UBS Series Funds
1285 Avenue of the Americas
New York, New York 10019-6028
July 9, 2021
VIA EDGAR
US Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549
Re: Notice of Disclosure Filed in Exchange Act Annual Report under Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Exchange Act
Ladies and Gentlemen:
Pursuant to Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Securities Exchange Act of 1934, as amended, notice is hereby provided that UBS Series Funds has made disclosure pursuant to such provisions in its Annual Report on Form N-CSR for the fiscal year ended April 30, 2021, which was filed with the US Securities and Exchange Commission on July 9, 2021.
| Very truly yours, | ||
| UBS Series Funds | ||
| By: | /s/ Joanne M. Kilkeary | |
| Name: | Joanne M. Kilkeary | |
| Title: | Vice President, Treasurer and Principal Accounting Officer | |