questions during the meeting by visiting www.proxypush.com/STEP. You will also be able to vote your shares electronically at the AnnualSpecial Meeting by visiting www.proxypush.com/STEP and clicking the appropriate link from the AnnualSpecial Meeting platform. A list of stockholders of record will be available online during the Annual Meeting, which stockholders will be able to view by referring to the Annual Meeting platform. In addition, duringDuring the ten days prior to the AnnualSpecial Meeting, a list of stockholders of record will be available at our principal executive offices located at 450 Lexington277 Park Avenue, 3145^stth Floor, New York, New York 10017. If, as a result of the COVID-19 pandemic, our offices are not generally open to access by the public during the ten days prior to the Annual Meeting, stockholders may request to review a list of stockholders of record as of July 19, 2022, the record date for the Annual Meeting, for any purpose germane to the Annual Meeting by contacting Shareholder Relations at shareholders@stepstonegroup.com. 10172.

To attend the AnnualSpecial Meeting, vote, or submit questions or view the list of registered stockholders during the AnnualSpecial Meeting, you must first register for the AnnualSpecial Meeting in advance by visiting www.proxydocs.com/STEP. Upon completing your registration, you will receive a confirmation email, which will include additional information about virtually attending the AnnualSpecial Meeting. For additional details, see “—How can I attend, participate in and vote at the AnnualSpecial Meeting online?” in the “Questions“Information About the Special Meeting and Answers”Voting” section below. This proxy statement provides detailed information about the AnnualSpecial Meeting. We encourage you to read this proxy statement carefully and in its entirety. When accessing our AnnualSpecial Meeting, please allow ample time for online check-in, which will begin at 12:454:15 p.m. Eastern Time on Wednesday, September 14, 2022.[13], 2024. If you experience technical difficulties during the check-in process or during the AnnualSpecial Meeting, please call the phone number provided in your confirmation email for assistance.

Your vote is important. Regardless of whether you participate in the AnnualSpecial Meeting, we hope you vote as soon as possible. You may vote online or by phone, or, if you received paper copies of the proxy materials by mail, you may also vote by mail by following the instructions on the proxy card or voting instruction card. Voting online or by phone, written proxy or voting instruction card ensures your representation at the AnnualSpecial Meeting regardless of whether you attend our virtual AnnualSpecial Meeting online.

By Order of the Board of Directors,

Jennifer Y. Ishiguro

Chief Legal Officer & Secretary New

New York, NY

July 27, 2022[___], 2024

at this Annual Meeting. Directors up for reelection at this Annual Meeting may be elected to a new three-year term expiring in 2025. Directors designated as Class III directors have initial terms expiring at our 2023 Annual Meeting of Stockholders. Directors designated as Class I directors have terms expiring at our 2024 Annual Meeting of Stockholders. Each director whose term expires at the 2023 Annual Meeting of Stockholders or any Annual Meeting of Stockholders thereafter (and any other individual who is nominated for election at any such meeting) shall be elected for a term expiring at the next Annual Meeting of Stockholders. As a result of these provisions, beginning with our 2025 Annual Meeting of stockholders, all of our directors will be subject to annual election.

Pursuant to the Stockholders Agreement described under “Related Person Transactions—Transactions in Connection with our Reorganization and Initial Public Offering—Stockholders Agreement,” certain Class A stockholders, Class B stockholders and Class C unitholders have entered into a Stockholders Agreement pursuant to which they agreed to vote all theirrecord date, there were 64,221,399 shares of voting stock, includingour Class A common stock and 46,314,543 shares of our Class B common stock togetherissued and in accordance with the instructionsoutstanding. Pursuant to our certificate of theincorporation, holders of Class A and Class B Committee (as defined in the Stockholders Agreement), including with respectcommon stock are not entitled to nominations for director.cumulative voting.

The following table sets forth information with respect to our directors as of the record date:

Nominees for Election to a Three-Year Term Expiring at the 2025 Annual Meeting of Stockholders

Jose A. Fernandez has served as the Company’s Co-Chief Operating Officer since November 2019 and as a director since September 2020. He co-founded the Partnership in 2007 as Partner, General Counsel and Chief Compliance Officer. He served as the Partnership’s General Counsel and Chief Compliance Officer until October 2010 when he was succeeded by Jason Ment so that he could focus on his business role. In March 2017, he became the Partnership’s Chief Operating Officer. He served in that role until he began sharing the role with Mr. Ment as Co-Chief Operating Officer in July 2018. Prior to co-founding the Partnership in 2007, Mr. Fernandez served as Managing Director and General Counsel at Pacific Corporate Group LLC from 2004 to 2006, where he was responsible for all legal and compliance activities, as well as research on emerging managers. From 2001 to 2004, Mr. Fernandez was an Associate at the law firm of Latham & Watkins LLP. At

Latham & Watkins, Mr. Fernandez was a member of the Private Equity/Investment Fund Practice Group where he organized and represented private equity, venture capital, and buy-out funds. From 1997 to 2001, Mr. Fernandez was an Associate at the law firm of Curtis, Mallet-Prevost, Colt & Mosle LLP. Mr. Fernandez received his BA from the University of Michigan and his JD from Stanford Law School. Mr. Fernandez brings to our board of directors his extensive experience in private markets investments and his deep understanding of our operations.

Thomas Keck has served as a member of our board of directors since September 2020. Mr. Keck co-founded the Partnership in 2007 as Partner and leads the Partnership’s global research and portfolio management activities, and the development of StepStone Private Market Intelligence. He is also involved in our responsible investment and risk management initiatives. Prior to co-founding the Partnership in 2007, from 2005 to 2006, Mr. Keck was a managing director at Pacific Corporate Group LLC. From 2000 to 2005, Mr. Keck was a principal with Blue Capital Management L.L.C., a middle market buyout firm, and from 1997 to 2000, he was a consultant at McKinsey & Company. Mr. Keck formerly served on the board of directors for Porter Athletic Equipment Company, and currently serves on the board of Trio Health, Inc. He also currently serves on the Research Advisory Council of the Institute for Private Capital, as well as the Private Equity Advisory Council of the University of Chicago Booth School of Business. Mr. Keck received his BA from George Washington University and his MBA from the University of Chicago Booth School of Business. He served in the U.S. Navy as a Naval Flight Officer, receiving numerous decorations flying EA-6Bs off the USS Nimitz (CVN-68) from 1988 to 1995. Mr. Keck brings to our board of directors extensive experience in private market investments.

Michael I. McCabe has served as our Head of Strategy since November 2019 and as a member of our board of directors since September 2020. Mr. McCabe has served as Head of Strategy of the Partnership since May 2017. He has been Partner of the Partnership since October 2010. He is a member of the private equity team and is involved with various investment and risk management activities. Prior to joining the Partnership in 2010, Mr. McCabe served as a Vice President at Hamilton Lane Advisors L.L.C., where he was the co-head of secondary and co-investment funds from 2005 to 2008. From 1995 to 2005, Mr. McCabe served as Director at CEMEX S.A.B de C.V., a publicly held company, where he focused on due diligence and financial analysis of capital investments, as well as strategic mergers and acquisitions. Mr. McCabe received a BA from Drexel University and an MBA from Columbia University. Mr. McCabe brings to our board of directors his extensive experience in private markets investments and his deep knowledge of our strategies.

Steven R. Mitchell has served as a member of our board of directors since September 2020, and has served as a director of the Partnership since its founding in January 2007. Mr. Mitchell has served as the Chief Executive Officer of Argonaut Private Capital L.P., a private equity investment firm, since July 2016, and from November 2004 to July 2016, he was the Managing Director of Argonaut Private Equity, LLC, a private equity investment firm. Prior to joining Argonaut Private Equity, LLC, Mr. Mitchell was a principal in both Radical Incubation, a private equity investment firm, and 2929 Entertainment, LLC, a media company. Mr. Mitchell currently serves on the board of directors of Aspen Aerogels, Inc., a public company listed on the New York Stock Exchange and Alkami Technology, Inc. a public company listed on the Nasdaq. He also currently serves on the boards of directors of several privately owned companies, including Mammoth Carbon Products, LLC, Cypress Environmental Services, LLC, JAC Holding Enterprises, Inc., SEF Energy, LLC, MT Group Holdings, LLC, Mark Young Construction, LLC and American Cementing, LLC. From 1996 to 1999, Mr. Mitchell was a corporate attorney at Gibson, Dunn & Crutcher LLP. Mr. Mitchell received his BBA from Baylor University and his JD from the University of San Diego School of Law. Mr. Mitchell brings to our board of directors his public company board experience and his experience with private investments.

Directors Continuing in Office Until the 2023 Annual Meeting of Stockholders

Scott W. Hart has served as the Chief Executive Officer of the Company and Partnership since January 2022 and as a member of our board of directors since September 2020. Mr. Hart has also served as the Co-Chief Executive Officer of the Company and the Partnership between August 2019 and December 2021. He also is a

member of the Partnership’s Global Executive Committee, Private Equity Executive Committee, Private Equity Investment Committee and Private Equity Portfolio and Risk Management Committee. He has held a number of responsibilities over time, managing a number of important client relationships, serving as Co-Head of Private Equity Co-Investments between January 2013 to October 2019 and helping with opening the firm’s London office. Prior to joining the Partnership in 2007, Mr. Hart was an Associate at TPG Capital, LP from 2005 to 2007. While at TPG Capital LP, Mr. Hart focused on evaluating, executing and monitoring investments for a private equity fund, as well as helping to develop views on investment thesis, valuation, financing and exit strategy. From 2003 to 2005, Mr. Hart worked as an Analyst at Morgan Stanley in the Consumer & Retail group, where he performed financial and strategic analysis on acquisitions, leveraged buy-outs, divestitures, and debt and equity capital markets transactions. Mr. Hart received his BBA from the University of Notre Dame. Mr. Hart brings to our board of directors his extensive experience in private markets investments and the perspective of our Chief Executive Officer.

David F. Hoffmeister has served as a member of our board of directors since September 2020. He served as the Senior Vice President and Chief Financial Officer of Life Technologies Corporation, a global life sciences company, from 2008 to 2014 when it was acquired by Thermo Fisher Scientific Inc. From 2004 to 2008, he served as Chief Financial Officer of Invitrogen Corporation, which merged with Applied Biosystems in 2008 to form Life Technologies Corporation. Prior to joining Invitrogen, Mr. Hoffmeister spent 20 years with McKinsey & Company as a senior partner serving clients in the healthcare, private equity and chemical industries on issues of strategy and organization. Before joining McKinsey & Company, he held financial positions at GTE Corp. and W.R. Grace and Co. Mr. Hoffmeister currently serves on the boards of directors of Celanese Corporation (since 2006), Glaukos Corporation (since 2014) and ICU Medical, Inc. (since 2018). He also serves on the boards of directors of Kaiser Foundation Hospitals and Kaiser Foundation Health Plan, Inc. Mr. Hoffmeister received his BS from the University of Minnesota and his MBA from the University of Chicago. Mr. Hoffmeister brings to our board of directors his strong finance background, experience as a chief financial officer of a global biotechnology company and as a senior partner of a global managing consulting firm advising on strategic matters, and public company board and audit committee experience.

Anne L. Raymond has served as a member of our board of directors since September 2020. She has had a 35-year career in real estate finance and investment management. From 2000 to 2017, she held senior leadership positions and served on the firmwide Investment Committees at Crow Holdings—a privately-owned real estate investment and development firm with a 70-year history and proven track record of performance. She retired in 2017 as President of Crow Holdings Capital, a Registered Investment Advisor managing capital on behalf of global investors in private equity real estate funds and diversified investment portfolios on behalf of ultra-high-net-worth families. In addition, from 2000 to 2017, she was Managing Director of Crow Family Holdings—owner of national development companies Trammell Crow Residential and Crow Holdings Industrial. Prior to her tenure at Crow Holdings, from 1995 to 1998, she served as Executive Vice President and Chief Financial Officer at Wyndham International, Inc., an upscale and luxury hotel and resort company—leading its initial public offering in 1996. Ms. Raymond currently serves on the boards of directors of Crow Holdings and Trammell Crow Residential Company, as well as DFW Teach for America and Lone Star Big Brothers Big Sisters. She is also a member of American Enterprise Institute’s National Council and the Executive Advisory Council of the George W. Bush Presidential Center. Ms. Raymond received her BS from the University of Missouri. Ms. Raymond brings to our board of directors her extensive experience in private market investments in real estate and other asset classes, in addition to her financial acumen.

Nominees for Election to a Three-Year Term Expiring at the 2024 Annual Meeting of Stockholders

Monte M. Brem has served as the Company’s Executive Chairman since January 2022 and as Chairman of the Board since November 2019. He served as the Company’s Co-Executive Officer between November 2019 and January 2022 when he transitioned to the Executive Chairman role. He also served as the Partnership’s Chief Executive Officer and a director since he co-founded StepStone in January 2007 until he became its Co-Chief Executive Officer together with Mr. Hart in August 2019, serving in that role through December 2021. From

2002 to 2005, prior to co-founding StepStone, Mr. Brem served as Managing Director and Principal and eventually President at Pacific Corporate Group LLC, a private equity investment firm that oversaw approximately $15 billion of commitments from institutional clients. As Managing Director and Principal, Mr. Brem was responsible for sourcing and executing direct investment transactions for the PCG Corporate Partners Fund and PCG Co-investment Fund. While serving as President, Mr. Brem oversaw all aspects of Pacific Corporate Group’s global fund investment business. Earlier in his career, Mr. Brem was an Associate at the law firm of Gibson, Dunn & Crutcher LLP, where he focused on complex corporate transactions and corporate governance matters. Mr. Brem received his BA from San Diego State University and his JD and MBA from the University of San Diego. He is a member of the state bar of California (inactive status). Mr. Brem brings to our board of directors his extensive experience in private markets investments, deep familiarity with our business and the perspective of our former Co-Chief Executive Officer.

Valerie G. Brown has served as a member of our board of directors since April 2021. Most recently, from 2016 to 2019, Ms. Brown served as the Executive Chairman of the board of directors of Advisor Group, Inc., one of the largest wealth management firms supporting independent financial advisors in the United States (“Advisor Group”), and was Chief Executive Officer of Cetera Financial Group from 2010 to 2014. Prior to joining Cetera Financial Group, Ms. Brown held a number of executive and senior leadership positions at ING, a global financial services company, as well as Taco Bell Worldwide, Bain & Company and Chevron. Ms. Brown currently serves on the board of directors of Advisor Group, AmWINS Group, Inc., a wholesale distributor of specialty insurance products and services, Jackson Hole Airport and Protect Our Water Jackson Hole. Ms. Brown received her BS from Oregon State University and her MBA from Stanford University. Ms. Brown brings to our board of directors a wealth of experience in the financial services and wealth management industries, in addition to her financial acumen.

Director Independence

Our Nominating and Corporate Governance Committee and our board have conducted their annual review of the independence of each director nominee under the applicable Nasdaq and SEC independence standards. Based upon the Nominating and Corporate Governance Committee’s recommendation and our board’s own review and assessment, our board has affirmatively determined in its business judgment that each of Valerie G. Brown, David F. Hoffmeister and Anne L. Raymond is “independent” as defined under the Nasdaq rules and Rule 10A-3 under the Securities and Exchange Act of 1934, as amended (the “Exchange Act”).

Board Leadership Structure

Our board annually reviews its leadership structure to evaluate whether the structure remains appropriate for the Company. Our board does not have a policy on whether the role of Chairman and Chief Executive Officer should be separate or combined and regularly reviews its leadership structure. After careful consideration, the Board determined that, at this time, having separate chief executive officer and chair roles is best for us and our stockholders. As chief executive officer, Mr. Hart is responsible for developing and overseeing the implementation of our business strategy as well as leading and managing the day-to-day operations of the Company. With Mr. Brem serving as Executive Chairman, the Company continues to leverage Mr. Brem’s experience. In Mr. Brem’s role as Chairman of the Board, Mr. Brem focuses on board oversight and governance matters, and serves as the liaison between the board and management, working closely with our directors and our Chief Executive Officer. Our board believes that our existing board leadership structure provides the most effective and efficient leadership for the Company at this time. The board recognizes that no single leadership model is right for all companies and at all times, and will continue to evaluate whether to split or combine the roles to ensure our leadership structure continues to be in the best interests of the Company and our stockholders.

Executive Sessions

In order to promote open discussion among independent directors, our board holds executive sessions of independent directors at least quarterly. These executive sessions are chaired by a director selected by the independent directors during such sessions.

Board Qualifications & Diversity

The Nominating and Corporate Governance Committee periodically reviews, and recommends to our board, the skills, experience, characteristics and other criteria for identifying and evaluating directors. Our board expects directors to be open and forthright, to develop a deep understanding of the Company’s business, and to exercise sound judgment and courage in fulfilling their oversight responsibilities. Directors should embrace the Company’s values and culture and should possess the highest levels of integrity.

The Nominating and Corporate Governance Committee evaluates the composition of our board annually to assess whether the skills, experience, characteristics and other criteria established by our board are currently represented on our board as a whole, and in individual directors, and to assess the criteria that may be needed in the future in light of the Company’s anticipated needs. Our board of directors and the Nominating and Corporate Governance Committee also actively seek to achieve a diversity of occupational and personal backgrounds on the Board, including diversity with respect to demographics such as gender, race, ethnic and national background, geography, age and sexual orientation. As part of the search process for each new director, the Nominating and Corporate Governance Committee includes members of underrepresented groups such as women, ethnic/racial minorities and LGBTQ in the pool of candidates (and instructs any search firm the Nominating and Corporate Governance Committee engages to do so), and interviews at least one woman and one racial or ethnic minority candidate.

Directors who are Military Veterans: 1

The Nominating and Corporate Governance Committee reviews the qualifications of director candidates and incumbent directors in light of the criteria approved by our board and recommends the Company’s candidates to our board for election by the Company’s stockholders at the applicable annual meeting. We also assess qualifications and characteristics of our directors, including racial and ethnic diversity, as part of our board’s annual self-evaluation process. We believe our board is well positioned to provide effective oversight and strategic advice to our management.

Procedures for Recommending Individuals to Serve as Directors

The Nominating and Corporate Governance Committee also considers director candidates recommended by our stockholders. Any stockholder who wishes to propose director nominees for consideration by our Nominating and Corporate Governance Committee, but does not wish to present such proposal at an annual meeting of stockholders, may do so at any time by sending each proposed nominee’s name and a description of his or her qualifications for board membership to the chair of the Nominating and Corporate Governance Committee by

sending an email to shareholders@stepstonegroup.com or in writing, c/o our Chief Legal Officer & Secretary, at StepStone Group Inc., 450 Lexington Avenue, 31^st Floor, New York, New York 10017. The recommendation should contain all of the information regarding the nominee required under the “advance notice” provisions of our amended and restated bylaws (“bylaws”) (which can be provided free of charge upon request by writing to our Chief Legal Officer & Secretary at the address listed above). The Nominating and Corporate Governance Committee evaluates nominee proposals submitted by stockholders in the same manner in which it evaluates other director nominees.

Committees of the Board of Directors

Our board established an Audit Committee, a Compensation Committee and a Nominating and Corporate Governance Committee. These committees are each described below. Each of our board’s committees acts under a written charter, which was adopted and approved by our board of directors. Copies of the committees’ charters are available on our website at https://shareholders.stepstonegroup.com/corporate-governance.

Committee Membership; Meetings and Attendance

Between April 1, 2021 and March 31, 2022:

Each of our incumbent directors attended at least 75% of the meetings of our board of directors and the respective committees of which he or she was a member held during the period such incumbent director was a director during the fiscal year ended March 31, 2022 (“fiscal 2022”).

Directors are expected to attend the Annual Meeting absent unusual circumstances. All directors then serving attended the 2021 Annual Meeting of Stockholders.

Audit Committee

Our Audit Committee consists of Ms. Brown, Mr. Hoffmeister and Ms. Raymond. Mr. Hoffmeister serves as the chair of the Audit Committee. Each of Ms. Brown, Mr. Hoffmeister and Ms. Raymond qualifies as an “independent” director for purposes of the SEC and Nasdaq independence rules that are applicable to audit committee members. Each of Ms. Brown, Mr. Hoffmeister and Ms. Raymond qualifies as an “audit committee financial expert” as defined by the SEC. Our Audit Committee, among other things, has responsibility for:

Compensation Committee

Our Compensation Committee consists of Messrs. Brem and Hart. Mr. Brem serves as the chair of the Compensation Committee. As a controlled company, we rely upon the exemption from the Nasdaq requirement that we have a compensation committee composed entirely of independent directors. Our Compensation Committee, among other things, has responsibility for:

Nominating and Governance Committee

Our Nominating and Corporate Governance Committee consists of Messrs. Brem and Hart. Mr. Hart serves as the chair of the Nominating and Corporate Governance Committee. As a controlled company, we rely upon the exemption from the Nasdaq requirement that we have a nominating and corporate governance committee composed entirely of independent directors or that our director nominees be otherwise selected or recommended to the board by independent directors. Our Nominating and Corporate Governance Committee, among other things, has responsibility for:

Risk Oversight

Our board of directors believes that effective risk management and control processes are critical to StepStone’s safety and soundness, our ability to predict and manage the challenges that StepStone may face and, ultimately, StepStone’s long-term corporate success.

In general, management is responsible for the day-to-day oversight and management of strategic, operational, legal, compliance, cybersecurity and financial risks, while our board of directors, as a whole and through its committees, is responsible for the oversight of our risk management framework. Consistent with this approach, management reviews both the framework and certain specific risks with our board and Audit Committee at regular board and Audit Committee meetings as part of management presentations that focus on particular business functions, operations, or strategies, and presents steps taken by management to eliminate or mitigate such risks. While our board is ultimately responsible for the risk oversight of our Company, our Audit Committee has primary responsibility for management and mitigation of the risks facing our Company, including major financial, cybersecurity and control risks, and oversight of the measures initiated by management to monitor and control such risks.

Our Audit Committee also monitors compliance with legal and regulatory requirements and considers and approves or disapproves any related person transactions. Our Compensation Committee has responsibility to review the risks arising from our compensation policies and practices applicable to all employees and evaluate policies and practices that could mitigate any such risk. Our Nominating and Corporate Governance Committee has responsibility to review risks relating to our corporate governance practices. These committees provide regular reports on our risk management practices to our full board, as necessary. Our board believes that the Company’s current leadership structure supports its risk oversight function.

Communications with Directors

Stockholders and other interested parties who wish to communicate with our board or any individual director may do so by sending an email to shareholder@stepstonegroup.com or in writing, c/o our Chief Legal Officer & Secretary, at StepStone Group Inc., 450 Lexington Avenue, 31^st Floor, New York, New York 10017. Communications we receive that relate to accounting, internal accounting controls, auditing matters or securities law matters will be referred to the Audit Committee unless the communication is directed otherwise. You may communicate anonymously and/or confidentially. Each communication will be reviewed by our Chief Legal Officer & Secretary to determine whether it is appropriate for presentation to our board or the applicable director(s). The purpose of this screening is to allow our board (or the applicable individual director(s)) to avoid having to consider irrelevant or inappropriate communications (such as advertisements, solicitations, product inquiries or any offensive or otherwise inappropriate materials).

Code of Business Conduct and Ethics

Our board adopted a Code of Conduct and Ethics (the “Code”) relating to the conduct of our business by all of our employees, executive officers (including our principal executive officers, principal financial officer and principal accounting officer (or persons performing similar functions)), and directors. This Code satisfies the requirement that we have a “code of conduct” under the Nasdaq and SEC rules and is available on our website at https://shareholders.stepstonegroup.com/corporate-governance. To the extent required under the listing rules and SEC rules, we intend to disclose future amendments to certain provisions of this Code, or waivers of such provisions, applicable to any of our executive officers or directors, on our website identified above.

Corporate Governance Guidelines

Our board also adopted principles of corporate governance to formalize its governance practices, which serve as a framework within which our board of directors and its committees operate. These principles cover a number of areas, including the role of our board of directors, board composition and leadership structure, director independence, director selection, qualification and election, director compensation, executive sessions, Chief Executive Officer evaluations, succession planning, annual board assessments, board committees, director orientation and continuing education, stockholder engagement and others. A copy of our corporate governance guidelines is available on our website at https://shareholders.stepstonegroup.com/corporate-governance.

Compensation Committee Interlocks and Insider Participation

Messrs. Brem and Hart were members of our Compensation Committee during fiscal 2022. Mr. Hart is an executive officer of the Company and Mr. Brem is a non-executive officer. None of our executive officers currently serves, or has served during the last completed fiscal year, as a member of the board of directors or compensation committee (or other committee performing equivalent functions) of any other entity that has one or more executive officers serving on our board of directors or compensation committee.

Prohibitions and Restrictions on Hedging and Pledging Transactions

Our Insider Trading Policy prohibits our (i) directors and officers and members of their immediate families and households and their controlled entities (i.e., corporations or other business entities controlled or managed by any such person, and trusts or other entities for which any such person is the trustee or in which any such person has a beneficial pecuniary interest) as well as, (ii) subject to their ability to request an exemption in limited circumstances (1) the Chief Compliance Officer, the Global Head of Human Resources, the Head of Tax and the Head of Fund Accounting, (2) partners and other personnel more likely to be in possession of material non-public information,(3) certain personnel regularly involved in the preparation or review of the Company’s financial statements and (4) certain other employees who are so designated from time to time, as well as in the case of clauses (1) – (4), members of their immediate families and households and their controlled entities from entering

from purchasing financial instruments (including, but not limited to, prepaid variable forward contracts, equity swaps, collars, and exchange funds) and from otherwise engaging in transactions that hedge or offset, or are designed to hedge or offset, any decrease in the market value of StepStone securities granted to any such person by us as part of such person’s compensation or held, directly or indirectly, by such person. Similarly, persons listed in clause (i) and, subject to their ability to request an exemption in limited circumstances, persons listed in clause (ii) are also prohibited from pledging StepStone securities as collateral for a loan.

Fiscal 2022 Director Compensation

Our policy is to pay director compensation only to directors whom we deem independent. We have adopted a program for compensating our independent directors with a combination of cash and equity.

Annual Retainer. Prior to September 24, 2021, the date of our 2021 annual meeting of stockholders, all independent directors were eligible to receive a $125,000 annual retainer for serving as a member of the board of directors. As of September 24, 2021, all independent directors were eligible to receive a $128,750 annual retainer. After the Annual Meeting, the annual retainer for all independent directors will be increased to $150,000. All annual retainers are pro-rated for any partial year of service. Fifty percent of the annual retainer is payable in the form of restricted stock units (“RSUs”) and the remaining fifty percent is payable, at the election of such director, in the form of cash or RSUs.

Audit Committee Chair Retainer. In addition to the annual retainer, prior to September 24, 2021, the chair of the Audit Committee was eligible to receive an additional $15,000 annual retainer. As of September 24, 2021, the chair of the Audit Committee was eligible to receive an additional $15,450 annual retainer. After the Annual meeting, the additional annual retainer for the chair of the Audit Committee will be increased to $25,000. Fifty percent of such retainer is payable in the form of RSUs and the remaining fifty percent is payable, at the election of the director, in the form of cash or RSUs.

RSUs. All RSUs granted to directors vest in full based on continuous service as a member of the board of directors through the earlier of 12 months following the date of grant and the date of our next annual meeting of stockholders.

All members of the board of directors are reimbursed for reasonable costs and expenses incurred in attending meetings of our board of directors.

The table below describes the compensation provided to our non-executive directors in fiscal 2022. The table excludes Messrs. Brem, Fernandez, McCabe and Hart because they each served as executive officers during fiscal 2022 but did not receive separate compensation for their additional service as directors during that time period. In accordance with the director compensation program, on September 24, 2021, the board of directors approved the RSU grants to each independent director. In addition, in connection with her appointment on April 12, 2021, Ms. Brown was granted a pro-rated RSU award for her service through the 2021 annual meeting.

ESG in Our Corporate Operations

Diversity, Equity and Inclusion

We value diversity among our staff and leadership, recognizing that through diversity, we gain a variety of perspectives, views, and ideas which strengthen our ability to strategize, communicate, and deliver on our mission. In 2017, we developed a global Diversity, Equity & Inclusion Committee comprising senior and mid-level members of StepStone across functions and asset classes, to evaluate our current diversity efforts, lead new initiatives to improve diversity, equity and inclusion at our firm, and to continuously improve upon our policies and culture.

Our mission statement on why diversity and inclusion matter states:

We believe that a diverse and inclusive workforce improves the investment process because the different life experiences, backgrounds and insights of our professionals can be leveraged to perform more effective diligence and analysis. This belief is supported by research showing that diversity and inclusiveness contributes to better performing and more sustainable businesses. To build a diverse workforce, we are focused on expanding our recruiting processes and outreach to broaden our pipeline of potential candidates. These efforts allow us to build more diverse slates of prospective new hires.

Talent development and retention are also key components of our diversity, equity and inclusion efforts, including our focus on growing and developing strong mid-level talent into senior roles. In addition to our mentorship program, we have a sponsorship program that includes high performing and high potential mid-career female and diverse professionals and provides them with rigorous developmental tools, 360-degree assessments, education and executive coaching opportunities alongside their sponsor. We have also continuously reviewed and expanded our parental leave policies and related benefits.

Building awareness and engagement around the importance of diversity, equity and inclusion, both internally and externally, represents another core tenet of our efforts. As an example, the StepStone Diversity, Equity and Inclusion Network provides networking and educational opportunities to all of our employees globally. In addition, our employees launched our first four Employee Resource Groups (“ERGs”) focused on the LatinX, LGBTQ+, Pan Asian and parental communities and their allies, and we expect additional ERGs to be formed in the future.

Finally, StepStone is a strong supporter of several organizations that advocate for further diversity in our industry. For example, we are a strong supporter of the Robert Toigo Foundation, whose mission is to increase the participation of minorities in the financial industry. In addition, we proactively network with affinity organizations at universities and business schools to develop a pipeline of female and minority candidates for consideration. We also participate in industry groups created to improve diversity among private markets professionals, such as Girls Who Invest, Women’s Association of Venture & Equity (WAVE), SEO (Seizing Every Opportunity) Alternative Investments, Private Equity Women Investor Network (PEWIN), Making the Leap and Level20 Women in Private Equity.

Reducing Our Carbon Footprint

We are focused on StepStone’s carbon footprint as we seek carbon neutrality as a stated Company goal. As such, the following efforts have been undertaken:

Additionally, in May 2022, we released our 2021 ESG Report outlining many of our ESG activities, including with respect to diversity, equity and inclusion, as well as our 2021 Taskforce on Climate-Related Financial Disclosures Report.

Community Engagement

We encourage and support community engagement. Our community program uses a global-and-local approach and is driven by our community involvement teams at many of our offices. Projects are organized locally and partnered with various service organizations within our communities dedicated to causes encompassing public service, education, environmental efforts, healthcare, and military veterans. Additionally,

we have implemented a volunteer time off policy that gives employees 16 hours per calendar year of paid time to volunteer at the organization of their choice. We actively monitor participation in these programs. We have also established a formalized charitable giving program with an employee matching component. Recently, our Community Engagement Committee has encouraged employee contributions and volunteer efforts toward Ukraine’s relief and recovery efforts.

PROPOSAL 1—ELECTION OF DIRECTORS

There are four Class II directors whose term of office expires at the Annual Meeting. Our Nominating and Corporate Governance Committee has recommended, and our board has approved, Jose A. Fernandez, Thomas Keck, Michael I. McCabe, and Steven R. Mitchell as nominees for election as Class II directors at the Annual Meeting. If elected at the Annual Meeting, each nominee will serve until the 2025 Annual Meeting of Stockholders or until his or her successor has been duly elected and qualified, or, if sooner, until his or her earlier death, resignation, retirement, disqualification or removal. Information concerning these nominees and other continuing directors appears under the “—Composition of the Board of Directors” above. Each nominee was appointed to our board prior to or in connection with our initial public offering. We have no reason to believe that any of the nominees will be unavailable or, if elected, will decline to serve. If any nominee becomes unable or unwilling to stand for election as a director, proxies will be voted for any substitute as designated by our board, or alternatively, our board may leave a vacancy on our board or reduce the size of our board.

Each director is elected by a plurality of the votes cast. “Plurality” means that the four nominees who receive the largest number of votes cast “For” such nominees are elected as directors. Stockholders may vote “For” any or all of the nominees or “Withhold” with respect any or all of the nominees named in this Proposal 1. Any shares voted “Withhold” and broker non-votes are not considered votes cast for the foregoing purpose and will have no effect on the outcome of the election.

EXECUTIVE OFFICERS

The following individuals constitute our executive officers:

Biographies of each of Messrs. Hart, Fernandez and McCabe appear above under “—Composition of our Board of Directors.” Biographies of the remaining executive officers appear below:

Jason P. Ment has served as the Company’s President and Co-Chief Operating Officer since November 2019. Mr. Ment joined the Partnership as Partner, General Counsel and Chief Compliance Officer in October 2010, assumed the additional role of Co-Chief Operating Officer in July 2018 and then became StepStone’s Partner, President and Co-Chief Operating Officer in May 2019. Prior to joining StepStone in October 2010, Mr. Ment was General Counsel of Citigroup Private Equity, a $10 billion equity co-investment, mezzanine, and fund of private equity funds business from 2007 to 2010. Also while at Citigroup, from 2009 to 2010, he was the General Counsel of Metalmark Capital, a middle-market private equity business, and from 2008 to 2010, he was General Counsel of Citi Sustainable Development Investments, a clean technology and renewable energy-focused venture investment business. Prior to joining Citigroup, Mr. Ment was an Associate in O’Melveny & Myers LLP’s Mergers & Acquisitions/Private Equity Group from 2005 to 2007 and an Associate in McDermott Will & Emery LLP’s Mergers & Acquisitions Group from 2002 to 2005. Mr. Ment received his BS from Cornell University and his JD from the New York University School of Law.

Johnny D. Randel has served as the Company’s Chief Financial Officer since November 2019 and has served as Chief Financial Officer of the Partnership since February 2010. He focuses on corporate finance and investment accounting, and is involved in various monitoring, management, and administrative activities. Prior to joining StepStone in 2010, Mr. Randel was Chief Financial Officer and Chief Operating Officer at Citigroup Private Equity beginning in 2006. From 2001 to 2006, Mr. Randel was Assistant Treasurer within Citigroup Inc.’s Treasury department where he managed rating agency relationships and fixed income client relations. From 1998 to 2000, Mr. Randel served as Vice President of Corporate Analysis at Associates First Capital, prior to its acquisition by Citigroup. He also served as a budget and forecast coordinator at Bank One from 1996 to 1998. Mr. Randel received his BGS from the University of Kansas and MBA from the University of Southern California.

COMPENSATION DISCUSSION AND ANALYSIS

This Compensation Discussion and Analysis provides an overview of our executive compensation philosophy and objectives and each element of compensation awarded to, earned by or paid to our named executive officers (our “Named Executive Officers” or “NEOs”) during fiscal 2022. For fiscal 2022, our Named Executive Officers were:

Compensation Philosophy and Determination Process

The foundation of our executive compensation is in our performance-based compensation culture, which extends far beyond our executive team. To ensure that all levels of our compensation program remain performance-based, we rely heavily on equity ownership and carried interest awards, creating direct links between the compensation realized by our NEOs and the interests of our shareholders and our clients.

In order to attract, retain, reward and motivate talented executives, our executive compensation program consists of the following components:

We believe these components of compensation result in an effective mix of fixed and variable compensation and balance short-term and long-term compensation considerations that are closely tied to the growth of StepStone and enhanced shareholder value.

The compensation of our NEOs is determined by our Compensation Committee, with the compensation for Messrs. Brem and Hart being subject to recommendation from the Compensation Committee for final determination by the board of directors. In making its determinations and recommendations for fiscal 2022, the Compensation Committee reviewed compensation-related information of our two closest public company peers—Hamilton Lane Incorporated and GCM Grosvenor Inc. (our “Peers”). The Compensation Committee utilized this Peer information to evaluate its pay mix and each component of our executive compensation program against the companies in our markets with which we compete most directly for talent. Neither management nor our Compensation Committee engaged a compensation consultant during fiscal 2022.

The Compensation Committee undertakes an annual review of the Company’s compensation policies and practices generally, financial incentive criteria, usage of equity for compensation, vesting and performance criteria and forfeiture and recoupment provisions. The Compensation Committee has determined that risks arising from the Company’s compensation policies and practices for all employees are not reasonably likely to have a material adverse effect on the Company.

Elements of Compensation

In order to attract, retain, motivate and reward our executives, we consider a total rewards approach to compensation, which consists of the components described below.

Base Salary

The base salary for each of the NEOs is determined by the Compensation Committee (or, for Messrs. Brem and Hart, by recommendation from the Compensation Committee to the board of directors for approval). In December 2021, following performance-related discussions for each NEO and consideration of information regarding base salaries of executives of our Peers, the base salaries for Messrs. Randel and Ment were increased from $250,000 to $300,000, effective January 1, 2022. No other changes were made to the base salaries of the NEOs during fiscal 2022.

Annual Incentive Compensation

Messrs. Brem and Hart were eligible to receive an annual bonus for calendar year 2021 based on the recommendation of the Compensation Committee and approval of the board of directors, and each other NEO was eligible to receive an annual bonus for calendar year 2021 based on the approval of the Compensation Committee. In December 2021, in consideration of each NEO’s performance and StepStone’s performance during calendar year 2021, the Compensation Committee approved (or, for Messrs. Brem and Hart, recommended to the board of directors, who subsequently approved), the following bonuses for the 2021 calendar year: $900,000 for each of Messrs. Brem, Hart, McCabe and Fernandez; $850,000 for Mr. Ment; and $750,000 for Mr. Randel.

Beginning in calendar year 2022, the Compensation Committee has recommended, and the board of directors has approved, a transition for Mr. Hart’s annual incentive compensation to be determined based on performance against corporate goals and objectives established at the beginning of calendar year 2022 relating to team and culture, including with a view to diversity, equity and inclusion and environmental, social and governance considerations, investment performance, client service and financial performance, as well as achievement against enumerated strategic priorities for 2022.

Long-Term Incentive Compensation

Restricted Stock Units. During fiscal 2022, we granted RSU awards under our 2020 Long-Term Incentive Plan (the “2020 LTIP”) to each of our NEOs, other than to Messrs. Brem and Fernandez. On February 14, 2022, Messrs. Hart and Ment each received 5,811 RSUs, and Messrs. Randel and McCabe each received 2,905 RSUs. All of the RSUs vest in equal annual installments over four years. The Compensation Committee and the board of directors believe that a four-year vesting period encourages our NEOs to take a longer-term view of our overall performance and stockholder value, while also providing a key retention incentive. During fiscal 2022, Messrs. Brem and Fernandez, as well as some other large equity owners, did not receive RSUs.

Carried Interest Compensation. We receive an allocation of performance-based fees, commonly referred to as “carried interest,” from limited partners in our investment funds and separately managed accounts for which we act as both investment adviser and general partner or managing member (the “StepStone Funds”) and we hold an equity interest. Approximately 50% of carried interest allocation revenue is awarded to certain employees, including our NEOs, as a form of long-term incentive compensation, fostering alignment of interest with our clients and investors, and retaining key investment professionals. Ownership of carried interest by our named executive officers may be subject to a range of vesting conditions, including continued employment and forfeiture upon occurrence of certain specified events post-termination, thus serving as an important employment retention mechanism. Carried interest awards to employees have historically vested over eight years; however, awards granted in April 2020 and thereafter vest over five years. Each carried interest award is subject to accelerated vesting in connection with certain qualifying terminations, as described under “Executive Compensation Tables—Potential Payments Upon Termination or Change in Control—Carried Interest” below.

Each of our NEOs received cash distributions attributable to carried interest awards in fiscal 2022 which are reflected in the “All Other Compensation” column of the Summary Compensation Table below.

Other Benefits and Perquisites

Retirement Benefits. We offer eligible employees, including our NEOs, the opportunity to participate in our tax-qualified 401(k) plan. Employees can contribute an amount that cannot exceed 100% of their eligible compensation up to the Internal Revenue Service’s annual limits on either a before-tax or after-tax basis into the 401(k) plan. We make a non-discretionary non-matching contribution to the plan on behalf of all eligible employees equal to 3% of their eligible pay. All company contributions are immediately 100% vested.

Health and Welfare Benefits. Our NEOs participate in the same health and welfare benefit programs offered to our broader employee populations. In addition, we provide our NEOs and other senior employees with enhanced life and disability insurance benefits for which the Company pays the premiums.

Termination Benefits. As described under “Executive Compensation Tables—Potential Payments Upon Termination or Change in Control” below, StepStone is not party to any employment, severance or change in control arrangements with our NEOs; however, the outstanding equity awards held by our NEOs and each NEO’s carried interest awards are eligible for accelerated vesting in connection with certain termination or change in control events. Historically, we have not viewed severance arrangements for executive officers as necessary due to existing carried interest and other long-term equity holdings amongst our executive officers.

Perquisites and Other Compensation. We believe that our executive compensation program provides appropriate compensatory levels without the need for excessive perquisites and benefits. As a result, none of our NEOs received any perquisites in excess of $10,000 during fiscal 2022. We do, however, provide certain limited tax reimbursements for unitholders of the Partnership who provide services to the Partnership, including our NEOs, who own less than one percent of the outstanding units of the Partnership. Such individuals are eligible to receive a self-employment tax make-whole payment in the amount of self-employment tax payable by the individual that would not have been payable by the individual if the individual had the status of an employee of the Partnership for tax purposes.

Other Compensation Matters

Tax and Accounting Implications of Executive Compensation Decisions

In making compensation decisions, the Compensation Committee and the board of directors consider the tax treatment and accounting implications; however, these are not the primary basis upon which our compensation decisions are made and are only secondary considerations to ensuring that our compensation decisions further our overall executive compensation philosophy. As a result, the compensation received by our NEOs may not be fully tax deductible or may have adverse accounting consequences.

Prohibition on Hedging and Pledging

As described under “Board of Directors and Corporate Governance—Prohibitions and Restrictions on Hedging and Pledging Transactions” above, our NEOs, members of their immediate families and households and their controlled entities are prohibited from engaging in transactions that hedge or offset, or are designed to hedge or offset, any decrease in the market value of StepStone securities and from pledging StepStone securities as collateral for a loan.

COMPENSATION COMMITTEE REPORT

The Compensation Committee has reviewed and discussed the Compensation Discussion and Analysis section of this proxy statement with management and, based on such review and discussions, the Compensation Committee recommended to our board of directors that the Compensation Discussion and Analysis be included in this proxy statement and incorporated by reference in our Annual Report on Form 10-K for the year ended March 31, 2022.

EXECUTIVE COMPENSATION TABLES

Summary Compensation Table

The following table sets forth the compensation earned by or granted to our Named Executive Officers during the fiscal years ended March 31, 2020, 2021 and 2022.

Grants of Plan-Based Awards Table

The following table includes information regarding RSUs granted to Named Executive Officers under the 2020 LTIP during fiscal 2022.

Outstanding Equity Awards as of March 31, 2022

In connection with the reorganization during our IPO, we reclassified the Partnership’s interests held by certain partners as Class B units and B2 units. Two of our NEOs, Messrs. Hart and Ment, hold unvested Class B2 units. The following table reflects information regarding outstanding unvested Class B2 units and RSUs held by our Named Executive Officers as of March 31, 2022.

Option Exercises and Stock Vested

The following table reflects Class B2 units and RSUs held by our Named Executive Officers which vested during fiscal 2022. None of our NEOs hold any outstanding stock option awards.

Pension Benefits

1

Carried Interest

Any carried interest awards made to our NEOs vest in full upon a termination due to death or permanent disability. In the event of a termination of employment due to Retirement, all carried interest awards will continue to vest as if the NEO continued to remain employed, subject to the NEO’s compliance with certain non-competition and non-solicitation conditions. In the event of an NEO’s termination for Cause, 50% of such NEO’s carried interest he or she would have retained upon their termination is deemed forfeited.

For purposes of the carried interest awards:

Restricted Stock Units

Pursuant to the terms of the award agreements for the RSUs granted to our NEOs, in the event of a termination of employment due to death or disability, all outstanding RSUs will vest in full. In the event of a termination of employment due to Retirement (as defined below), all outstanding RSUs will continue to vest as though the named executive officer had remained employed. In addition, in the event of termination of the NEO’s employment without Cause (as defined below) or a resignation for Good Reason (as defined below), in each case, upon or within the 13-month period following a Change in Control (as defined below), all unvested RSUs will vest in full.

For purposes of the RSU award agreements:

Quantification of Potential Payments

The table below sets forth the aggregate amounts that would have been payable to each Named Executive Officer with respect to the Class B2 units and RSUs, as described above, assuming the applicable termination event or change in control occurred on March 31, 2022. Carried interest is paid basednot on the price at whichproxy card, the StepStone Funds are ableproxies will vote your shares, under your proxy, according to sell or otherwise realize value from their investments; it is inherently uncertain and any yet unrealized carried interest amounts maybest judgment.

If you hold your shares directly in your own name, they will not be paid for several years after carried interest is fully vested,voted if at all. Because of this uncertainty weyou do not provide, or have not already provided, a calculation of carried interest payment amounts that wouldproxy.

Your shares may be payable following the NEO’s retirement, death or disability on March 31, 2022. As of March 31, 2022, only Messrs. Brem and Fernandez were retirement-eligible for purposes of the carried interest and outstanding RSUs, however neither Mr. Brem nor Mr. Fernandez has any outstanding RSUs, nor does either have any Class B2 units. As a result,voted under certain circumstances if they are not includedheld in the table below.

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Principal Accountant Feesname of a broker. Brokers generally have the authority, but are not required, to vote shares not voted by customers on certain “routine” matters, and Services

The followingare prohibited from exercising discretionary authority on non-routine matters. Whether a proposal is a summary of Ernst & Young LLP’s fees for professional services renderedconsidered routine or non-routine is subject to usstock exchange rules and final determination by the stock exchange. There are only “non-routine” matters on the agenda for the fiscal years ended March 31, 2022 and 2021.

Pre-Approval of Audit and Non-Audit Services Policy

The Audit Committee adopted a policy for pre-approving all audit and permitted non-audit services provided by Ernst & Young LLP. The Audit Committee annually pre-approves a list of specific services and categories of services, subject to a specified cost level. Part of this approval process includes making a determination as to whether permitted non-audit services are consistent with the SEC’s rules on auditor independence. The Audit Committee has delegated authority to the chair of the Audit Committee to pre-approve audit and non-audit services in amounts up to $500,000 (1) per engagement, (2) per additional category of services, or (3) to the extent otherwise required under the policy, for services exceeding the pre-approved budgeted fee levels for the specified service. All of the services and fees identified in the table above were approved in accordance with SEC and Public Company Accounting Oversight Board requirements and, following our initial public offering, pursuant to the pre-approval policy described in this paragraph.

AUDIT COMMITTEE REPORT

The Audit Committee has reviewed and discussed the Company’s audited financial statements with management and Ernst & Young LLP, and has discussed with Ernst & Young LLP the matters requiredproposal if you want your vote to be discussed by applicable requirements of the Public Company Accounting Oversight board (the “PCAOB”) and the Securities and Exchange Commission (“SEC”). Additionally, the Audit Committee has received the written disclosures and the letter from Ernst & Young LLP, as required by the applicable requirements of the PCAOB regarding Ernst & Young LLP’s communications with the Audit Committee concerning independence, and has discussed with Ernst & Young LLP its independence. Based upon such review and discussion, the Audit Committee recommended to the Board of Directors that the audited financial statements be included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2022 for filing with the SEC.

Audit Committee of the Board of Directors,

David F. Hoffmeister (Chair)

Valerie G. Brown

Anne L. Raymondcounted.

PROPOSAL 2—RATIFICATION OF APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC

ACCOUNTING FIRM

The Audit Committee is directly responsible for the appointment, compensation, retention and oversight of our independent registered public accounting firm. In accordance with its charter, the Audit Committee evaluates the independent registered public accounting firm’s qualifications, performance and independence at least annually.

Our Audit Committee has selected Ernst & Young LLP as the Company’s independent registered public accounting firm for the fiscal year ending March 31, 2023. Ernst & Young LLP has served as the Company’s independent registered public accounting firm since 2009. The membersApproval of the Audit Committee and our board of directors believe that the continued retention of Ernst & Young LLP as StepStone’s independent registered public accounting firm is in the best interests of StepStone and its stockholders. Our board of directors and Audit Committee value the opinions of our stockholders and consider the selection of such firm to be an important matter of stockholder concern. The selection of Ernst & Young LLP is accordingly being submitted for ratification of stockholders as a matter of good corporate practice. If the stockholders fail to ratify this selection, our board of directors and Audit Committee will consider the outcome of the vote in determining whether to retain this firm for the fiscal year ending March 31, 2023. Even if the selection is ratified, our Audit Committee in its discretion may direct the appointment of different independent auditors at any time during the year if it determines that such a change would be in the best interests of our Company and stockholders.

The ratification of the appointment of Ernst & Young LLP as our independent registered public accounting firm for our fiscal year ending March 31, 2023 Nasdaq Proposalrequires the affirmative vote of at least a majority of the voting power of the stock present in person or represented by proxy and entitled to vote on the subject matter. Stockholders may vote “For,” “Against,” or “Abstain” with respect to this Proposal 2. Abstentions will have the same effectmatter, voting as a vote “Against” on the outcome of Proposal 2. Because broker discretionary voting is permitted with respect to Proposal 2, we expect there will be no broker non-votes with respect to this Proposal.

One or more representatives of Ernst & Young LLP are expected to be present at the Annual Meeting online and will have an opportunity to make a statement if they wish and be available to respond to appropriate questions.single class.

PROPOSAL 3—NON-BINDING, ADVISORY VOTE ON THE FREQUENCY OF FUTURE NON-BINDING, ADVISORY VOTES TO APPROVE NAMED EXECUTIVE OFFICER COMPENSATION

In accordance withYou may revoke your proxy and change your vote at any time before the Dodd-Frank Actfinal vote at the Special Meeting. You may revoke your previously delivered proxy and Section 14A of the Exchange Act, we are asking our stockholders to vote onagain by signing and returning a non-binding and advisory basis, on the frequency of future non-binding, advisory votes to approve the compensation of our named executive officers (“Say-on-Pay”), as disclosed pursuant to the SEC’s compensation disclosure rules. This proposal is commonly referred to as a “Say-on-Frequency” vote.

By voting on this Proposal, stockholders may indicate, on a non-binding and advisory basis, whether the say-on-pay advisory vote should occur with a frequency of 1 year, 2 years or 3 years.

After careful consideration, our board of directors has determined that an annual Say-on-Pay vote is the most appropriate policy for the Company as it will allow our stockholders to provide timely, direct input on our executive compensation philosophy, policies and practices as disclosed in the proxy statement each year. Further, while our executive compensation program is designed to promote a long-term connection between pay and performance, our board of directors recognizes that executive compensation disclosures are made annually. Holding an annual advisory vote on executive compensation would provide the Company with more direct and immediate feedback on those compensation disclosures. Our board believes that an annual vote is therefore consistent with our efforts to engage in an ongoing dialogue with our stockholders on executive compensation matters. Although this vote is not binding on our company, our board of directors values the opinions that stockholders express in their votes.

Please mark on thenew proxy card or voting instruction form with a later date or by attending the Special Meeting online and voting. Your attendance at the Special Meeting online will not automatically revoke your preference asproxy unless you vote at the Special Meeting or specifically request that your prior proxy be revoked by delivering to the frequencyCompany’s Chief Legal Officer & Secretary at 277 Park Avenue, 45^th Floor, New York, New York 10172, a written notice of holdingrevocation prior to the Special Meeting.

Please note, however, that if your shares are held of record by a broker, you must instruct your broker, bank or other nominee that you wish to change your vote by following the procedures on the voting form provided to you by the broker, bank or other nominee.

If you sign your proxy card without providing further instructions, your shares will be voted “FOR” approval of the Nasdaq Proposal.

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CERTAIN RELATIONSHIPS AND RELATED PERSON TRANSACTIONS

Procedures for Review, Approval, and Ratification of Related Person Transactions

Our board of directors has adopted a written policy regarding the review, approval, ratification or disapproval by our Audit Committee of transactions between us or any of our subsidiaries and any related person (defined in the policy to include our executive officers, directors or director nominees, any stockholder beneficially owning in excess of 5% of our stock or securities exchangeable for our stock and any immediate family member of any of the foregoing persons) in which the amount involved since the beginning of our last completed fiscal year will or may be expected to exceed $120,000 and in which one or more of such related persons has a direct or indirect interest. In approving or disapproving any such transaction, our Audit Committee considers the relevant facts and circumstances available and deemed relevant to the Audit Committee. Any member of the Audit Committee who is a related person with respect to a transaction under review will not be permitted to participate in the deliberations or vote on approval, ratification or disapproval of the transaction.

Other than the transactions described below under the “Related Person Transactions,” there have been no other “related person transactions” that require disclosure under the SEC rules since the beginning of our last completed fiscal year.

Related Person Transactions

Transactions with Management, our Directors and Certain Beneficial Owners

One of our directors, Steven Mitchell, is a controlling stockholder and serves on the investment committee of Argonaut Private Capital, LP, which manages several private equity investment funds. In connection with the formation of one of these funds, an affiliate of ARG Private Equity, LLC (formerly Argonaut Private Equity, LLC), directly and indirectly, sold investments represented by capital commitments of $400 million in the aggregate. The purchasers included accounts managed or advised by the Partnership. Since April 1, 2021 (i.e., the beginning of the last completed fiscal year) no additional capital commitments have been made by accounts managed or advised by the Partnership (including related investments by the Partnership), in the funds managed by Argonaut Private Capital, LP. These accounts have paid management fees to Argonaut Private Capital, LP aggregating to $1.8 million since April 1, 2021. Mr. Mitchell benefitted from these payments in his capacity as controlling stockholder of Argonaut Private Capital, LP.

Additionally, each of the three non-executive officer members, who used to be members of our Class B Committee (defined below) until August 2021, namely, Thomas Bradley, David Jeffrey and Darren Friedman, are partners of the Partnership. Since April 1, 2021, each of Messrs. Bradley, Jeffrey and Friedman received compensation and partnership distributions from the Partnership in excess of $120,000. Mark Maruszewski is a partner of the Partnership and served as a member of the Class B Committee and as a director of the Company until September 2021. For additional information about Mr. Maruszewski’s compensation see the section titled “Fiscal 2022 Director Compensation.”

In addition, certain persons, including our employees and partners of the Partnership, and directors of the Company, have the opportunity to invest their personal capital in the StepStone Funds on the same terms and conditions as other unaffiliated clients and investors, except that these investments are generally not subject to management fees or carried interest. Investments by any such persons in Conversus StepStone Private Markets and Conversus StepStone Private Venture and Growth Fund, funds for which the Partnership acts as sub-adviser, are subject to management fees. Each of these investment opportunities are available to those persons whom we have determined to have a status, such as a “qualified purchaser” under the Investment Company Act of 1940, as amended, and/or an “accredited investor” under the Securities Act of 1933, as amended, that reasonably permits us to offer them these types of investments in compliance with applicable laws. We encourage these persons to invest in the StepStone Funds because we believe that such investing further aligns their interests with those of our fund investors and our firm. In the aggregate, the Company’s executive officers, employees who are stockholders beneficially owning in excess of 5% of a class our stock, and non-independent directors (and their

respective family members and investment vehicles) have made commitments to the StepStone Funds between April 1, 2021 and July 1, 2022 of approximately $48.8 million in the aggregate, and have received distributions from the StepStone Funds as a result of their invested capital during that period of approximately $26.2 million in the aggregate.

In November 2021, we conducted an underwritten secondary public offering of 4.5 million shares of our Class A common stock sold by selling stockholders, including certain of our executive officers, directors and persons deemed to be holders of 5% or more of our voting securities, which resulted in total aggregate gross proceeds of approximately $235.6 million to the selling stockholders (the “November Secondary Offering”). A corresponding number of shares of Class B common stock were automatically redeemed at par value and canceled in connection with such exchange. We did not offer any shares of our Class A common stock in the November Secondary Offering and did not receive any proceeds from the sale of the shares of our Class A common stock.

The following executive officers, directors and persons deemed to be holders of 5% or more of our voting securities participated in the November Secondary Offering and sold shares of our Class A common stock at the November Secondary Offering price (net of underwriting discounts) of $51.83 per share: an entity affiliated with Monte M. Brem sold 863,616 shares for net proceeds of approximately $44.8 million; Michael McCabe sold 665,168 shares (including shares held directly and through a trust) for net proceeds of approximately $34.5 million; Scott Hart sold 66,517 shares through a trust for net proceeds of approximately $3.4 million; ARGO Holdings, LLC (an entity affiliated with ARG Private Equity, LLC and one of our former directors, Robert A. Waldo) sold 1,330,336 shares for net proceeds of approximately $69.0 million; Thomas Alcott Bradley sold 232,809 shares for net proceeds of approximately $12.1 million; David Jeffrey sold 116,404 shares for net proceeds of approximately $6.0 million; Mark Maruszewski sold 193,001 shares for net proceeds of approximately $10.0 million; Johnny D. Randel sold 133,033 shares for net proceeds of approximately $6.9 million; and an entity affiliated with James Lim sold 399,101 shares for net proceeds of approximately $20.7 million.

Acquisition of Greenspring Associates

On September 20, 2021 (the “Closing Date”), the Company and the Partnership completed the previously announced acquisition of Greenspring Associates, Inc. and related entities (the “Greenspring Acquisition”). In connection with the closing of the Greenspring Acquisition, and as described more fully below, the Limited Partnership Agreement of the Partnership amended to provide for certain governance and other rights and restrictions for the sellers in the Greenspring Acquisition.

Each of C. Ashton Newhall and James Lim were sellers in the Greenspring Acquisition and, following the Greenspring Acquisition, became more than 5% beneficial owners of our Class A common stock and partners in the Partnership. C. Ashton Newhall’s brother, Adair Newhall, also was a seller in the Greenspring Acquisition and also became a partner in the Partnership. Each of C. Ashton Newhall, James Lim and Adair Newhall has received compensation and partnership distributions from the Partnership in excess of $120,000 since April 1, 2021. Pursuant to the Transaction Agreement, an entity affiliated with Mr. C. Ashton Newhall received total aggregate consideration of $386.2 million, consisting of cash and our Class A common stock, with the value of the equity portion based on the $44.03 closing price per share of Class A common stock on the Closing Date. In addition, an entity affiliated with Mr. Lim received total aggregate consideration of $351.2 million under the Transaction Agreement in the form of shares of our Class A common stock and Class C units of the Partnership that are exchangeable into shares of our Class A common stock. The value of the aggregate consideration is based on the closing price per share of Class A common stock on the Closing Date of $44.03. Mr. Adair Newhall also received aggregate consideration of $9.1 million under the Transaction Agreement in the form of Class C units of the Partnership that are exchangeable into shares of our Class A common stock. The consideration value is based on the closing price per share of Class A common stock on the Closing Date of $44.03.

Transactions in Connection with our Reorganization and Initial Public Offering

The Reorganization

In connection with the reorganization (i.e., the series of transactions immediately before the Company’s initial public offering, which was completed on September 18, 2020) and our initial public offering, we entered into the Tax Receivable Agreements, the StepStone Limited Partnership Agreement, the Exchange Agreement, the Stockholders Agreement and the Registration Rights Agreement. In addition, we acquired from existing limited partners of the Partnership certain partnership interests using a portion of the proceeds of our initial public offering, and in the case of certain pre-initial public offering institutional investors (the “Direct StepStone Stockholders”), in exchange for Class A common stock. We classified the Partnership’s interests acquired by the Company as Class A units and reclassified the Partnership’s interests held by certain partners as Class B units.

The following are summaries of certain provisions of our related party agreements, which are qualified in their entirety by reference to all of the provisions of such agreements. Because these descriptions are only summaries of the applicable agreements, they do not necessarily contain all of the information that you may find useful. We therefore encourage you to review the agreements in their entirety.

Tax Receivable Agreements

The Company used the net proceeds that it received from the initial public offering to purchase shares of Class A common stock from certain of the Partnership’s unitholders, including certain members of the Company’s senior management, at a per-share price equal to the per-share price paid by the underwriters for shares of the Company’s Class A common stock in the initial public offering. In connection with the closing of the Greenspring Acquisition (as described above), holders of Class C units to became parties to the Exchanges Tax Receivable Agreement via joinder.

The limited partners of the Partnership (not including the Company) may exchange their Class B or Class C units for shares of the Company’s Class A common stock on a one-for-one basis or, at the Company’s election, for cash. When a Class B unit is exchanged for a share of the Company’s Class A common stock or cash, a corresponding share of our Class B common stock will automatically be redeemed by us at par value and canceled. No shares of common stock are redeemed when a Class C unit is exchanged for a share of the Company’s Class A common stock or cash. Certain limited partners of the Partnership exchanged their Class B and Class C units for shares of the Company’s Class A common stock in connection with the November Secondary Offering described above. Additionally, certain limited partners of the Partnership exchanged their Class B units for shares of the Company’s Class A common stock in connection with other exchanges occurring September 30, 2021 and December 15, 2021 described below.

As a result of these purchases and any subsequent exchanges, we are entitled to a proportionate share of the existing tax basis of the assets of the Partnership. In addition, the Partnership and certain of its direct or indirect subsidiaries that are treated as partnerships for U.S. federal income tax purposes will have in effect an election under Section 754 of the Code for the taxable year of the initial public offering, any secondary offerings and any exchange, which is expected to result in increases to the tax basis of the tangible and intangible assets of the Partnership which will be allocated to the Company. These increases in tax basis are expected to increase the Company’s depreciation and amortization deductions for tax purposes and create other tax benefits and may also decrease gains (or increase losses) on future dispositions of certain assets and therefore may reduce the amount of tax that the Company would otherwise be required to pay.

The Direct StepStone Stockholders, which were pre-initial public offering institutional investors in the Partnership, held their interests in the Partnership through “blocker companies.” Pursuant to the blocker mergers that occurred as part of the reorganization, the Company inherited the unamortized portion of the increase in tax basis in the tangible and intangible assets of the Partnership resulting from the prior acquisitions of interests in the Partnership by the blocker companies as well as the net operating losses, capital losses or other loss

carrybacks and carryforwards of the blocker companies generated before the blocker mergers, which may be utilized by the Company, subject to certain limitations imposed under applicable law, to reduce the amount of tax that the Company would otherwise be required to pay.

The Company has entered into an Exchanges Tax Receivable Agreement with certain partners of the Partnership and a Reorganization Tax Receivable Agreement with the Direct StepStone Stockholders. The Exchanges Tax Receivable Agreement provides for payment by the Company to certain partners of the Partnership (not including the Company) of 85% of the amount of the net cash tax savings, if any, that the Company realizes (or, under certain circumstances, is deemed to realize) as a result of increases in tax basis (and utilization of certain other tax benefits) resulting from (i) the Company’s acquisition of such partner’s Partnership units in connection with the initial public offering, any secondary offerings and any exchanges and (ii) any payments the Company makes under the Exchanges Tax Receivable Agreement (including tax benefits related to imputed interest). The Reorganization Tax Receivable Agreement provides for payment by the Company to the Direct StepStone Stockholders of 85% of the amount of the net cash tax savings, if any, that the Company realizes (or, under certain circumstances, is deemed to realize) as a result of (i) the unamortized portion of the increase in tax basis in the tangible and intangible assets of the Partnership resulting from the prior acquisitions of interests in the Partnership by the blocker companies as well as the net operating losses, capital losses or other loss carrybacks and carryforwards of the blocker companies generated before the Blocker Mergers and (ii) tax benefits related to imputed interest.

The Company will retain the benefit of the remaining 15% of these net cash tax savings. The obligations under the Tax Receivable Agreements are the Company’s obligations and not obligations of the Partnership. For purposes of each Tax Receivable Agreement, the benefit deemed realized by the Company will be computed by comparing the Company’s U.S. federal, state and local income tax liability to the amount of such U.S. federal, state and local taxes that the Company would have been required to pay had it not been able to utilize any of the benefits subject to such Tax Receivable Agreement. The actual tax benefits realized by the Company may differ from tax benefits calculated under the Tax Receivable Agreements as a result of the use of certain assumptions in the Tax Receivable Agreements, including the use of an assumed weighted-average state and local income tax rate to calculate tax benefits. In addition, the StepStone Limited Partnership Agreement provides that the Partnership may elect to apply an allocation method with respect to certain of the Partnership investment assets that were held at the time of the closing of our initial public offering that is expected to result in the future, solely for tax purposes, in certain items of loss being specially allocated to StepStone and corresponding items of gain being specially allocated to the other partners of the Partnership.

The term of each Tax Receivable Agreement commenced upon the completion of our initial public offering and will continue until all tax benefits that are subject to such Tax Receivable Agreement have been utilized or have expired, unless the Company exercises its right to terminate such Tax Receivable Agreement (or such Tax Receivable Agreement is terminated due to a change in control or our breach of a material obligation thereunder), in which case, the Company will be required to make the termination payment specified in such Tax Receivable Agreement, as specified below. We expect that all of the intangible assets, including goodwill, of the Partnership allocable to the Partnership units acquired or deemed acquired by the Company from existing partners of the Partnership at the time of our initial public offering, any secondary offerings and any exchanges will be amortizable for tax purposes.

Estimating the amount and timing of payments that may be made under a Tax Receivable Agreement is by its nature imprecise, insofar as the calculation of amounts payable depends on a variety of factors and future events. The actual increase in tax basis and utilization of tax attributes, as well as the amount and timing of any payments under the agreement, will vary depending upon a number of factors, some of which may only be applicable to the Exchanges Tax Receivable Agreement or the Reorganization Tax Receivable Agreement, and some of which are applicable to both Tax Receivable Agreements, including:

In addition, the depreciation and amortization periods that apply to the increases in tax basis, the timing and amount of any earlier payments that the Company may have made under a Tax Receivable Agreement and the portion of the Company’s payments under such Tax Receivable Agreement that constitute imputed interest or give rise to depreciable or amortizable tax basis are also relevant factors.

The Company has the right to terminate each Tax Receivable Agreement, in whole or in part, at any time. Each Tax Receivable Agreement provides that if (i) the Company exercises its right to early termination of the Tax Receivable Agreement in whole (that is, with respect to all benefits due to all beneficiaries under the Tax Receivable Agreement) or in part (that is, with respect to some benefits due to all beneficiaries under the Tax Receivable Agreement), (ii) the Company experiences certain changes in control, (iii) the Tax Receivable Agreement is rejected in certain bankruptcy proceedings, (iv) the Company fails (subject to certain exceptions) to make a payment under the Tax Receivable Agreement within 180 days after the due date or (v) the Company materially breaches its obligations under the Tax Receivable Agreement, the Company will be obligated to make an early termination payment to the beneficiaries under the Tax Receivable Agreement equal to the present value of all payments that would be required to be paid by the Company under the Tax Receivable Agreement. The amount of such payments will be determined on the basis of certain assumptions in each Tax Receivable Agreement, including (i) the assumption that the Company would have enough taxable income to fully utilize the tax benefit resulting from the tax assets which are the subject of such Tax Receivable Agreement; (ii) the assumption that any item of loss deduction or credit generated by a basis adjustment or imputed interest arising in a taxable year preceding the taxable year that includes an early termination will be used by the Company ratably from such taxable year through the earlier of (x) the scheduled expiration of such tax item or (y) 15 years; (iii) in the case of the Reorganization Tax Receivable Agreement, the assumption that any net operating loss (and similar items) inherited from the blocker companies will be used by the Company ratably from the taxable year that includes an early termination through the earlier of (x) the scheduled expiration of such net operating loss (or similar item) or (y) 15 years (or longer, to the extent that the Company is prevented from fully utilizing such net8

operating loss (or similar item) under certain U.S. federal income tax rules); (iv) the assumption that any non-amortizable assets are deemed to be disposed of in a fully taxable transaction on the fifteenth anniversary of the earlier of the basis adjustment and the early termination date; (v) the assumption that U.S. federal, state and local tax rates will be the same as in effect on the early termination date, unless scheduled to change and, solely with respect to the Exchanges Tax Receivable Agreement; and (vi) the assumption that any units (other than those held by the Company) outstanding on the termination date are deemed to be exchanged for an amount equal to the market value of the corresponding number of shares of Class A common stock on the termination date. The amount of the early termination payment is determined by discounting the present value of all payments that would be required to be paid by the Company under the Tax Receivable Agreement at a rate equal to the lesser of (a) 6.5% and (b) the Secured Overnight Financing Rate (“SOFR”) plus 400 basis points.

The payments that we are required to make under the Tax Receivable Agreements are expected to be substantial. Based on certain assumptions, including no material changes in the relevant tax law and that the Company earns sufficient taxable income to realize the full tax benefits that are the subject of the Tax Receivable Agreements, as of March 31, 2022, we expect that future payments to the Direct StepStone Stockholders and partners of the Partnership (not including the Company) in respect of the reorganization, the initial public offering and any secondary offerings will equal $197.2 million in the aggregate, although the actual future payments to the Direct StepStone Stockholders and continuing limited partners of the Partnership will vary based on the factors discussed above, and estimating the amount of payments that may be made under the Tax Receivable Agreements is by its nature imprecise, insofar as the calculation of amounts payable depends on a variety of factors and future events.

Decisions made in the course of running our business, such as with respect to mergers and other forms of business combinations that constitute changes in control, may influence the timing and amount of payments we make under the Tax Receivable Agreements in a manner that does not correspond to our use of the corresponding tax benefits. In these situations, our obligations under the Tax Receivable Agreements could have a substantial negative effect on our liquidity and could have the effect of delaying, deferring or preventing certain mergers, asset sales, other forms of business combinations or other changes of control.

Payments are generally due under the Tax Receivable Agreements within a specified period of time following the filing of the Company’s tax return for the taxable year with respect to which the payment obligation arises, although interest on such payments will begin to accrue at a rate of SOFR plus 400 basis points from the due date (without extensions) of such tax return. Late payments generally accrue interest at a rate of SOFR plus 500 basis points. Because of our structure, our ability to make payments under the Tax Receivable Agreements is dependent on the ability of the Partnership to make distributions to us. The ability of the Partnership to make such distributions will be subject to, among other things, restrictions in the agreements governing our debt. If we are unable to make payments under the Tax Receivable Agreements for any reason, such payments will be deferred and will accrue interest until paid.

Payments under the Tax Receivable Agreements will be based on the tax reporting positions that we determine. Although we are not aware of any material issue that would cause the Internal Revenue Service (“IRS”) to challenge a tax basis increase or the inheritance of tax attributes from the blocker companies, the Company will not, in the event of a successful challenge, be reimbursed for any payments previously made under a Tax Receivable Agreement (although the Company would reduce future amounts otherwise payable to a holder of rights under such Tax Receivable Agreement to the extent such holder has received excess payments). No assurance can be given that the IRS will agree with our tax reporting positions, including the allocation of value among our assets. In addition, the required final and binding determination that a holder of rights under a Tax Receivable Agreement has received excess payments may not be made for a number of years following commencement of any challenge, and the Company will not be permitted to reduce its payments under a Tax Receivable Agreement until there has been a final and binding determination, by which time sufficient subsequent payments under the Tax Receivable Agreement may not be available to offset prior payments for disallowed benefits. As a result, in certain circumstances, payments could be made under a Tax Receivable

Agreement significantly in excess of the benefit that the Company actually realizes in respect of the increases in tax basis (and utilization of certain other tax benefits) resulting from (i) (x) the Company’s acquisition of Partnership units and inheritance of tax attributes from the blocker companies from Direct StepStone Stockholders and (y) the Company’s acquisition of Partnership units from continuing limited partners of the Partnership and future exchanges and (ii) any payments the Company makes under the Tax Receivable Agreement. The Company may not be able to recoup those payments, which could adversely affect the Company’s financial condition and liquidity.

No holder of rights under the Exchanges Tax Receivable Agreement or Reorganization Tax Receivable Agreement (including the right to receive payments under the respective Tax Receivable Agreement) may transfer its rights to another person without the written consent of the Company, except that all such rights under the Exchanges Tax Receivable Agreement may be transferred to another person to the extent that the corresponding Partnership units are transferred in accordance with the StepStone Limited Partnership Agreement.

Certain of our directors, executive officers and beneficial owners of more than 5% of our Class A common stock or Class B common stock received payments pursuant to the Tax Receivable Agreement since the beginning of the last completed fiscal year. Payments that require disclosure under Item 404 of Regulation S-K were as follows: (i) in fiscal 2022, Mr. Brem received $212,672; ARGO Holdings, LLC (an entity affiliated with ARG Private Equity, LLC and one of our former directors, Robert A. Waldo) received $227,610; and entities affiliated with FMR LLC received $215,574; and (ii) in fiscal 2023, Mr. Brem, directly and through MMAR HNL, LLC, has received $1,406,967; ARGO Holdings, LLC has received $1,015,744; Mr. Fernandez, through a family trust, has received $376,661; David Jeffrey has received $155,100; entities affiliated with T. Rowe Price Associates, Inc. has received $202,699; and entities affiliated with FMR LLC has received $527,021.

StepStone Limited Partnership Agreement

In connection with the reorganization, the partners of the Partnership amended and restated the partnership agreement of the Partnership (as amended and restated, the “StepStone Limited Partnership Agreement”). StepStone Group Holdings LLC, a Delaware limited liability company (the “General Partner”) became the sole general partner of the Partnership, and the Company owns a 100% membership interest in the General Partner and is its sole managing member. In connection with closing of the Greenspring Acquisition, the Company and the Partnership entered into an amended and restated StepStone Limited Partnership Agreement to create Class C units, which were issued to certain sellers in the Greenspring Acquisition, and to provide for certain governance and other rights and restrictions for the sellers of the Greenspring Acquisition.

In its capacity as the sole managing member of the General Partner, the Company controls all of the Partnership’s business and affairs. The Company holds all of the Class A units of the Partnership. Holders of Class A units, Class B units and Class C units are generally entitled to one vote per unit with respect to all matters as to which partners are entitled to vote under the StepStone Limited Partnership Agreement. Class A units, Class B units and Class C units have the same economic rights per unit.

At any time the Company issues a share of Class A common stock for cash, the net proceeds received by the Company will be promptly used to acquire a Class A unit unless used to settle an exchange of a Class B unit for cash. Any time the Company issues a share of Class A common stock upon an exchange of a Class B unit or settles such an exchange for cash, as described below under “—Exchange Agreement,” the Company will contribute the exchanged unit to the Partnership and the Partnership will issue to the Company a Class A unit. If the Company issues other classes or series of equity securities, the Partnership will issue to the Company an equal amount of equity securities of the Partnership with designations, preferences and other rights and terms that are substantially the same as the Company’s newly issued equity securities. Conversely, if the Company retires any shares of Class A common stock (or equity securities of other classes or series) for cash, the Partnership will, immediately prior to such retirement, redeem an equal number of Class A units (or its equity securities of the

corresponding classes or series) held by the Company, upon the same terms and for the same price, as the shares of the Company’s Class A common stock (or equity securities of such other classes or series) are retired. In addition, membership units of the Partnership, as well as our common stock, will be subject to equivalent stock splits, dividends, reclassifications and other subdivisions.

The Company will have the right to determine when distributions will be made to holders of units and the amount of any such distributions, other than with respect to tax distributions as described below. If a distribution is authorized, except as described below, such distribution will be made to the holders of Class A units, Class B units and Class C units on a pro rata basis in accordance with the number of units held by such holder.

The holders of units, including the Company, will incur U.S. federal, state and local income taxes on their proportionate share of any taxable income of the Partnership. Net profits and net losses of the Partnership will generally be allocated to holders of units (including the Company) on a pro rata basis in accordance with the number of units held by such holder; however, under applicable tax rules, the Partnership will be required to allocate net taxable income disproportionately to its partners in certain circumstances. The StepStone Limited Partnership Agreement provides for quarterly cash distributions, which we refer to as “tax distributions,” to the holders of the units generally equal to the taxable income allocated to each holder of units (with certain adjustments) multiplied by an assumed tax rate. Generally, these tax distributions will be computed based on our estimate of the net taxable income of the Partnership allocable per unit (based on the partner which is allocated the largest amount of taxable income on a per unit basis) multiplied by an assumed tax rate equal to the highest combined U.S. federal and applicable state and local tax rate applicable to any natural person residing in, or corporation doing business in, New York City or San Francisco, California that is taxable on that income (taking into account the deductibility of state and local taxes for U.S. federal income tax purposes and certain other assumptions). The StepStone Limited Partnership Agreement generally requires tax distributions to be pro rata based on the ownership of Partnership units, however, if the amount of tax distributions to be made exceeds the amount of funds available for distribution, the Company shall receive a tax distribution calculated using the corporate tax rate, before the other partners receive any distribution and the balance, if any, of funds available for distribution shall be distributed first to the other partners pro rata in accordance with their assumed tax liabilities (also using the corporate tax rate), and then to all partners (including the Company) pro rata until each partner receives the full amount of its tax distribution using the individual tax rate. The Partnership will also make non-pro rata payments to the Company to reimburse it for corporate and other overhead expenses (which payments from the Partnership will not be treated as distributions under the StepStone Limited Partnership Agreement). Notwithstanding the foregoing, no distribution will be made pursuant to the StepStone Limited Partnership Agreement to any unit holder if such distribution would violate applicable law or result in the Partnership or any of its subsidiaries being in default under any material agreement governing indebtedness.

The StepStone Limited Partnership Agreement provides that the Partnership may elect to apply an allocation method with respect to certain Partnership investment assets that were held at the time of the closing of the secondary offerings that is expected to result in the future, solely for tax purposes, in certain items of loss being specially allocated to us and corresponding items of gain being specially allocated to the other partners of the Partnership. In conjunction herewith, the Tax Receivable Agreements provide that the Company will pay over to the certain other partners of the Partnership 85% of the net tax savings to the Company attributable to those tax losses.

The StepStone Limited Partnership Agreement provides that it may generally be amended, supplemented, waived or modified by the Company in its sole discretion without the approval of any other holder of units, except that no amendment can adversely affect the rights of a holder of any class of units without the consent of holders of a majority of the units of such class.

Stockholders Agreement

Certain of the Class B stockholders entered into a Stockholders Agreement with respect to all shares of voting stock held by them. Pursuant to the Stockholders Agreement, these Class B stockholders agreed to vote all

their shares of voting stock, including Class A common stock and Class B common stock, together and in accordance with the instructions of the Class B Committee (as described below) on any matter submitted to our common stockholders for a vote.

The Stockholders Agreement provides for a “Class B Committee” selected from time to time by the parties to that agreement. As of the date of this proxy statement, the members of the Class B Committee currently are Monte Brem, Scott Hart, Jason Ment, Jose Fernandez, Johnny Randel, Michael McCabe and Thomas Keck.

Under the Stockholders Agreement, the Class B Committee is entitled to designate director nominees for election at our annual meetings of stockholders. The Company and the Class B stockholders who are parties to the Stockholders Agreement shall take all necessary action to cause the persons so designated by the Class B Committee to be the full slate of nominees recommended by our board of directors (or any committee or subcommittee thereof) for election as directors at each annual or special meeting of stockholders at which directors are to be elected. The parties to the Stockholders Agreement have agreed to vote their voting stock, including their Class A common stock and Class B common stock, as directed by the Class B Committee. As a result of these arrangements, the Class B Committee will control the outcome of any such matters that are submitted to our stockholders for up to five years from the initial public offering.

In connection with the closing of the Greenspring Acquisition, the Company and the Partnership amended and restated the Stockholders Agreement to provide for certain governance and other rights and restrictions to the sellers in the Greenspring Acquisition that were issued Class A common stock or Class C units of the Partnership. After this amendment, the Class B Committee continues to control the outcome of stockholder votes.

Exchange Agreement

We have entered into an Exchange Agreement with the direct partners of the Partnership that entitles those partners (and certain permitted transferees thereof) to exchange their Class B units together with an equal number of shares of Class B common stock, for shares of Class A common stock on a one-for-one basis or, at our election, for cash.

The Exchange Agreement permits the Class B stockholders to exercise their exchange rights subject to certain timing and other conditions. In particular, exchanges by our senior management, certain other senior employees and certain other of the Partnership’s unitholders will be subject to timing and volume limitations as follows: no exchanges were permitted until after September 18, 2021, and then exchanges may not exceed one-third of their original holdings prior to September 18, 2022 and two-thirds of their original holdings prior to September 18, 2023. Under the Exchange Agreement, our board of directors may waive these limitations in its discretion. After September 18, 2023, these limitations expire. These limitations do not apply to exchanges by our other employees who own Class B units or holders who may sell freely under Rule 144, subject to compliance with any lock-up agreements entered into in connection with our offerings and blackout periods imposed by us.

In addition, the Exchange Agreement provides that an owner does not have the right to exchange Class B units if we determine that such exchange would be prohibited by law or regulation or would violate other agreements with the Company, the Partnership or any of their subsidiaries to which the Partnership unitholder is subject. We may impose additional restrictions on exchanges that we determine to be necessary or advisable so that the Partnership is not treated as a “publicly traded partnership” for U.S. federal income tax purposes.

The Exchange Agreement also provides for mandatory exchanges under certain circumstances set forth in the StepStone Limited Partnership Agreement, including upon any transfer of partnership units to a person other than in a qualified transfer (as defined therein) and upon failure to comply with or material breach of the Stockholders Agreement.

Any beneficial holder exchanging Class B units must ensure that the applicable corresponding number of shares of Class B common stock are delivered to us for redemption at par value and cancellation as a condition of exercising its right to exchange Class B units for shares of our Class A common stock. When a Class B unit is surrendered for exchange, it will not be available for reissuance.

On September 30, 2021, pursuant to the Exchange Agreement, Johnny Randel exchanged 75,000 Class B units, Mike McCabe exchanged 100,000 Class B units held directly and 100,000 Class B units held by a family trust, Thomas Keck exchanged 400,000 Class B units held by a family trust, David Jeffrey exchanged 400,000 Class B units and Mark Maruszewski exchanged 200,000 Class B units and each received an equivalent number of shares of Class A common stock. In each case, a corresponding number of shares of Class B common stock were redeemed and cancelled. Based on the closing price per share of Class A common stock on the date of the exchange of $42.64, the Class A common stock each person received was valued as follows: Mr. Randel $3.2 million; Mr. McCabe $8.5 million (split equally between shares held directly and shares held by a family trust); Mr. Keck $ 17.1 million; Mr. Jeffrey $17.1 million; and Mr. Maruszewski $8.5 million.

On December 15, 2021, pursuant to the Exchange Agreement, Thomas Keck exchanged 450,000 Class B Units held by a family trust and received an equivalent number of shares of Class A common stock. A corresponding number of shares of Class B common stock were redeemed and cancelled. Based on the closing price per share of Class A common stock on the date of the exchange of $42.49, the Class A common stock Mr. Keck received was valued at $19.1 million.

In connection with the closing of the Greenspring Acquisition, the Company and the Partnership entered into a Class C Exchange Agreement with the holders of the newly issued Class C units that provides such unitholders (and certain permitted transferees thereof) to exchange their Class C units for shares of Class A common stock on a one-for-one basis, or, at our election, for cash. In addition, the Class C Exchange Agreement restricts the transfer of the Class C Units of the Partnership, which restriction shall apply for a maximum of three years, subject to certain exceptions.

Registration Rights Agreement

We have entered into a Registration Rights Agreement with certain Class B stockholders. This agreement provides these holders with certain registration rights, whereby they have the right to require us to register under the Securities Act the shares of Class A common stock issuable upon exchange of Class B units. The Registration Rights Agreement also provides for piggyback registration rights for the holders party thereto, subject to certain conditions and exceptions.

In connection with the closing of the Greenspring Acquisition, the Company entered into an amended and restated Registration Rights Agreement to include holders of the Class C units in order to provide them with certain registration rights, whereby they have the right to require us to register under the Securities Act the shares of Class A common stock issuable upon exchange of Class C units.

Indemnification Agreements

Our amended and restated bylaws provide that we will indemnify our directors and officers to the fullest extent permitted by the Delaware General Corporation Law (“DGCL”), subject to certain exceptions contained in our amended and restated bylaws. In addition, our amended and restated certificate of incorporation provides that our directors will not be liable for monetary damages for breach of fiduciary duty.

We have entered into indemnification agreements with each of our executive officers and directors. The indemnification agreements provide the executive officers and directors with contractual rights to indemnification, and expense advancement and reimbursement, to the fullest extent permitted under the DGCL, subject to certain exceptions contained in those agreements.

There is no pending litigation or proceeding naming any of our directors or officers to which indemnification is being sought, and we are not aware of any pending litigation that may result in claims for indemnification by any director or officer.

The number of shares of Class A common stock and Class B common stock outstanding and percentage of beneficial ownership before this offering set forth below is computed on the basis of 61,399,08264,221,399 shares of our Class A common stock and 46,891,89746,314,543 shares of our Class B common stock issued and outstanding as of July 19, 2022. The number of shares of Class A common stock outstanding does not include 2,928,824 shares of Class A common stock issuable upon exchange of an equal number of Class C units because such Class C units are not exchangeable as of September 17, 2022.February 29, 2024.

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QUESTIONS & ANSWERS ABOUT THE ANNUAL MEETING

This proxy statement is being provided to you in connection with the solicitation of proxies by our board of directors of the Company for use at the Annual Meeting to be held on Wednesday, September 14, 2022 at 1:00 p.m. Eastern Time, or at any adjournments or postponements thereof.

Our board of directors has determined that the Annual Meeting should be held online via live audio webcast at www.proxydocs.com/STEP in order to permit stockholders from any location with access to the Internet to participate.

Stockholders will be asked to consider the following proposals at the Annual Meeting:

Additionally, stockholders are entitled to vote on such other business as may properly be presented at the Annual Meeting or any adjournment or postponement thereof. We are not aware of any matters to be voted on by stockholders at the Annual Meeting other than those included in these proxy materials. If any matter is properly presented at the Annual Meeting, your executed proxy gives your proxy holder discretionary authority to vote your shares in accordance with their best judgment with respect to the matter.

Stockholders of record as of the close of business on July 19, 2022, the record date, are entitled to participate in and vote at the Annual Meeting. Pursuant to our amended and restated certificate of incorporation (the “certificate of incorporation”), holders of our (i) Class A common stock are entitled to one vote per share on all matters submitted to a vote of stockholders; and (ii) Class B common stock are entitled to five votes per share on all matters submitted to a vote of stockholders. Holders of our Class A common stock and Class B common stock will vote as a single class on all matters described in this proxy statement. Under certain circumstances in the future, the voting rights of the Class B common stock may change to one vote per share. Those circumstances, which are set out as a “Sunset” in our certificate of incorporation and summarized above under “—Status as a Controlled Company,” have not occurred.

As of the record date, there were 61,399,082 shares of our Class A common stock and 46,891,897 shares of our Class B common stock issued and outstanding. Pursuant to our certificate of incorporation, holders of Class A and Class B common stock are not entitled to cumulative voting.

Stockholders of record and beneficial owners of shares of our common stock as of the record date may attend and participate in the Annual Meeting, including voting and asking questions during the virtual Annual Meeting, by registering in advance of the Annual Meeting at www.proxydocs.com/STEP.

The Annual Meeting will begin at 1:00 p.m. Eastern Time on Wednesday, September 14, 2022. Access will begin at approximately 12:45 p.m. Eastern Time, and we encourage you to provide sufficient time before the Annual Meeting begins to check in. As mentioned above, in order to attend the Annual Meeting, you must register in advance of the meeting at www.proxydocs.com/STEP. Upon completing your registration, you will receive further instructions via email, including a unique link that will allow you access to the Annual Meeting and to vote and submit questions during the Annual Meeting. As part of the registration process, you must enter the control number located on your proxy card, voting instruction form, or Notice. If you are a beneficial owner of shares registered in the name of a broker, bank or other nominee, you will also need to enter your uniquely assigned control number at www.proxydocs.com/STEP as part of the registration process.

If you were a stockholder as of the close of business on July 19, 2022, the record date, you may vote shares held in your name as the stockholder of record or shares for which you are the beneficial owner but not the stockholder of record electronically during the Annual Meeting through the online virtual annual meeting platform by following the instructions provided when you log onto the online virtual Annual Meeting platform. Before the Annual Meeting, you may vote:

Stockholders may submit questions during the Annual Meeting at the meeting website. More information regarding the question and answer process, including the number and types of questions permitted, and how questions will be recognized and answered, will be available in the meeting rules of conduct, which will be posted on the Annual Meeting platform. Technicians will be ready to assist you with any technical difficulties you may have accessing the Annual Meeting. If you encounter any difficulties accessing the virtual-only Annual Meeting platform, including any difficulties voting or submitting questions, you may call the technical support number that will be posted in your instruction email that you will receive upon registration for the Annual Meeting.

Whether or not you plan to attend the Annual Meeting online, we encourage you to fill out and return the proxy card or vote by proxy over the telephone or on the Internet as instructed below to ensure your vote is counted.

Our board of directors unanimously recommends that stockholders vote “FOR” each nominee for director named in Proposal 1; “FOR” the ratification of the selection of Ernst & Young LLP as our independent11

registered public accounting firm for the fiscal year ending March 31, 2023 in Proposal 2; and for a frequency of “1 YEAR” on a non-binding and advisory basis, with respect to future votes to approve on a non-binding, advisory basis, the compensation of our named executive officers in Proposal 3.

In order for us to conduct the Annual Meeting, a quorum, consisting of a majority of the voting power of the stock outstanding and entitled to vote at the Annual Meeting, must be present or represented by proxy. Abstentions and withhold votes are counted as “shares present” at the Annual Meeting for purposes of determining whether a quorum exists. Proxies submitted by brokers or other holders of record holding shares for you as a beneficial owner that do not indicate a vote for some or all of the proposals because that holder does not have voting authority and has not received voting instructions from you (so-called “broker non-votes”) are also considered “shares present” for purposes of determining whether a quorum exists. If you are a beneficial owner, these holders are permitted to vote your shares on the ratification of the appointment of our independent registered public accounting firm, even if they do not receive voting instructions from you.

The proxy card enables you to appoint Jason Ment, Jose Fernandez and Jennifer Ishiguro as your representatives at the Annual Meeting. By completing and returning the proxy card, you are authorizing such persons to vote your shares at the Annual Meeting in accordance with your instructions on the proxy card. This way, your shares will be voted whether or not you attend the Annual Meeting. Even if you plan to attend the Annual Meeting, it is strongly recommended that you complete and return your proxy card before the date of the Annual Meeting in case your plans change. If a proposal comes up for vote at the Annual Meeting that is not on the proxy card, the proxies will vote your shares, under your proxy, according to their best judgment.

If you hold your shares directly in your own name, they will not be voted if you do not provide a proxy.

Your shares may be voted under certain circumstances if they are held in the name of a broker. Brokers generally have the authority, but are not required, to vote shares not voted by customers on certain “routine” matters. Because the ratification of an independent registered public accounting firm (Proposal 2) is the only matter that we expect to be considered to be “routine” at the Annual Meeting, your shares may only be voted by your broker for the ratification of our independent registered public accounting firm. Whether a proposal is considered routine or non-routine is subject to stock exchange rules and final determination by the stock exchange. Even with respect to routine matters, some brokers are choosing not to exercise discretionary voting authority. We expect that there will be no broker non-votes (as described below) with respect to Proposal 2.

Brokers are prohibited from exercising discretionary authority on non-routine matters. The election of directors (Proposal 1) and Say-on-Frequency (Proposal 3) are considered non-routine matters, and, therefore, brokers cannot exercise discretionary authority regarding these proposals for beneficial owners who have not returned proxies to the brokers (so-called “broker non-votes”). We expect that there will be no broker non-votes with respect to Proposal 2, although, as mentioned above, brokers may still choose not to exercise their discretionary voting authority in respect of Proposal 2 that we expect to be considered “routine.” As mentioned above, in the case of broker non-votes, and in cases where you or the broker(s) abstain from voting on a matter when present at the Annual Meeting and entitled to vote, those shares will still be counted for purposes of determining if a quorum is present but will have no effect on the outcome of the vote on Proposals 1 and 3.

Directors are elected by a plurality of the votes cast at the Annual Meeting. As a result, the four nominees who receive the highest number of shares voted “For” his or her election will be elected.

“Withhold” votes against a director and broker non-votes will have no direct effect on his or her election. However, our board has adopted a director resignation policy, under which any director who receives a greater number of votes “withheld” for his or her election than “for” such election must promptly tender his or her resignation offer to the Nominating and Corporate Governance Committee. The Nominating and Corporate Governance Committee will recommend to our board whether to accept or reject the resignation offer, or whether other action should be taken. In determining whether to recommend that our board accept any resignation offer, the Nominating and Corporate Governance Committee may consider all factors that the Committee’s members believe are relevant. Our board will act on the Nominating and Corporate Governance Committee’s recommendation within 90 days following certification of the election results. Any director who tenders his or her resignation offer will not participate in the proceedings of either the Nominating and Corporate Governance Committee or our board with respect to his or her own resignation offer.

Approval of Proposal 2 requires the affirmative vote of at least a majority of the voting power of the stock present or represented by proxy and entitled to vote on the subject matter, voting as a single class.

Abstentions will have the same effect as a vote “Against” on the outcome of Proposal 2. Because broker discretionary voting is permitted with respect to Proposal 2, we expect there will be no broker non-votes with respect to Proposal 2.

Approval of Proposal 3 requires the affirmative vote of at least a majority of the voting power of the stock present or represented by proxy and entitled to vote on the subject matter, voting as a single class. Abstentions will have the same effect as a vote “Against” on the outcome of Proposal 3, and broker non-votes will have no effect on this Proposal. However, because this Proposal has four choices, it is possible that no choice will receive a majority of the voting power. If no choice receives a majority of the voting power our board of directors will consider the choice that receives the highest number of votes as the choice supported by our stockholders.

You may revoke your proxy and change your vote at any time before the final vote at the Annual Meeting. You may revoke your previously delivered proxy and vote again by signing and returning a new proxy card or voting instruction form with a later date or by attending the Annual Meeting online and voting. Your attendance at the Annual Meeting online will not automatically revoke your proxy unless you vote at the Annual Meeting or specifically request that your prior proxy be revoked by delivering to the Company’s Chief Legal Officer & Secretary at 450 Lexington Avenue, 31^st Floor, New York, New York 10017 a written notice of revocation prior to the Annual Meeting.

Please note, however, that if your shares are held of record by a broker, you must instruct your broker, bank or other nominee that you wish to change your vote by following the procedures on the voting form provided to you by the broker, bank or other nominee.

If you sign your proxy card without providing further instructions, your shares will be voted “FOR” each of the director nominees (Proposal 1); “FOR” the ratification of the selection of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending March 31, 2023 (Proposal 2); and for a frequency of “1 YEAR” on a non-binding and advisory basis, for future votes to approve on a non-binding, advisory basis, the compensation of our named executive officers (Proposal 3).

The final voting results will be tallied by the inspector of election and published in the Company’s Current Report on Form 8-K, which the Company will file with the SEC within four business days following the Annual Meeting.

The Company will bear the cost of soliciting proxies in the accompanying form and will reimburse brokerage firms and others for expenses involved in forwarding proxy materials to beneficial owners or soliciting their execution. In addition to solicitations by mail, the Company, through its directors and officers, may solicit proxies in person, by telephone or by electronic means. Such directors and officers will not receive any special remuneration for these efforts.

Similarly, if an address is shared with another stockholder and together, both of the stockholders would like to receive only a single set of our disclosure documents, the stockholders should follow these instructions: If the shares are registered in the name of the stockholder, the stockholder should notify us by email at shareholders@stepstonegroup.com, by calling 212-351-6100 or in writing, c/o our Chief Legal Officer & Secretary, at StepStone Group Inc., 450 Lexington277 Park Avenue, 3145^stth Floor, New York, New York 1001710172, to inform us of his or her request. If a broker holds the shares, the stockholder should contact such broker directly.

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