NEW YORK ( TheStreet) -- Dollar General ( DG) was among several companies that announced common stock offerings Thursday, sending shares lower in the premarket session.

Dollar General priced an offering of 26 million shares of common stock at $27 per share. The shares are being sold by certain existing shareholders rather than the company, so Dollar General will not receive any proceeds from the sale. Underwriters were granted the option to purchase up to an additional 3.9 million shares to cover overallotments.

Northern Oil & Gas ( NOG) said it will offer 5 million shares of common stock priced at $15 per share for gross proceeds of $75 million. Northern Oil said it plans to use the net proceeds from the offering to continue to pursue acquisitions, to fund its accelerated drilling program, to repay short-term borrowings and for other working capital purposes. Underwriters were granted the option to purchase up to an additional 750,000 shares to cover overallotments.

Medical Properties Trust ( MPW) priced an offering of 26 million shares of common stock at $9.75 per share. Net proceeds of approximately $242.2 million will be used to fund its concurrent tender offer for any and all of the outstanding 6.125% exchangeable senior notes due 2011 of the company's MPT Operating Partnership. Underwriters were granted the option to purchase up to an additional 3.9 million shares to cover overallotments.

Kilroy Realty ( KRC) said it plans to raise approximately $260.6 million in net proceeds from an offering of 8 million share of common stock, priced at $34 per share. Proceeds from the offering to finance the approximately $237 million purchase price of an office building and attached parking structure in San Francisco. Underwriters were granted the option to purchase up to an additional 1.2 million shares to cover over-allotments.

The Princeton Review ( REVU) announced an offering of 14 million shares of common stock priced at $3 per share, saying it expects gross proceeds of $42 million. Underwriters were granted the option to purchase up to an additional 2.1 million shares to cover overallotments.

Macerich ( MAC) priced an offering of 30 million shares of common stock at $41 per share, with net proceeds of $1.23 billion to be used to repay indebtedness as well as for general corporate purposes. Underwriters were granted the option to purchase up to an additional 4.5 million shares to cover overallotments.

Ameris Bancorp ( ABCB) priced an offering of 8.23 million shares of common stock at $9.50 per share. The company says it expects net proceeds of approximately $73.9 million. Underwriters were granted the option to purchase up to an additional 1.23 million shares to cover over-allotments.

-- Written by Robert Holmes in Boston.

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