By late morning, shares had slid 1.4% to $62.24.
The shares to be sold are currently held by Antero Resources Investment and Antero Resources Corp will receive no proceeds from the sale of the common stock. The selling stockholder has granted underwriters a 30-day option to purchase up to an additional 1.8 million shares.
The offering is expected to close on May 19, subject to customary closing conditions.
Barclays, Citigroup, Credit Suisse and JPMorgan are acting as joint book-running managers for the offering.
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