Vancouver, British Columbia – December 8, 2020 – Mosaic Minerals Corp. (“Mosaic” or the
“Company”) (CSE: MOC) is very pleased to remind its shareholders that effective November 16, 2020the
Company’s common shares were listed and are now trading on the Canadian Securities Exchange (the
“CSE”) under the ticker symbol “MOC.C”.

About Mosaic Minerals Corporation

Mosaic Minerals Corp., founded in 2018 is a Canadian mineral exploration company focused on
unlocking the potential of former Stellar AfricaGold Inc. “Stellar” Opawica Gold Project (“Opawica”)
which islocated in Québec’s renowned and very prolific Chibougamau mining district, Nord-du-Québec,
within the famous Abitibi Greenstone Belt.

Mosaic is gold-focused concentrating its exploration efforts where the Company’s growth potential is
the strongest. After incorporation Mosaic acquired Stellar’s Opawica project in a 100% share deal.
Mosaic then completed a Plan of Arrangement with Stellar establishing a shareholder base of more
than 1,000 new Mosaic shareholders. Since the acquisition Mosaic has actively explored Opawica
completing its Phase I exploration program at the end of 2019 with results that warrant advancing with
a Phase II program.

The Opawica Gold Project

Opawica is comprised of two claim blocks, the Philibert I and the Opawica North,located a few
kilometers East and in the structural strike of the Nelligan Iamgold/Vanstar project. Surface sampling
of the Philbert-I block showing by Laurentia Exploration during the 43-101 Technical Report field visit
confirmed Stellar’s and other historical results returning gold grades of up to 9.24 g/t Au in some
channel sampling of quartz injected structures. The gold mineralization is associated with millimetric to
metric wide quartz veins structure cutting through the Obatogamau rock of Philibert-I block. These
veins are observed across a 50-meter-long rock exposure and strike N 1100
. Quartz veins contain
tourmaline and pyrite and lies within an epidote-iron carbonates alteration envelope and most
importantly, the structure is open laterally and vertically.

In December 2018, Mosaic mandated Dynamic Discovery to perform a resistivity and Induced
Polarization (IP) coverage of the Philbert Block to increase the understanding of the geophysical
characteristics of the Philbert-I gold showing. In conclusion, the geophysical response of the gold
mineralization found within the property was better characterised, assisting with the selection of
priority exploration targets. A total of 200 individual IP anomalies, further grouped as 47 chargeable
lineaments, were defined. Among them, 11 axes are considered with higher potential to relate to
mineralized occurrences and constitute high priority drilling targets

About Mosaic’s Management
Mosaic benefits from a solid board of directors and strong executive management. Its members have
documented business histories, successful exploration backgrounds, impressive histories of mine
discoveries in Canada, Africa and South America, and established records of corporate success.

In 2012 Mosaic President and CEO Maurice Giroux while he was CEO of Stellar AfricaGold Inc. lead the
team that made the Monster Lake – Zone 325 high grade gold discovery which became the foundation
project of Toma Gold Inc., was subsequently optioned by Iamgold Corp. At the same time Iamgold
optioned the Nelligan Project that was awarded “Discovery of the Year” at the Xplor Mining convention
in Montreal in 2019.

Mosaic Executive VP and CFO John Cumming was formerly the Executive VP and CFO of West African
gold explorer Merrex Gold Inc. In 2008 Mr. Cumming negotiated Merrex’s exploration Joint Venture with
Iamgold Corporation which in 2014 discovered the Diakha gold deposit in West Mali. In 2016 he led
both the Merrex negotiating team and the transaction legal team that successfully negotiated and
concluded the sale of Merrex to Iamgold Corporation in a $43 million share takeover deal. For additional
information on board of directors and management, see Mosaic’s website at

Maurice Giroux, Chief Executive Officer commented “Mosaic’s recent stock exchange listing on the CSE
represents a significant milestone towards enhancing shareholders’ value. I want to offer a special
thanks to our shareholders for their continued support and confidence, and to our team and advisors
for their efforts. It is time now to resume work on the Opawica project. Mosaic is preparing a Stage I
drilling program for early winter 2021 on Philbert I’s best targets and an IP survey will be done over
Opawica North block.”

Hybrid Financial Marketing Agreement
Mosaic has retained Hybrid Financial Ltd. (“Hybrid”) to provide marketing services to Mosaic to
improve market and brand awareness for Mosaic and to broaden the Mosaic’s reach within the
investment community. Hybrid has agreed to comply with all applicable securities laws and the
policies of the CSE in providing its services. Hybrid’s engagement is for an initial period of six months.
Hybrid will be paid a monthly fee of $21,000 plus applicable taxes for the six-month term.

The technical content of this press release has been reviewed and approved by Éric Allard, an
independent consultant and a Qualified Person as defined in NI 43-101.

On Behalf of the Board
Maurice Giroux BSc
President & CEO
Contact: Maurice Giroux at 1-514-952-5709