Benson Hill SPAC Presentation Deck

BENSON HILL Disclaimer This presentation is provided for informational purposes only and has been prepared to assist interested parties in making their own evaluation with respect to the proposed business combination (the "Business Combination") between Star Peak Corp II ("Star Peak II") and Benson Hill, Inc. ("Benson Hill") and for no other purpose. No representations or warranties, express or implied are given in, or in respect of, this presentation. To the fullest extent permitted by law in no circumstances will Star Peak II, Benson Hill or any of their respective subsidiaries, stockholders, affiliates, representatives, partners, directors, officers, employees, advisers or agents be responsible or liable for any direct, indirect or consequential loss or loss of profit arising from the use of this presentation, its contents, its omissions, reliance on the information contained within it, or on opinions communicated in relation thereto or otherwise arising in connection therewith. Industry and market data used in this presentation have been obtained from third-party industry publications and sources as well as from research reports prepared for other purposes. None of Star Peak Il or Benson Hill has independently verified the data obtained from these sources and cannot assure you of the data's accuracy or completeness. This data is subject to change. In addition, this presentation does not purport to be all-inclusive or to contain all of the information that may be required to make a full analysis of Benson Hill or the Business Combination. Viewers of this presentation should each make their own evaluation of Benson Hill and of the relevance and adequacy of the information and should make such other investigations as they deem necessary. PAST PERFORMANCE IS NO GUARANTEE OF FUTURE PERFORMANCE. The recipient of this presentation acknowledges that it is (a) aware that United States securities laws prohibit any person who has material, non-public information concerning a company from purchasing and selling securities of such company or from communicating such information to any other person under circumstances in which it is reasonably foreseeable that such person may purchase or sell such securities and (b) that the recipient will neither use, nor cause any third party to use, this investor presentation or any information contained herein in violation of the Securities Exchange Act of 1934, as amended, including, without limitation, Rule 10b-5 thereunder. 2 Forward-Looking Statements Certain statements in this presentation may be considered "forward-looking statements" within the meaning of the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements generally relate to future events or Star Peak Il's or Benson Hill's future financial or operating performance. These forward-looking statements include, but are not limited to, statements regarding estimates and forecasts of other financial and performance metrics, projections of market opportunity and anticipated financial impacts of the proposed business combination between Star Peak II and Benson Hill (the "Business Combination"). In some cases, you can identify forward-looking statements by terminology such as "may," "should," "expect," "intend," "will," "estimate," "anticipate," "believe," "predict," or the negatives of these terms or variations of them or similar terminology. Such forward-looking statements are subject to risks, uncertainties, and other factors which could cause actual results to differ materially from those expressed or implied by such forward-looking statements. These forward-looking statements are based upon estimates and assumptions that, while considered reasonable by Star Peak II and its management, and Benson Hill and its management, as the case may be, are inherently uncertain factors that may cause actual results to differ materially from current expectations include, but are not limited to: 1) the occurrence of any event, change or other circumstances that could give rise to the termination of the definitive merger agreement with respect to the Business Combination; 2) the outcome of any legal proceedings that may be instituted against Star Peak II, the combined company or others following the announcement of the Business Combination and any definitive agreements with respect thereto; 3) the inability to complete the Business Combination due to the failure to obtain approval of the stockholders of Star Peak II, to obtain financing to complete the Business Combination or to satisfy other conditions to closing; 4) changes to the proposed structure of the Business Combination that may be required or appropriate as a result of applicable laws or regulations or as a condition to obtaining regulatory approval of the Business Combination; 5) the ability to meet the New York Stock Exchange's listing standards following the consummation of the Business Combination; 6) the risk that the Business Combination disrupts current plans and operations of Benson Hill as a result of the announcement and consummation of the Business Combination; 7) the ability to recognize the anticipated benefits of the Business Combination, which may be affected by, among other things, competition, the ability of the combined company to grow and manage growth profitably, maintain relationships with customers and suppliers and retain its management and key employees; 8) costs related to the Business Combination; 9) changes in applicable laws or regulations; 10) the possibility that Benson Hill or the combined company may be adversely affected by other economic, business and/or competitive factors; 11) Benson Hill's estimates of its financial performance; 12) the impact of the COVID-19 pandemic and its effect on business and financial conditions; and 13) other risks and uncertainties set forth in the sections entitled "Risk Factors" and "Cautionary Note Regarding Forward-Looking Statements" in Star Peak Il's Annual Report on Form 10-K for the year ended December 31, 2020 and Quarterly Report on Form 10-Q for the three months ended March 31, 2021, filed with the SEC on March 31, 2021 and May 24, 2021, respectively, in the Registration Statement containing the proxy statement / consent solicitation statement / prospectus relating to the Business Combination, and other documents filed or to be filed with the SEC by Star Peak II. Nothing in this presentation should be regarded as a representation by any person that the forward-looking statements set forth herein will be achieved or that any of the contemplated results of such forward- looking statements will be achieved. There may be additional risks that Star Peak II and Benson Hill presently do not know or that Star Peak II and Benson Hill currently believe are immaterial that could also cause actual results to differ from those contained in the forward-looking statements. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. Neither Star Peak Il nor Benson Hill undertakes any duty to update these forward-looking statements, except as otherwise required by law.