CONTACT: Rod Poland, Director of Corporate Communications, 517/372-9200

LANSING, Mich., Nov. 12, 2009 — Neogen Corporation (NASDAQ: NEOG) has been selected to ring the closing bell of the NASDAQ Stock Market on Friday, Nov. 13, to celebrate Neogen’s 20th anniversary of being listed on the market.

“It’s my honor to ring the bell on behalf of the countless many who have made Neogen’s success possible,” said James Herbert, Neogen’s chief executive officer and chairman. “Neogen has come a long way in the 20 years since our initial offering, and we see a world of opportunity still ahead for us.”

Neogen rang the opening bell for the NASDAQ market five years ago at about this same time. During the five-year span, the company’s revenues have increased by 116% and its earnings have increased by 124%.

Neogen is included in NASDAQ’s top tier of companies, its Global Select Market. NASDAQ’s Global Select Market has the highest initial listing standards of any exchange in the world based on financial and liquidity requirements, and includes approximately 1,200 companies of the approximately 3,200 companies listed.

Neogen Corporation develops and markets products dedicated to food and animal safety. The company’s Food Safety Division markets dehydrated culture media, and diagnostic test kits to detect foodborne bacteria, natural toxins, genetic modifications, food allergens, drug residues, plant diseases and sanitation concerns. Neogen’s Animal Safety Division markets a complete line of diagnostics, veterinary instruments, veterinary pharmaceuticals, nutritional supplements, disinfectants, and rodenticides.

Certain portions of this news release that do not relate to historical financial information constitute forward-looking statements. These forward-looking statements are subject to certain risks and uncertainties. Actual future results and trends may differ materially from historical results or those expected depending on a variety of factors listed in Management’s Discussion and Analysis of Financial Condition and Results of Operations in the Company’s most recently filed Form 10-K.