Among the companies with shares expected to actively trade in Thursday's session are Pozen Inc. (POZN), Titan Machinery Inc. (TITN) and Conn's Inc. (CONN).

Sanofi (SNY) and Pozen have signed a license agreement for the commercialization of Pozen's aspirin therapies, which are being developed to reduce gastric ulcers for cardiovascular patients. Pozen shares rose 13% to $6 premarket.

Conn's Inc.'s (CONN) fiscal second-quarter profit rose 65% as furniture and mattress sales led strong revenue growth, helping to mask weakness in the credit segment. However, earnings missed expectations. Shares fell 13% to $59.70 premarket.

Titan Machinery Inc.'s (TITN) fiscal-second-quarter profit dropped 26% as the agricultural and construction-equipment retailer logged higher costs that offset broad revenue growth, and warned that the back half of the year would be challenging. Titan also lowered its fiscal-year outlook. Shares fell 7.3% to $15.90 premarket.

Chelsea Therapeutics (CHTP) said the U.S. Food and Drug Administration has accepted its resubmitted new drug application for its lead investigational drug candidate Northera. An FDA decision on Northera to treat a sudden drop in blood pressure that occurs while standing is expected in February. Shares rose 5.2% to $3.25 premarket.

FuelCell Energy Inc.'s (FCEL) fiscal third-quarter loss narrowed as the power-equipment maker recorded better-than-expected revenue growth and improved margins. Shares rose 16% to $1.43 premarket.

Greif Inc.'s (GEF, GEFB) fiscal third-quarter earnings rose 25% as the packaging company reported stronger margins and as higher containerboard selling prices and volumes boosted revenue. Class A shares fell 4.3% to $53.50 premarket as results missed analyst expectations.

Wireless technology company InterDigital Inc. (IDCC) on Wednesday said the U.S. International Trade Commission will review a decision striking down the company's patent-infringement claims against three device makers. InterDigital's shares were up 3% to $38.38 premarket, amid investor hopes that the commission could reverse a June decision by an administrative law judge regarding its claims against Nokia Corp. (NOK, NOK1V.HE), Huawei Technologies Co. and ZTE Corp. (ZTCOY, 0763.HK, 000063.SZ). The judge found that one of InterDigital's patents was infringed but that the patent was invalid, and that another six patents weren't violated.

Construction-materials maker Louisiana-Pacific Corp. (LPX) agreed on Tuesday to acquire Ainsworth Lumber Co. (ANS.T) in a roughly $1.1 billion deal expected to help it capitalize on the U.S. housing recovery and improve its access to Asia. The proposed deal values Ainsworth at $3.76 Canadian dollars (US$3.59) a share, a 30% premium to its Tuesday closing price. Louisiana-Pacific shares rose 10% to $16.80 premarket.

Matador Resources Co. (MTDR) said an offering of 8.5 million of its shares priced at a 3.4% discount to Wednesday's close. Shares fell 1.2% to $15.60 premarket.

Rigel Pharmaceuticals Inc. (RIGL) plans to narrow its focus to three of its lead clinical programs, a decision that includes the elimination of 30 positions, or about 18% of the drug developer's workforce. Shares rose three cents to $3.25 premarket.

US Airways Group Inc. (LCC) reported its passenger traffic rose 5.6% in August amid increases across its domestic, Atlantic and Latin segments. Shares rose 1.1% to $16.99 premarket.

Walgreen Co.'s (WAG) August same-store sales rose a higher-than-expected 4.8% as the drugstore chain posted stronger sales growth in its pharmacy than in its front end. Shares rose 1.2% to $50.10 premarket.

 
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Alliant Techsystems Inc. (ATK) has agreed to buy sports optics company Bushnell Group Holdings Inc. for $985 million in cash from private-equity firm MidOcean Partners, a move that will broaden the defense-focused company's capabilities in commercial shooting sports and expand its portfolio of branded shooting-sports products.

Fitch Ratings raised its outlook on Best Buy Co. (BBY), saying the electronics retailer's efforts to cut costs and change its sales mix could stem its losses in coming years.

Jos. A. Bank Clothiers Inc.'s (JOSB) fiscal-second-quarter profit fell 38% as the company continued to post declining same-store sales, although gross margin improved as costs dropped.

LinkedIn Corp. (LNKD) agreed to sell a greater-than-expected $1.2 billion in stock late Wednesday, marking the largest public Internet company stock sale since Facebook Inc.'s (FB) debut. LinkedIn agreed to sell 5.4 million shares for $223 each.

Nordion Inc.'s (NDZ, NDN.T) fiscal third-quarter profit surged, thanks to the sale of one of its business units, while revenue and adjusted earnings beat Wall Street's expectations.

Madison Square Garden Co. (MSG) and Azoff Music Management unveiled plans to create an entertainment joint venture with music-industry veteran Irving Azoff as its chairman and chief executive.

Mitcham Industries Inc. (MIND) swung to a fiscal second-quarter loss as equipment-leasing revenue continued to decline.

Parkway Properties Inc. (PKY) has agreed to buy Thomas Properties Group Inc. (TPGI) for about $292 million in stock, a deal that allows the real-estate investment trust to expand its footprint in Houston and Austin.

Sigma Designs Inc.'s (SIGM) fiscal-second-quarter loss narrowed as the chip maker's expenses dropped, offsetting a decrease in revenue.

Tenneco Inc. (TEN) intends to close its ride performance plant in Gijon, Spain, and decomplex its ride performance plant in Sint-Truiden, Belgium, moves the automotive-parts maker said are needed to address weak macroeconomic conditions in Europe.

Write to Tess Stynes at tess.stynes@wsj.com

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