no surprise there. those shares are already in the money, so the company had no trouble selling another 375k shares:

Silver Standard Resources Inc. (Toronto:SSO.TO - News)(NasdaqGM:SSRI - News) reports that the underwriters of its recent public offering (the "Offering") have exercised, in part, their over-allotment option and will purchase an additional 375,713 common shares at US$17.00 per share. The option was granted pursuant to the Offering of 5.45 million common shares, at an offering price of US$17.00 per share, which closed on February 27, 2009. The gross proceeds from the exercise of the over-allotment option will total approximately US$6.4 million.

http://finance.yahoo.com/news/Silver...