The securities listed above may be offered and sold by us or may be offered and sold, from time to time, by one or more selling securityholders to be identified in the future, including on a delayed or continuous basis. We will provide the specific terms of these securities in supplements to this prospectus. You should read this prospectus and the applicable prospectus supplement, as well as the documents incorporated and deemed to be incorporated by reference in this prospectus and the applicable prospectus supplement, carefully before you invest in the securities described in the applicable prospectus supplement.

This prospectus may not be used to sell securities unless accompanied by the applicable prospectus supplement.

Our common stock is listed on the Nasdaq Global Select Market under the trading symbol “PENN.”

Investing in our securities involves risks. You should carefully consider the risk factors referred to on page 5 of this prospectus, in any applicable prospectus supplement and in the documents incorporated by reference or deemed incorporated by reference in this prospectus and any applicable prospectus supplement, before you invest in our securities.

None of the U.S. Securities and Exchange Commission, any state securities commission, any state gaming commission or any other gaming authority or other regulatory agency has approved or disapproved of these securities or passed upon the accuracy or adequacy of this prospectus. Any representation to the contrary is a criminal offense.

Unless the context requires otherwise, references to “PENN Entertainment,” “Penn National Gaming, Inc.” the “Company,” “we,” “us,” “our” or similar terms are to PENN Entertainment, Inc. and its subsidiaries. References to “$” and “dollars” are to United States dollars.

This prospectus, any applicable prospectus supplement and any free writing prospectus filed by us do not constitute an offer to sell or the solicitation of an offer to buy any securities other than the registered securities to which they relate, nor do they constitute an offer to sell or the solicitation of an offer to buy securities in any jurisdiction to any person to whom it is unlawful to make such offer or solicitation in such jurisdiction.

For investors outside of the United States, neither we nor any selling securityholders have done anything that would permit the offering, possession or distribution of this prospectus in any jurisdiction where action for that purpose is required, other than in the United States. You are required to inform yourselves about and to observe any restrictions relating to the offering, possession or distribution of this prospectus outside of the United States.

This prospectus is a part of a registration statement that we filed on Form S-3 with the Securities and Exchange Commission (the “SEC”) under a “shelf” registration process. Under this shelf registration process, we may, from time to time, offer and sell, either separately or together, common stock, preferred stock, depositary shares or debt securities in one or more offerings.

Each time we offer and sell securities, we will provide a prospectus supplement or other type of offering document or supplement (together referred to herein as a “prospectus supplement”) that will contain specific information about the terms of that offering. Any applicable prospectus supplement or free writing prospectus may also add, update or change information contained in this prospectus, and accordingly, to the extent inconsistent, information in this prospectus is superseded by the information in such applicable prospectus supplement or free writing prospectus. You should read this prospectus and any applicable prospectus supplement together with the additional information described under the heading “Where You Can Find More Information.”

This prospectus contains summaries of certain provisions contained in key documents described in this prospectus. All of the summaries are qualified in their entirety by the actual documents, which you should review before making your investment decision. Copies of the documents referred to herein have been filed, or will be filed or incorporated by reference as exhibits to the registration statement of which this prospectus is a part, and you may obtain copies of those documents as described below under “Where You Can Find More Information.”

You should rely only on the information contained or incorporated or deemed incorporated by reference in this prospectus, in any applicable prospectus supplement or in any free writing prospectus filed by us with the SEC. We have not authorized anyone to provide any information other than that contained in this prospectus or in any prospectus supplement or free writing prospectus prepared by or on behalf of us or to which we may have referred you. We do not take any responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We have not authorized any other person to provide you with different or additional information, and we are not making an offer to sell securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus is accurate only as of the date hereof or, in the case of information incorporated or deemed incorporated by reference herein, as of the date thereof, or, in each case, as of any earlier date as of which such information is given, regardless of the time of delivery of the prospectus or any sale of securities. Our business, financial condition, results of operations and prospects may have changed since the date of such information.

We file annual, quarterly and current reports, proxy statements and other information with the SEC. Our SEC filings are available to the public from the SEC website at http://www.sec.gov.

The SEC allows us to incorporate by reference the information we file with them, which means that we can disclose important information to you by referring you to those documents. The information incorporated by reference is considered to be a part of this prospectus, and later information that we file with the SEC will automatically update and, to the extent inconsistent, supersede this information. SEC rules and regulations also permit us to “furnish” rather than “file” certain reports and information with the SEC. Any such reports or information which we “furnish” or have “furnished” shall not be deemed to be incorporated by reference into or otherwise become a part of this prospectus, regardless of when furnished to the SEC. We incorporate by reference the following documents listed below and any future filings made with the SEC under Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) (other than, in each case, information deemed to have been furnished and not filed in accordance with SEC rules), on or after the date of this prospectus until we have terminated the offerings of all of the securities to which this prospectus relates:

Information that becomes a part of this prospectus after the date of this prospectus will automatically update and, to the extent inconsistent, replace information in this prospectus and information previously filed with the SEC.

You may request a copy of these filings (other than an exhibit to a filing unless that exhibit is specifically incorporated by reference into that filing), at no cost, by writing or calling us at the following address:

Certain of our SEC filings, including our Annual Reports on Form 10-K and our Quarterly Reports on Form 10-Q, can be viewed and printed from the investor relations section of our website at www.pennentertainment.com free of charge. We have included our website address for the information of prospective investors and do not intend it to be an active link to our website. Information contained on our website is not part of this prospectus or any accompanying prospectus supplement (or any document incorporated by reference herein or therein), and you should not rely on that information in making your investment decision unless that information is also in this prospectus or any accompanying prospectus supplement or has been expressly incorporated by reference into this prospectus or any accompanying prospectus supplement. Our common stock is listed on the Nasdaq Global Select Market under the symbol “PENN.” You may inspect reports, proxy statements and other information about us at the office of Nasdaq, One Liberty Plaza, 165 Broadway, New York, New York 10006.

This prospectus includes “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are included throughout the document, including within “Risk Factors,” and relate to our business strategy, prospects and financial position. These statements can be identified by the use of forward-looking terminology such as “expects,” “believes,” “estimates,” “projects,” “intends,” “plans,” “goal,” “seeks,” “may,” “will,” “should,” or “anticipates” or the negative or other variations of these or similar words, or by discussions of future events, strategies or risks and uncertainties. Specifically, forward-looking statements include, but are not limited to, statements regarding: the Company’s expectations of future results of operations and financial condition; the Company’s expectations regarding the future success of theScore Bet, Hollywood iCasino and its other digital offerings; the Company’s expectations with respect to share repurchases; the Company’s expectations that its portfolio of assets provides a benefit of geographically-diversified cash flows from operations; management’s plans and strategies for future operations, including statements relating to the Company’s plan to expand gaming operations through the implementation and execution of a disciplined capital expenditure program at our existing properties, the pursuit of strategic acquisitions and investments, and the development of new gaming properties, including the development projects and the anticipated benefits; improvements, expansions or relocations of our existing properties; entrance into new jurisdictions; expansion of gaming in existing jurisdictions; strategic investments and acquisitions; cross-sell opportunities between our retail gaming, online sports betting (“OSB”), and iCasino businesses; our ability to obtain financing for our development projects on attractive terms; the timing, cost and expected impact of planned capital expenditures on the Company’s results of operations; and the actions of regulatory, legislative, executive or judicial decisions at the federal, state, provincial or local level with regard to our business and the impact of any such actions. Such statements are all subject to risks, uncertainties and changes in circumstances that could significantly affect the Company’s future financial results and business.

Accordingly, the Company cautions that the forward-looking statements contained herein are qualified by important factors that could cause actual results to differ materially from those reflected by such statements. Such factors include: the effects of economic and market conditions in the markets in which the Company operates or otherwise, including the impact of global supply chain disruptions, price inflation, changes in interest rates, economic downturns, changes in trade policies, and geopolitical and regulatory uncertainty; competition with other retail and online gaming and sports betting, entertainment and sports content experiences; the timing, cost and expected impact of product and technology investments; risks relating to operations, permits, licenses, financings, approvals and other contingencies in connection with growth in new or existing jurisdictions; our ability to successfully acquire and integrate new properties and operations and achieve expected synergies from acquisitions; the availability of future borrowings under our credit facilities or other sources of capital to enable us to service our indebtedness, make anticipated capital expenditures or pay off or refinance our indebtedness prior to maturity; the impact of indemnification obligations under the Barstool SPA (as defined in the documents incorporated by reference herein); our ability to realize the anticipated benefits of our realigned digital strategy; our ability to attract and retain user adoption of theScore Bet and Hollywood iCasino apps in a rapidly evolving and highly competitive market; the outcome of any legal proceedings that may be instituted against the Company, or its respective directors, officers or employees; the ability of the Company to retain and hire key personnel; the impact of new or changes in current laws, regulations, rules or other industry standards; the impact of activist shareholders; adverse outcomes of litigation involving the Company; our ability to maintain our gaming licenses and concessions and comply with applicable gaming law, changes in current laws, regulations, rules or other industry standards; and other factors included in “Risk Factors” of this prospectus, the 2025 Form 10-K, subsequent Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, each as filed with the SEC.

In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed in this prospectus may not occur and actual results could differ materially from those anticipated or implied in the forward-looking statements. All forward-looking statements in this prospectus are based on information available to us as of the date hereof, such information may be limited or incomplete, and we assume no obligation to update any such forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law. These statements are inherently uncertain, and investors are cautioned not to unduly rely upon these statements. All subsequent written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the cautionary statements included in this prospectus.

PENN Entertainment (f/k/a Penn National Gaming, Inc.) operates in 27 jurisdictions throughout North America, with a broadly diversified portfolio of casinos, racetracks, and OSB and iCasino offerings. PENN’s focus is on organic cross-sell opportunities, reinforced by its market-leading retail casinos, sports media assets and technology, including a proprietary state-of-the-art, fully integrated digital sports betting and iCasino platform, and an in-house iCasino content studio. The Company’s portfolio is further bolstered by its industry-leading PENN Play™ customer loyalty program, offering its over 33 million members a unique set of rewards and experiences.

We are organized under the laws of the Commonwealth of Pennsylvania. The address and telephone number of our executive offices are 825 Berkshire Blvd., Suite 200, Wyomissing, Pennsylvania 19610, and (610) 373-2400. Our common stock is listed on the NASDAQ Global Select Market under the symbol “PENN.”

We may use or incorporate by reference in this prospectus data and industry forecasts which we have obtained from internal surveys, market research, publicly available information and industry publications. Industry publications generally state that the information they provide has been obtained from sources believed to be reliable but that the accuracy and completeness of such information is not guaranteed. Similarly, we believe that the surveys and market research we or others have performed are reliable, but we have not independently verified this information.

Investment in any securities offered pursuant to this prospectus and the applicable prospectus supplement involves risks. You should carefully consider the risk factors incorporated by reference from the 2025 Form 10-K and any subsequent Quarterly Reports on Form 10-Q or Current Reports on Form 8-K filed after the date of this prospectus, all other information contained or incorporated by reference in this prospectus, as updated by our subsequent filings under the Exchange Act, and the risk factors and other information contained in the applicable prospectus supplement before acquiring any of such securities. The occurrence of any of these risks, or additional risks and uncertainties not presently known to us, could materially and adversely affect our business, financial condition or results of operations and cause the value of our securities to decline. You could lose all or part of your investment in the offered securities. See also “Forward-Looking Statements.”

We intend to use the net proceeds from the sales of the securities as set forth in the applicable prospectus supplement.

The description of our common stock, preferred stock, depositary shares or debt securities, as applicable, will be provided in a prospectus supplement. Each time we offer securities with this prospectus, the terms of that offering, including the specific amounts, prices and terms of the securities offered, and, if applicable, information about the selling securityholders, will be contained in the applicable prospectus supplement and other offering materials relating to such offering or in other filings we make with the SEC under the Exchange Act, which are incorporated by reference herein.

Unless otherwise indicated in the applicable prospectus supplement, the validity of any securities to be offered will be passed upon for us by Skadden, Arps, Slate, Meagher & Flom LLP, with respect to certain of our securities, or Ballard Spahr LLP, with respect to certain of our securities. Any underwriters will be represented by their own legal counsel.

The financial statements as of December 31, 2025 and 2024, and for each of the two years in the period ended December 31, 2025, and management’s assessment of the effectiveness of internal control over financial reporting (which is included in Management’s Report on Internal Control over Financial Reporting) as of December 31, 2025 incorporated in this prospectus by reference to the Annual Report on Form 10-K for the year ended December 31, 2025 have been so incorporated in reliance on the report of PricewaterhouseCoopers LLP, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting.

The financial statements of PENN Entertainment Inc. for the period ended December 31, 2023, incorporated by reference in this prospectus, have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report. Such financial statements are incorporated by reference in reliance upon the report of such firm, given their authority as experts in accounting and auditing.

The following table sets forth the various expenses to be incurred in connection with the sale and distribution of the securities being registered hereby, all of which will be borne by PENN Entertainment, Inc. (the “Company”).

Under Sections 1741 and 1742 of the Pennsylvania Business Corporation Law, as amended (“PBCL”), a business corporation has the power to indemnify any person who was or is a party, or is threatened to be made a party, to any threatened, pending or completed action or proceeding, whether civil, criminal, administrative or investigative, by reason of the fact that such person is or was a representative of the corporation, or is or was serving at the request of the corporation as a director or officer of another corporation or other enterprise, against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by such person in connection with such action or proceeding, if such person acted in good faith in a manner he or she reasonably believed to be in, or not opposed to, the best interests of the corporation, and, with respect to any criminal proceeding, had no reasonable cause to believe his or her conduct was unlawful. In the case of a threatened, pending or completed action or proceeding by or in the right of the corporation, such indemnification only covers expenses (including attorneys’ fees) actually and reasonably incurred in defense and settlement of such action and excludes judgments and amounts paid in settlement with respect to such action or proceeding, and no indemnification can be made for expenses if such person has been adjudged to be liable to the corporation unless, and only to the extent that, a court determines upon application that, despite the adjudication of liability but in view of all the circumstances, such person is fairly and reasonably entitled to indemnity for the expenses that the court deems proper.

In addition, Section 1744 of the PBCL provides that, unless ordered by a court, any indemnification referred to above shall be made by the corporation only as authorized in the specific case upon a determination that indemnification of the representative is proper in the circumstances because the indemnitee has met the applicable standard of conduct. Such determination shall be made:

Notwithstanding the above, Section 1743 of the PBCL provides that, to the extent that a director or officer of a business corporation has been successful on the merits or otherwise in defense of a proceeding referred to above, or in

defense of any claim, issue or matter therein, such person shall be indemnified against expenses (including attorneys’ fees) actually and reasonably incurred by such person in connection therewith.

Further, Section 1745 of the PBCL provides that expenses (including attorneys’ fees) incurred by an officer or director of a business corporation in defending any such proceeding may be paid by the corporation in advance of the final disposition of the proceeding upon receipt of an undertaking to repay the amount advanced if it is ultimately determined that the indemnitee is not entitled to be indemnified by the corporation.

Also, Section 1746 of the PBCL provides that the indemnification and advancement of expenses provided by, or granted pursuant to, the foregoing provisions shall not be deemed exclusive of any other rights to which a person seeking indemnification or advancement of expenses may be entitled under any bylaw, agreement, vote of shareholders or disinterested directors or otherwise, and that indemnification may be granted under any bylaw, agreement, vote of shareholders or directors or otherwise for any action taken or any failure to take any action whether or not the corporation would have the power to indemnify the person under any other provision of law and whether or not the indemnified liability arises or arose from any action by or in the right of the corporation; provided, however, that no indemnification may be made in any case where the act or failure to act giving rise to the claim for indemnification is determined by a court to have constituted willful misconduct or recklessness.

Section 1747 of the PBCL permits a Pennsylvania business corporation to purchase and maintain insurance on behalf of any person who is or was a director or officer of the corporation, or is or was serving at the request of the corporation as a director or officer of another corporation or other enterprise, against any liability asserted against such person and incurred by such individual in any such capacity, or arising out of his or her status as such, whether or not the corporation or other enterprise would have the power to indemnify the person against such liability under the provisions described above.

Section 8.01 of the Sixth Amended and Restated Bylaws of the Company (the “PENN Bylaws”) provide for indemnification, to the fullest extent permitted by Pennsylvania law, for directors, officers and certain employees against all liability, loss and expense (including attorneys’ fees, judgments, fines and amounts paid in settlement) actually and reasonably incurred by such person by reason of the fact that such person is or was a director or officer of PENN, or is or was serving at the request of PENN as a director, officer, employee, agent, fiduciary or trustee of another corporation or of a partnership, joint venture, trust, employee benefit plan or other enterprise or entity. The PENN Bylaws also require the advancement of expenses incurred by an indemnified representation in connection with an indemnified matter.

Section 8.07 of the PENN Bylaws provides that, among other things, it may purchase and maintain insurance or enter into indemnifications to secure its indemnification provisions.

PENN maintains directors’ and officers’ liability insurance covering its directors and officers with respect to liabilities, which they may incur in connection with their serving in such capacity. Under this insurance, PENN may receive reimbursement for amounts as to which the directors and officers are indemnified by PENN under the bylaw indemnification provisions described above. Such insurance also provides certain additional coverage for the directors and officers against certain liabilities even though such liabilities may not be covered by the bylaw indemnification provisions described above.

As permitted by Section 1713(a) of the PBCL, Section 4.14 of the PENN Bylaws provide that no director shall be personally liable, as such, for monetary damages for any action taken, or failure to take any action, unless (i) the director has breached or failed to perform the duties of his or her office under the articles, bylaws or the PBCL; and (ii) the breach or failure to perform constitutes self-dealing, willful misconduct or recklessness. Section 1713(b) of the PBCL states that this exculpation from liability does not apply to the responsibility or liability of a director pursuant to any criminal statute or the liability of a director for the payment of taxes pursuant to federal, state or local law. It is uncertain whether this provision will control with respect to liabilities imposed upon directors by federal law, including federal securities laws. Section 1715(d) of the PBCL creates a presumption, subject to exceptions, that a director acted in the best interests of the corporation. Section 1712 of the PBCL, in defining the standard of care a director owes to the corporation, provides that a director stands in a fiduciary relation to the corporation and must perform his or her duties as a director or as a member of any committee of the board of directors in good faith, in a manner he or she reasonably believes to be in the best interests of the corporation and with such care, including the skill and diligence, that a person of ordinary prudence would use under similar circumstances and reasonable inquiry into those issues.

The foregoing summaries are subject to the complete text of the PBCL and the PENN Bylaws and are qualified in their entirety by reference thereto.

Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Wyomissing, Commonwealth of Pennsylvania, on this 24^th day of April, 2026.

BE IT KNOWN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Jay A. Snowden and Christopher Rogers and each of them, his or her true and lawful attorney(s)-in-fact and agent(s), with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any or all amendments to this Registration Statement and to file the same, with all exhibits and schedules thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney(s)-in-fact and agent(s) full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney(s)-in-fact and agent(s), or their substitute(s), may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.