[add info about financial reports, corporate annual reports, technical compliance
Publicly-traded companies in Canada have to file documents in the relevant securities commission. A securities commission is the regulatory body of a province that ensures companies comply with financial and other administrative requirements. You can find all documents filed with securities commissions in Canada after 1996 at SEDAR+.
YESAB https://yesab.ca/ & yesab file registry to see in-progress proposals https://yesabregistry.ca/
yukon water board: https://www.yukonwaterboard.ca/ & archive of water board documents: https://www.yukonwaterboard.ca/WATERLINE/index.htm
water boards, DFO