Upon quarterly rebalance, 11 stocks were added to the HMMJ portfolio

TORONTO – December 18, 2017 – Horizons ETFs Management (Canada) Inc. (“Horizons ETFs”) announced it has completed the quarterly rebalance of the constituent holdings of the Horizons Marijuana Life Sciences Index ETF (“HMMJ”) on December 15, 2017. As a result, 11 new holdings have been added to HMMJ’s portfolio.

HMMJ is the world’s first ETF that offers direct exposure to North American-listed securities that are involved with marijuana bioengineering and production. The HMMJ portfolio has expanded to include the following constituents:

Constituent Name Ticker Exchange Canntrust Holdings Inc. TRST Canadian Securities Exchange Delta 9 Cannabis Inc. NINE TSX Venture Exchange Emerald Health Therapeutics EMH TSX Venture Exchange Harvest One Cannabis Inc. HVST TSX Venture Exchange Hydropothecary Corp. THCX TSX Venture Exchange ICC International Cannabis Corp. ICC TSX Venture Exchange InMed Pharmaceuticals Inc. IN Canadian Securities Exchange Innovative Industrial Properties Inc. IIPR New York Stock Exchange Newstrike Resources Ltd. HIP TSX Venture Exchange Radient Technologies Inc. RTI TSX Venture Exchange WeedMD Inc. WMD TSX Venture Exchange

HMMJ is an index (or passively managed) ETF, which seeks to replicate, to the extent possible, the performance of the North American Marijuana Index (the “Index”), net of expenses. The Index is designed to provide exposure to the performance of a basket of North American publicly listed life sciences companies with significant business activities in the marijuana industry. The Index selects from a current universe of companies that have operations that may include one or more of biopharmaceuticals, medical manufacturing, distribution, bio-products and other ancillary businesses related to the marijuana industry.

“Cannabis has been one of the newest and fastest-growing asset classes of 2017, presently valued at approximately $23 billion,” said Steve Hawkins, President and Co-CEO of Horizons ETFs. “The expanded portfolio of HMMJ demonstrates how quickly this sector has evolved. It is now considered a long-term, domestic investment opportunity for Canadian investors.”

Rebalancing of the North American Marijuana Index occurs before the end of each calendar quarter. At that point, all stocks eligible for inclusion in the Index are weighted by their respective market capitalization. However, no single stock can exceed 10% of the weight of the index at the rebalance date.

In conjunction with the recently announced Index rebalance by the Index calculation agent (Solactive AG), HMMJ has also rebalanced the holdings of the ETF portfolio. The holdings of the ETF and their current portfolio weights are regularly updated on our website at www.HorizonsETFs.com/HMMJ.

It is important to note that HMMJ may not hold all of the constituent names in the Index. HMMJ’s manager, through the use of a stratified sampling strategy, may invest in securities that closely match the investment characteristics of the Index, and are consistent with the investment objective and strategy of the ETF.

About Horizons ETFs Management (Canada) Inc.

Horizons ETFs Management (Canada) Inc. is an innovative financial services company and offers one of the largest suites of exchange traded funds in Canada. The Horizons ETFs product suite includes a broadly diversified range of solutions for investors of all experience levels to meet their investment objectives in a variety of market conditions. Horizons ETFs currently has more than $8.7 billion of assets under management and 81 ETFs listed on the Toronto Stock Exchange. Horizons ETFs Management (Canada) Inc. is a member of the Mirae Asset Global Investments Group.

About Solactive (www.solactive.com)

Solactive AG is an innovative index provider that focuses on the development, calculation and distribution of tailor-made indices over all asset classes. The company was established in 2007 and is headquartered in Frankfurt, Germany. Over 350 international clients, including major investment banks, ETF providers and asset managers have embraced Solactive’s mutually attractive investment ideas. As at October 2017, more than 260 ETFs are linked to Solactive’s indices and over USD $100 billion is invested in products linked to indices calculated by Solactive.

For investor inquiries:

1-866-641-5739 (toll-free) or (416) 933-5745

info@horizonsetfs.com

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Olivia Fazekas

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Horizons ETFs Management (Canada) Inc.

(416) 601-2502

ofazekas@horizonsetfs.com