.4
CERTIFICATION OF
PRINCIPAL
EXECUTIVE OFFICER
Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
I, P.
Peter Pascali,
certify that:
1.
I have reviewed this annual report on Form 40-F of PyroGenesis
Canada Inc.;
2.
Based
on my
knowledge,
this
report does
not contain
any untrue
statement
of
a
material fact
or omit
to state
a
material fact necessary
to make the
statements made,
in light of
the circumstances
under which such
statements
were made, not misleading with respect to the period covered
by this report;
3.
Based
on
my
knowledge,
the
financial
statements,
and
other
financial
information
included
in
this
report,
fairly
present in all
material respects
the financial condition,
results of operations
and cash flows
of the registrant
as of,
and for, the periods presented
in this report;
4.
The registrant's other certifying officer(s)
and I are responsible for establishing and maintaining
disclosure controls
and
procedures
(as
defined
in
Exchange
Act
Rules
13a-15(e)
and
15d-15e))
and
internal
control
over
financial
reporting (as defined in Exchange Act Rules 13a-15(f)
and 15d-15(f)) for the registrant and have:
a.
Designed such
disclosure controls
and procedures,
or caused
such disclosure
controls and
procedures to
be designed under our supervision, to ensure
that material information relating to the
registrant, including its
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period
in which this report is being prepared;
b.
Designed
such
internal
control
over
financial
reporting,
or
caused
such
internal
control
over
financial
reporting to be designed under our supervision,
to provide reasonable assurance regarding the
reliability of
financial
reporting
and
the
preparation
of
financial
statements
for
external
purposes
in
accordance
with
generally accepted accounting principles;
c.
Evaluated
the
effectiveness
of
the
registrant's
disclosure
controls
and
procedures
and
presented
in
this
report our
conclusions about
the effectiveness
of the
disclosure controls
and procedures,
as of
the end
of
the period covered by this report based on such evaluation;
and
d.
Disclosed in this
report any change
in the registrant's
internal control over
financial reporting that
occurred
during the registrant's most
recent fiscal year that
has materially affected, or is
reasonably likely to materially
affect, the registrant's internal control over financial
reporting; and
5.
The
registrant's
other
certifying
officer(s)
and
I
have
disclosed,
based
on
our
most
recent
evaluation
of
internal
control
over
financial
reporting,
to
the
registrant's
auditors
and
the
audit
committee
of
the
registrant's
board
of
directors (or persons performing the equivalent functions):
a.
All
significant
deficiencies
and
material
weaknesses
in
the
design
or
operation
of
internal
control
over
financial reporting
which are reasonably
likely to adversely
affect the
registrant's ability
to record, process,
summarize and report financial information; and
b.
Any fraud,
whether or
not material,
that involves
management or
other employees
who have
a significant
role in the registrant's internal control over financial reporting.
Date: March 31
st
, 2023
By:
Chief Executive Officer
(Principal Executive Officer)