investor.relations@exxonmobil.com. Copies of the documents filed with
the SEC by Pioneer 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
ExxonMobil, 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 is set forth in its proxy statement for its 2023 annual meeting of stockholders,
which was filed with the SEC on April 13, 2023, in its Form 10-K for the year ended December 31, 2022, which was filed with the SEC on
February 23, 2023, in its Form 8-K filed on May 30, 2023, in its Form 8-K filed on April 26, 2023 and in its Form 8-K filed on February
13, 2023. Information about the directors and executive officers of ExxonMobil is set forth in its proxy statement for its 2023
annual meeting of stockholders, which was filed with the SEC on April 13, 2023, in its Form 10-K for the year ended December 31, 2022,
which was filed with the SEC on February 22, 2023, in its Form 8-K filed on June 6, 2023 and in its Form 8-K filed on February 24, 2023.
Additional information regarding the participants in the proxy solicitations and a description of their direct or indirect interests,
by security holdings or otherwise, will be contained in the proxy statement/prospectus and 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
|