Filed Pursuant to Rule 424(b)(3)

Registration No. 333-199175

PROSPECTUS

23,418,172 Shares

COMMON STOCK

This prospectus relates to the sale of up to 23,418,172 shares of our common stock by Aspire Capital Fund, LLC. Aspire Capital is also referred to in this prospectus as the selling stockholder. The prices at which the selling stockholder may sell the shares will be determined by the prevailing market price for the shares or in negotiated transactions. We will not receive proceeds from the sale of the shares by the selling stockholder. However, we may receive proceeds of up to $10.0 million from the sale of our common stock to the selling stockholder, pursuant to a common stock purchase agreement entered into with the selling stockholder on August 25, 2014, once the registration statement, of which this prospectus is a part, is declared effective.

The selling stockholder is an “underwriter” within the meaning of the Securities Act of 1933, as amended. We will pay the expenses of registering these shares, but all selling and other expenses incurred by the selling stockholder will be paid by the selling stockholder.

Our common stock is listed on NYSE MKT under the ticker symbol “IBIO”. On October 17, 2014, the last reported sale price per share of our common stock was $3.21 per share.

You should read this prospectus and any prospectus supplement, together with additional information described under the heading “Where You Can Find More Information,” carefully before you invest in any of our securities.

Investing in our securities involves a high degree of risk. See “Risk Factors” on page 4 of this prospectus.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this prospectus is October 20, 2014.

TABLE OF CONTENTS

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You should rely only on the information contained in or incorporated by reference in this prospectus. We have not authorized anyone to provide you with different information. We are not making an offer of these securities in any state where the offer is not permitted. You should assume that information contained in this prospectus, or in any document incorporated by reference, is accurate only as of any date on the front cover of the applicable document.

RISK FACTORS

A purchase of shares of our Common Stock is an investment in our securities and involves a high degree of risk. You should carefully consider the risks and uncertainties and all other information contained in or incorporated by reference in this prospectus, including the risks and uncertainties discussed under “Risk Factors” in our Annual Report on Form 10-K for the year ended June 30, 2014. All of these risk factors are incorporated by reference herein in their entirety. If any of these risks occur, either alone or in combination with other factors, our business, financial condition or operating results could be adversely affected and the trading price of common stock may decline. Moreover, readers should note this is not an exhaustive list of the risks we face; some risks are unknown or not quantifiable, and other risks that we currently perceive as immaterial may ultimately prove more significant than expected. Statements about plans, predictions or expectations should not be construed to be assurances of performance or promises to take a given course of action.

FORWARD-LOOKING STATEMENTS

This prospectus and the documents incorporated by reference into it contain forward-looking statements that involve risks and uncertainties. These forward-looking statements are not historical facts but rather are plans and predictions based on current expectations, estimates and projections about our industry, our beliefs and assumptions. We use words such as “anticipate,” “expect,” “intend,” “plan,” “believe,” “seek,” “estimate” and variations of these words and similar expressions to identify forward-looking statements. These statements are not guarantees of future performance and are subject to certain risks, uncertainties and other factors, some of which are beyond our control, are difficult to predict and could cause actual results to differ materially from those expressed or forecasted in the forward-looking statements. These risks and uncertainties include those described in the section above entitled “Risk Factors.” You should not place undue reliance on these forward-looking statements, which reflect our view only as of the date of this prospectus.

USE OF PROCEEDS

This prospectus relates to shares of our common stock that may be offered and sold from time to time by Aspire Capital. We will not receive any proceeds upon the sale of shares by Aspire Capital. However, we may receive proceeds up to $10 million under the Purchase Agreement with Aspire Capital. The proceeds received from the sale of the shares under the Purchase Agreement will be used for working capital and general corporate purposes. This anticipated use of net proceeds from the sale of our common stock to Aspire Capital under the Purchase Agreement represents our intentions based upon our current plans and business conditions.

The aspire capital transaction

General

On August 25, 2014, we entered into the Purchase Agreement which provides that, upon the terms and subject to the conditions and limitations set forth therein, Aspire Capital is committed to purchase up to an aggregate of $10.0 million of our shares of common stock over the term of the Purchase Agreement. In consideration for entering into the Purchase Agreement, following the approval of the issuance of the shares by the Principal Market, we issued to Aspire Capital the Commitment Shares. Following the approval of the issuance of the shares by the Principal Market, we sold to Aspire Capital the Initial Purchase Shares for an aggregate purchase price of $500,000. Concurrently with entering into the Purchase Agreement, we also entered into the Registration Rights Agreement, in which we agreed to file one or more registration statements as permissible and necessary to register under the Securities Act, the sale of the shares of our common stock that have been and may be issued to Aspire Capital under the Purchase Agreement.

As of October 1, 2014, there were 65,642,095 shares of our common stock outstanding (28,253,959 shares held by non-affiliates) excluding the 1,818,172 shares offered that have been issued to Aspire Capital and the additional 21,600,000 shares that may be issuable to Aspire Capital pursuant to the Purchase Agreement. If all of such 23,418,172 shares of our common stock offered hereby were issued and outstanding as of the date hereof, such shares would represent 26.29% of the total common stock outstanding or 45.3% of the non-affiliate shares of common stock outstanding as of the date hereof. The number of shares of our common stock ultimately offered for sale by Aspire Capital is dependent upon the number of shares purchased by Aspire Capital under the Purchase Agreement.

Pursuant to the Purchase Agreement and the Registration Rights Agreement, we have registered 23,418,172 shares of our common stock under the Securities Act, which includes the Commitment Shares and Initial Purchase Shares that have already been issued to Aspire Capital and 21,600,000 shares of common stock which we may issue to Aspire Capital. All 23,418,172 shares of common stock are being offered pursuant to this prospectus. Under the Purchase Agreement, we may have the right but not the obligation to issue more than the 23,418,172 shares of common stock included in this prospectus to Aspire Capital. Pursuant to the terms of NYSE MKT’s approval of our listing application for the shares to be issued under the Purchase Agreement, we may not issue more than 13,062,776 shares of our common stock pursuant to the Purchase Agreement, unless our stockholders approve the transaction contemplated by the Purchase Agreement. We may, but we are under no obligation to, request our stockholders to approve the transaction contemplated by the Purchase Agreement.

On October 20, 2014, the conditions necessary for purchases under the Purchase Agreement to commence were satisfied. On any trading day on which the closing sale price of our common stock is not less than the Floor Price ($0.44, the closing sale price of our shares on the business day before we entered into the Purchase Agreement), we have the right, in our sole discretion, to present Aspire Capital with a Purchase Notice, directing Aspire Capital (as principal) to purchase up to 150,000 shares of our common stock per business day, up to an additional $9.5 million of our common stock in the aggregate at a Purchase Price calculated by reference to the prevailing market price of our common stock over the preceding 10-business day period (as more specifically described below); however, no sale pursuant to a Purchase Notice may exceed $500,000 per trading day.

In addition, on any date on which we submit a Purchase Notice to Aspire Capital for 150,000 Purchase Shares and out stock price is not less than the Floor Price ($0.44, the closing sale price of our shares on the business day before we entered into the Purchase Agreement), we also have the right, in our sole discretion, to present Aspire Capital with a VWAP Purchase Notice directing Aspire Capital to purchase an amount of stock equal to up to 30% of the aggregate shares of the Company’s common stock traded on NYSE MKT on the next trading day, subject to the VWAP Purchase Share Volume Maximum and the VWAP Minimum Price Threshold. The VWAP Purchase Price is calculated by reference to the prevailing market price of our common stock (as more specifically described below).

The Purchase Agreement provides that the Company and Aspire Capital shall not effect any sales under the Purchase Agreement on any purchase date where the closing sale price of our common stock is less than the Floor Price ($0.44, the closing sale price of our shares on the business day before we entered into the Purchase Agreement). The Floor Price will be $0.20 per share of Common Stock, if our stockholders approve the transaction contemplated by the Purchase Agreement. We may, but we are under no obligation to, request our stockholders to approve the transaction contemplated by the Purchase Agreement. There are no trading volume requirements or restrictions under the Purchase Agreement, and we will control the timing and amount of any sales of our common stock to Aspire Capital. Aspire Capital has no right to require any sales by us, but is obligated to make purchases from us as we direct in accordance with the Purchase Agreement. There are no limitations on use of proceeds, financial or business covenants, restrictions on future fundings, rights of first refusal, participation rights, penalties or liquidated damages in the Purchase Agreement. The Purchase Agreement may be terminated by us at any time, at our discretion, without any penalty or cost to us.

Purchase of Shares Under The Common Stock Purchase Agreement

Under the common stock Purchase Agreement, on any trading day selected by us on which the closing sale price of our common stock exceeds the Floor Price, we may direct Aspire Capital to purchase up to 150,000 shares of our common stock per trading day. The Purchase Price of such shares is equal to the lesser of:

In addition, on any date on which we submit a Purchase Notice to Aspire Capital for purchase of 150,000 shares, we also have the right to direct Aspire Capital to purchase an amount of stock equal to up to 30% of the aggregate shares of the our common stock traded on NYSE MKT on the next trading day, subject to the VWAP Purchase Share Volume Maximum and the VWAP Minimum Price Threshold, which is equal to the greater of (a) 80% of the closing price of the Company’s common stock on the business day immediately preceding the VWAP Purchase Date or (b) such higher price as set forth by the Company in the VWAP Purchase Notice. The VWAP Purchase Price of such shares is the lower of:

The purchase price will be adjusted for any reorganization, recapitalization, non-cash dividend, stock split, or other similar transaction occurring during the trading day(s) used to compute the purchase price. We may deliver multiple Purchase Notices and VWAP Purchase Notices to Aspire Capital from time to time during the term of the Purchase Agreement, so long as the most recent purchase has been completed.

Minimum Share Price

Under the Purchase Agreement, we and Aspire Capital may not effect any sales of shares of our common stock under the Purchase Agreement on any trading day that the closing sale price of our common stock is less than the Floor Price of $0.44 per share (the closing sale price of our shares on the business day before we entered into the Purchase Agreement). The Floor Price will be $0.20 per share of Common Stock, if our stockholders approve the transaction contemplated by the Purchase Agreement. We may, but we are under no obligation to, request our stockholders to approve the transaction contemplated by the Purchase Agreement.

Events of Default

Generally, Aspire Capital may terminate the Purchase Agreement upon the occurrence of any of the following events of default:

Our Termination Rights

The Purchase Agreement may be terminated by us at any time, at our discretion, without any penalty or cost to us.

No Short-Selling or Hedging by Aspire Capital

Aspire Capital has agreed that neither it nor any of its agents, representatives and affiliates shall engage in any direct or indirect short-selling or hedging of our common stock during any time prior to the termination of the Purchase Agreement.

Effect of Performance of the Purchase Agreement on Our Stockholders

The Purchase Agreement does not limit the ability of Aspire Capital to sell any or all of the 23,418,172 shares registered in this offering. It is anticipated that shares registered in this offering will be sold over a period of up to approximately 24 months from the date of this prospectus. The sale by Aspire Capital of a significant amount of shares registered in this offering at any given time could cause the market price of our common stock to decline and/or to be highly volatile. Aspire Capital may ultimately purchase all, some or none of the 21,600,000 shares of common stock not yet issued but registered in this offering. Pursuant to the terms of NYSE MKT’s approval of our listing application for the shares to be issued under the Purchase Agreement, we may not issue more than 13,062,776 shares of our common stock pursuant to the Purchase Agreement, unless our stockholders approve the transaction contemplated by the Purchase Agreement. We may, but we are under no obligation to, request our stockholders to approve the transaction contemplated by the Purchase Agreement. After it has acquired shares pursuant to the Purchase Agreement, it may sell all, some or none of such shares. Therefore, sales to Aspire Capital by us pursuant to the Purchase Agreement also may result in substantial dilution to the interests of other holders of our common stock. However, we have the right to control the timing and amount of any sales of our shares to Aspire Capital and the Purchase Agreement may be terminated by us at any time at our discretion without any penalty or cost to us.

Percentage of Outstanding Shares After Giving Effect to the Purchased Shares Issued to Aspire Capital

In connection with entering into the Purchase Agreement, we authorized the sale to Aspire Capital of up to $10.0 million of our shares of common stock. However, we estimate that we will sell no more than 22,736,354 shares to Aspire Capital under the Purchase Agreement (exclusive of the Commitment Shares), all of which are included in this offering. Subject to any required approval by our board of directors, we may have the right but not the obligation to issue more than the 23,418,172 shares included in this prospectus to Aspire Capital under the Purchase Agreement. In the event we elect to issue more than 23,418,172 shares under the Purchase Agreement, we will be required to file a new registration statement and have it declared effective by the SEC. The number of shares ultimately offered for sale by Aspire Capital in this offering is dependent upon the number of shares purchased by Aspire Capital under the Purchase Agreement. Pursuant to the terms of NYSE MKT’s approval of our listing application for the shares to be issued under the Purchase Agreement, we may not issue more than 13,062,776 shares of our common stock pursuant to the Purchase Agreement, unless our stockholders approve the transaction contemplated by the Purchase Agreement. We may, but we are under no obligation to, request our stockholders to approve the transaction contemplated by the Purchase Agreement. The following table sets forth the number and percentage of outstanding shares to be held by Aspire Capital after giving effect to the sale of shares of common stock issued to Aspire Capital at varying purchase prices:

dilution

The sale of our common stock to Aspire Capital pursuant to the Purchase Agreement will have a dilutive impact on our stockholders. As a result, our net income per share, if any, would decrease in future periods and the market price of our common stock could decline. In addition, the lower our stock price is at the time we exercise our right to sell shares to Aspire Capital, the more shares of our common stock we will have to issue to Aspire Capital pursuant to the Purchase Agreement and our existing stockholders would experience greater dilution.

After giving effect to the sale in this offering of 23,418,172 shares of common stock at an assumed average sale price of $.58 per share (based on the lowest sales price of our common stock as of October 1, 2014), our pro forma as adjusted net tangible book value as of June 30, 2014 would have been approximately $16,551,631 or $.186 per share of common stock. This represents an immediate increase in pro forma as adjusted net tangible book value of $.132 per share to our existing stockholders and an immediate dilution of $.394 per share to our new stockholders.

SELLING STOCKHOLDER

The selling stockholder may from time to time offer and sell any or all of the shares of our common stock set forth below pursuant to this prospectus. When we refer to the “selling stockholder” in this prospectus, we mean the entity listed in the table below, and its respective pledgees, donees, permitted transferees, assignees, successors and others who later come to hold any of the selling stockholder’s interests in shares of our common stock other than through a public sale.

The following table sets forth, as of the date of this prospectus, the name of the selling stockholder for whom we are registering shares for sale to the public, the number of shares of common stock beneficially owned by the selling stockholder prior to this offering, the total number of shares of common stock that the selling stockholder may offer pursuant to this prospectus and the number of shares of common stock that the selling stockholder will beneficially own after this offering. Except as noted below, the selling stockholder does not have, or within the past three years has not had, any material relationship with us or any of our predecessors or affiliates and the selling stockholder is not or was not affiliated with registered broker-dealers.

Based on the information provided to us by the selling stockholder, assuming that the selling stockholder sells all of the shares of our common stock beneficially owned by it that have been registered by us and does not acquire any additional shares during the offering, the selling stockholder will not own any shares other than those appearing in the column entitled “Beneficial Ownership After This Offering.” We cannot advise you as to whether the selling stockholder will in fact sell any or all of such shares of common stock. In addition, the selling stockholder may have sold, transferred or otherwise disposed of, or may sell, transfer or otherwise dispose of, at any time and from time to time, the shares of our common stock in transactions exempt from the registration requirements of the Securities Act of 1933 after the date on which it provided the information set forth in the table below.

_____________________________

* Represents less than 1% of outstanding shares.

MANAGEMENT

The following table sets forth the names and ages of our directors and our executive officers:

The following are brief biographies of each director and executive officer:

Robert B. Kay has served as our Executive Chairman and Chief Executive Officer since we became a publicly traded company in August 2008. Previously, Mr. Kay was a founder and senior partner of the New York law firm of Kay Collyer & Boose LLP, with a particular focus on mergers and acquisitions and joint ventures. Mr. Kay received his B.A. from Cornell University’s College of Arts & Sciences and his J.D. from New York University Law School.

Robert L. Erwin has been our President since we became a publicly traded company in August 2008. Mr. Erwin led Large Scale Biology Corporation from its founding in 1988 through 2003, including a successful initial public offering in 2000, and continued as non-executive Chairman until 2006. He served as Chairman of Icon Genetics AG from 1999 until its acquisition by a subsidiary of Bayer AG in 2006. Mr. Erwin recently served as Managing Director of Bio-Strategic Directors LLC, providing consulting services to the life sciences industry. He is currently Chairman of Novici Biotech, a private biotechnology company and a Director of Oryn Therapeutics. Mr. Erwin’s non-profit work focuses on applying scientific advances to clinical medicine, especially in the field of oncology. He is co-founder, President and Director of the Marti Nelson Cancer Foundation, Oncology. Mr. Erwin received his BS degree with Honors in Zoology and an MS degree in Genetics from Louisiana State University.

Mark Giannone has served as our Chief Financial Officer since December 2013. Mr. Giannone has been a member of the accounting firm of Bosco Giannone LLC since its formation in 1999. His prior experience included employment as a senior accountant at Kenneth Leventhal & Co. (acquired by Ernst &Young LLP) and as a tax manager at BDO Seidman, a lecturer in various continuing education programs for the New York State Society of Certified Public Accountants and New York University.

Terence E. Ryan, Ph.D. has been our chief scientific officer since March 2012, and prior to that served as senior vice president since joining the Company in July 2010. Dr. Ryan previously served as assistant vice president, Systems Biology at Wyeth Pharmaceuticals (later Pfizer, Inc.) from 2007 to 2010, and director of Integrative Biology at GlaxoSmithKline from 2003 to 2007. He has also been director, Cell Biology at Celera Genomics from 2000 to 2003 and associate director of Cell Technologies and Protein Sciences at Regeneron Pharmaceuticals, Inc. Dr. Ryan received his A.B. in Biology from Princeton University, his M.S. and Ph.D. in Microbiology from Rutgers University and was a post-doctoral fellow in Molecular Virology at the University of Wisconsin.

General James T. Hill has been a director since we became a publicly traded company in August 2008. General Hill was the Commander of the 4-Star United States Southern Command, reporting directly to the President and Secretary of Defense at the time of his retirement from active duty. As such he led all U.S. military forces and operations in Central America, South America and the Caribbean, worked directly with U.S. Ambassadors, foreign heads of state, key Washington decision-makers, foreign senior military and civilian leaders, developing and executing United States policy. His responsibilities included management, development and execution of plans and policy within the organization including programming, communications, manpower, operations, logistics and intelligence. General Hill’s experience of implementing plans and policies within diverse geographic regions and his insights regarding the conduct of business affairs in Central and South America is a key resource for us.

Glenn Chang has been a director since we became a publicly traded company in August 2008. Since February 2014, Glenn Chang serves as Chief Financial Officer of Singer Vehicle Design, a private company in the business of automotive design and restoration. Mr. Chang served as the Chief Financial Officer of Alma Bank, a New York headquartered bank with over $900 million of assets and 13 branches in the New York City Metropolitan area from late 2012 to February 2014. Before joining Alma, from 1999 to 2012, Mr. Chang served as a founder, Director, Chief Financial Officer and consultant to First American International Bank which is the largest locally owned Chinese American Bank. Prior to that he spent 20 years at Citibank, N.A as Vice President. Mr. Chang is a retired Certified Public Accountant. Mr. Chang’s extensive executive and financial leadership in his current and former positions and his training and experience as a Certified Public Accountant adds vital expertise to our board of directors and our Audit Committee in the form of financial understanding, business perspective and audit expertise. Mr. Chang is qualified as an Audit Committee Financial Expert as defined in Regulation S-K Item 407(d)(5)(ii).

John D. McKey, Jr. has been a director since we became a publicly traded company in August 2008. Since 2003, Mr. McKey has served as of counsel at McCarthy, Summers, Bobko, Wood, Sawyer & Perry, P.A. in Stuart, Florida, and previously was a partner from 1987 through 2003. From 1977 to 1987, Mr. McKey was a partner at Gunster Yoakley in Palm Beach, Florida. Mr. McKey received his B.B.A at the University of Georgia and his J.D. from the University Of Florida College Of Law. Mr. McKey’s extensive experience representing private and public companies operating in varied business sectors brings our board insights and acumen to best corporate practices and implementation of strategic and financial plans.

Philip K. Russell, M.D. has been a director since March 2010. Major General (retired.) Russell served in the U.S. Army Medical Corps from 1959 to 1990, pursuing a career in infectious disease and tropical medicine research. Following his military service, Dr. Russell joined the faculty of Johns Hopkins University’s School of Hygiene and Public Health and worked closely with the World Health Organization as special advisor to the Children’s Vaccine Initiative. He was founding board member of the International AIDS Vaccine Initiative, and is an advisor to the Bill & Melinda Gates Foundation. He has served on numerous advisory boards of national and international agencies, including the Centers for Disease Control (“CDC”), the National Institutes of Health (“NIH”) and the Institute of Medicine. Dr. Russell is a past Chairman of the Albert B. Sabin Vaccine Institute. Dr. Russell’s extensive experience and expertise in the field of infectious diseases and his association with leading governmental and not-for-profit entities engaged in pioneering work throughout the world provides us with invaluable insights into priorities for these entities and business development opportunities for us.

Seymour Flug has been a director since December 2012. Prior to retiring, Mr. Flug was Chairman of the Board and CEO of Diners Club International and a Managing Director of Citibank. Prior to joining Citibank, Mr Flug served as Senior Vice President of Hess Oil Company. Mr. Flug began his career as Certified Public Accountant at Deloitte & Touche, a predecessor to the firm now known as Deloitte. Mr. Flug received his B.B.A from Baruch College. Mr. Flug’s experience leading a multinational company and his experience as a certified public accountant allow him to offer us unique perspectives on global business opportunities, best business practices and additional audit expertise. Mr. Flug is qualified as an Audit Committee Financial Expert as defined in Regulation S-K Item 407(d)(5)(ii).

Arthur Y. Elliott, Ph.D. has been a director since October 2010. Dr. Elliott serves as a member of the American Association for Advancement of Science, American Society for Microbiology, and American Tissue Culture Association. Prior to retiring, Dr. Elliott spent 16 years with Merck & Co., serving ultimately as Executive Director of Biological Operations, Merck Manufacturing Division, responsible for the bulk manufacture, testing, release and registration of all biological products sold. Dr. Elliott also directed the manufacturing, process development, and other operations of North American Vaccine, Inc. for six years, and most recently served as consultant to Aventis (Sanofi Pasteur) Pharmaceutical Corporation in its design and implementation of new, highly automated manufacturing facilities for influenza vaccines. Dr. Elliott has served with the United States Department of Health and Human Services (“HHS”) in the Avian Influenza Pandemic Preparedness Program in Washington, D.C. as Senior Program Manager for the Antigen Sparing Project since 2006. The program involves the cooperation of three pharmaceutical companies and four government groups (NIH, CDC, United States Food and Drug Administration, and HHS). While at Merck, he worked closely with both Merck Research Laboratories and the Merck Vaccine Division to forecast the timely transfer of technology for new and improved products from the research laboratories through the manufacturing area and into the marketing division for sales introductions. He has served as a biological consultant to the World Health Organization, NIH and The Bill & Melinda Gates Foundation. Dr. Elliott holds a Ph.D. in Virology from Purdue University, and an M.S. in Microbiology and a B.A. in Biology from North Texas State University. Dr. Elliot’s extensive experience and expertise with the manufacture of vaccines and therapeutics is particularly relevant to our business and our efforts to manufacture such products which in a key component of our business.

EXECUTIVE COMPENSATION

Summary Compensation Table

The table below summarizes the total compensation paid or earned by our principal executive officer, principal financial officer and our two other most highly compensated executive officers who were serving as executive officers at June 30, 2014, the end of our last completed fiscal year. We refer to the executive officers identified in this table as our “named executive officers”.

iBio Inc.

Summary Compensation Table

Outstanding Equity Awards at Fiscal Year-End

The following table shows information regarding unexercised stock options held by our named executive officers as of June 30, 2014.

Employment Agreements

As of June 30, 2014, we did not have any employment contracts or other similar agreements or arrangements with any of our named executive officers.

Equity Incentive Plan

On August 12, 2008, the Company adopted the iBioPharma 2008 Omnibus Equity Incentive Plan (the “Plan”) for employees, officers, directors and external service providers. In December 2013 our stockholders approved an amendment to the Plan to increase the number of shares of our common stock authorized for issuance thereunder from 10 million shares to 15 million shares. Under the provisions of the Plan, the Company may grant options to purchase stock and/or make awards of restricted stock up to an aggregate amount of 15 million shares. Stock options granted under the Plan may be either incentive stock options (as defined by Section 422 of the internal Revenue Code of 1986, as amended) or non-qualified stock options at the discretion of the board of directors. Vesting of awards occurs ratably on the anniversary of the grant date over the service period as determined at the time of grant.

DIRECTOR COMPENSATION

Compensation for our non-employee directors has historically consisted of a grant of stock options vesting over a three-year period and additional cash compensation. We do not have a fixed policy with respect to this compensation, but the compensation is generally equal for each non-employee director except in cases where a director assumes additional responsibilities above and beyond standard board service. Directors who are also our employees receive no additional compensation for their services as directors.

Director Compensation Table

The following table sets forth summary information concerning the total compensation paid to our non-employee directors for services to the Company during the fiscal year ended June 30, 2014:

CORPORATE GOVERNANCE

Board Committees

Our board of directors has the authority to appoint committees to perform certain management and administrative functions. Our board of directors has constituted audit, compensation and nominating committees.

Nominating Committee and Nomination Process

The Nominating Committee was formed to address general governance and policy oversight; succession planning; to identify qualified individuals to become prospective board members and make recommendations regarding nominations for our board of directors; to advise the board with respect to appropriate composition of board committees; to advise the board about and develop and recommend to the board appropriate corporate governance documents and assist the board in implementing guidelines; to oversee the annual evaluation of the board and our chief executive officer, and to perform such other functions as the board may assign to the committee from time to time. The Nominating Committee has a charter which is available on our website at www.ibioinc.com. The Nominating Committee consists of three independent directors: Arthur Y. Elliott, Ph.D., (Nominating Committee Chairman), Glenn Chang and General James T. Hill.

Our directors take a critical role in guiding our strategic direction and oversee the management of our company. Board candidates are considered based upon various criteria, such as their broad-based business and professional skills and experiences, a global business and social perspective, concern for the long-term interests of our stockholders and personal integrity and judgment. In addition, directors must have time available to devote to board activities and to enhance their knowledge of the life sciences industry. Accordingly, we seek to attract and retain highly qualified directors who have sufficient time to attend to their substantial duties and responsibilities.

Our board of directors believes given the diverse skills and experience required to grow our company that the input of all members of the Nominating Committee is important for considering the qualifications of individuals to serve as directors but does not have a diversity policy. Further, the Nominating Committee believes that the minimum qualifications for serving as our director are that a nominee demonstrate, by significant accomplishment in his or her field, an ability to make a meaningful contribution to the board’s oversight of our business and affairs of and have an impeccable record and reputation for honest and ethical conduct in both his or her professional and personal activities. Whenever a new seat or a vacated seat on the board is being filled, candidates that appear to best fit the needs of the board and our company are identified and unless such individuals are well known to the board, they are interviewed and further evaluated by the Nominating Committee. Candidates selected by the Nominating Committee are then recommended to the full board for their nomination to stockholders. The Nominating Committee recommends a slate of directors for election at the annual meeting. In accordance with NYSE MKT LLC rules, the slate of nominees is approved by a majority of the independent directors.

In carrying out its responsibilities, our board will consider candidates suggested by stockholders. If a stockholder wishes to formally place a candidate’s name in nomination, however, he or she must do so in accordance with the provisions of our First Amended and Restated Bylaws. Suggestions for candidates to be evaluated by the Nominating Committee must be sent to Secretary, iBio, Inc. 9 Innovation Way, Suite 100, Newark, DE 19711.

Audit Committee

The Audit Committee of the board of directors makes recommendations regarding the retention of the independent registered public accounting firm, reviews the scope of the annual audit undertaken by our independent registered public accounting firm and the progress and results of their work, reviews our financial statements, and oversees the internal controls over financial reporting and corporate programs to ensure compliance with applicable laws and regulations. The Audit Committee reviews all services performed for us by the independent registered public accounting firm and determines whether they are compatible with maintaining the registered public accounting firm's independence. The Audit Committee has a charter, which is reviewed annually and as may be required due to changes in industry accounting practices or the promulgation of new rules or guidance documents. The Audit Committee charter is available on our website at www.ibioinc.com. The Audit Committee consists of two independent directors as determined by NYSE MKT LLC listing standards: Glenn Chang (Audit Committee Chairman) and Seymour Flug. Mr. Chang and Mr. Flug are each qualified as an Audit Committee Financial Expert as defined in Regulation S-K Item 407(d)(5)(ii).

Compensation Committee

The Compensation Committee of the Board of Directors reviews and approves executive compensation policies and practices, reviews salaries and bonuses for our senior executive officers, administers our equity incentive plan and other benefit plans, and considers other matters as may, from time to time, be referred to them by our board of directors. The Compensation Committee has a charter which is available on our website at www.ibioinc.com. The members of the Compensation Committee are General James T. Hill (Compensation Committee Chairman), Arthur Y. Elliott, Ph.D. and Philip K. Russell, M.D.

Board Leadership Structure and Role in Risk Oversight

Our chief executive officer also serves as the executive chairman of our board of directors. We do not have a lead independent director. Our executive chairman, when present, presides over all meetings of our board. We believe this leadership structure is appropriate for our Company at this time because (1) of our size, (2) of the size of our bard, (3) our chief executive officer is responsible for our day-to-day operation and implementing our strategy, and (4) discussion of developments in our business and financial condition and results of operations are important parts of the discussion at meetings of our board of directors and it makes sense for our chief executive officer to chair those discussions.

Our board of directors oversees our risk management. This oversight is administered primarily through the following:

Meetings of the Board of Directors and Committees

During the fiscal year ended June 30, 2014, the board of directors held three meetings in person or by telephone and acted by unanimous written consent on four occasions and the Audit Committee held four meetings in person or by telephone. No meetings in person or by telephone were held and no actions were taken by either the Nominating Committee or Compensation Committee as matters addressable by such committees were considered and approved by the full board. Between meetings, members of the board of the directors are provided with information regarding our operations and are consulted on an informal basis with respect to pending business. Each director attended at least 75% of the aggregate of the total number of meetings of the board and the total number of meetings of the committees on which such director serves.

Although we do not have a policy with regard to board members’ attendance at our annual meetings of stockholders, all of the directors are encouraged to attend such meetings.

Stockholder Communications with the Board of Directors

Interested parties may communicate with the board of directors or specific members of the board of directors, including the independent directors and the members of the Audit Committee, by submitting correspondence addressed to the Board of Directors of iBio, Inc. c/o any specified individual director or directors at 9 Innovation Way, Suite 100, Newark, Delaware 19711. Any such correspondence will be forwarded to the indicated directors.

Code of Ethics

We have adopted a written code of ethics within the meaning of Item 406 of SEC Regulation S-K, which applies to all of our employees, including our principal executive officer and our chief financial officer, a copy of which can be found on our website at www.ibioinc.com. If we make any waivers or substantive amendments to the code of ethics that are applicable to our principal executive officer or our chief financial officer, we will disclose the nature of such waiver or amendment in a Current Report on Form 8-K in a timely manner. No waivers from any provision of our policy have been granted.

Available information about iBio

Previously filed SEC current reports, quarterly reports, annual reports, and reports under Section 16(a) of the Securities Exchange Act of 1934 are available on our website at www.ibioinc.com and in print for any stockholder upon written request to our Secretary.

MARKET FOR COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

Market Information

Our common stock is traded on the NYSE MKT under the trading symbol “IBIO.”

The following table sets forth the high and low sale prices for our common stock during the years ended June 30, 2014 and 2013 as reported by the NYSE MKT. The quotations shown represent inter-dealer prices without adjustment for retail markups, markdowns or commissions, and may not necessarily reflect actual transactions. As of October 17, 2014, the closing price of our Common Stock was $3.21 as reported on the NYSE MKT.

Holders

As of October 1, 2014, there were 81 holders of record of our common stock.

Dividends

We have never declared or paid any cash dividends on our common stock.

Equity Compensation Plans

The following table provides information regarding the status of our existing equity compensation plans at June 30, 2014:

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The following table sets forth information with respect to the beneficial ownership of our outstanding common stock as of October 1, 2014:

Except as otherwise noted in the footnotes below, to our knowledge, each of the persons named in this table has sole voting and investment power with respect to the securities indicated as beneficially owned.

* Represents less than 1% of outstanding shares.

CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

Director Independence

Our board of directors has determined that Messrs. Chang, Flug and McKey, Drs. Elliott and Russell and General Hill are each “independent directors” as such term is defined in Section 803 of the New York Stock Exchange MKT Company Guide.

Policies and Procedures for Related Person Transactions

The policy our board of directors is to review with management and our independent registered public accounting firm any related party transactions brought to the board’s attention which could reasonably be expected to have a material impact on our financial statements. The Company’s practice is for management to present to the board of directors each proposed related party transaction, including all relevant facts and circumstances relating thereto, and to update the board of directors as to any material changes to any approved related party transaction. In connection with this requirement, each of the transactions or relationships disclosed below were disclosed to and approved by our board of directors. In addition, transactions involving our directors and their affiliated entities were disclosed and reviewed by our board of directors in its assessment of our directors’ independence requirements.

Research and Development Services Vendor

In January 2012, the Company entered into an agreement with a vendor in which iBio’s President is a minority stockholder. The vendor performs laboratory feasibility analyses of gene expression, protein purification and preparation of research samples. The transaction has been conducted on an arm’s length basis at market terms. The accounts payable balance includes amounts due this vendor of approximately $38,000 and $93,000 at June 30, 2014 and 2013, respectively. Research and development expenses related to this vendor were approximately $527,000 and $424,000 for the years ended June 30, 2014 and 2013, respectively.

Consulting Services by Board Member

In February 2012, the Company entered into a business development consulting agreement with a member of the Board of Directors. The six month agreement included monthly payments of $15,000 and 60,000 stock options which vested in six equal monthly installments of 10,000 options per month. The options have an exercise price of $0.93 per share and will expire ten years from the date of grant. The consulting expense for the years ended June 30, 2014 and 2013 was $0 and $15,000, respectively, and is included in general and administrative.

Consulting Services by Fraunhofer Employee

From July 1, 2011 through February 29, 2012, the Company employed as our Chief Scientific Officer an executive of Fraunhofer Center for Molecular Biology (“Fraunhofer”). As of March 1, 2012, the Fraunhofer executive ceased to be an employee of the Company and became a consultant pursuant to an agreement with the Company, with the title and role of Chief Scientific Advisor to the Company. The agreement is extant but is terminable at will by either party and provides that during its term stock options previously granted when the executive was an employee will continue to vest. During this time, we have been a party to a number of agreements with Fraunhofer including:

More specifically, during the fiscal year ended June 30, 2012:

We remain a party to a number of agreements with Fraunhofer and in September 2013 entered into an agreement with Fraunhofer that materially modified certain of the terms of the Technology Transfer Agreement and patent expense sharing agreement and impacted both historical and future amounts due from us to Fraunhofer and from Fraunhofer to us.

Limitation of Liability of Officers and Directors and Indemnification

Our certificate of incorporation, as amended, provides for indemnification of our officers and directors to the extent permitted by Delaware law, which generally permits indemnification for actions taken by officers or directors as our representatives if the officer or director acted in good faith and in a manner he or she reasonably believed to be in the best interest of the corporation.

As permitted under Delaware law, the By-laws contain a provision indemnifying directors against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by them in connection with an action, suit or proceeding if they acted in good faith and in a manner they reasonably believed to be in or not opposed to the best interests of our Company, and, with respect to any criminal action or proceeding, had no reasonable cause to believe their conduct was unlawful.

Historical Relationship with Integrated BioPharma, Inc.

We were a subsidiary of Integrated BioPharma, Inc. (“Integrated BioPharma”) from February 21, 2003 until August 18, 2008. On that date, Integrated BioPharma spun off iBio in a transaction that was intended to be a tax free distribution to Integrated BioPharma and its U.S. stockholders. As part of that transaction, we entered into a number of agreements with Integrated BioPharma including an indemnification and insurance matters agreement and a tax responsibility allocation agreement. Messrs. E. Gerald Kay and Carl DeSantis, affiliates of Integrated BioPharma, were in 2008 and continue to remain beneficial holders of more than 5% of our common stock. The agreements are described below.

Indemnification. In general, under the indemnification and insurance matters agreement, we agreed to indemnify Integrated BioPharma, its affiliates and each of its and their respective directors, officers, employees, agents and representatives from all liabilities that arise from:

Integrated BioPharma agreed to indemnify us and our affiliates and our directors, officers, employees, agents and representatives from all liabilities that arise from:

Integrated BioPharma is not obligated to indemnify us against any liability for which we are also obligated to indemnify Integrated BioPharma. Recoveries by Integrated BioPharma under insurance policies will reduce the amount of indemnification due from us to Integrated BioPharma only if the recoveries are under insurance policies Integrated BioPharma maintains for our benefit. Recoveries by us will in all cases reduce the amount of any indemnification due from Integrated BioPharma to us.

Under the indemnification and insurance matters agreement, a party has the right to control the defense of third-party claims for which it is obligated to provide indemnification, except that Integrated BioPharma has the right to control the defense of any third-party claim or series of related third- party claims in which it is named as a party whether or not it is obligated to provide indemnification in connection with the claim and any third-party claim for which Integrated BioPharma and we may both be obligated to provide indemnification. We may not assume the control of the defense of any claim unless we acknowledge that if the claim is adversely determined, we will indemnify Integrated BioPharma in respect of all liabilities relating to that claim. The indemnification and insurance matters agreement does not apply to taxes covered by the tax responsibility allocation agreement.

Offset. Integrated BioPharma is permitted to reduce amounts it owes us under any of our agreements with Integrated BioPharma, by amounts we may owe to Integrated BioPharma under those agreements.

Assignment. We may not assign or transfer any part of the indemnification and insurance agreement without Integrated BioPharma’s prior written consent. Nothing contained in the agreement restricts the transfer of the agreement by Integrated BioPharma.

Tax Responsibility Allocation Agreement

Tax Responsibility Allocation Agreement. In order to allocate our responsibilities for taxes and certain other tax matters, we and Integrated BioPharma entered into a tax responsibility allocation agreement prior to the date of the distribution. Under the terms of the agreement, with respect to consolidated federal income taxes, and consolidated, combined and unitary state income taxes, Integrated BioPharma will be responsible for, and will indemnify and hold us harmless from, any liability for income taxes with respect to taxable periods or portions of periods ending prior to the date of distribution to the extent these amounts exceed the amounts we have paid to Integrated BioPharma prior to the distribution or in connection with the filing of relevant tax returns. Integrated BioPharma is also responsible for, and will indemnify and hold us harmless from, any liability for income taxes of Integrated BioPharma or any member of the Integrated BioPharma group (other than us) by reason of our being severally liable for those taxes under U.S. Treasury regulations or analogous state or local provisions. Under the terms of the agreement, with respect to consolidated federal income taxes, and consolidated, combined and unitary state income taxes, we are responsible for, and will indemnify and hold Integrated BioPharma harmless from, any liability for our income taxes for all taxable periods, whether before or after the distribution date. With respect to separate state income taxes, we are also responsible for, and will indemnify and hold Integrated BioPharma harmless from, any liability for income taxes with respect to taxable periods or portions of periods beginning on or after the distribution date. We are also responsible for, and will indemnify and hold Integrated BioPharma harmless from, any liability for our non-income taxes and our breach of any obligation or covenant under the terms of the tax responsibility allocation agreement, and in certain other circumstances as provided therein. In addition to the allocation of liability for our taxes, the terms of the agreement also provide for other tax matters, including tax refunds, returns and audits.

DESCRIPTION OF SECURITIES

Capital Stock

We are authorized to issue 175,000,000 shares of common stock, par value $0.001 per share, following an amendment to our Certificate of Incorporation approved by our stockholders on December 17, 2013, of which 67,460,267 shares were issued and outstanding as of October 1, 2014, and 1,000,000 shares of preferred stock, no par value, of which no shares were issued and outstanding as of October 1, 2014.

Provisions of our certificate of incorporation, bylaws and provisions of applicable Delaware law may discourage, delay or prevent a merger or other change in control that a stockholder may consider favorable. Pursuant to our certificate of incorporation, our Board of Directors may issue additional shares of common or preferred stock. Any additional issuance of common stock could have the effect of impeding or discouraging the acquisition of control of us by means of a merger, tender offer, proxy contest or otherwise, including a transaction in which our stockholders would receive a premium over the market price for their shares, and thereby protect the continuity of our management. Specifically, if in the due exercise of its fiduciary obligations, the Board of Directors were to determine that a takeover proposal was not in our best interest, shares could be issued by our Board of Directors without stockholder approval in one or more transactions that might prevent or render more difficult or costly the completion of the takeover by:

Our certificate of incorporation also allows our Board of Directors to fix the number of directors in the by-laws. Cumulative voting in the election of directors is specifically denied in our certificate of incorporation. The effect of these provisions may be to delay or prevent a tender offer or takeover attempt that a stockholder may determine to be in his, her or its best interest, including attempts that might result in a premium over the market price for the shares held by the stockholders.

We also are subject to Section 203 of the Delaware General Corporation Law. In general, these provisions prohibit a Delaware corporation from engaging in any business combination with any interested stockholder for a period of three years following the date that the stockholder became an interested stockholder, unless the transaction in which the person became an interested stockholder is approved in a manner presented in Section 203 of the Delaware General Corporation Law. Generally, a “business combination” is defined to include mergers, asset sales and other transactions resulting in financial benefit to a stockholder. In general, an “interested stockholder” is a person who, together with affiliates and associates, owns, or within three years did own, 15% or more of a corporation’s voting stock. This statute could prohibit or delay mergers or other takeover or change in control attempts and, accordingly, may discourage attempts to acquire us.

Common Stock

Holders of common stock are entitled to one vote per share on all matters to be voted upon by the stockholders and are not entitled to cumulative voting for the election of directors. Holders of common stock are entitled to receive ratably such dividends, if any, as may be declared from time to time by the Board of Directors out of funds legally available therefor subject to the rights of preferred stockholders. We do not intend to pay any cash dividends to the holders of common stock and anticipate reinvesting our earnings. In the event of liquidation, dissolution or winding up of our company, the holders of common stock are entitled to share ratably in all assets remaining after payment of liabilities and the preferences of preferred stockholders. Shares of common stock have no preemptive, conversion or other subscription rights. There are no redemption or sinking fund provisions applicable to common stock.

Preferred Stock

We are authorized to issue 1,000,000 shares of preferred stock, with no par value, and the Board of Directors is authorized to create one or more series of preferred stock, and to designate the rights, privileges, restrictions, preferences and limitations of any given series of preferred stock. Accordingly, the Board of Directors may, without stockholder approval, issue shares of preferred stock with dividend, liquidation, conversion, voting or other rights that could adversely affect the voting power or other rights of the holders of common stock.

DISCLOSURE OF COMMISSION POSITION ON INDEMNIFICATION FOR SECURITIES ACT LIABILITIES

Our Certificate of Incorporation will provide for indemnification of our officers and directors to the extent permitted by Delaware law, which generally permits indemnification for actions taken by officers or directors as our representatives if the officer or director acted in good faith and in a manner he or she reasonably believed to be in the best interest of the corporation.

As permitted under Delaware law, our By-laws contain a provision indemnifying directors against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by them in connection with an action, suit or proceeding if they acted in good faith and in a manner they reasonably believed to be in or not opposed to the best interests of our company, and, with respect to any criminal action or proceeding, had no reasonable cause to believe their conduct was unlawful.

The separation and distribution agreement that we have entered into with Integrated BioPharma provides for indemnification by us of Integrated BioPharma and its directors, officers and employees for some liabilities, including liabilities under the Securities Act and the Securities Exchange Act of 1934 in connection with the distribution, and a mutual indemnification of each other for product liability claims arising from their respective businesses, and also requires that we indemnify Integrated BioPharma for various liabilities of iBio, and for any tax that may be imposed with respect to the distribution and which result from our actions or omissions in that regard.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers or persons controlling us pursuant to the foregoing provisions, or otherwise, we have been advised that in the opinion of the Securities and Exchange Commission, such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable.

PLAN OF DISTRIBUTION

The common stock offered by this prospectus is being offered by Aspire Capital, the selling stockholder. The common stock may be sold or distributed from time to time by the selling stockholder directly to one or more purchasers or through brokers, dealers, or underwriters who may act solely as agents at market prices prevailing at the time of sale, at prices related to the prevailing market prices, at negotiated prices, or at fixed prices, which may be changed. The sale of the common stock offered by this prospectus may be effected in one or more of the following methods:

In order to comply with the securities laws of certain states, if applicable, the shares may be sold only through registered or licensed brokers or dealers. In addition, in certain states, the shares may not be sold unless they have been registered or qualified for sale in the state or an exemption from the registration or qualification requirement is available and complied with.

The selling stockholder may also sell shares of common stock under Rule 144 promulgated under the Securities Act, if available, rather than under this prospectus. In addition, the selling stockholder may transfer the shares of common stock by other means not described in this prospectus.

Brokers, dealers, underwriters, or agents participating in the distribution of the shares as agents may receive compensation in the form of commissions, discounts, or concessions from the selling stockholder and/or purchasers of the common stock for whom the broker-dealers may act as agent. Aspire Capital has informed us that each such broker-dealer will receive commissions from Aspire Capital which will not exceed customary brokerage commissions.

Aspire Capital is an “underwriter” within the meaning of the Securities Act.

Neither we nor Aspire Capital can presently estimate the amount of compensation that any agent will receive. We know of no existing arrangements between Aspire Capital, any other shareholder, broker, dealer, underwriter, or agent relating to the sale or distribution of the shares offered by this prospectus. At the time a particular offer of shares is made, a prospectus supplement, if required, will be distributed that will set forth the names of any agents, underwriters, or dealers and any compensation from the selling stockholder, and any other required information. Pursuant to a requirement of the Financial Industry Regulatory Authority, or FINRA, the maximum commission or discount and other compensation to be received by any FINRA member or independent broker-dealer shall not be greater than eight percent (8%) of the gross proceeds received by us for the sale of any securities being registered pursuant to Rule 415 under the Securities Act.

We will pay all of the expenses incident to the registration, offering, and sale of the shares to the public other than commissions or discounts of underwriters, broker-dealers, or agents. We have agreed to indemnify Aspire Capital and certain other persons against certain liabilities in connection with the offering of shares of common stock offered hereby, including liabilities arising under the Securities Act or, if such indemnity is unavailable, to contribute amounts required to be paid in respect of such liabilities. Aspire Capital has agreed to indemnify us against liabilities under the Securities Act that may arise from certain written information furnished to us by Aspire Capital specifically for use in this prospectus or, if such indemnity is unavailable, to contribute amounts required to be paid in respect of such liabilities.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to our directors, officers, and controlling persons, we have been advised that in the opinion of the SEC this indemnification is against public policy as expressed in the Securities Act and is therefore, unenforceable.

Aspire Capital and its affiliates have agreed not to engage in any direct or indirect short selling or hedging of our common stock during the term of the Purchase Agreement.

We have advised Aspire Capital that while it is engaged in a distribution of the shares included in this prospectus it is required to comply with Regulation M promulgated under the Securities Exchange Act of 1934, as amended. With certain exceptions, Regulation M precludes the selling stockholder, any affiliated purchasers, and any broker-dealer or other person who participates in the distribution from bidding for or purchasing, or attempting to induce any person to bid for or purchase any security which is the subject of the distribution until the entire distribution is complete. Regulation M also prohibits any bids or purchases made in order to stabilize the price of a security in connection with the distribution of that security. All of the foregoing may affect the marketability of the shares offered hereby this prospectus.

We may suspend the sale of shares by Aspire Capital pursuant to this prospectus for certain periods of time for certain reasons, including if the prospectus is required to be supplemented or amended to include additional material information.

This offering will terminate on the date that all shares offered by this prospectus have been sold by Aspire Capital.

LEGAL MATTERS

The legality of the securities offered hereby has been passed on for us by Andrew Abramowitz, PLLC, New York, New York.

EXPERTS

The consolidated financial statements of iBio, Inc. and subsidiaries as of June 30, 2014 and 2013, and for the years then ended, incorporated by reference in the registration statement, of which this prospectus is a part, have been audited by CohnReznick LLP, an independent registered public accounting firm, as set forth in their report, which includes an explanatory paragraph related to iBio Inc. and subsidiaries’ ability to continue as a going concern, in reliance upon such report given on the authority of such firm as experts in accounting and auditing.

WHERE YOU CAN FIND MORE INFORMATION

We have filed with the SEC a Registration Statement on Form S-1 under the Securities Act covering the sale of the securities offered by this prospectus. This prospectus, which is a part of the Registration Statement, does not contain all of the information in the Registration Statement and the exhibits filed with it, portions of which have been omitted as permitted by the SEC rules and regulations. For further information concerning us and the securities offered by this prospectus, please refer to the Registration Statement and to the exhibits filed therewith.

The Registration Statement, including all exhibits, and other materials that we filed with the SEC may be inspected without charge at the SEC’s Public Reference Room at the SEC’s principal office at Room 1580, 100 F Street, N.E., Washington, D.C. 20549. You may obtain information on the operation of this public reference room by calling 1-800-SEC-0330. The SEC maintains an Internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC and state the address of that site (http://www.sec.gov). The Registration Statement, including all exhibits and schedules and amendments, has been filed with the SEC through the Electronic Data Gathering Analysis and Retrieval system and is available to the public from the SEC’s web site at http://www.sec.gov.

INCORPORATION OF DOCUMENTS BY REFERENCE

The SEC allows us to “incorporate by reference” information from other documents that we file with it, 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 part of this prospectus. Information in this prospectus supersedes information incorporated by reference that we filed with the SEC prior to the date of this prospectus.

We incorporate by reference into this prospectus and the registration statement of which this prospectus is a part the information or documents listed below that we have filed with the SEC (Commission File No. 011-35023).

Any statement contained in a document incorporated or deemed to be incorporated by reference in this prospectus will be deemed modified, superseded or replaced for purposes of this prospectus to the extent that a statement contained in this prospectus modifies, supersedes or replaces such statement.

You may request, orally or in writing, a copy of any or all of the documents incorporated herein by reference. These documents will be provided to you at no cost, by contacting: iBio, Inc., Attention: Elizabeth Moyle 9 Innovation Way, Suite 100, Newark, Delaware 19711, Telephone: (302) 355-2396, E-mail bmoyle@ibioinc.com. In addition, copies of any or all of the documents incorporated herein by reference may be accessed at our website http://www.ibioinc.com.

PROSPECTUS

IBIO, INC.

23,418,172 Shares of Common Stock

October 20, 2014