Principal Exchange-Traded Funds 711 High Street, Des Moines, IA 50392 515 247 5111 tel

September 19, 2016

State Street Global Services

Channel Center

1 Iron Street

Boston, MA 02110

Attention: Julie D. Fisher, Managing Director

Re: Principal Exchange-Traded Funds (the “Trust”)

Ladies and Gentlemen:

Please be advised that the undersigned Trust has established one new series of shares to be known as Principal U.S. Small Cap Index ETF (the “Fund”).

In accordance with Section 12, the Additional Portfolios provision, of the Transfer Agency and Service Agreement dated as of May 21, 2015 by and among State Street Bank and Trust Company (“State Street”) and each registered investment company party thereto (as amended, modified, or supplemented from time to time, the “Agreement”), the undersigned Trust hereby requests that State Street act as Transfer Agent for the new Fund under the terms of the Agreement. In connection with such request, the undersigned Trust hereby confirms to State Street, as of the date hereof, its representations and warranties set forth in Section 4 of the Agreement.

Please indicate your acceptance of the foregoing by executing two copies of this letter agreement, returning one to the Fund and retaining one for your records.

Sincerely,
PRINCIPAL EXCHANGE-TRADED FUNDS on behalf of: Principal U.S. Small Cap Index ETF
By:	/s/ Layne A. Rasmussen
Name:	Layne A. Rasmussen
Title:	Vice President and Controller, Duly Authorized

Agreed and Accepted:
STATE STREET BANK AND TRUST COMPANY
By:	/s/ Andrew Erickson
Name:	Andrew Erickson
Title:	Executive Vice President, Duly Authorized
Effective Date: September 21, 2016