EXHIBIT 24

                               POWER OF ATTORNEY
        FOR SEC FILINGS ON FORMS ID, 3, 4, 5, 144, SCHEDULES 13D and 13G
                          IN RESPECT OF SECURITIES OF
                      ARCTURUS THERAPEUTICS HOLDINGS INC.

      The undersigned hereby constitutes and appoints each of Jeffrey Baumel and
Ilan Katz as his or her true and lawful attorneys-in-fact and agents, each with
full power of substitution and resubstitution for him or her in his or her name
and stead in any and all capacities, to sign and file for and on his or her
behalf, in respect of any acquisition, disposition or other change in ownership
of any Common Stock or derivative securities thereof of Arcturus Therapeutics
Holdings Inc. (the "Company"), the following:

      (i)    any Form ID to be filed with the Securities and Exchange Commission
             (the "SEC");

      (ii)   any Initial Statement of Beneficial Ownership of Securities on
             Form 3 to be filed with the SEC;

      (iii)  any Statement of Changes of Beneficial Ownership of Securities on
             Form 4 to be filed with the SEC;

      (iv)   any Annual Statement of Beneficial Ownership of Securities on
             Form 5 to be filed with the SEC;

      (v)    any Notice of Proposed Sale of Securities on Form 144 to be filed
             with the SEC;

      (vi)   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, including Schedules 13G
             and 13D; and

      (vii)  any and all agreements, certificates, receipts, or other documents
             in connection therewith. The undersigned hereby gives full power
             and authority to each attorney-in-fact to seek and obtain as the
             undersigned's representative and on the undersigned's behalf,
             information on transactions in the Company's securities from any
             third party, including brokers, employee benefit plan
             administrators and trustees, and the undersigned hereby authorizes
             any such person to release such information to the undersigned and
             approves and ratifies any such release of information. The
             undersigned hereby grants unto each attorney-in-fact and agent full
             power and authority to do and perform each and every act and thing
             requisite and necessary in connection with such matters and hereby
             ratifies and confirms all that any such attorney-in-fact and agent
             or substitute may do or cause to be done by virtue hereof. The
             undersigned acknowledges that:

             (i)  neither the Company nor any of such attorney-in-fact assumes
                  (i) any liability for the undersigned's responsibility to
                  comply with the requirement of the Securities Exchange Act of
                  1934, as amended (the "Exchange Act"), (ii) any liability of
                  the undersigned for any failure to comply with such
                  requirements or (iii) any obligation or liability of the
                  undersigned for profit disgorgement under Section 16(b) of the
                  Exchange Act; and

             (ii) this Power of Attorney does not relieve the undersigned from
                  responsibility for compliance with the undersigned's
                  obligations under the Exchange Act, including without
                  limitation the reporting requirements under Section 16 of the
                  Exchange Act. This Power of Attorney shall remain in full
                  force and effect until revoked by the undersigned in a signed
                  writing delivered to such attorney-in-fact.

                            [Signature Page Follows]


IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney.



Date:  August 15, 2019                /s/ Joseph Payne
                                      ----------------
                                      Name: Joseph Payne