There's always the inherent risk when investing in stocks, especially in the OTC. I don't foresee an early dumping of shares by anyone given the below conditions that are spelled out in the 8K filing.
Conditions that must be met prior to release of shares
CEN
"In addition to certain document delivery requirements (e.g., financial statements and other corporate records), GrowLife will issue the Payment Shares only if it receives documentary evidence that a Canadian government agency has by contract, license, or otherwise granted specific rights to Sellers or CEN to grow, harvest, sell, import or export cannabis and cannabis bi-products in an amount not less than 1.3 million pounds of dried cannabis annually. If CEN is not granted the right to grow, harvest, and sell at least 1.3 million pounds, then OGI has the right to rescind the IPA or reduce the Payment Shares proportionately. This transaction is also conditioned upon the Company’s shareholders approving an increase in the Company’s authorized common stock at the February meeting of shareholders."
RXNB
The RXNB Payment Shares will be issued by the Company to WP and AJOA after OGI receives certain documentation from WP, AJOA, and RXNB required by the RXNB IPA, including current and historical financial statements, insurance policy information, and certificates of good standing. OGI has the right to rescind the transaction should the required documents not be delivered within sixty business days. The RXNB Payment Shares will not be issued unless the Company’s shareholders approve an increase in the Company’s authorized common stock at the February meeting of shareholders.