Early movers: X, MLM, GM, SNE, BA, APP, SNE & more

Traders work on the floor of the New York Stock Exchange.
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Traders work on the floor of the New York Stock Exchange.

Check out which companies are making headlines before the bell:

General Motors—The automaker announced four more safety recalls for a variety of issues, totaling about 428,000 vehicles in the United States. Separately, attorney Kenneth Feinberg will announce details of GM's compensation plan for ignition switch crash victims later this morning.

Mannkind–The company received FDA approval for its inhalable diabetes treatment Afrezza. The approval comes three years after the FDA first asked for additional studies on the drug's effects.

Yahoo–The stock was upgraded to "overweight" from "neutral" at Piper Jaffray, with analyst Gene Munster saying the company's stake in Alibaba is undervalued at current levels.

GoProThe stock is sharply higher in pre-market trading once again, after jumping in each of its first two days of trading last week. GoPro went public at $24 per share and closed Friday at $35.76.

Michael Kors–The luxury goods retailer has hired Tiffany senior vice president Stephane Lafay as president of its Asian operations.

Martin Marietta Materials– The stock will replace U.S. Steel in the S&P 500, effective after the market close on Tuesday, July 1. U.S. Steel will take Martin Marietta's place in the S&P MidCap 400.

Boeing–The aerospace giant and rival Airbus are among the bidders for a $1.4 billion South Korean aircraft order, according to Reuters. South Korean is planning to buy four refueling tanker aircraft.

Sony–Sony is predicting its TV business will be profitable this fiscal year, even after a decade of losing money. A Sony executive said the division should be able to operate in the black even if it does not reach its sales goals.

American Apparel–The company has adopted a so-called "poison pill", as it squares off with ousted chief executive and founder Dov Charney over control of the retailer.

By CNBC's Peter Schacknow

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