The scrip-only buyout of Romarco means the number of Oceana Gold shares on issue will rise from 303.5million to 603million and the market will be watching closely for any share dilution in the future.
In what Oceana's chief executive Mick Wilkes has described in the past as ''the new Oceana Gold'', shareholders of the two Toronto-listed companies voted yesterday, separately, in favour of the amalgamation.
Romarco had a market capitalisation of $NZ996.9million, at the time of the offer, plus had $C254million ($NZ300.7million) cash in hand.
Oceana expects that once Romarco's flagship Haile gold mine in South Carolina gets into production, the company will be producing more than 540,000oz gold in 2017.
For 2015, Oceana expects to produce between 295,000oz to 335,000oz.
Romarco shareholders voted by a margin of 79.67% of votes cast, representing 81.70% of shares capable of being voted, while the issuance of the shares by Oceana was approved by 99.77% of votes cast, representing 64.19% of shares capable of being voted.
Mr Wilkes said support from Oceana's strong balance sheet, plus its development and operating expertise, would bring the Haile mine in Lancaster County through the construction period and into production.
It would further diversify Oceana's global production profile and cement Oceana ''as the low-cost gold producer globally''.
''Through our transaction with Romarco and with the addition of the Haile gold mine, Oceana Gold will enhance its already solid foundation of high margin, high quality operating assets,'' Mr Wilkes said in a statement yesterday.