunities; war, civil unrest, attacks against the company or industry and other political or security disturbances; expropriations, seizure, or capacity, insurance or shipping limitations by foreign governments or laws; opportunities for potential acquisitions, investments or divestments and satisfaction of applicable conditions to closing, including timely regulatory approvals; the capture of efficiencies within and between business lines and the ability to maintain near-term cost reductions as ongoing efficiencies; unforeseen technical or operating difficulties and unplanned maintenance; the development and competitiveness of alternative energy and emission reduction technologies; the results of research programs and the ability to bring new technologies to commercial scale on a cost-competitive basis; and other factors discussed under Item 1A. Risk Factors of ExxonMobil’s 2022 Form 10-K.

Actions needed to advance ExxonMobil’s 2030 greenhouse gas emission-reductions plans are incorporated into its medium-term business plans, which are updated annually. The reference case for planning beyond 2030 is based on the Company’s Global Outlook research and publication. The Outlook is reflective of the existing global policy environment and an assumption of increasing policy stringency and technology improvement to 2050. However, the Global Outlook does not attempt to project the degree of required future policy and technology advancement and deployment for the world, or ExxonMobil, to meet net zero by 2050. As future policies and technology advancements emerge, they will be incorporated into the Outlook, and the Company’s business plans will be updated accordingly. References to projects or opportunities may not reflect investment decisions made by the corporation or its affiliates. Individual projects or opportunities may advance based on a number of factors, including availability of supportive policy, permitting, technological advancement for cost-effective abatement, insights from the company planning process, and alignment with our partners and other stakeholders. Capital investment guidance in lower-emission investments is based on our corporate plan; however, actual investment levels will be subject to the availability of the opportunity set, public policy support, and focused on returns.

Forward-looking and other statements regarding environmental and other sustainability efforts and aspirations are not an indication that these statements are material to investors or requiring disclosure in our filing with the SEC. In addition, historical, current, and forward-looking environmental and other sustainability-related statements may be based on standards for measuring progress that are still developing, internal controls and processes that continue to evolve, and assumptions that are subject to change in the future, including future rule-making. The release is provided under consistent SEC disclosure requirements and should not be misinterpreted as applying to any other disclosure standards.

Frequently Used Terms and Non-GAAP Measures

This press release includes cash flow from operations and asset sales (non-GAAP). Because of the regular nature of our asset management and divestment program, the company believes it is useful for investors to consider proceeds associated with the sales of subsidiaries, property, plant and equipment, and sales and returns of investments together with cash provided by operating activities when evaluating cash available for investment in the business and financing activities. A reconciliation to net cash provided by operating activities for the 2022 and 2023 periods is shown on page 8.

This press release also includes cash flow from operations and asset sales excluding working capital (non-GAAP). The company believes it is useful for investors to consider these numbers in comparing the underlying performance of the company's business across periods when there are significant period-to-period differences in the amount of changes in working capital. A reconciliation to net cash provided by operating activities for the 2022 and 2023 periods is shown on page 8.

This press release also includes Earnings/(Loss) Excluding Identified Items (non-GAAP), which are earnings/(loss) excluding individually significant non-operational events with, typically, an absolute corporate total earnings impact of at least $250 million in a given quarter. The earnings/(loss) impact of an identified item for an individual segment may be less than $250 million when the item impacts several periods or several segments. Earnings/(loss) excluding Identified Items does include non-operational earnings events or impacts that are generally below the $250 million threshold utilized for identified items. When the effect of these events is significant in aggregate, it is indicated in analysis of period results as part of quarterly earnings press release and teleconference materials. Management uses these figures to improve comparability of the underlying business across multiple periods by isolating and removing significant non-operational events from business results. The Corporation believes this view provides investors increased transparency into business results and trends and provides investors with a view of the business as seen through the eyes of management. Earnings excluding Identified Items is not meant to be viewed in isolation or as a substitute for net income/(loss) attributable to ExxonMobil as prepared in accordance with U.S. GAAP. A reconciliation to earnings is shown for 2023 and 2022 periods in Attachments II-a and II-b. Corresponding per share amounts are shown on page 1 and in Attachment II-a, including a reconciliation to earnings/(loss) per common share – assuming dilution (U.S. GAAP).

This press release also includes total taxes including sales-based taxes. This is a broader indicator of the total tax burden on the Corporation’s products and earnings, including certain sales and value-added taxes imposed on and concurrent with revenue-producing transactions with customers and collected on behalf of governmental authorities (“sales-based taxes”). It combines “Income taxes” and “Total other taxes and duties” with sales-based taxes, which are reported net in the income statement. The company believes it is useful for the Corporation and its investors to understand the total tax burden imposed on the Corporation’s products and earnings. A reconciliation to total taxes is shown in Attachment I-a.

This press release also references free cash flow (non-GAAP). Free cash flow is the sum of net cash provided by operating activities and net cash flow used in investing activities. This measure is useful when evaluating cash available for financing activities, including shareholder distributions, after investment in the business. Free cash flow is not meant to be viewed in isolation or as a substitute for net cash provided by operating activities. A reconciliation to net cash provided by operating activities for the 2022 and 2023 periods is shown on page 8.

References to resources or resource base may include quantities of oil and natural gas classified as proved reserves, as well as quantities that are not yet classified as proved reserves, but that are expected to be ultimately recoverable. The term “resource base” or similar terms are not intended to correspond to SEC definitions such as “probable” or “possible” reserves. A reconciliation of production excluding divestments, entitlements, and government mandates to actual production is contained in the Supplement to this release included as Exhibit 99.2 to the Form 8-K filed the same day as this news release.

The term “project” as used in this news release can refer to a variety of different activities and does not necessarily have the same meaning as in any government payment transparency reports. Projects or plans may not reflect investment decisions made by the company. Individual opportunities may advance based on a number of factors, including availability of supportive policy, technology for cost-effective abatement, and alignment with our partners and other stakeholders. The company may refer to these opportunities as projects in external disclosures at various stages throughout their progression.

Government mandates are changes to ExxonMobil’s sustainable production levels as a result of production limits or sanctions imposed by governments.

Compound annual growth rate (CAGR) represents the consistent rate at which an investment or business result would have grown had the investment or business result compounded at the same rate each year.

Debt-to-capital ratio is total debt divided by the sum of total debt and equity. Total debt is the sum of notes and loans payable and long-term debt, as reported in the consolidated balance sheet, along with total equity.

Net-debt-to-capital ratio is net debt divided by the sum of net debt and total equity, where net debt is net of cash and cash equivalents, excluding restricted cash.

This press release also references structural cost savings, for more details see page 9.

Reference to Earnings

References to corporate earnings mean net income attributable to ExxonMobil (U.S. GAAP) from the consolidated income statement. Unless otherwise indicated, references to earnings, Upstream, Energy Products, Chemical Products, Specialty Products and Corporate and Financing earnings, and earnings per share are ExxonMobil’s share after excluding amounts attributable to noncontrolling interests.

Exxon Mobil Corporation has numerous affiliates, many with names that include ExxonMobil, Exxon, Mobil, Esso, and XTO. For convenience and simplicity, those terms and terms such as Corporation, company, our, we, and its are sometimes used as abbreviated references to specific affiliates or affiliate groups. Similarly, ExxonMobil has business relationships with thousands of customers, suppliers, governments, and others. For convenience and simplicity, words such as venture, joint venture, partnership, co-venturer, and partner are used to indicate business and other relationships involving common activities and interests, and those words may not indicate precise legal relationships. ExxonMobil's ambitions, plans and goals do not guarantee any action or future performance by its affiliates or Exxon Mobil Corporation's responsibility for those affiliates' actions and future performance, each affiliate of which manages its own affairs.

Throughout this press release, both Exhibit 99.1 as well as Exhibit 99.2, due to rounding, numbers presented may not add up precisely to the totals indicated.

ATTACHMENT I-a

CONDENSED CONSOLIDATED STATEMENT OF INCOME

(Preliminary)

OTHER FINANCIAL DATA

.

ATTACHMENT I-b

CONDENSED CONSOLIDATED BALANCE SHEET

(Preliminary)

ATTACHMENT I-c

CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS

(Preliminary)

ATTACHMENT II-a

KEY FIGURES: IDENTIFIED ITEMS

ATTACHMENT II-b

KEY FIGURES: IDENTIFIED ITEMS BY SEGMENT

ATTACHMENT III

KEY FIGURES: UPSTREAM VOLUMES

ATTACHMENT IV

KEY FIGURES: MANUFACTURING THROUGHPUT AND SALES

ATTACHMENT V

KEY FIGURES: CAPITAL AND EXPLORATION EXPENDITURES

CASH CAPITAL EXPENDITURES

ATTACHMENT VI

KEY FIGURES: QUARTER EARNINGS/(LOSS)

Results Summary

Full-year Factor Analysis

ATTACHMENT VII

KEY FIGURES: EARNINGS/(LOSS) BY QUARTER

Important Information about the Proposed Transaction and Where to Find It

In connection with the proposed transaction between Exxon Mobil Corporation (the “Company”) and Pioneer Natural Resources Company (“Pioneer”), the Company and Pioneer have filed and will file relevant materials with the Securities and Exchange Commission (the “SEC”). On November 21, 2023, the Company filed with the SEC a registration statement on Form S-4 (the “Form S-4”), as amended (No. 333-275695) to register the shares of the Company common stock to be issued in connection with the proposed transaction. The Form S-4, which was declared effective by the SEC on January 5, 2024, includes a definitive proxy statement of Pioneer that also constitutes a prospectus of the Company (the “definitive proxy statement/prospectus”). The definitive proxy statement/prospectus was mailed to the stockholders of Pioneer on January 8, 2024. This communication is not a substitute for the Form S-4, definitive proxy statement/prospectus or any other document that the Company or Pioneer (as applicable) has filed or may file with the SEC in connection with the proposed transaction. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, INVESTORS AND SECURITY HOLDERS OF THE COMPANY AND PIONEER ARE URGED TO READ THE FORM S-4, THE DEFINITIVE PROXY STATEMENT/PROSPECTUS FILED WITH THE SEC AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION AND RELATED MATTERS. Investors and security holders may obtain free copies of the Form S-4 and the definitive proxy statement/prospectus, as well as other filings containing important information about the Company or Pioneer, without charge at the SEC’s Internet website (http://www.sec.gov). Copies of the documents filed with the SEC by the Company are and will be available free of charge on the Company’s internet website at www.exxonmobil.com under the tab “investors” and then under the tab “SEC Filings” or by contacting the Company’s Investor Relations Department at investor.relations@exxonmobil.com. Copies of the documents filed with the SEC by Pioneer are and will be available free of charge on Pioneer’s internet website at https://investors.pxd.com/investors/financials/sec-filings/. The information included on, or accessible through, the Company’s or Pioneer’s website is not incorporated by reference into this communication.

Participants in the Solicitation

The Company, Pioneer, their respective directors and certain of their respective executive officers may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information about the directors and executive officers of Pioneer and a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Form S-4 in the section entitled “Interests of Pioneer’s Directors and Executive Officers in the Merger”, including the documents incorporated by reference therein. Information about the directors and executive officers of the Company is set forth in the sections entitled “Board of Directors” and “Director and Executive Officer Stock Ownership” included in the Company’s proxy statement for its 2023 annual meeting of stockholders, which was filed with the SEC on April 13, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000119312523100079/d429320ddef14a.htm), in the sections entitled “Information about our Executive Officers” and “Directors, Executive Officers and Corporate Governance” included in the Company’s Form 10-K for the year ended December 31, 2022, which was filed with the SEC on February 22, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000020/xom-20221231.htm), in the Company’s Form 8-K filed on November 7, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000059/xom-20231106.htm), in the Company's Form 8-K filed on June 6, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000036/xom-20230531.htm) and in the Company’s Form 8-K filed on February 24, 2023 (and which is available at https://www.sec.gov/Archives/edgar/data/34088/000003408823000022/xom-20230221.htm). Additional information regarding the participants in the proxy solicitations and a description of their direct or indirect interests, by security holdings or otherwise, are contained in the definitive proxy statement/prospectus and will be contained in other relevant materials filed with the SEC when they become available.

No Offer or Solicitation

This communication is for informational purposes and is not intended to, and shall not, constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval, nor shall there be any offer, solicitation or sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.

Forward-Looking Statements

This communication contains “forward-looking statements” within the meaning of the federal securities laws, including Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. In this context, forward-looking statements often address future business and financial events, conditions, expectations, plans or ambitions, and often contain words such as “expect,” “anticipate,” “intend,” “plan,” “believe,” “seek,” “see,” “will,” “would,” “target,” similar expressions, and variations or negatives of these words, but not all forward-looking statements include such words. Forward-looking statements by their nature address matters that are, to different degrees, uncertain, such as statements about the consummation of the proposed transaction and the anticipated benefits thereof. All such forward-looking statements are based upon current plans, estimates, expectations and ambitions that are subject to risks, uncertainties and assumptions, many of which are beyond the control of the Company and Pioneer, that could cause actual results to differ materially from those expressed in such forward-looking statements. Important risk factors that may cause such a difference include, but are not limited to: the completion of the proposed transaction on anticipated terms and timing, or at all, including obtaining regulatory approvals that may be required on anticipated terms and Pioneer stockholder approval; anticipated tax treatment, unforeseen liabilities, future capital expenditures, revenues, expenses, earnings, synergies, economic performance, indebtedness, financial condition, losses, future prospects, business and management strategies for the management, expansion and growth of the combined company’s operations and other conditions to the completion of the proposed transaction, including the possibility that any of the anticipated benefits of the proposed transaction will not be realized or will not be realized within the expected time period; the ability of the Company and Pioneer to integrate the business successfully and to achieve anticipated synergies and value creation; potential litigation relating to the proposed transaction that could be instituted against the Company, Pioneer or their respective directors; the risk that disruptions from the proposed transaction will harm the Company’s or Pioneer’s business, including current plans and operations and that management’s time and attention will be diverted on transaction-related issues; potential adverse reactions or changes to business relationships resulting from the announcement or completion of the proposed transaction; rating agency actions and the Company and Pioneer’s ability to access short- and long-term debt markets on a timely and affordable basis; legislative, regulatory and economic developments, including regulatory actions targeting public companies in the oil and gas industry and changes in local, national, or international laws, regulations, and policies affecting the Company and Pioneer including with respect to the environment; potential business uncertainty, including the outcome of commercial negotiations and changes to existing business relationships during the pendency of the proposed transaction that could affect the Company’s and/or Pioneer’s financial performance and operating results; certain restrictions during the pendency of the proposed transaction that may impact Pioneer’s ability to pursue certain business opportunities or strategic transactions or otherwise operate its business; acts of terrorism or outbreak of war, hostilities, civil unrest, attacks against the Company or Pioneer, and other political or security disturbances; dilution caused by the Company’s issuance of additional shares of its common stock in connection with the proposed transaction; the possibility that the transaction may be more expensive to complete than anticipated, including as a result of unexpected factors or events; changes in policy and consumer support for emission-reduction products and technology; the impacts of pandemics or other public health crises, including the effects of government responses on people and economies; global or regional changes in the supply and demand for oil, natural gas, petrochemicals, and feedstocks and other market or economic conditions that impact demand, prices and differentials, including reservoir performance; changes in technical or operating conditions, including unforeseen technical difficulties; those risks described in Item 1A of the Company’s Annual Report on Form 10-K, filed with the SEC on February 22, 2023, and subsequent reports on Forms 10-Q and 8-K, as well as under the heading “Factors Affecting Future Results” on the Investors page of the Company’s website at www.exxonmobil.com (information included on or accessible through the Company’s website is not incorporated by reference into this communication); those risks described in Item 1A of Pioneer’s Annual Report on Form 10-K, filed with the SEC on February 23, 2023, and subsequent reports on Forms 10-Q and 8-K; and those risks described in the registration statement on Form S-4 and accompanying definitive proxy statement/prospectus available from the sources indicated above. References to resources or other quantities of oil or natural gas may include amounts that the Company or Pioneer believe will ultimately be produced, but that are not yet classified as “proved reserves” under SEC definitions.

These risks, as well as other risks associated with the proposed transaction, are more fully discussed in the definitive proxy statement/prospectus included in the registration statement on Form S-4 filed with the SEC and mailed to Pioneer stockholders in connection with the proposed transaction. While the list of factors presented here and the list of factors presented in the registration statement on Form S-4 and the definitive proxy statement/prospectus are considered representative, no such list should be considered to be a complete statement of all potential risks and uncertainties. Unlisted factors may present significant additional obstacles to the realization of forward-looking statements. We caution you not to place undue reliance on any of these forward-looking statements as they are not guarantees of future performance or outcomes and that actual performance and outcomes, including, without limitation, our actual results of operations, financial condition and liquidity, and the development of new markets or market segments in which we operate, may differ materially from those made in or suggested by the forward-looking statements contained in this communication. Neither the Company nor Pioneer assumes any obligation to publicly provide revisions or updates to any forward-looking statements, whether as a result of new information, future developments or otherwise, should circumstances change, except as otherwise required by securities and other applicable laws. Neither future distribution of this communication nor the continued availability of this communication in archive form on the Company’s or Pioneer’s website should be deemed to constitute an update or re-affirmation of these statements as of any future date.

Actions needed to advance the Company’s 2030 and 2035 greenhouse gas emission-reductions plans are incorporated into its medium-term business plans, which are updated annually. The reference case for planning beyond 2030 is based on the Company’s Energy Outlook research and publication (the “Outlook”). The Outlook is reflective of the existing global policy environment, the Outlook does not attempt to project the degree of required future policy and technology advancement and deployment for the world, or the Company, to meet net zero by 2050. As future policies and technology advancements emerge, they will be incorporated into the Outlook, and the Company’s business plans will be updated accordingly. Actual future results, including the achievement of net zero in Upstream Permian Basin unconventional operated assets by 2030/2035 and plans to lower methane emissions from operated assets, to increase water recycling in our combined Permian operations, and to feed hydrogen, ammonia, and carbon capture projects could vary depending on the ability to execute operational objectives on a timely and successful basis; policy support for emission-reduction products and technologies; changes in laws, regulations and international treaties regarding lower emission technologies and projects; government incentives; unforeseen technical or operational difficulties; the outcome of research efforts and future technology developments, including the ability to scale projects, technologies, and markets on a commercially competitive basis; changes in supply and demand and other market factors affecting future prices of oil, gas, and petrochemical products; the actions of competitors; and other factors discussed in this communication and in the additional forward looking statement disclaimer included above.

All references to production rates, project capacity, resource size, and acreage are on a gross basis, unless otherwise noted.