Mainstream Minerals Announces Closing of Private Placement

Toronto, Ontario--(Newsfile Corp. - January 16, 2019) - Mainstream Minerals Corporation (the 'Company') announces that it has closed its previously announced private placement for aggregate gross proceeds of $500,000 through the issuance of 50,000,000 common shares ('Common Shares') of the Company at a price of $0.01 per Common Share (the 'Offering').

The transaction constituted a related party transaction within the meaning of Multilateral Instrument 61-101 ('MI 61-101') as an insider of the Company subscribed for an aggregate of 2,750,000 Common Shares pursuant to the Offering. The Company is relying on the exemptions from the valuation and minority shareholder approval requirements of MI 61-101 contained in sections 5.5(b) and 5.7(1)(a) of MI 61-101, as the fair market value of the participation in the Offering by the insider does not exceed 25% of the market capitalization of the Company, as determined in accordance with MI 61-101. The Company did not file a material change report in respect of the related party transaction at least 21 days before the closing of the Offering, which the Company deems reasonable in the circumstances in order to complete the Offering in an expeditious manner.

All Common Shares issued in connection with the Offering are subject to a statutory hold period of four months plus a day from the date of issuance in accordance with applicable securities legislation.

For further information, please contact:

Lisa McCormack President & Chief Executive Officer Tel: 416-361-2515 Email: lmccormack@irwinlowy.com

This news release contains certain 'forward-looking information' within the meaning of applicable securities law. Forward looking information is frequently characterized by words such as 'plan', 'expect', 'project', 'intend', 'believe', 'anticipate', 'estimate', 'may', 'will', 'would', 'potential', 'proposed' and other similar words, or statements that certain events or conditions 'may' or 'will' occur. These statements are only predictions. Forward-looking information is based on the opinions and estimates of management at the date the information is provided, and is subject to a variety of risks and uncertainties and other factors that could cause actual events or results to differ materially from those projected in the forward-looking information. For a description of the risks and uncertainties facing the Company and its business and affairs, readers should refer to the Company's Management's Discussion and Analysis. The Company undertakes no obligation to update forward-looking information if circumstances or management's estimates or opinions should change, unless required by law. The reader is cautioned not to place undue reliance on forward-looking information.

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