ARJ Arch Chemicals

Levi & Korsinsky notifies investors of Arch Chemicals, Inc. ("Arch Chemicals" or the "Company") (NYSE: ARJ) of claims of breaches of fiduciary duty and other violations of state law against the Board of Directors of the Company in connection with the sale of the Company to Lonza Group Ltd. (SIX: LONN). Under the terms of the transaction, Arch Chemicals shareholders will receive $47.50 for each share of Arch Chemicals stock they own. The transaction has a total approximate value of $1.4 billion. A complaint was filed in Connecticut state court.

Click here to learn how to join the action: http://www.zlk.com/arch-chemicals-arj, or call: 877-363-5972.

The claims concern whether the Arch Chemicals Board of Directors breached their fiduciary duties to Arch Chemicals stockholders by failing to adequately shop the Company before entering into this transaction and whether Lonza Group Ltd. is underpaying for Arch Chemicals shares, thus unlawfully harming Arch Chemicals stockholders.

If you own common stock in Arch Chemicals and wish to obtain additional information, please contact Joseph E. Levi, Esq. either via email at jlevi@zlk.com or by telephone at (212) 363-7500, toll-free: (877) 363-5972, or visit http://www.zlk.com/arch-chemicals-arj.html.

Levi & Korsinsky is a national firm with offices in New York, California and Washington D.C. The firm has extensive expertise in prosecuting investor securities litigation involving financial fraud and represents investors throughout the nation, concentrating its practice in securities and shareholder litigation. The attorneys at Levi & Korsinsky have been appointed by numerous courts throughout the country to serve as lead counsel on behalf of shareholders in major litigations involving mergers and acquisitions. For more information, please feel free to contact any of the attorneys listed below. Attorney advertising. Prior results do not guarantee similar outcomes.

CONTACT: Levi & Korsinsky, LLP Joseph Levi, Esq. Eduard Korsinsky, Esq. 30 Broad Street - 15th Floor New York, NY 10004 Tel: (212) 363-7500 Toll Free: (877) 363-5972 Fax: (212) 363-7171 www.zlk.com