As filed with the Securities and Exchange Commission on September 27, 2004.August 29, 2005.

Registration No. 333-115434333-                

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

AMENDMENT NO. 4

To

FORM S-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

HURON CONSULTING GROUP INC.

(Exact name of registrant as specified in its charter)

550 West Van Buren Street

Chicago, Illinois 60607

(312) 583-8700

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Gary E. HoldrenNatalia Delgado

Chief Executive OfficerGeneral Counsel and PresidentCorporate Secretary

Huron Consulting Group Inc.

550 West Van Buren Street

Chicago, Illinois 60607

(312) 583-8700

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies To:

APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:  As soon as practicable after the effective date of this Registration Statement.

If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box.  ¨

If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement number for the same offering.  ¨

If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If this form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If delivery of the prospectus is expected to be made pursuant to Rule 434, check the following box.  ¨

CALCULATION OF REGISTRATION FEE

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

The information in this preliminary prospectus is not complete and may be changed. Neither we nor theThe selling stockholderstockholders may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell these securities and neither we nor the selling stockholderstockholders are not soliciting offers to buy these securities in any jurisdiction where the offer or sale is not permitted.

5,000,0004,000,000 Shares

Common Stock

This isAll of the initial public offering of shares of our common stock of Huron Consulting Group Inc. Prior to thisin the offering there has been no public market for our common stock. We are offering 3,333,333 shares of common stock andbeing sold by the selling stockholderstockholders identified in this prospectus is offering 1,666,667 shares of common stock.prospectus. We will not receive any proceeds from the sale of any shares by the selling stockholder. The initial public offering price of our common stock is expected to be between $14.00 and $16.00 per share.in this offering.

We have applied for the quotation of ourOur common stock is quoted on the NASDAQ National Market under the symbol “HURN.” The last reported sale price of our common stock on August 26, 2005 was $24.59 per share.

Investing in our common stock involves a high degree of risk. Before buying any shares, you should carefully read the discussion of material risks of investing in our common stock in “Risk factors” beginning on page 1311 of this prospectus.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The underwriters may also purchase up to an additional 750,000600,000 shares of common stock from HCG Holdings LLC, one of the selling stockholderstockholders, at the public offering price, less underwriting discounts and commissions, within 30 days from the date of this prospectus to cover over-allotments, if any. If the underwriters exercise this option in full, the total underwriting discounts and commissions will be $              and total proceeds, before expenses, to the selling stockholderstockholders will be $            .

The underwriters are offering the common stock as set forth under “Underwriting.” Delivery of the shares of common stock will be made on or about                     , 2004.2005.

Joint Book-Running Managers

William BlairRobert W. Baird & CompanyCo.

You should only rely on the information contained in this prospectus. Neither we, the selling stockholderstockholders nor the underwriters have authorized anyone to provide you with information different from that contained in this prospectus. We and theThe selling stockholderstockholders are offering to sell, and seeking offers to buy, shares of common stock only in jurisdictions where offers and sales are permitted. The information contained in this prospectus is current only as of the date of this prospectus.prospectus, regardless of the time of delivery of this prospectus or any sale of our common stock.

TABLE OF CONTENTS

Through and including                     , 2004 (the 25th day after commencement of this offering), federal securities law may require all dealers effecting transactions in our common stock, whether or not participating in this offering, to deliver a prospectus. This delivery requirement is in addition to the obligation of dealers to deliver a prospectus when acting as underwriters and with respect to their unsold allotments or subscriptions.

Huron Consulting Group Inc., Huron Consulting Group, our logo and certain other names of our services are our trademarks, trade names or service marks. Each trademark, trade name or service mark of any other company appearing in this prospectus belongs to its holder.

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Prospectus summary

The following is a summary of some of the information contained in this prospectus. In addition to this summary, we urge you to read the entire prospectus carefully, especially the risks of investing in our common stock discussed under “Risk factors” and the consolidated financial statements and notes to those financial statements included elsewhere in this prospectus. In this prospectus, unless the context otherwise requires, the terms “Huron,” “company,” “we,” “us” and “our” refer to Huron Consulting Group Inc. and its subsidiaries.

OUR BUSINESS

We are an independent provider of financial and operational consulting services. Our highly experienced and credentialed professionals employ their expertise in accounting, finance, economics and operations to provide our clients with specialized analysis and customized advice and solutions that are tailored to address each client’s particular challenges and opportunities.

We provide our services through two segments: Financial Consulting and Operational Consulting. Our Financial Consulting segment helpsprovides services that help clients effectively address complex challenges that arise from litigation, disputes, investigations, regulation, financial distress and other sources of significant conflict or change. Our services in this segment include financial and economic analysis; forensic accounting; expert support and testimony services; restructuring, turnaround and bankruptcy advisory services; valuation analysis; and valuation analysis.interim management, organizational renewal and turnaround services and other crisis management services. Our Operational Consulting segment helpsprovides services that help clients improve the overall efficiency and effectiveness of their operations, reduce costs, manage regulatory compliance and maximize procurement efficiency. For the year ended December 31, 20032004 and the six months ended June 30, 2004,2005, we derived 68.9%57.9% and 62.3%56.0%, respectively, of our revenues from Financial Consulting and 31.1%42.1% and 37.7%44.0%, respectively, of our revenues from Operational Consulting.

We believe many organizations are facing increasingly large and complex business disputes and lawsuits, a growing number of regulatory and internal investigations and more intense public scrutiny. Concurrently, we believe increased competition and regulation are presenting significant operational and financial challenges for organizations. Distressed companies are responding to these challenges by restructuring and reorganizing their businesses and capital structures, while financially healthy organizations are striving to take advantage of business opportunities by improving operations, reducing costs and maximizing revenue. Many organizations have limited dedicated resources to respond effectively to these challenges and opportunities. Consequently, we believe these organizations will increasingly seek to augment their internal resources with experienced independent consultants like us.

We provide our services to a wide variety of both financially sound and distressed organizations, including Fortune 500 companies, medium-sized and large businesses, leading academic institutions, healthcare organizations and the law firms that represent these various organizations. Since commencing operations in May 2002, we have conducted over 1,0001,500 engagements for over 5001,000 clients, and we have worked on engagements with 3537 of the 40 largest U.S. law firms listed inThe American Lawyer 20042005 Am Law 100.

As of September 17, 2004,June 30, 2005, we had 604692 employees, including 486557 billable professionals, whom we refer to as consultants. In addition to our headquarters in Chicago, we have five other core offices located in Boston, Houston, New York City, San Francisco and Washington, D.C. and two smaller offices located in Charlotte and Los Angeles.

OUR HISTORY

Huron was formed in March 2002 and commenced operations in May 2002. We were founded by a core group of experienced financial and operational consultants that consisted primarily of former Arthur

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Andersen LLP partners and professionals, including our chief executive officer,Chief Executive Officer, Gary E. Holdren, with

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equity sponsorship from a group of investors led by Lake Capital Management LLC. For purposes of holding their investment in us, these investors formed our parent, HCG Holdings LLC, a Delaware limited liability company. HCG Holdings LLC, which is one of the selling stockholderstockholders in this offering, currently owns approximately 93%50.1% of our outstanding common stock. After giving effect to this offering (without giving effect to the underwriters’ over-allotment option) and the issuance of 769,700 shares of restricted common stock to our executive officers and certain of our employees on the date of this prospectus,, HCG Holdings LLC will own approximately        59%% of our outstanding common stock. As a result, HCG Holdings LLC will continue to have the power to controlsignificantly influence the outcome of all matters submitted to our stockholders for approval after the consummation of this offering. After giving effect to this offering (without giving effect to the underwriters’ over-allotment option), the issuance of 769,700 shares of restricted common stock to our executive officers and certain of our employees on the date of this prospectus and the grant to each of our four independent directors of options exercisable for 13,333 shares of common stock, assuming a public offering price of $15.00 per share, the mid-point of the range shown on the cover of this prospectus, our executive officers, board members and director nominees will collectively own approximately 6% of our outstanding common stock, assuming all outstanding options that will be vested at the time of consummation of this offering, including the options held by these persons, were exercised and that the exercise price was paid in cash. See “Prospectus summary—Background and certain transactions,HCG Holdings LLC,” “Certain relationships and related transactions” and “Principal and selling stockholders” for further information.

We created Huron because we believed that a financial and operational consulting business that is unaffiliated with a public accounting firm is better suited to serve its clients’ needs. As an independent consulting firm, Huron is not subject to the legal restrictions placed on public accounting firms that prohibit them from providing certain non-audit services to their audit clients. We also believedbelieve that many other consulting firms providedprovide only a limited scope of services and, therefore, a company such as ours with a wide array of services would be better positioned to serve the diverse and complex needs of various organizations.

In response to strong demand for our services, we began aggressively hiring consultants in the first quarter of 2003 and added over 200 new consultants during 2003. While this aggressive hiring negatively impacted our utilization rates (determined by dividing the number of hours all of our consultants worked on client assignments during a period by the total available working hours for all of our consultants during the same period, assuming a forty-hour work week, less paid holidays and vacation days) as we integrated our new hires, we believe the early results of this growth initiative are evident in our recent financial results. Revenues in 2002 totaled $35.1 million for our first eight months of operations and rose to $101.5 million in 2003, our first full year of operations. Revenues totaled $81.6 million in the six months ended June 30, 2004 compared to $46.9 million in the six months ended June 30, 2003, representing 74.0% year-over-year growth. We incurred a net loss of $4.2 million for the partial year ended December 31, 2002 and a net loss of $1.1 million for the year ended December 31, 2003 and generated net income of $7.2 million for the six months ended June 30, 2004 compared to $1.9 million for the six months ended June 30, 2003. At June 30,October 2004, we hadcompleted our initial public offering and our common stock began trading on the NASDAQ National Market.

In May 2005, we acquired Speltz & Weis LLC, a total stockholders’ deficitspecialized consulting firm consisting of $0.2 million.26 consultants, so that our Financial Consulting segment can provide interim management, organizational renewal and turnaround services and other crisis management services to distressed hospitals and other healthcare facilities.

OUR COMPETITIVE STRENGTHS

We believe our key competitive strengths include:

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OUR GROWTH STRATEGY

We have grown significantly since we commenced operations, more than doubling the number of our consultants from 213 on May 31, 2002 to 486557 on September 17, 2004.June 30, 2005. We believe there are a number of opportunities to continue to grow our business, including:

RISKS RELATING TO OUR BUSINESS AND GROWTH STRATEGY

While we believe focusing on the key areas set forth above will provide us with opportunities to reach our goals, there are a number of risks and uncertainties that may limit our ability to achieve our goals, including that:

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For more information about these and other risks related to our business and an investment in our common stock, see “Risk factors” beginning on page 13.11. You should consider carefully all of these risks before making an investment in our common stock.

BACKGROUND AND CERTAIN TRANSACTIONSHCG HOLDINGS LLC

HCG Holdings LLC

HCG Holdings LLC, our parent andone of the selling stockholder,stockholders in this offering, currently owns approximately 50.1% of our outstanding common stock. After giving effect to this offering (without giving effect to the underwriters’ over-allotment option), HCG Holdings LLC will own approximately        % of our outstanding common stock. HCG Holdings LLC is controlled by Lake Capital Partners LP and Lake Capital Management LLC. The remaining equity interests in HCG Holdings LLC are held by certain other institutional investors, some of our executive officers and 24 of our other managing directors, eachthree of our board members a director nominee and 31 other holders. Our executive officers and board members and the director nominee holding interests in HCG Holdings LLC are Gary Holdren, our Chief Executive Officer and a board member,include George Massaro, our Chief Operating OfficerVice Chairman and a board member, Gary Burge, our Chief Financial Officer, Daniel Broadhurst, our Vice President of Operations, James Rojas, our Vice President of Corporate Development, and John McCartney, a director nominee.board member. These individuals collectively hold 2.1%0.5% of the common interests and 2.3% of the preferred interests in HCG Holdings LLC. Paul Yovovich, whom we expectPrior to add to our board after the consummation of this offering, HCG Holdings LLC will redeem the 1.7% common membership interest formerly held by Gary Holdren, our Chief Executive Officer and a board member, in exchange for              shares of our common stock owned by HCG Holdings LLC and certain cash consideration. These shares of common stock will not be sold in this offering. In addition, Paul Yovovich, a board member, is president and a member of Lake Capital Management LLC and controls Lake Capital Partners LP. Mr. Yovovich also directly holds 2.9%3.0% of the common interests and 1.0% of the preferred interests in HCG Holdings LLC.

In recognition of the substantial reduction in HCG Holdings LLC currently owns approximately 93% of our outstanding common stock and all of our outstanding 8% preferred stock and 8% promissory notes. Some of our executive officers, each ofLLC’s ownership percentage following this offering, Mr. Yovovich has advised us that he intends to resign from our board members and some of our current and former employees own the remaining approximately 7% of our outstanding common stock.

Equity compensation awards

On the date ofin connection with this prospectus, we intend to grant equity-based compensation awards to our executive officers and certain of our employees and each of our independent directors.offering.

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All of the awards described above will be made under our 2004 Omnibus Stock Plan after we file a registration statement on Form S-8 relating to that plan. This Form S-8, which will also relate to our three other equity incentive plans, is expected to be filed on the date of this prospectus after the effectiveness of the registration statement of which this prospectus forms a part. The Form S-8 will become effective upon filing.

Redemption of 8% preferred stock and repayment of 8% promissory notes

As described in the section of this prospectus entitled “Use of proceeds,” we will use approximately $15.1 million of our net proceeds from this offering to redeem our outstanding 8% preferred stock and approximately $10.7 million to repay in full our outstanding 8% promissory notes. All of our 8% preferred stock and 8% promissory notes are owned by HCG Holdings LLC. We expect that HCG Holdings LLC will distribute substantially all of the proceeds it receives from the sale of the shares being offered by it in this offering, the redemption of the outstanding 8% preferred stock and the repayment by us of the 8% promissory notes to its members in accordance with its governing documents. Assuming that this offering is consummated at a public offering price of $15.00 per share, the mid-point of the range shown on the cover of this prospectus, and HCG Holdings LLC distributes the entire amount of its proceeds from the foregoing transactions, we estimate that Messrs. Holdren, Massaro, Burge, Broadhurst and McCartney will receive a payment of approximately $875,000, $87,500, $43,800, $43,800 and $43,800, respectively.

See “Use of proceeds,” “Certain relationships and related transactions,” “Principal and selling stockholders” and “Description of capital stock” for further information regarding the matters discussed above.

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Post-offering corporate structure and ownershipPOST-OFFERING CORPORATE STRUCTURE AND OWNERSHIP

The following organizational chart sets forth the corporate structure and percentage ownership of preferred interests (“PI”) and common interests (“CI”) in HCG Holdings LLC and of our common stock after giving effect to this offering (without giving effect to the exercise of the underwriters’ over-allotment option).option. Our post-offering ownership structure gives effect to the issuance by us of the 769,700 shares of restricted common stock to be granted to our executive officers and certain of our employees on the date of this prospectus, but does not give effect to 1,670,0411,381,206 shares of common stock issuable upon the exercise of outstanding options at September 17, 2004, 75,800August 15, 2005 (including      shares of common stock issuablethat will be issued upon the exercise of options to be granted to one of our executive officers andby certain of our employees on the date ofselling stockholders in connection with this prospectus or 53,332 shares of common stock issuable upon the exercise of options to be granted to our independent directors on the date of this prospectus.offering).

(Footnotes continued on following page.)

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CORPORATE INFORMATION

We were incorporated in Delaware in March 2002 and commenced operations in May 2002 and2002. We conduct all of our consulting activities through aour wholly-owned subsidiary,subsidiaries, Huron Consulting Services LLC and Speltz & Weis LLC. Our headquarters are located at 550 West Van Buren Street, Chicago, Illinois 60607 and our telephone number is (312) 583-8700. Our web site is www.huronconsultinggroup.com. Information contained on our web site is not incorporated by reference into this prospectus. You should not consider information contained on our web site as part of this prospectus.

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The offering

Unless otherwise indicated, all information in this prospectus assumes the underwriters do not exercise their over-allotment option, which entitles them to purchase up to 600,000 additional shares of our common stock from HCG Holdings LLC, one of the selling stockholders.

The number of shares of our common stock outstanding immediately after this offering is based on the number of shares outstanding at September 17, 2004.August 15, 2005 and includes        shares of common stock offered hereby and to be issued upon the exercise of stock options held by some of the selling stockholders. This number includes the 769,700 shares of restricted common stock that we intend to grant to our executive officers and certain of our employees on the date of this prospectus, but does not include:

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Unless otherwise indicated, all information inWe have agreed to pay the expenses associated with this prospectus assumes:offering, other than the underwriting discounts and commissions.

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Summary historical consolidated and pro forma financial and other operating data

We have derived the following summary historical consolidated financial data for the period from March 19, 2002 (inception) to December 31, 2002 and for the yearyears ended December 31, 2003 and 2004 from our audited consolidated financial statements except for the pro forma data.included elsewhere in this prospectus. We have derived the following summary historical consolidated financial data for the six months ended June 30, 20032004 and 20042005 and as of June 30, 20042005 from our unaudited interim consolidated financial statements except for the pro forma data.included elsewhere in this prospectus. In the opinion of management, this information containsthe unaudited interim consolidated financial statements reflect all adjustments consisting only of a normal recurring accruals,nature necessary for athe fair presentation of our results of operations and financial position for such periods.

The historical consolidated statements of operations and other operating data for the six months ended June 30, 2005 includes the results of operations and other operating data of Speltz & Weis LLC since May 9, 2005, the date of its acquisition. In order to present data that is useful for comparative purposes, we have provided pro forma statements of operations data for the year ended December 31, 2004 and the six months ended June 30, 2005, which gives pro forma effect to our May 2005 acquisition of Speltz & Weis LLC as if the acquisition was consummated at the beginning of the periods presented. The pro forma statements of operations data is not necessarily indicative of what actually would have occurred if the acquisition had been effective for the periods presented and should not be taken as representative of our future consolidated results of operations.

The summary informationhistorical consolidated and pro forma financial and other operating data set forth below is not necessarily indicative of the results of future operations and should be read in conjunction with “Selected consolidated financial and other operating data,” “Management’s discussion and analysis of financial condition and results of operations” and theoperations,” our consolidated financial statements and related notes, Speltz & Weis LLC’s financial statements and related notes and the unaudited pro forma financial statements and related notes, in each case, included elsewhere in this prospectus.

The pro forma as adjusted balance sheet data gives effect to the following transactions as if each had occurred on June 30, 2004:

For further information regarding the redemption of our 8% preferred stock and the repayment of our 8% promissory notes, see the section of this prospectus entitled “Use of proceeds.”

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(See footnotes on the following page.)

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Risk factors

Investing in our common stock involves a high degree of risk. You should carefully consider the risks below before making an investment decision. Our business, financial condition or results of operations could be materially adversely affected by any of these risks. In such an event, the trading price of our common stock could decline, and you may lose all or part of your investment.

RISKS RELATED TO OUR BUSINESS

Our inability to retain our senior management team and other managing directors would be detrimental to the success of our business.

We rely heavily on our senior management team, including Gary Holdren, our Chief Executive Officer, and George Massaro, our Vice Chairman, Daniel Broadhurst, our Vice President of Operations, Gary Burge, our Chief OperatingFinancial Officer and Treasurer, James Rojas, our Vice President of Corporate Development, and other managing directors, and our ability to retain them is particularly important to our future success. On or about January 1, 2006, Mr. Massaro intends to reduce his workload to a part time, or approximately one-third, basis and to dedicate his efforts to strategic initiatives for us, including major client assignments. Given the highly specialized nature of our services, these people must have a thorough understanding of our service offerings as well as the skills and experience necessary to manage an organization consisting of a diverse group of professionals. In addition, we rely on our senior management team and other managing directors to generate and market our business. Further, in light of our limited operating history, our senior management’s and other managing directors’ personal reputations and relationships with our clients are a critical element in obtaining and maintaining client engagements. Although we enter into non-solicitation agreements with our senior management team and other managing directors, we do not enter into non-competition agreements. Accordingly, members of our senior management team and our other managing directors are not contractually prohibited from leaving or joining one of our competitors, and some of our clients could choose to use the services of that competitor instead of our services. In addition, our executive officers holding interests in HCG Holdings LLC consist of Messrs. Massaro, Broadhurst, Burge and Rojas. These individuals collectively hold 0.4% of the common interests in HCG Holdings LLC. If any of the above-described individuals realize substantial financial benefits as a result of their securities ownership in HCG Holdings LLC, their financial incentive to stay with us may be reduced. If one or more members of our senior management team or our other managing directors leave and we cannot replace them with a suitable candidate quickly, we could experience difficulty in securing and successfully completing engagements and managing our business properly, which could harm our business prospects and results of operations.

Our senior management team and our other managing directors will receive substantial financial benefits as a result of this offering, which may reduce the financial incentive for them to stay with us.

Our senior management team and our other managing directors collectively hold options to purchase 1,502,630 shares of our common stock. Of these, options to purchase 145,608 shares are currently vested, options to purchase 420,659 shares will vest upon consummation of this offering pursuant to their terms and the remaining options to purchase 936,363 will fully vest at various times over the next four years. These options have exercise prices ranging from $0.02 to $1.96 per share. An individual may be more likely to leave us after their options fully vest, especially if the shares underlying the options have significantly appreciated in value relative to the option exercise price. In addition, a trust for the benefit of the family of Mr. Holdren, our Chief Executive Officer, holds 521,740 shares of restricted common stock that he purchased for $0.02 per share, of which 163,043 shares are currently vested and the remaining 358,697 will fully vest immediately prior to the consummation of this offering. On the date of this prospectus, we intend to grant 769,700 shares of restricted common stock to our executive officers and certain of our employees. The restricted shares will vest over a four year period, with 25% vesting on each anniversary of the grant date during that period. Our executive officers who will be granted shares of restricted common stock are Messrs. Holdren, Massaro, Burge and Broadhurst, Ms. Delgado and Ms. Sawall, who will be granted 158,700, 32,600, 10,900, 10,900, 8,700 and 6,500 shares of restricted common stock, respectively. In addition, we intend to grant options to purchase 75,800 shares of our common stock to certain of our employees on the date of this prospectus, including one of

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Risk factors

our executive officers, Ms. Delgado, who will receive options to purchase 13,100 shares of our common stock. These options will have a per share exercise price equal to the public offering price and will vest over a four-year period, with 25% vesting on each anniversary of the grant date during that period. We also intend to grant to each of our independent directors options exercisable for 13,333 shares of our common stock, assuming a public offering price of $15.00 per share, the mid-point of the range shown on the cover of this prospectus. These options will have a per share exercise price equal to the public offering price and will vest over a three-year period, with one-third vesting on the grant date and one-third vesting on the date of each of the next two annual meetings.

In addition, some of our executive officers and other managing directors, each of our board members and a director nominee are members of HCG Holdings LLC, which is our parent and the selling stockholder, and collectively hold 5.7% of the common interests and 6.4% of the preferred interests in HCG Holdings LLC. Our executive officers, board members and the director nominee holding interests in HCG Holdings LLC are Messrs. Holdren, Massaro, Burge, Broadhurst and McCartney. These individuals collectively hold 2.1% of the common interests and 2.3% of the preferred interests in HCG Holdings LLC. If any of the above-described individuals realize substantial financial benefits as a result of their securities ownership in us or HCG Holdings LLC, their financial incentive to stay with us may be reduced. These individuals already realized a financial benefit when HCG Holdings LLC used the proceeds it received from the special dividend that we paid on June 29, 2004 together with other funds of HCG Holdings LLC to redeem a portion of its outstanding preferred interests on a pro rata basis, including a portion of the preferred interests held by these people. In connection with this redemption, Messrs. Broadhurst, Burge, Holdren, Massaro and McCartney received an aggregate amount of approximately $4,540, $4,540, $90,788, $9,079 and $4,540, respectively, of which approximately $1,097, $1,097, $21,933, $2,193 and $1,097, respectively, was paid out of the proceeds of the dividend. These individuals will also realize a financial benefit if HCG Holdings LLC makes a distribution to its members of the proceeds it receives from (1) the sale of the shares being offered by it in this offering, (2) the redemption of the 8% preferred stock and (3) the repayment of the 8% promissory notes held by HCG Holdings LLC. Assuming that this offering is consummated at a public offering price of $15.00 per share, the mid-point of the range shown on the cover of this prospectus, and HCG Holdings LLC distributes the entire amount of its proceeds from the foregoing transactions, we estimate that Messrs. Broadhurst, Burge, Holdren, Massaro and McCartney will receive a payment of approximately $43,800, $43,800, $875,000, $87,500 and $43,800, respectively.

Our inability to hire and retain talented people in an industry where there is great competition for talent could have a serious negative effect on our prospects and results of operations.

Our business involves the delivery of professional services and is highly labor-intensive. Our success depends largely on our general ability to attract, develop, motivate and retain highly skilled consultants. The loss of a significant number of our consultants or the inability to attract, hire, develop, train and retain additional skilled personnel could have a serious negative effect on us, including our ability to manage, staff and successfully complete our existing engagements and obtain new engagements. Qualified consultants are in great demand, and we face significant competition for both senior and junior consultants with the requisite credentials and experience. Our principal competition for talent comes from other consulting firms, accounting firms and technical and economic advisory firms, as well as from organizations seeking to staff their internal professional positions. Many of these competitors may be able to offer significantly greater compensation and benefits or more attractive lifestyle choices, career paths or geographic locations than we do. Therefore, we may not be successful in attracting and retaining the skilled consultants we require to conduct and expand our operations successfully. Increasing competition for these consultants may also significantly increase our labor costs, which could negatively affect our margins and results of operations.

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Risk factors

We have experienced net losses for mosta significant portion of our history, and our limited operating history makes evaluating our business difficult.

We have been operating since May 2002. For the period from March 19, 2002 (inception) through December 31, 2002 and for the year ended December 31, 2003, we experienced net losses of $4.2 million and $1.1 million, respectively. Although we generated net income of $7.2$10.9 and $9.5 million for the year ended December 31, 2004 and the six months ended June 30, 2004,2005, respectively, we may not sustain profitability in the future. For example, we generated net income of $1.9 million for the six months ended June 30, 2003, but experienced a net loss for the year ended December 31, 2003. Our net losses, among other things, have had, and should net losses occur in the future, will have, an adverse effect on our stockholders’ equity and working capital. As of June 30, 2004, we had a total stockholders’ deficit of $0.2 million. To sustain profitability, we must:

We may not be successful in accomplishing these objectives. Further, our limited operating history makes it difficult to evaluate our business and prospects. Our prospects must be considered in light of the risks, uncertainties, expenses and difficulties frequently encountered by companies in their early stages of development, particularly companies in highly competitive industries. The historical information in this prospectus may not be indicative of our future financial condition and future performance. For example, we expect that our future annual growth rate in revenues will moderate and likely be less than the growth rates experienced in 2003 and the first six months of 2004.

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Risk factors

If we are unable to manage the growth of our business successfully, we may not be able to sustain profitability.

We have grown significantly since we commenced operations, more than doubling the number of our consultants from 213 on May 31, 2002 to 486557 as of September 17, 2004.June 30, 2005. As we continue to increase the number of our consultants, we may not be able to successfully manage a significantly larger workforce. Additionally, our significant growth has placed demands on our management and our internal systems, procedures and controls and will continue to do so in the future. To successfully manage growth, we must add administrative staff and periodically update and strengthen our operating, financial, accounting and other systems, procedures and controls, which will increase our costs and may adversely affect our gross profits and our ability to sustain profitability if we do not generate increased revenues to offset the costs. This need to augment our support infrastructure due to growth is compounded by our decision to becomebecoming a public reporting company and the increased expense that will ariseincurred in complying with existing and new regulatory requirements. As a public company, our information and control systems must enable us to prepare accurate and timely financial information and other required disclosure. If we discover deficiencies in our existing information and control systems that impede our ability to satisfy our reporting requirements, we must successfully implement improvements to those systems in an efficient and timely manner.

Our financial results could suffer if we are unable to achieve or maintain adequate utilization and suitable billing rates for our consultants.

Our profitability depends to a large extent on the utilization and billing rates of our consultants. Utilization of our consultants is affected by a number of factors, including:

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Risk factors

The billing rates of our consultants that we are able to charge are also affected by a number of factors, including:

If we are unable to achieve and maintain adequate overall utilization as well as maintain or increase the billing rates for our consultants, our financial results could materially suffer.

13

Risk factors

A significant portion of our revenues areis derived from a limited number of clients, and our engagement agreements, including those related to our largest clients, can be terminated by our clients with little or no notice and without penalty, which may cause our operating results to be unpredictable.

As a consulting firm, we have derived, and expect to continue to derive, a significant portion of our revenues from a limited number of clients. Our ten largest clients accounted for 36.3% of our revenues in the partial year ended December 31, 2002, 32.1% of our revenues in the year ended December 31, 2003, 27.8% of our revenues in the year ended December 31, 2004 and 32.5%38.8% of our revenues in the six months ended June 30, 2004.2005. One of our clients accounted for 12.6% of our revenues in the six months ended June 30, 2005 and represented 12.2% of our receivables and unbilled services balance as of June 30, 2005. Our clients typically retain us on an engagement-by-engagement basis, rather than under fixed-term contracts, and the volume of work performed for any particular client is likely to vary from year to year, and a major client in one fiscal period may not require or decide to use our services in any subsequent fiscal period. Accordingly, the failure to obtain new large engagements or multiple engagements from existing or new clients could have a material adverse effect on the amount of revenues we generate.

In addition, almost all of our engagement agreements can be terminated by our clients with little or no notice and without penalty. For example, in engagements related to litigation, if the litigation were to be settled, our engagement for those services would no longer be necessary and therefore would be terminated. In client engagements that involve multiple engagements or stages, there is a risk that a client may choose not to retain us for additional stages of an engagement or that a client will cancel or delay additional planned engagements. These terminations,For clients in bankruptcy, a bankruptcy court could elect not to retain our interim management consultants, terminate our retention or require us to reduce our fees for the duration of an engagement. For example, shortly after we acquired Speltz & Weis LLC, its largest client that accounted for approximately 82.8% of its 2004 revenues filed for bankruptcy, and the bankruptcy court could reject the motion to allow the retention of our services. Terminations, cancellations, delays or delaysreductions could result from factors unrelated to our services or the progress of the engagement. When engagements are terminated or reduced, we lose the associated future revenues, and we may not be able to recover associated costs or redeploy the affected employees in a timely manner to minimize the negative impact. In addition, our clients’ ability to terminate engagements with little or no notice and without penalty makes it difficult to predict our operating results in any particular fiscal period.

16

Risk factors

Our ability to maintain and attract new business depends upon our reputation, the professional reputation of our consultants and the quality of our services.

As a professional services firm, our ability to secure new engagements depends heavily upon our reputation and the individual reputations of our consultants. Any factor that diminishes our reputation or that of our consultants, including not meeting client expectations or misconduct by our consultants, could make it substantially more difficult for us to attract new engagements and clients. Similarly, because we obtain many of our new engagements from former or current clients or from referrals by those clients or by law firms that we have worked with in the past, any client that questions the quality of our work or that of our consultants could impair our ability to secure additional new engagements and clients.

The consulting services industry is highly competitive, and we may not be able to compete effectively.

The consulting services industry in which we operate includes a large number of participants and is intensely competitive. We face competition from other business operations and financial consulting firms, general management consulting firms, the consulting practices of major accounting firms, technical and economic advisory firms, regional and specialty consulting firms and the internal professional resources

14

Risk factors

of organizations. In addition, because there are relatively low barriers to entry, we expect to continue to face additional competition from new entrants into the business operations and financial consulting industries. We have six core offices and two smaller offices in the United States and do not have any international offices. Many of our competitors have a greater national presence and are also international in scope, as well as have significantly greater personnel, financial, technical and marketing resources. In addition, these competitors may generate greater revenues and have greater name recognition than we do. Our ability to compete also depends in part on the ability of our competitors to hire, retain and motivate skilled consultants, the price at which others offer comparable services and our competitors’ responsiveness to their clients. If we are unable to compete successfully with our existing competitors or with any new competitors, our financial results will be adversely affected.

Additional hiring and any acquisitions could disrupt our operations, increase our costs or otherwise harm our business.

Our business strategy is dependent in part upon our ability to grow by hiring individuals or groups of consultants and by potentially acquiring additional complementary businesses. However, we may be unable to identify, hire, acquire or successfully integrate new consultants and complementary businesses without substantial expense, delay or other operational or financial problems. Competition for future hiring and acquisition opportunities in our markets could increase the compensation we offer to potential consultants or the price we pay for businesses we wish to acquire. In addition, we may be unable to achieve the financial, operational and other benefits we anticipate from any hiring or acquisition.acquisition, including with respect to Speltz &Weis LLC. Hiring additional consultants or acquiring complementary businesses could also involve a number of additional risks, including:

17

Risk factors

If we fail to successfully address these risks, our ability to compete may be impaired.

If the number of large bankruptcies continues to declinedeclines or other factors cause a decrease in demand for our corporate advisory services, our revenues and profitability could suffer.

Our corporate advisory services practice provides various turnaround, restructuring and bankruptcy services to companies in financial distress or their creditors or other stakeholders. This practice accounted for 30.7%23.4% and 27.0%11.7% of our revenues for the year ended December 31, 20032004 and the six months ended June 30, 2004,2005, respectively. We are typically engaged in connection with a bankruptcy

15

Risk factors

case when the bankruptcy is of the size and complexity that generally requires the debtor or other constituents to retain the services of financial advisors. A number of other factors also affect demand for this practice. These factors include:

If the number of large bankruptcies continues to declinedeclines or other factors cause a decrease in demand for our corporate advisory services, the revenues from our turnaround, restructuring and bankruptcy services could decline, which could harm our ability to sustain profitability.

We face an increased risk of fee nonpayment or reduced payment in our corporate advisory services practice.

Many of the clients in our corporate advisory services practice have engaged us because they are experiencing financial distress. These clients may not have sufficient funds to continue operations or to pay for our services. We usually do not receive retainers before we begin performing services on a client’s behalf in connection with our restructuring business, and we are not always able to obtain retainers from clients in bankruptcy as the bankruptcy court must approve our retainers for those clients. When we do receive retainers, the retainers may not adequately cover our fees for the services we perform on behalf of these clients. Even if a bankruptcy court approves our retainer or engagement, a bankruptcy court has the discretion to require us to return all, or a portion of, our fees or to reduce our fees for the duration of the engagement. Therefore, we face the risk of nonpayment or reduced payment, either of which can result in write-offs.

The profitability of our fixed-fee engagements with clients may not meet our expectations if we underestimate the cost of these engagements.

Fixed-fee engagements generated approximately 11.9%11.8% and 12.3%14.4% of our revenues for the year ended December 31, 20032004 and the six months ended June 30, 2004,2005, respectively. When making proposals for fixed-fee engagements, we estimate the costs and timing for completing the engagements. These estimates reflect our best judgment regarding the efficiencies of our methodologies and consultants as we plan to deploy them on engagements. Any increased or unexpected costs or unanticipated delays in connection with the performance of fixed-fee engagements, including delays caused by factors outside our control, could make these contracts less profitable or unprofitable, which would have an adverse effect on our profit margin.

18

Risk factors

Revenues from our performance-based engagements are difficult to predict, and the timing and extent of recovery of our costs is uncertain.

From time to time, primarily in our corporate advisory services and strategic sourcing practices, we enter into engagement agreements under which our fees include a significant performance-based component. Performance-based fees are contingent on the achievement of specific measures, such as our clients meeting cost-saving or other contractually defined goals. The achievement of these contractually-defined goals is often impacted by factors outside of our control, such as the actions of our client or third parties. Because performance-based fees are contingent, revenues on such engagements, which are recognized when all revenue recognition criteria are met, are not certain and the timing of receipt is difficult to predict and may not occur evenly throughout the year. While performance-based fees comprised 3.3%5.1% and 6.9%2.0% of our revenues for the year ended December 31, 20032004 and the six months ended June 30, 2004,2005, respectively, we intend to continue to enter into performance-based fee arrangements and these engagements may impact our revenues to a greater extent in the future. Should performance-based fee arrangements represent a greater percentage of our business in the future, we may experience increased volatility in our working capital requirements and greater variations in our quarter-to-quarter results, which could affect the price of our common stock. In addition, an increase in the proportion of performance-based fee arrangements may offset the positive effect on our operating results from increases in our utilization rate or average billing rate per hour.

Conflicts of interest could preclude us from accepting engagements thereby causing decreased utilization and revenues.

We provide services in connection with bankruptcy proceedings and litigation proceedings that usually involve sensitive client information and frequently are adversarial. In connection with bankruptcy proceedings, we are required by law to be “disinterested” and inmay not be able to provide multiple

16

Risk factors

services to a particular client. In litigation, we would generally be prohibited from performing services in the same litigation for the party adverse to our client. In addition, our engagement agreement with a client or other business reasons may preclude us from accepting engagements with our clients’ competitors or adversaries. As we increase the size of our operations, the number of conflict situations can be expected to increase. Moreover, in many industries in which we provide services, there has been a continuing trend toward business consolidations and strategic alliances. These consolidations and alliances reduce the number of companies that may seek our services and increase the chances that we will be unable to accept new engagements as a result of conflicts of interest. If we are unable to accept new engagements for any reason, our consultants may become underutilized, which would adversely affect our revenues and results of operations in future periods.

Expanding our service offerings or number of offices may not be profitable.

We may choose to develop new service offerings or open new offices because of market opportunities or client demands. Developing new service offerings involves inherent risks, including:

In addition, expanding into new geographic areas and/or expanding current service offerings is challenging and may require integrating new employees into our culture as well as assessing the demand in the applicable market. For example, in August 2003, we established a small office in Palo Alto, California to service the SilconSilicon Valley marketplace and, in September 2003, we established a small office in Miami, Florida to deepen our corporate finance capabilities. These offices did not meet our expectations and, therefore, we subsequently closed those offices and incurred a restructuring charge of

19

Risk factors

$2.1 $2.1 million in the six months ended June 30, 2004. In SeptemberAlso in 2004, we decided to eliminate a service offering of a practice area in our operational consultingOperational Consulting segment that was not meeting our expectations. Additionally, inexpectations and incurred a continual effort to streamline our operations and allocate resources more appropriately, we reduced our headcount in certain other practice areas across both segments. In connection with these actions, we expect to record charges in the third quarterrestructuring charge of approximately $2.1 million for severance payments.$1.3 million. If we cannot manage the risks associated with new service offerings or new locations effectively, we are unlikely to be successful in these efforts, which could harm our ability to sustain profitability and our business prospects.

Our engagements could result in professional liability, which could be very costly and hurt our reputation.

Our engagements typically involve complex analyses and the exercise of professional judgment. As a result, we are subject to the risk of professional liability. If a client questions the quality of our work, the client could threaten or bring a lawsuit to recover damages or contest its obligation to pay our fees. Litigation alleging that we performed negligently or breached any other obligations to a client could expose us to significant legal liabilities and, regardless of outcome, is often very costly, could distract our management and could damage our reputation. We are not always able to include provisions in our engagement agreements that are designed to limit our exposure to legal claims relating to our services. Even if these limiting provisions are included in an engagement agreement, they may not protect us or may not be enforceable under some circumstances. In addition, we carry professional liability insurance to cover many of these types of claims, but the policy limits and the breadth of coverage may be inadequate to cover any particular claim or all claims plus the cost of legal defense. For example, we provide services on engagements in which the impact on a client may substantially exceed the limits of our errors and omissions insurance coverage. If we are found to have professional liability with respect to work performed on such an engagement, we may not have sufficient insurance to cover the entire liability.

17

Risk factors

Our intellectual property rights in our “Huron Consulting Group” name are important, and any inability to use that name could negatively impact our ability to build brand identity.

We believe that establishing, maintaining and enhancing the “Huron Consulting Group” name is important to our business. We are, however, aware of a number of other companies that use names containing “Huron.” There could be potential trade name or service mark infringement claims brought against us by the users of these similar names and marks and those users may have trade name or service mark rights that are senior to ours. If another company were to successfully challenge our right to use our name, or if we were unable to prevent a competitor from using a name that is similar to our name, our ability to build brand identity could be negatively impacted.

We or some of our consultants could be named in lawsuits because we were founded by former Arthur Andersen LLP partners and professionals and contracted with Arthur Andersen for releases from non-competition agreements.

We were founded by a core group of consultants that consisted primarily of former Arthur Andersen LLP partners and professionals, and we entered into a contract with Arthur Andersen to release these partners and professionals from non-competition agreements with Arthur Andersen. These circumstances might lead creditors of Arthur Andersen and other parties to bring claims against us or some of our managing directors or other consultants seeking recoveries for liabilities of Arthur Andersen and we may not be able to successfully avoid liability for such claims. In addition, litigation of this nature or otherwise could divert the time and attention of our managing directors and consultants, and we could incur substantial defense costs.

20

Risk factors

As a holding company, we are totally dependent on distributions from our operating subsidiarysubsidiaries to pay dividends or other obligations and there may also be other restrictions on our ability to pay dividends in the future.

We are a holding company with no business operations. Our only significant asset is the outstanding equity interestinterests of our two wholly-owned operating subsidiary.subsidiaries. As a result, we must rely on payments from our subsidiarysubsidiaries to meet our obligations. We currently expect that the earnings and cash flow of our subsidiarysubsidiaries will primarily be retained and used by itthem in itstheir operations, including servicing any debt obligations itthey may have now or in the future. Accordingly, although we do not anticipate paying any dividends in the foreseeable future, our subsidiarysubsidiaries may not be able to generate sufficient cash flow to distribute funds to us in order to allow us to pay future dividends on, or make any distribution with respect to, our common stock. Our future credit facilities, other future debt obligations and statutory provisions may also limit our ability to pay dividends or make any distribution in respect of our common stock.

RISKS ASSOCIATED WITH PURCHASING OUR COMMON STOCK IN THIS OFFERING

As a new investor, you will incur immediate and substantial dilution.

If you purchase shares of our common stock in this offering, you will experience an immediate and substantial dilution of $12.38$             in pro forma net tangible book value per share of your investment as described in the section of this prospectus entitled “Dilution.”(without giving effect to options exercised by any selling stockholders). This means that the price you pay for the shares you acquire in this offering will be significantly higher than their net tangible book value per share. If we issue additional shares of common stock in the future, you may experience further dilution in the net tangible book value of your shares. Likewise, you will incur additional dilution if the holders of outstanding options to purchase shares of our common stock at prices below our net tangible book value per share exercise their options after this offering. As of September 17, 2004,August 15, 2005, there were 1,670,0411,381,206 shares of common stock issuable upon the exercise of outstanding stock options, with a weighted average exercise price of $0.75$2.16 per share.share (including      shares of common stock that will be issued to certain selling stockholders upon the exercise of outstanding stock options, with a weighted average exercise price of $     per share, in connection with this offering).

18

Risk factors

Sales of a substantial number of shares of our common stock following this offering may adversely affect the market price of our common stock, and the issuance of additional shares will dilute all other stockholdings.

Sales of a substantial number of shares of our common stock in the public market following this offering, or the perception that large sales could occur, could cause the market price of our common stock to decline or limit our future ability to raise capital through an offering of equity securities. After completion of this offering, there will be 16,285,960Of the          shares of our common stock expected to be outstanding including the 769,700 shares of restricted common stock that we intended to grant on the dateupon consummation of this prospectus to our executive officers and certain of our employees. All of the shares of common stock sold in this offeringoffering: (1) approximately         % will be freely tradable without restriction or further registration under the federal securities laws unless purchased by our “affiliates” within the meaning of Rule 144 under the Securities Act. All of the remaining 11,285,960and (2) approximately         shares of outstanding common stock, representing approximately 69% of the outstanding common stock upon completion of this offering, will be “restricted securities” under the Securities Act, subject to restrictions on the timing, manner and volume of sales of those shares. UponAfter consummation of this offering, HCG Holdings LLC and Gary E. Holdren will continue to be entitled to certain registration rights with respect to 10,005,881 restricted securities. In addition, our certificate of incorporation permits the issuance of up to 500,000,000 shares of common stock. After this offering,As of August 15, 2005, we estimate that we will havehad an aggregate of approximately 483,714,040482,768,911 shares of our common stock authorized but unissued. Thus, we have the ability to issue substantial amounts of common stock in the future, which would dilute the percentage ownership held by the investors who purchase our shares in this offering.

The company,We, each member of our board of directors, each of our director nominees, each of our executive officers and managing directors and theeach selling stockholder have agreed for a period of at least 18090 days after the date of this prospectus, to not, without the prior written consent of UBS Securities

21

Risk factors

LLC, and Deutsche Bank Securities Inc., directly or indirectly, offer to sell, sell, pledge or otherwise dispose of any shares of our common stock, subject to certain permitted exceptions. Following the expiration of the lock-up period,          11,182,442 shares of common stock subject to these agreements, including shares issuable upon the exercise of vested options 18090 days after the date of this prospectus, will be available for sale in the public market, subject to the vesting of the restricted common stock during the lock-up period and the restrictions on sales of “restricted securities” under the Securities Act.

We have adopted threefour equity incentive plans, and,one of which was adopted immediately prior to the consummationcompletion of the offering, we intend to adopt a new equity incentive plan.our initial public offering. See “Management—Equity Incentive Plans” for further information regarding our equity incentive plans. Following the effectiveness of the registration statement of which this prospectus forms a part, we intend to fileWe filed a registration statement on Form S-8 under the Securities Act covering the 2,141,000 shares that will beare reserved for issuance under our newnewly adopted plan as well as the1,612,640 shares reserved for issuance upon the exercise of options outstanding under our three existing plans, which asother plans. As of September 17, 2004 was 1,670,041.August 15, 2005, there were 1,381,206 shares of common stock issuable upon the exercise of outstanding stock options. Accordingly, subject to applicable vesting requirements with respect to options and shares of restricted common stock, exercise with respect to options, the provisions of Rule 144 with respect to affiliates and, if applicable, expiration of the 180-day90 day lock-up agreements, shares registered under that registration statement will be available for sale in the open market. As soon as practicable following the filing of the Form S-8 registration statement, we intend to grant 769,700 shares of restricted common stock to certain of our executive officers and employees, options exercisable for 75,800 shares of our common stock, with a per share exercise price equal to the public offering price, to one of our executive officers and certain of our employees, and options exercisable for 13,333 shares of our common stock, with a per share exercise price equal to the public offering price and assuming a public offering price of $15.00 per share, the mid-point of the range shown on the cover of this prospectus, to each of our independent directors.

For a more detailed description of additional shares that may be sold in the future, see the sections of this prospectus captioned “Shares eligible for future sale” and “Underwriting.”

Because HCG Holdings LLC will have the ability to continue to controlsignificantly influence us after this offering, the influence of our public stockholders over significant corporate actions will be limited.

After the completion of this offering, HCG Holdings LLC will control approximately        59%% of our outstanding common stock, or approximately        54%% if the underwriters exercise their over-allotment option in full. As a result, after this offering, HCG Holdings LLC will continue to have the power to controlsignificantly influence all matters submitted to our stockholders, including the election of our directors and amendments to our certificate of incorporation, and will have the ability to approve or preventsignificantly influence any transaction that requires the approval of stockholders regardless of whether or not other stockholders believe that any such transactions are in their own best interests. So long as HCG Holdings LLC continues

19

Risk factors

to own a significant amount of the outstanding shares of our common stock, it will continue to be able to strongly influence or effectively control our decisions.

Conflicts of interests between HCG Holdings LLC and us or you could arise in the future.

Conflicts of interests between HCG Holdings LLC and us or you could arise in the future, and these conflicts may not be resolved in our or your favor. For instance,Lake Capital Partners LP and its affiliates, which control HCG Holdings LLC, are in the business of making investments in companies and have, and may from time to time acquire and hold, interests in businesses that compete directly or indirectly with us. These entities may also pursue acquisition opportunities that may be complementary to our business, and as a result, those acquisition opportunities may not be available to us. In addition, HCG Holdings LLC, through its significant ownership interest in us, may seek to cause us to take courses of action that, in its judgment, could enhance its investment in us, but which might involve risks to, or otherwise adversely affect, us or you.

22

Risk factors

In addition, after this offering, some of our executive officers and managing directors and a number of our board members will continue to be members of and hold equity interests in HCG Holdings LLC. These relationships with HCG Holdings LLC could create, or appear to create, potential conflicts of interests when these individuals are faced with decisions that could have different implications for our company and HCG Holdings LLC.

Our common stock does not have a trading history, and you may not be able to trade our common stock if an active trading market does not develop.

Prior to this offering, there has been no public market for our common stock. We have applied for quotation of our common stock on the NASDAQ National Market under the symbol “HURN.” Although the underwriters have informed us that they intend to make a market in our common stock, they are not obligated to do so, and any market-making may be discontinued at any time without notice. Therefore, an active trading market for our common stock may not develop or, if it does develop, may not continue. As a result, the market price of our common stock, as well as your ability to sell our common stock, could be adversely affected.

The value of your investment may be subject to sudden decreases due to the potential volatility of the price of our common stock.

The closing sales price of our common stock has ranged from a high of $28.30 per share to a low of $18.90 per share since our initial public offering in October 2004. The market price of our common stock may be highly volatile and subject to wide fluctuations in response to numerous factors, including the factors discussed in other risk factors, which could also cause variations in our quarterly results of operations, and the following factors:

These factors may adversely affect the trading price of our common stock, regardless of our actual operating performance, and could prevent you from selling your common stock at or above the initial public offering price. In addition, the stock markets from time to time experience extreme price and volume fluctuations that may be unrelated or disproportionate to the operating performance of companies.

In the past, some stockholders have brought securities class action lawsuits against companies following periods of volatility in the market price of their securities. We may in the future be the target of similar litigation. Securities litigation, regardless of whether we are ultimately successful, could result in substantial costs and divert management’s attention and resources.

Provisions of our certificate of incorporation and our bylaws could delay or prevent a takeover of us by a third party.

Our certificate of incorporation and bylaws could delay, defer or prevent a third party from acquiring us, despite the possible benefit to our stockholders, or otherwise adversely affect the price of our common stock. For example, our charter and bylaws will:bylaws:

23

Risk factors

20

Risk factors

These provisions may discourage potential takeover attempts, discourage bids for our common stock at a premium over market price or adversely affect the market price of, and the voting and other rights of the holders of, our common stock. These provisions could also discourage proxy contests and make it more difficult for you and other stockholders to elect directors other than the candidates nominated by our board. See “Description of capital stock” for additional information on the anti-takeover measures applicable to us.

We do not anticipate paying any dividends following the consummation of this offering.dividends.

Following the consummation of this offering, weWe currently expect that we will retain our future earnings, if any, for use in the operation and expansion of our business, and we do not anticipate paying any cash dividends. As a result, our stock may be less attractive to investors who seek dividend payments.

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Special note regarding forward-looking statements

Some of the statements under “Prospectus summary,” “Risk factors,” “Management’s discussion and analysis of financial condition and results of operations,” “Business” and elsewhere in this prospectus constitute forward-looking statements thatwithin the meaning of Section 27A of the Securities Act. These forward-looking statements reflect our current expectation about our future results, levels of activity, performance or achievements.achievements, including, without limitation, that our business continues to grow as currently expected, that we are able to expand our service offerings through our existing consultants and new hires, and that existing market conditions do not change from current expectations. In some cases, you can identify forward-looking statements by terminology such as “may,” “will,” “should,” “could,” “expects,” “plans,” “intends,” “anticipates,” “believes,” “estimates,” “predicts,“potential,” “potential” or “continue” or the negative of such terms or other comparable terminology. These statements involve known and unknown risks, uncertainties and other factors, including, among others, those described under “Risk factors” and elsewhere in this prospectus, that may cause actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements. Therefore, you should not place undue reliance on our forward-looking statements. Except to the extent required by applicable securities laws, we are under no duty and do not intend to update any of the forward-looking statements after the date of this prospectus.

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Use of proceeds

We estimate thatAll of the net proceeds that we will receive from our sale of 3,333,333 shares of common stock in this offering will be $42.8 million, assuming a public offering price of $15.00 per share, the mid-point of the range shown on the cover ofoffered by this prospectus and after deductingare being sold by the estimated underwriting discounts and commissions and estimated offering expenses payable by us.selling stockholders. We will not receive any proceeds from the sale of shares by the selling stockholder.

stockholders. We currently estimate that we will use our net proceeds from this offeringreceive approximately $     for the following:

The redemption amount of the 8% preferred stock is equaloptions to the original issuance price of $1,000 per share plus cumulative dividends that will have accrued on a daily basis from the date of investment through the date of the redemption at a rate of 8% per annum, compounded annually, together with a liquidation participation amount. The liquidation participation amount is calculated as if we were liquidated on the date of the redemption and the excess of our assets over our liabilities (with the liabilities including, for purposes of this calculation, the aggregate stated value of all outstandingpurchase      shares of preferred stock and all accrued and unpaid interest) were distributed on a share for share basis among the holders of preferred stock and common stock. We expect the redemption date to be within two business days after the consummation of this offering.

The 8% promissory notes were issued at various times in 2002 and mature five years and six months from the date of issuance, subject to mandatory prepayment upon the occurrence of specified events, including the consummation of this offering. Interest on the promissory notes, which is payable annually, accrues at a rate of 8% per year.

Borrowings under the credit agreement bear interest at either the prime rate or LIBOR plus 2.75% and are secured by substantially all of our assets. Borrowings under the credit agreement are payable at the expiration of the agreement in February 2005, subject to our compliance with a covenant that requires that we have an uninterrupted 30-day period each year with no loans outstanding. There were no borrowings outstanding under the credit agreement as of June 30, 2004 and September 23, 2004.

HCG Holdings LLC, our parent and the selling stockholder in this offering, currently owns approximately 93% of our common stock and all of our outstanding 8% preferred stock and 8% promissory notes. HCG Holdings LLC is controlled by Lake Capital Partners LP and Lake Capital Management LLC. The remaining equity interests in HCG Holdings LLCthat are heldbeing sold by certain other institutional investors, some of our executive officers and 24 of our other managing directors, each of our board members, a director nominee and 31 other holders. Our executive officers, board members and the director nominee holding interests in HCG Holdings LLC are Messrs. Holdren, Massaro, Burge, Broadhurst and McCartney. If, as we expect, HCG Holdings LLC distributes to its members all of the proceeds it receives from the sale of the 1,666,667 shares of common stock being offered by itselling stockholders in this offering, assuming a public offering price of $15.00 per share, the mid-point of the range shown on the cover of this prospectus, the redemption of the 8% preferred stock and the repayment of the 8%

26

Use of proceeds

promissory notes,which we estimate that Messrs. Broadhurst, Burge, Holdren, Massaro and McCartney will receive a payment of approximately $43,800, $43,800, $875,000, $87,500 and $43,800, respectively.

We will retain broad discretion in the allocation of the net proceeds of this offering that are not used to redeem the 8% preferred stock, repay our outstanding 8% promissory notes and repay outstanding indebtedness, if any, under our credit agreement. We intend to use the balance of our net proceeds for general corporate purposes, including working capital. Should we determine to employ cash resourcespurposes.

Price range of common stock

Since October 13, 2004, our common stock has been trading on the NASDAQ National Market under the symbol “HURN.” The following table sets forth, on a per share basis and for the acquisition of complementary businesses or services,period indicated, the amounts availablehigh and low closing sales prices for general corporate purposes may be significantly reduced. Although we evaluate potential acquisitions inHuron’s common stock as reported by the ordinary course of business, we have no specific understandings, commitments or agreements with respect to any acquisition or investment at this time.NASDAQ National Market.

Until we use the net proceeds of this offering for general corporate purposes, we intend to invest the funds in short-term, investment-grade, interest-bearing securities. We cannot predict whether the proceeds invested will yield a favorable return.

27On August 26, 2005, the last reported sale price of our common stock as reported on the NASDAQ National Market was $24.59 per share. As of August 26, 2005, there were 72 holders of record of our common stock.

Dividend policy

On May 12, 2004, we declared a special dividend on each outstanding share of our common stock and 8% preferred stock payable to holders of record on May 25, 2004. We paid the special dividend on June 29, 2004. The 8% preferred stock participated on an as converted basis. The aggregate amount of the dividend was $1.25 million, or $0.09 per share of common stock and $22.18$9.64 per share of 8% preferred stock. The payment of the special dividend was funded by our available cash balance and by borrowing availability under our credit agreement, which we repaid the following day. Other than the special dividend, we have not declared or paid any dividends on our common stock since our inception and do not intend to pay any dividends on our common stock in the foreseeable future. We currently expect that we will retain our future earnings, if any, for use in the operation and expansion of our business. Future cash dividends, if any, will be at the discretion of our board of directors and will depend upon, among other things, our future operations and earnings, capital requirements and surplus, general financial condition, contractual restrictions and other factors the board of directors may deem relevant. In addition, our bank credit agreement restricts dividends by requiring $45 million of permanent equity capital, which is defined as the sum of paid-in capital and net income less any distributions.

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Capitalization

The following table sets forth our capitalization as of June 30, 2004:

For further information regarding the redemption of our 8% preferred stock and the repayment of our outstanding 8% promissory notes, see the section of this prospectus entitled “Use of proceeds.”

29

Capitalization

2005. The information set forth below should be read in conjunction with “Selected consolidated financial and other operating data,” “Management’s discussion and analysis of financial condition and results of operations” and our consolidated financial statements and related notes included elsewhere in this prospectus.

The outstanding share information as of June 30, 20042005 excludes 1,713,0411,415,129 shares of common stock issuable upon the exercise of outstanding stock options issued under our equity incentive plans, with a weighted average exercise price of $0.76$2.16 per share.

30

Dilution

Purchasers of our common stock in this offering will suffer an immediate and substantial dilution in net tangible book value per share. Dilution is the amount by which the offering price paid by the purchasers of our common stock exceeds the pro forma as adjusted net tangible book value per share of our common stock after the offering. Pro forma net tangible book value per share is determined at any date by subtracting our total liabilities from the total book value of our tangible assets and dividing the difference by the number of shares of our common stock deemed to be outstanding on the date the book value is determined after giving effect to a 1 for 2.3 reverse stock split of our Class A common stock and Class B common stock, which will occur prior to the consummation of this offering.

At June 30, 2004, we had a net tangible book value of $(0.2) million, or $(0.01) per share of common stock. After giving effect to adjustments relating to this offering as if they had occurred on June 30, 2004, our pro forma as adjusted net tangible book value at June 30, 2004 would have been $42.6 million, or $2.62 per share of common stock. This represents an immediate increase in net tangible book value to existing stockholders of $2.63 per share and an immediate dilution to new investors of $12.38 per share. The adjustments made to determine pro forma as adjusted net tangible book value per share are:

For further information regarding the redemption of our 8% preferred stock and the repayment of our outstanding 8% promissory notes, see the section of this prospectus entitled “Use of proceeds.”

The following table illustrates this per share dilution:

31

Dilution

The following table summarizes on a pro forma as adjusted basis, as of June 30, 2004, the differences between existing stockholders and new investors with respect to the number of shares of common stock purchased from us, the total cash consideration paid to us and the average price per share paid by existing stockholders and by new investors purchasing common stock in this offering, assuming a public offering price of $15.00 per share, the mid-point of the range shown on the cover of this prospectus (before deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us):

The discussion and tables above exclude 1,713,041 shares of common stock issuable upon the exercise of outstanding stock options issued under our equity incentive plans as of June 30, 2004, with a weighted average exercise price of $0.76 per share, and 194,419 shares available for future issuance under our equity incentive plans as of June 30, 2004. To the extent that any of our outstanding options are exercised there will be further dilution to new investors.

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Selected consolidated financial and other operating data

We have derived the following selected consolidated financial data as of the end of and for the period from March 19, 2002 (inception) to December 31, 2002 and as of and for the yearyears ended December 31, 2003 and 2004 from our audited consolidated financial statements, except for the pro forma data.statements. We have derived the following selected consolidated financial data for the six months ended June 30, 20032004 and 2005 and as of June 30, 2005 from our unaudited interim consolidated financial statements. The historical consolidated statements of operations and other operating data for the six months ended June 30, 2004 from our unaudited interim consolidated financial statements, except for2005 includes the pro forma data.results of operations and other operating data of Speltz & Weis LLC since May 9, 2005, its date of acquisition. In the opinion of management, this information containsthe unaudited selected financial data presented below under the headings “Consolidated Statement of Operations Data” and “Consolidated Balance Sheet Data” reflect all adjustments consisting only of a normal recurring accruals,nature necessary for a fair presentation ofto present fairly our results of operations and financial position for such periods.and as of the periods presented. The information set forth below is not necessarily indicative of the results of future operations and should be read in conjunction with “Management’s discussion and analysis of financial condition and results of operations” and the consolidated financial statements and related notes included elsewhere in this prospectus.

3325

Selected consolidated financial and other operating data