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Weight Watchers International (WW - Get Report) said Friday that effective Sept. 29, it will legally change its name to WW International as part of a rebranding.

The New York wellness and weight-management company said it rebranded to WW last September and began trading on the Nasdaq under the symbol WW in April "to more accurately align with the company's corporate identity."

"The upcoming change to the company's legal name is the next step in the company's evolution and will make its branding consistent across all audiences," the company said in a statement.

In August, WW said its quarterly earnings came in at 78 cents a share, a 23% slide from the year-earlier period but well ahead of the Street consensus forecast of 65 cents.

Revenue was also lower, falling 10% to $369 million and missing analysts' estimate of $376.1 million as studio memberships and product sales offset stronger gains in online subscriptions.

Looking ahead, the company forecast full-year sales of at least $1.4 billion and earnings in the region of $1.55 to $1.70 a share, up from a prior forecast of $1.25 to $1.50, after end-of-period subscribers increased 1.5% to a second-quarter record of 4.6 million.

Shares were up slightly to $134.13.