- Prospectus filed pursuant to Rule 424(b)(5) (424B5)

Filed pursuant to Rule 424(b)(5)

Registration No.: 333-174213

PROSPECTUS

$15,000,000

Common Stock

Warrants

Units

We may issue and sell from time to time our common stock, warrants to purchase common stock (“warrants”) and/or units consisting of common stock and warrants on terms to be determined at the time of sale. We may offer these securities separately or together in one or more offerings with a maximum aggregate offering price of $15 million.

We will provide a prospectus supplement each time we issue securities, specifying the specific terms of the securities being sold as well as the specific terms of that offering.

You should read this prospectus and any prospectus supplement, including any information incorporated herein and therein, carefully before you invest.

The securities being sold may be sold on a delayed or continuous basis directly by us, through dealers, agents or underwriters designated from time to time, or through any combination of these methods. If any dealers, agents or underwriters are involved in the sale of the securities in respect of which this prospectus is being delivered, we will disclose their names and the nature of our arrangements with them in any prospectus supplement. The net proceeds we expect to receive from any such sale will also be included in the applicable prospectus supplement.

Our Articles of Incorporation, as amended, were amended effective 12:01 a.m. on July 29, 2011 to reflect a reverse stock split of our common stock. Pursuant to the reverse stock split, at the effective time, each five (5) shares of common stock issued and outstanding were combined into one (1) validly issued, fully paid and non assessable share of common stock. No fractional shares were issued, each fraction that resulted from the reverse stock split was rounded up to the nearest whole share.

Our common stock is traded on the Nasdaq Capital Market under the symbol “APPY.” D ue to the reverse stock split, from July 29, 2011 until August 26, 2011, our stock will trade under the symbol “APPYD.” On July 28, 2011, the closing price of our common stock as reported on the Nasdaq Capital Market was $3.30 per share, which has been adjusted to reflect the reverse stock split. None of the other securities offered under this prospectus are publicly traded.

Investing in our securities involves a high degree of risk. See “RISK FACTORS” beginning on page 3.

This prospectus may not be used to offer or sell securities unless accompanied by a prospectus supplement for the securities being sold.

Neither the Securities and Exchange Commission nor any other regulatory body 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 July 29, 2011.

TABLE OF CONTENTS

ASPENBIO PHARMA, INC.	3
RISK FACTORS	3
ABOUT THIS PROSPECTUS	3
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS	4
USE OF PROCEEDS	4
PLAN OF DISTRIBUTION	5
DESCRIPTION OF OUR CAPITAL STOCK	7
DESCRIPTION OF OUR WARRANTS	7
DESCRIPTION OF OUR UNITS	10
LEGAL MATTERS	10
EXPERTS	10
INCORPORATION BY REFERENCE	11
WHERE YOU CAN FIND MORE INFORMATION	11

You should rely only on the information contained in this prospectus and in any prospectus supplement (including in any documents incorporated by reference herein or therein). We have not authorized anyone to provide you with any different information. We are offering to sell our securities, and seeking offers to buy, only in jurisdictions where offers and sales are permitted. The information contained in this prospectus and any prospectus supplement is accurate only as of the date of this prospectus or such prospectus supplement, and the information contained in any document incorporated herein or therein by reference is accurate only as of the date of such document incorporated by reference, regardless of the time of delivery or any sale of our securities.

ASPENBIO PHARMA, INC.

AspenBio Pharma, Inc. (the “Company” or “AspenBio” also “we”, “us” or “our”) is developing products that address unmet human diagnostic and animal health therapeutic needs.

AspenBio is focused on its unique blood-based test, AppyScore ™ , a product being developed to assist emergency department physicians in managing acute appendicitis. According to CDC data in the United States alone, over seven million people enter emergency departments annually complaining of abdominal pain. Diagnosis of the cause of the abdominal pain can be challenging and urgent, particularly because of the risk of negative implications to a patient’s health and the cost if the acute appendicitis is not timely diagnosed. We anticipate that AppyScore will provide physicians with incremental objective clinical information, through the test’s negative predictive value and sensitivity, to assist in the management of the large number of patients who enter hospital emergency departments suspected of, but at low risk of having acute appendicitis.

Assuming regulatory clearance, we expect AppyScore will be used to aid emergency department physicians in the management of this large segment of their patient population, those presenting with abdominal pain. Potentially the use of AppyScore in low risk patients could also reduce health care costs and avoid exposing such patients to unnecessary radiation from CT imaging. Children are most susceptible to the long term health risks associated with radiation exposure from CT imaging. Our current focus is to validate the use of AppyScore in the management of children and adolescents presenting to emergency departments with signs, symptoms and history suggestive of, or suspicious for acute appendicitis, but who are believed to be at low risk of having the disease.

Additionally, we have several novel reproduction drugs in development for use in animals, including livestock, of economic importance.

We are a Colorado corporation located at 1585 S. Perry Street, Castle Rock, Colorado 80104. Our phone number is (303) 794-2000. We maintain a website at http://www.aspenbiopharma.com . The information contained in, or that can be accessed through, the website is not part of this prospectus.

RISK FACTORS

Investing in our securities involves a high degree of risk. You should consider carefully the risks incorporated by reference herein that are described under “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2010, as well as any applicable prospectus supplement and the reports we file from time to time with the SEC that are incorporated by reference in this prospectus. If any of the events described in such “Risk Factors” section occurs or the risks described in such “Risk Factors” section actually materialize, our business, financial condition, results of operations, cash flow or prospects could be materially adversely affected.

ABOUT THIS PROSPECTUS

This prospectus is part of a “shelf” registration statement that we filed with the Securities and Exchange Commission (the “SEC”). By using a shelf registration statement, we may, from time to time, issue and sell in one or more series or classes our common stock, warrants and/or units consisting of our common stock and warrants in one or more offerings up to an aggregate maximum offering price of $15 million (or its equivalent in foreign or composite currencies). Each time we sell any of our securities, we will provide a prospectus supplement that will contain more specific information about the offering and the terms of the securities being sold. We may also add, update or change in the prospectus supplement any of the information contained in this prospectus or the documents incorporated by reference.

This prospectus provides you with a general description of the Company and our securities; for further information about our business and our securities, you should refer to the registration statement, the reports incorporated by reference in this prospectus, as described in “Where You Can Find More Information.”

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are not guarantees of the future as there are a number of meaningful factors that could cause AspenBio’s actual results to vary materially from those indicated by such forward-looking statements. These statements are based on certain assumptions made based on experience, expected future developments and other factors AspenBio believes are appropriate in the circumstances. Meaningful factors, which could cause actual results to differ from expectations, many of which are beyond the control of AspenBio, include, but are not limited to: actual trial results; our ability to successfully complete the clinical trial data assessments required for FDA submission, obtain FDA approval for, cost effectively manufacture and generate revenues from, the appendicitis test in development, as well as the animal health products and other new products developed by AspenBio; our ability to retain the scientific management team to advance the products in development; our ability to execute agreements to provide AspenBio with rights to meet its objectives; our ability to overcome adverse changes in market conditions and the regulatory environment; our ability to obtain and enforce intellectual property rights; our ability to our ability to obtain adequate financing in the future through product licensing, co-promotional arrangements, public or private equity or debt financing or otherwise; general business conditions; competition; business abilities and judgment of personnel; availability of qualified personnel; and other factors referenced herein in “Risk Factors.” AspenBio does not intend (and is not obligated) to update publicly any such forward-looking statements. For other factors that may impact such forward-looking statements, reference is made to our annual and quarterly reports filed with the Securities and Exchange Commission.

USE OF PROCEEDS

Unless otherwise indicated in the applicable prospectus supplement, we intend to use the net proceeds from the sale of the securities under this prospectus for product development, clinical trial activities, FDA 510(k) submission-related activities, general corporate purposes, including payment of expenses and liabilities, and working capital. At this time, we have not determined the specific uses of any offering proceeds, or the amounts we plan to spend on any particular use or the timing of such expenditures, which may vary significantly depending on various factors such as our research and development results, regulatory approvals, competition, marketing and sales, and the market acceptance of any products introduced by us or our partners. Pending application of the net proceeds from any particular offering, we intend to invest such proceeds in short-term, interest-bearing, investment-grade securities.

Each time we issue securities, we will provide a prospectus supplement that will contain information about how we intend to use the proceeds from each such offering.

We cannot guarantee that we will receive any proceeds in connection with any offering hereunder because we may choose not to issue any of the securities covered by this prospectus.

PLAN OF DISTRIBUTION

We may sell the securities being offered hereby from time to time in one or more of the following ways:

·	through one or more underwriters;

·	through dealers, who may act as agents or principal (including a block trade in which a broker or dealer so engaged will attempt to sell the shares as agent but may position and resell a portion of the block as principal to facilitate the transaction);

·	directly to one or more purchasers;

·	through agents;

·	through registered direct offerings;

·	as part of a collaboration with a third party;

·	in privately negotiated transactions; and

·	in any combination of these methods of sale.

We will set forth in a prospectus supplement the terms of the offering of securities, including:

·	the name or names of any agents, underwriters or dealers;

·	the terms of the securities being offered, including the purchase price and the proceeds we will receive from the sale;

·	any underwriting discounts and commissions or agency fees and other items constituting underwriters’ or agents’ compensation;

·	any over-allotment options under which underwriters may purchase additional securities from us; and

·	any discounts or concessions allowed or reallowed or paid to dealers.

The distribution of the securities may be effected from time to time in one or more transactions at a fixed price or prices, which may be changed, at market prices prevailing at the time of sale, at prices related to the prevailing market prices, or at negotiated prices.

Underwriters, dealers, agents and others that participate in the distribution of the securities may be underwriters as defined in the Securities Act of 1933, as amended (the “Securities Act”) and any discounts or commissions they receive from us and any profit on their resale of the securities may be treated as underwriting discounts and commissions under the Securities Act. In no event will the total amount of cash compensation paid to underwriters, placement agents, dealers or brokers exceed 10% of the gross proceeds of the offering. We will identify in the applicable prospectus supplement any underwriters, dealers, agents and others and will describe their compensation. We may have agreements with underwriters, dealers, agents and others to indemnify them against specified civil liabilities, including liabilities under the Securities Act. Underwriters, dealers, agents and others may engage in transactions with or perform services for us in the ordinary course of their businesses.

If required under applicable state securities laws, we will sell the securities only through registered or licensed brokers or dealers. In addition, in some states, we may not sell securities unless they have been registered or qualified for sale in the applicable state or unless we have complied with an exemption from any registration or qualification requirements.

Agents

We may designate agents who agree to solicit purchases for the period of their appointment or to sell securities on a continuing basis. Unless the prospectus supplement provides otherwise, agents will act on a best efforts basis for the period of their appointment. Agents may receive compensation in the form of commissions, discounts or concessions from us. Agents may also receive compensation from the purchasers of the securities for whom they sell as principals. Each particular agent will receive compensation in amounts negotiated in connection with the sale, which might be in excess of customary commissions.

Underwriters

If we use underwriters for a sale of securities, the underwriters will acquire the securities for their own account. The underwriters may resell the securities in one or more transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. The obligations of the underwriters to purchase the securities will be subject to the conditions set forth in the applicable underwriting agreement. Unless the prospectus supplement provides otherwise, underwriters will be obligated to purchase all of the securities offered by the prospectus supplement. We may change from time to time any initial public offering price and any discounts or concessions the underwriters allow or reallow or pay to dealers. We may use underwriters with whom we have a material relationship, and we may offer the securities to the public through an underwriting syndicate or through a single underwriter. We will describe in the prospectus supplement naming the underwriter the nature of any such relationship and underwriting arrangement.

Dealers

We also may sell securities to a dealer as principal. If we sell our securities to a dealer as a principal, then the dealer may resell those securities to the public at varying prices to be determined by such dealer at the time of resale. The name of the dealer and the terms of the transactions will be set forth in the applicable prospectus supplement.

Direct Sales and Institutional Purchases

We may also sell securities directly to one or more purchasers, in which case underwriters or agents would not be involved in the transaction.

Further, we may authorize agents, underwriters or dealers to solicit offers by certain types of institutional investors to purchase securities from us at the public offering price set forth in the prospectus supplement pursuant to delayed delivery contracts providing for payment and delivery on a specified date in the future. We will describe the conditions to these contracts and the commissions we must pay for solicitation of these contracts in an applicable prospectus supplement.

Stabilization Activities

Any underwriter may engage in overallotment, stabilizing transactions, short covering transactions and penalty bids in accordance with Regulation M under the Exchange Act of 1934, as amended (the “Exchange Act”). Overallotment involves sales in excess of the offering size, which create a short position. Stabilizing transactions permit bids to purchase the underlying security so long as the stabilizing bids do not exceed a specified maximum. Short covering transactions involve purchases in the open market after the distribution is completed to cover short positions. Penalty bids permit the underwriters to reclaim a selling concession from a dealer when the securities originally sold by the dealer are purchased in a covering transaction to cover short positions. Such activities may cause the price of the securities to be higher than they would otherwise be. If commenced, the underwriters may discontinue any of the activities at any time. These transactions may be effected on the Nasdaq Capital Market or otherwise.

Passive Market Making

Any underwriters who are qualified market makers on the Nasdaq Capital Market may engage in passive market making transactions on the Nasdaq Capital Market in accordance with Rule 103 of Regulation M, during the business day prior to the pricing of the offering, before the commencement of offers or sales. Passive market makers must comply with applicable volume and price limitations and must be identified as passive market makers. In general, a passive market maker must display its bid at a price not in excess of the highest independent bid for such security; if all independent bids are lowered below the passive market maker’s bid, however, the passive market maker’s bid must then be lowered when certain purchase limits are exceeded.

Costs

We will bear all costs, expenses and fees in connection with the registration of the securities, as well as the expense of all commissions and discounts, if any, attributable to sales of the securities by us.

DESCRIPTION OF OUR CAPITAL STOCK

Set forth below is a summary of the material terms of our capital stock. This summary is not complete. We encourage you to read our Articles of Incorporation, as amended (the “Articles of Incorporation”) and our Amended and Restated Bylaws (the “Bylaws”) that we have previously filed with the SEC. See “Where You Can Find More Information.”

General

Our authorized capital stock consists of 30,000,000 shares of common stock, no par value, of which 40,138,324 shares were outstanding as of July 28, 2011 (estimated at 8,027,665 to reflect the reverse stock split effective on July 29, 2011).

Common Stock

Holders of common stock are entitled to one vote for each share held on all matters submitted to a vote of shareholders, except that in the election of directors each shareholder shall have as many votes for each shares held by him, her or it as there are directors to be elected and for whose election the shareholder has a right to vote. Cumulative voting is not permitted. Generally, all matters to be voted on by shareholders must be approved by a majority, or, in the case of the election of directors, by a plurality, of the votes cast at a meeting at which a quorum is present.

Holders of outstanding shares of our common stock are entitled to those dividends declared by the Board of Directors out of legally available funds, and, in the event of our liquidation, dissolution or winding up of our affairs, holders are entitled to receive ratably our net assets available to the shareholders. Holders of our outstanding common stock have no preemptive, conversion or redemption rights. All of the issued and outstanding shares of our common stock are, and all unissued shares of our common stock, when offered and sold will be, duly authorized, validly issued, fully paid and nonassessable. To the extent that additional shares of our common stock may be issued in the future, the relative interests of the then existing shareholders may be diluted.

Our common stock is traded on the Nasdaq Capital Market under the symbol APPY. D ue to the reverse stock split, from July 29, 2011 until August 26, 2011, our stock will trade under the symbol “APPYD.” On July 28, 2011, the closing price of our common stock as reported on the Nasdaq Capital Market was $3.30 per share, which has been adjusted to reflect the reverse stock split.

Our registrar and transfer agent for all shares of common stock is Corporate Stock Transfer, Inc.

DESCRIPTION OF OUR WARRANTS

This description summarizes only the terms of any warrants that we may offer under this prospectus and related warrant agreements and certificates. You should refer to the warrant agreement, including the form of warrant certificate representing the warrants, relating to the specific warrants being offered for complete terms, which will be described and included in an accompanying prospectus supplement. Such warrant agreement, together with the warrant certificate, will be filed with the SEC in connection with the offering of the specific warrants.

We may issue warrants for the purchase of common stock. Warrants may be issued independently or together with common stock, and may be attached to or separate from any offered securities.

We will evidence each series of warrants by warrant certificates that we will issue under a separate warrant agreement. We may enter into the warrant agreement with a warrant agent and, if so, we will indicate the name and address of the warrant agent in the applicable prospectus supplement relating to the particular series of warrants.

The particular terms of any issue of warrants will be described in the prospectus supplement relating to the series. Those terms may include:

·	the title of such warrants;

·	the aggregate number of such warrants;

·	the price or prices at which such warrants will be issued;

·	the currency or currencies (including composite currencies) in which the price of such warrants may be payable;

·	the terms of the securities issuable upon exercise of such warrants and the procedures and conditions relating to the exercise of such warrants;

·	the price at which the securities issuable upon exercise of such warrants may be acquired;

·	the dates on which the right to exercise such warrants will commence and expire;

·	any provisions for adjustment of the number or amount of securities receivable upon exercise of the warrants or the exercise price of the warrants;

·	if applicable, the minimum or maximum amount of such warrants that may be exercised at any one time;

·	if applicable, the designation and terms of the securities with which such warrants are issued and the number of such warrants issued with each such security or principal amount of such security;

·	if applicable, the date on and after which such warrants and the related securities will be separately transferable;

·	information with respect to book-entry procedures, if any; and

·	any other terms of such warrants, including terms, procedures and limitations relating to the exchange or exercise of such warrants.

As of June 30, 2011, the Company had outstanding warrants exercisable for 510,000 shares of common stock at an average exercise price of $1.75 per share that expire on a weighted average of approximately five years after the date hereof. This has not been adjusted to reflect the reverse stock split.

Exercise of Warrants

Each warrant will entitle its holder to purchase the number of shares of common stock at the exercise price set forth in, or calculable as set forth in, the applicable prospectus supplement. Unless we otherwise specify in the applicable prospectus supplement, holders of the warrants may exercise the warrants at any time up to the expiration date set forth in the applicable prospectus supplement. After the close of business on the expiration date, unexercised warrants will become void. We will specify the place or places where, and the manner in which, warrants may be exercised in the applicable prospectus supplement. We will set forth on the reverse side of the applicable certificate and in the applicable prospectus supplement the information that the holder of the warrant will be required to deliver upon exercise.

Upon receipt of payment and the warrant certificate properly completed and duly executed, we will, as soon as practicable, forward the purchased securities. If less than all of the warrants represented by the warrant certificate are exercised, a new warrant certificate will be issued for the remaining warrants.

Enforceability of Rights by Holders of Warrants

Each warrant agent will act solely as our agent under the applicable warrant agreement and will not assume any obligation or relationship of agency or trust with any holder of any warrant. A single bank or trust company may act as warrant agent for more than one issue of warrants. A warrant agent will have no duty or responsibility in case of any default by us under the applicable warrant agreement or warrant, including any duty or responsibility to initiate any proceedings at law or otherwise, or to make any demand upon us. Any holder of a warrant may, without the consent of the related warrant agent or the holder of any other warrant, enforce by appropriate legal action its right to exercise, and receive the securities purchasable upon exercise of, such holder’s warrants.

Prior to the exercise of any warrants to purchase common stock, holders of the warrants will not have any of the rights of holders of the common stock purchasable upon exercise, including the right to vote or to receive any payments of dividends.

DESCRIPTION OF OUR UNITS

We may issue units comprised of common stock and warrants. Each unit will be issued so that the holder of the unit is also the holder of each security included in the unit. Thus, the holder of a unit will have the rights and obligations of a holder of each included security. The units may be issued under unit agreements to be entered into between us and a bank or trust company, as unit agent, as detailed in the prospectus supplement relating to units being offered. The prospectus supplement will describe:

·	the designation and terms of the units and of the securities comprising the units, including whether and under what circumstances the securities comprising the units may be held or transferred separately;

·	a description of the terms of any unit agreement governing the units;

·	a description of the provisions for the payment, settlement, transfer or exchange of the units;

·	a discussion of material federal income tax considerations, if applicable; and

·	whether the units will be issued in fully registered or global form.

The descriptions of the units in this prospectus and in any prospectus supplement are summaries of the material provisions of the applicable agreements. These descriptions do not restate those agreements in their entirety and may not contain all the information that you may find useful. We urge you to read the applicable agreements because they, and not the summaries, define your rights as holders of the units. For more information, please review the form of the relevant agreements, which will be filed with the SEC promptly after the offering of units and will be available as described under the heading “Where You Can Find More Information.”

LEGAL MATTERS

Certain legal matters with respect to the securities offered hereby have been passed upon by Ballard Spahr LLP.

EXPERTS

The financial statements of AspenBio Pharma, Inc., as of December 31, 2010 and 2009, and for each of the years in the three-year period then ended, incorporated herein by reference have been audited by the accounting firm of GHP Horwath, P.C., an independent registered public accounting firm, and are incorporated in reliance upon their report dated April 14, 2011, given upon such firm’s authority as experts in auditing and accounting.

INCORPORATION BY REFERENCE

The SEC allows us to “incorporate by reference” in this prospectus the information in other documents that we file with it, which means that we can disclose important information to you by referring you to those documents containing such information. This prospectus is part of a registration statement we filed with the SEC. You should rely on the information incorporated by reference in this prospectus and the registration statement. The information incorporated by reference is considered to be part of this prospectus and information we file later with the SEC will automatically update and supersede this information and information contained in documents filed earlier with the SEC. We incorporate by reference the documents listed below and any future filings made with the SEC under Section 13(a), 13(c), 14 or 15(d) of the Exchange Act prior to the termination of the offering; provided , that we are not incorporating by reference any documents or information deemed to have been furnished and not filed in accordance with SEC rules. The documents we are incorporating by reference are:

·	our Annual Report on Form 10-K for the year ended December 31, 2010, filed on April 15, 2011;

·	our Annual Report on Form 10-K/A for the year ended December 31, 2010, filed on May 2, 2011;

·	our Quarterly Report on Form 10-Q for the three months ended March 31, 2011, filed on May 13, 2011;

·	our Current Reports on Form 8-K filed on January 5, 2011, February 24, 2011, April 15, 2011 (Item 8.01 only), July 13, 2011, July 19, 2011, July 21, 2011 and July 29, 2011; and

·	our Registration Statement on Form 8-A filed October 1, 2002 registering our common stock under the Securities Act of 1934, as amended by Form 8-A filed on August 27, 2007 and as amended by Form 8-A / Amendment 1 on August 27, 2007.

We will furnish to you, on written or oral request, a copy of any or all of the documents that have been incorporated by reference, including exhibits to these documents. You may request a copy of these filings at no cost by writing or telephoning our Secretary at the following address and telephone number:

AspenBio Pharma, Inc.

Attention: Jeffrey G. McGonegal, Chief Financial Officer and Secretary

1585 S. Perry Street

Castle Rock, Colorado 80104

Telephone No.: (303) 794-2000

Facsimile No.: (303) 798-8332

WHERE YOU CAN FIND MORE INFORMATION

We are a public company and file annual, quarterly and special reports, proxy statements and other information with the SEC. You may read and copy any document we file at the SEC’s public reference room at 100 F Street, NE, Washington, D.C. 20549. You can request copies of these documents by writing to the SEC and paying a fee for the copying cost. Please call the SEC at 1-800-SEC-0330 for more information about the operation of the public reference room. Our SEC filings are also available to the public at the SEC’s website at http://www.sec.gov . Our website address is http://www.aspenbiopharma.com . However, information on our website will not be considered a part of this prospectus.