AUSTIN, Texas (AP) -- Network management software maker SolarWinds Inc. said Monday that the underwriters of a secondary public offering have fully exercised their overallotment option.

The 30-day option allowed the underwriters to buy an additional 1.8 million shares from certain selling stockholders at $18.75 per share. The price was the same as that for the public offering of 12 million shares.

SolarWinds shares closed Friday at $19.85.