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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

For the quarterly period ended November 30, 2010.

or

For the transition period from                              to                             

Commission file number 0-17988

Neogen Corporation

(Exact name of registrant as specified in its charter)

620 Lesher Place

Lansing, Michigan 48912

(Address of principal executive offices, including zip code)

(517) 372-9200

(Registrant’s telephone number, including area code)

N/A

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file reports), and (2) has been subject to such filing requirements for the past 90 days.    YES  x    NO  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ¨    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer (see definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act):    YES  ¨    NO  x

As of December 1, 2010, there were 23,115,000 shares of Common Stock outstanding.

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NEOGEN CORPORATION AND SUBSIDIARIES

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PART I – FINANCIAL INFORMATION

NEOGEN CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

See notes to interim consolidated financial statements

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NEOGEN CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

See notes to interim consolidated financial statements

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NEOGEN CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF EQUITY (UNAUDITED)

See notes to interim consolidated financial statements

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NEOGEN CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

See notes to interim consolidated financial statements

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NEOGEN CORPORATION AND SUBSIDIARIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

1. BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (generally accepted accounting principles) for interim financial information and with the instructions to Form 10-Q and Article 10 Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation have been included. The results of operations for the three and six month periods ended November 30, 2010 are not necessarily indicative of the results to be expected for the fiscal year ending May 31, 2011. For more complete financial information, these consolidated financial statements should be read in conjunction with the May 31, 2010 audited consolidated financial statements and the notes thereto included in the Company’s annual report on Form 10-K for the year ended May 31, 2010.

2. INVENTORIES

Inventories are stated at the lower of cost, determined on the first-in, first-out method, or market. The components of inventories follow:

3. NET INCOME PER SHARE

The calculation of net income per share follows:

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4. SEGMENT INFORMATION

The Company has two reportable segments: Food Safety and Animal Safety. The Food Safety segment produces and markets diagnostic test kits and related products used by food producers and processors to detect harmful natural toxins, foodborne bacteria, allergens and levels of general sanitation. The Animal Safety segment is primarily engaged in the production and marketing of products dedicated to animal health, including a complete line of consumable products marketed to veterinarians and animal health product distributors and provides genetic identification services. Additionally, the Animal Safety segment produces and markets rodenticides and disinfectants to assist in control of rodents and disease in and around agricultural, food production and other facilities.

Segment information as of and for the three months ended November 30, 2010 and 2009 follows:

Segment information as of and for the six months ended November 30, 2010 and 2009 follows:

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5. EQUITY COMPENSATION PLANS

Options are generally granted under the employee and director stock option plan for 5 years and become exercisable in varying installments. Certain non-qualified options are granted for 10 year periods. A summary of stock option activity during the six months ended November 30, 2010 follows:

During the three and six month periods ended November 30, 2010 and 2009 the Company recorded $564,000 and $525,000 and $1,240,000 and $1,050,000, respectively of compensation expense related to its share-based awards.

The weighted-average fair value of stock options granted during 2011 and 2010, estimated on the date of grant using the Black-Scholes option pricing model was $8.60 and $6.35 respectively. The fair value of stock options granted was estimated using the following weighted-average assumptions.

The Company has 11,250 outstanding warrants that are exercisable for common stock. The warrants have lives of 5 years and were expensed at fair value upon issuance.

The Company has an Employee Stock Purchase plan that provides for employee stock purchases at a 5% discount to market. The discount is expensed as of the date of purchase.

6. NEW ACCOUNTING PRONOUNCEMENTS

Recent ASU’s issued by the FASB and guidance issued by the SEC did not, or are not believed by management to, have a material effect on the Company’s present or future consolidated financial statements.

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7. BUSINESS AND PRODUCT LINE ACQUISITIONS

On December 1, 2009, the Company purchased the BioKits food safety business of Gen-Probe Incorporated. Consideration for the purchase, which was determined through arms length negotiations, approximated $6.5 million in cash and the assumption of trade accounts payable of $175,000. The preliminary allocation of the purchase price included net current assets of $770,000, fixed assets $163,000 and intangible assets of $5,742,000. The acquired business operates as a unit of Neogen’s food safety division. Principal products include allergen test kits.

On April 1, 2010, Neogen Corporation acquired GeneSeek, Inc. of Lincoln, Nebraska, a leading commercial agricultural genetic laboratory. GeneSeek’s technology employs high-resolution DNA genotyping for identity and trait analysis in a variety of important animal and agricultural plant species. Consideration for the purchase was $13,800,000 in cash and secondary payment obligations of up to $7,000,000. The preliminary allocation of the purchase price included accounts receivable of $1,923,000, inventory of $1,212,000, fixed assets of $847,000, current liabilities of $600,000, deferred tax liabilities of $2,050,000, secondary payment liabilities of $3,583,000, based upon future operating results of the GeneSeek business until and is payable yearly over a three year measurement period, and the remainder to goodwill and other intangible assets (with estimated lives of 5-20 years). The secondary payment was measured at fair value, and is considered a level 3 fair value measurement under ASC 820-Fair Value Measurement and Disclosure, as it was based on unobservable inputs and involves management’s judgment. The Company recorded a charge within other income (expense) of approximately $400,000 for the six months ended November 30, 2010, representing the increase in fair value of the secondary payment liability. As of November 30, 2010, the balance of the secondary payment liability recorded was approximately $3,933,000. The acquisition will be integrated into the Animal Safety segment and is expected to be a strong synergistic fit.

8. LONG TERM DEBT AND LIABILITIES

The Company maintains a financing agreement with a bank (no amounts drawn at November 30, 2010 or May 31, 2010) providing for an unsecured revolving line of credit of $10,000,000. The interest rate is at LIBOR plus 100 basis points (rate under terms of the agreement was 1.25% at November 30, 2010). Financial covenants include maintaining specified levels of tangible net worth, debt service coverage, and funded debt to EBITDA, each of which the Company was in compliance with at November 30, 2010.

9. COMMITMENTS AND CONTINGENCIES

The Company is involved in environmental remediation and monitoring activities at its Randolph, Wisconsin manufacturing facility and accrues for related costs when such costs are determined to be probable and estimable. The Company is currently expensing annual costs of remediation of approximately $90,000. The Company’s estimated liability for this expense of $916,000 at November 30, 2010 and May 31, 2010 is recorded within other long-term liabilities in the consolidated balance sheet.

The Company is subject to certain legal and other proceedings in the normal course of business that, in the opinion of management, will not have a material effect on its future results of operations or financial position.

10. STOCK PURCHASE

In December 2008, the Company’s Board of Directors authorized a program to purchase, subject to market conditions, up to 750,000 shares of the Company’s common stock. As of November 30, 2010, 74,684 cumulative shares had been purchased in negotiated and open market transactions for a total price, including commissions, of approximately $923,000. There were no purchases in fiscal year 2011 or 2010. Shares purchased under the program were retired.

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PART I – FINANCIAL INFORMATION

The information in this Management’s Discussion and Analysis of Financial Condition and Results of Operations contains both historical financial information and forward-looking statements. Neogen does not provide forecasts of future performance. While management is optimistic about the Company’s long-term prospects, historical financial information may not be indicative of future financial performance.

Safe Harbor and Forward-Looking Statements

Forward-looking statements, within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, are made throughout this Quarterly Report on Form 10-Q. For this purpose, any statements contained herein that are not statements of historical fact may be deemed to be forward looking statements. Without limiting the foregoing, the words “believes,” “anticipates,” “plans,” “expects,” “seeks,” “estimates,” and similar expressions are intended to identify forward-looking statements. There are a number of important factors, including competition, recruitment and dependence on key employees, impact of weather on agriculture and food production, identification and integration of acquisitions, research and development risks, patent and trade secret protection, government regulation and other risks detailed from time to time in the Company’s reports on file at the Securities and Exchange Commission, that could cause Neogen Corporation’s results to differ materially from those indicated by such forward-looking statements, including those detailed in this “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

In addition, any forward-looking statements represent management’s views only as of the day this Quarterly Report on Form 10-Q was first filed with the Securities and Exchange Commission and should not be relied upon as representing management’s views as of any subsequent date. While management may elect to update forward-looking statements at some point in the future, it specifically disclaims any obligation to do so, even if its views change.

Critical Accounting Policies and Estimates

The discussion and analysis of the Company’s financial condition and results of operations are based on the consolidated financial statements that have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires that management make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, management evaluates the estimates, including those related to receivable allowances, inventories, accruals and intangible assets. These estimates are based on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

There have been no material changes to the critical accounting policies and estimates disclosed in the Company’s Annual Report on Form 10-K for the fiscal year ended May 31, 2010.

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Results of Operations

Executive Overview

Neogen Corporation revenues increased by 25% in the second quarter to $43.9 million and by 28% to $86.9 million for the six-month period ended November 30, 2010 when compared to the prior year. Food Safety revenues increased by 16% and 21% in the quarter and in the six-month period ended November 30, 2010, respectively. Animal Safety revenues increased by 34% and 37% in the quarter and in the six-month period ended November 30, 2010, respectively. Exclusive of the revenues from the BioKits and GeneSeek acquisitions, and foreign currency effects overall revenues increased 10% and 13% in the second quarter and year-to-date periods, respectively. Gross margins decreased from 52.5% in the November 2009 quarter to 51.2% in the November 2010 quarter and decreased from 52.9% to 52.1% on a year-to-date basis. The decrease in gross margins was a principally result of less favorable product mix. Operating margins increased in the quarter and six-month periods from 20.5% to 21.9% and from 21.0% to 22.1% respectively. The gains were the result of growth leverage and acquisitions as well as continuing cost control efforts.

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Revenues

Three and Six Months Ended November 30, 2010 Compared to Three and Six Months Ended November 30, 2009

Food Safety revenues increased 16% in the second quarter and 21% in the first six months of FY-11. Sales of Natural Toxin, Allergen and Drug Residue products increased by 19% in the quarter and by 21% year-to-date in comparison with FY-10. Exclusive of the BioKits acquisition, revenues increased by 10% and 15% in the quarter and six month periods, in comparison with the same periods of the prior year. Mycotoxin second quarter revenue growth increased by 3% and 17% in the six month period, with difficult comparisons to FY-10, in which much of the United States had cool and often wet weather conditions during the summer months and fall harvest seasons resulting in a spike in the sales of these products. Revenues from Food Allergen tests continued their recent trend of growth with an overall increase of 87% in the second quarter and 92% in the six months ended November 2010 with strong organic growth combined with the effect of the acquisition of the BioKits product line in December 2009. Drug residue test kits revenue increased 11% in the quarter and 1% in the first six months of FY-11 as revenues were affected by the strength of the US Dollar in foreign markets. Bacteria and General Sanitation product revenues increased by 14% in the quarter and increased by 18% in the first six months of FY-11 with more Soleris capital equipment placements in the current year. Dehydrated Culture Media and Other product revenues increased by 11% and 26% in the quarter and in the six-month periods respectively. These revenue increases were broad based and continued a trend from the prior quarters.

Animal Safety revenues increased by 34% in the second quarter and 37% in the six months ended November 30, 2010 in comparison with the prior year. Excluding the revenues of the GeneSeek acquisition in April 2010, Animal Safety revenues increased 7% in both the quarter and the first six months of FY-2011. Life Sciences and Other

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revenue increased by 9% in both the quarter and six months respectively. Revenue increases were broad based with increases from existing customers and new key accounts. Rodenticide and Disinfectant product revenues increased by 13% in the quarter and by 8% on a year-to-date basis. Rodenticide and Disinfectant revenues growth included strong increases in the agronomics segment and a well received fall rodenticide program. Veterinary Instrument and Other product revenues increased by 2% and 7% in the quarter and six months respectively in comparison with prior year. Increases were due to strong OEM and specialty needle revenues, which rebounded from a slow first quarter to achieve 93% growth in the second quarter.

Gross margins decreased from 52.5% to 51.2% in the second quarter of FY-11 and from 52.9% to 52.1% in the first six months of FY-11. This resulted principally from changes in product mix that included a lower percentage of diagnostic products in relation to overall revenues.

Operating margins in the second quarter increased from 20.5% to 21.9% and from 21.0% to 22.1% in the first six months of FY-11 as compared to the first six months of FY-10. These increases resulted from increased operating leverage and continuing cost controls. Sales and marketing expenses as expressed as a percentage of revenues decreased from 18.2% to 17.1% in the second quarter and decreased from 18.3% to 17.3% on a year-to-date basis. The decrease in sales and marketing as a percentage of revenues is the direct effect of the acquisitions during the year that contributed revenue dollars without commensurate increase in distribution cost. General and administrative expenses decreased from 9.1% to 8.5% of revenues in the second quarter, and from 9.0% to 8.7% on a year to date basis principally as a result of operating leverage. The change in general and administrative expense, while an increase in absolute dollars of $523,000 in the quarter and $1,494,000 fiscal year-to-date, is due to the increased cost of compensation, employee stock options expense, amortization from acquired businesses and the cost of acquiring businesses with increased governmental licensing and regulatory affairs. Research expense, decreased $57,000 in absolute dollars in the second quarter and increased by $277,000 for the first six months of FY-11, decreased as a percent of revenues from 4.8% to 3.7% in the second fiscal quarter and from 4.7% to 4.0% in the six-month periods. While these expenses vary on a quarter to quarter basis depending on the timing of new projects and the completion of existing projects, management expects that research and development efforts will range between 4% to 5% in support of existing products and to increase the supply of future products.

Financial Condition and Liquidity

Proceeds of $4,871,000 were realized with the exercise of 481,000 stock options and warrants and the issuance of 9,000 shares under the Employee Stock Purchase Plan during the six months ended November 30, 2010. Despite increases in revenues, accounts receivable increased only $215,000 in the first six months of FY-11, due to continued strong collection efforts. Despite increased operations to support increased revenues, inventories decreased by $213,000 in the six-month period under regimented inventory reduction and control efforts. $19,559,000 of cash was generated from operations Inflation and changing prices do not generally have a material effect on operations. As of November 30, 2010, Cash and cash equivalents consisted of funds used to support current operations and certificates of deposit and top tier commercial paper with maturities of 90 days or less. Management believes that the Company’s existing cash balances at November 30, 2010, along with available borrowings under its credit facility and cash expected to be generated from future operations, will be sufficient to fund operating needs and acquisition activities for the foreseeable future. However, cash needs are contingent on future events many of which cannot be predicted. Accordingly, the Company may be required to issue equity securities or enter into other financing arrangements for a portion of its future financing needs.

PART I – FINANCIAL INFORMATION

The Company has interest rate and foreign exchange rate risk exposure and no long-term fixed rate investments or borrowings. Primary interest rate risk is due to potential fluctuations of exposure to interest rates for variable rate borrowings.

Foreign exchange risk exposure arises because the Company markets and sells its products throughout the world. It therefore could be affected by weak economic conditions in foreign markets that could reduce demand for its products. Additionally, revenues in certain foreign countries as well as certain expenses related to those revenues are transacted in currencies other than the U.S. Dollar. The Company’s operating results are primarily exposed to changes in exchange rates between the U.S. Dollar, the British Pound Sterling and the Euro. When the U.S. Dollar weakens against foreign currencies, the dollar value of revenues denominated in foreign currencies increases. When the U.S. Dollar strengthens, the opposite situation occurs. Additionally, previously recognized revenues in the course of collection can be affected positively or negatively by changes in exchange rates. The Company uses derivative financial instruments to help manage the economic impact of fluctuations in certain currency exchange rates. These contracts are adjusted to fair value through earnings.

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Neogen has assets, liabilities and operations outside of the United States that are located in Scotland, Brazil and Mexico where the functional currency is the British Pound Sterling, Brazilian Real and Mexican Peso respectively. The Company’s investment in its foreign subsidiaries are considered long-term.

PART I – FINANCIAL INFORMATION

Evaluation of Disclosure Controls and Procedures

An evaluation of the effectiveness of the design and operation of the Company’s disclosure controls and procedures as of November 30, 2010 was carried out under the supervision and with the participation of the Company’s management, including the Chairman & Chief Executive Officer and the Vice President & Chief Financial Officer (“the Certifying Officers”). Based on the evaluation, the Certifying Officers concluded that the Company’s disclosure controls and procedures are effective.

Changes in Internal Controls Over Financial Reporting – There was no change to the Company’s internal control over financial reporting during the quarter ended November 30, 2010 that materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting. For purposes of this evaluation, the impact of the acquisition of GeneSeek, Inc. which closed on April 1, 2010, on our internal controls over financial reporting has been excluded.

PART II – OTHER INFORMATION

The Company is subject to certain legal and other proceedings in the normal course of business. In the opinion of management, the outcome of these matters will not have a material effect on its future results of operations or financial position.

(a) Exhibit Index

Items 1A, 2, 3, 4, and 5 are not applicable or removed or reserved and have been omitted.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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