They may be required to submit an annual update of any changes to ownership in the reservoir (they have not yet reflected the 10 per cent additional working interest) in order to be consistent with Canadian disclosure laws, since the operator is a Canadian-domiciled company. Besides which, the changes being proposed to Canadian disclosure would work out in DWOG's favour, by allowing more leeway in how their contingent resources are reported: http://osc.gov.on.ca/en/SecuritiesLaw_rule_20131017_51-101_rfc-disc-oil-gas.htm