POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby
constitutes and appoints each of Mario C. Ventresca, Jr.
and Lisa M. Most as the undersigned's true and lawful
attorney-in-fact to:

(1) execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or trustee of
Pennsylvania Real Estate Investment Trust (the "Company"),
Forms 3, 4, and 5 in accordance with Section 16(a) of
the Securities Exchange Act of 1934 and the rules
thereunder, as amended, and any other forms or reports
the undersigned may be required to file in connection
with the undersigned's ownership, acquisition, or
disposition of securities of the Company;

(2) do and perform any and all acts for and on behalf
of the undersigned which may be necessary or desirable
to complete and execute any such Form 3, 4, or 5, or
other form or report (and any amendments thereof) and
timely file such form or report with the United States
Securities and Exchange Commission and any stock exchange
or similar authority; and

(3) take any other action of any type whatsoever in
connection with the foregoing which, in the opinion of
the attorney-in-fact, may be of benefit to, in the best
interest of, or legally required by, the undersigned, it
being understood that the documents executed by the
attorney-in-fact on behalf of the undersigned pursuant
to this Power of Attorney shall be in such form and shall
contain such information as the attorney-in-fact may
approve in the attorney-in-fact's discretion.

The undersigned hereby grants to each attorney-in-fact
full power and authority to do and perform any and every
act and thing whatsoever requisite, necessary, or proper
to be done in the exercise of any of the rights and
powers herein granted, as fully to all intents and
purposes as the undersigned might or could do if
personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that
each attorney-in-fact, or the attorney-in-fact's
substitute or substitutes, shall lawfully do or cause
to be done by virtue of this power of attorney and the
rights and powers herein granted. None of the foregoing
attorneys-in-fact shall incur any liability to the
undersigned for acting or refraining from acting under
this Power of Attorney, except for such attorney's own
willful misconduct or gross negligence. The undersigned
acknowledges that each of the foregoing attorneys-in-fact,
in serving in such capacity at the request of the
undersigned, is not assuming, nor is the Company assuming,
any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and
effect until the undersigned is no longer required to
file Forms 3, 4, and 5 with respect to the undersigned's
holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a
signed writing delivered to each attorney-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this
Power of Attorney to be executed as of this
6th day of February, 2020.


By: /s/ Michael J. DeMarco
Name:  Michael J. DeMarco