REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

To the Shareholders of Main Sector Rotation ETF and Main
Thematic Innovation ETF and
Board of Trustees of Northern Lights Fund Trust IV

In planning and performing our audit of the financial
statements of Main Sector Rotation ETF and Main Thematic
Innovation ETF (the "Funds"), each a series of Northern Lights
Fund Trust IV, as of and for the year or period ended May 31,
2021, in accordance with the standards of the Public
Company Accounting Oversight Board (United States)
(PCAOB), we considered the Funds' internal control over
financial reporting, including controls over safeguarding
securities, as a basis for designing our auditing procedures for
the purpose of expressing our opinion on the financial
statements and to comply with the requirements of Form N-
CEN, but not for the purpose of expressing an opinion on the
effectiveness of the Funds' internal control over financial
reporting.  Accordingly, we express no such opinion.

The management of the Funds is responsible for establishing
and maintaining effective internal control over financial
reporting.  In fulfilling this responsibility, estimates and
judgments by management are required to assess the
expected benefits and related costs of controls.  A fund's
internal control over financial reporting is a process designed
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 (GAAP).  A fund's
internal control over financial reporting includes those
policies and procedures that (1) pertain to the maintenance
of records that, in reasonable detail, accurately and fairly
reflect the transactions and dispositions of the assets of the
fund; (2) provide reasonable assurance that transactions are
recorded as necessary to permit preparation of financial
statements in accordance with GAAP, and that receipts and
expenditures of the fund are being made only in accordance
with authorizations of management and trustees of the fund;
and (3) provide reasonable assurance regarding prevention or
timely detection of unauthorized acquisition, use or
disposition of a fund's assets that could have a material effect
on the financial statements.

Because of its inherent limitations, internal control over
financial reporting may not prevent or detect misstatements.
Also, projections of any evaluation of effectiveness to future
periods are subject to the risk that controls may become
inadequate because of changes in conditions, or that the
degree of compliance with the policies or procedures may
deteriorate.

A deficiency in internal control over financial reporting exists
when the design or operation of a control does not allow
management or employees, in the normal course of
performing their assigned functions, to prevent or detect
misstatements on a timely basis.  A material weakness is a
deficiency, or combination of deficiencies, in internal control
over financial reporting, such that there is a reasonable
possibility that a material misstatement of the Funds' annual
or interim financial statements will not be prevented or
detected on a timely basis.

Our consideration of the Funds' internal control over financial
reporting was for the limited purpose described in the first
paragraph and would not necessarily disclose all deficiencies
in internal control that might be material weaknesses under
standards established by the PCAOB.  However, we noted no
deficiencies in the Funds' internal control over financial
reporting and its operation, including controls over
safeguarding securities, that we consider to be a material
weakness as defined above as of May 31, 2021.

This report is intended solely for the information and use of
management and the Board of Trustees of the Funds and the
Securities and Exchange Commission and is not intended to
be and should not be used by anyone other than these
specified parties.

/s/ COHEN & COMPANY, LTD.

COHEN & COMPANY, LTD.
Cleveland, Ohio
July 30, 2021