UBS Series Funds
04/16/2026 | Press release | Distributed by Public on 04/16/2026 12:16
Prospectus by Investment Company (Form 497)
April 16, 2026
Supplement to the Statements of Additional Information (each, an "SAI" and together, the "SAIs") and Part Bs referenced further below, as may have been supplemented.
Includes:
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UBS Series Funds |
| • |
Master Trust |
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UBS Investment Trust |
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The UBS Funds |
| • |
SMA Relationship Trust |
Dear Investor,
The purpose of this supplement is to update certain information in the SAIs and Part Bs, as applicable, for the above-named investment trusts, including each series thereof (each, a "Trust" and together, the "Trusts") regarding changes to the officers of the Trusts.
Effective immediately, each SAI and Part B is hereby revised as follows:
All references to Joanne Kilkeary, who has retired from UBS AM, in each SAI and Part B are deleted in their entirety.
The section captioned "Organization of the trust; trustees and officers; principal holders and management ownership of securities" or "Item 17. Management of the Fund[s]", as applicable, is revised by replacing the first row of the table titled "Officers" in its entirety with the following:
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Rose Ann Bubloski^; 1968 |
Vice President, Treasurer, Chief Financial Officer, and Principal Accounting Officer | Since 2011 (Vice President); since March 2026 (Treasurer, Chief Financial Officer, and Principal Accounting Officer) | Ms. Bubloski is a director (since 2012) (prior to which she was an associate director (from 2008 to 2012)) and a senior manager of fund accounting-US (previously named product control and investment support) of UBS Asset Management (Americas) LLC and/or UBS Asset Management (US) Inc. ("UBS AM-Americas region"). Ms. Bubloski is vice president, treasurer, chief financial officer, and principal accounting officer of 9 investment companies (consisting of 46 portfolios) for which UBS AM serves as investment advisor or manager. |
ZS-1301
The same section of the SAI is further revised by adding the following as the fourth and fifth rows of the table titled "Officers":
| Nicole Lin^; 1980 | Vice President and Assistant Treasurer | Since March 2026 | Ms. Lin is a senior fund accountant for UBS AM (since 2024). Prior to joining UBS AM, Ms. Lin worked as an officer at State Street. Ms. Lin is a vice president and assistant treasurer of 6 investment companies (consisting of 42 portfolios) for which UBS AM serves as investment advisor or manager. | |||
| John Loubnan† ; 1993 | Vice President and Assistant Treasurer | Since March 2026 | Mr. Loubnan is a senior fund accountant for UBS AM (since 2020). Prior to joining UBS AM, Mr. Loubnan worked as a senior fund accountant at The Bank of New York Mellon. Mr. Loubnan is a vice president and assistant treasurer of 6 investment companies (consisting of 42 portfolios) for which UBS AM serves as investment advisor or manager. | |||
| ^ |
This person's business address is 1000 Harbor Boulevard, Weehawken, NJ 07086. |
| † |
This person's business address is 1285 Avenue of the Americas, New York, NY 10019. |
PLEASE BE SURE TO RETAIN THIS IMPORTANT INFORMATION FOR FUTURE REFERENCE.
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This supplement relates to each of the following SAIs/Part Bs:
| Fund Name |
Date of SAI/Part B |
|||
| UBS Series Funds-UBS Select Government Institutional Fund, UBS Select Treasury Institutional Fund, UBS Select 100% US Treasury Institutional Fund, UBS Select Government Preferred Fund, UBS Select Treasury Preferred Fund, UBS Select 100% US Treasury Preferred Fund, UBS Prime Preferred Fund, UBS Prime Reserves Fund |
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January 26, 2026 for Token-Enabled Shares of UBS Select 100% US Treasury Institutional Fund, and August 28, 2025, as revised January 26, 2026 for each other fund and share class |
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| UBS Series Funds-UBS Liquid Assets Government Fund | August 28, 2025 | |||
| UBS Series Funds-UBS RMA Government Money Market Fund | August 28, 2025 | |||
| UBS Series Funds-UBS Ultra Short Income Fund | August 28, 2025 | |||
| UBS Series Funds-Limited Purpose Cash Investment Fund |
|
August 22, 2025, as revised November 14, 2025 |
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| Master Trust-Government Master Fund, Treasury Master Fund, 100% US Treasury Master Fund, Prime CNAV Master Fund | August 22, 2025 | |||
| UBS Investment Trust-UBS U.S. Allocation Fund | December 29, 2025 | |||
| UBS Funds-UBS Emerging Markets Equity Opportunity Fund, UBS Engage For Impact Fund, UBS Global Allocation Fund, UBS International Sustainable Equity Fund, UBS Multi Income Bond Fund, UBS Sustainable Development Bank Bond Fund, UBS US Dividend Ruler Fund, UBS US Quality Growth At Reasonable Price Fund | October 28, 2025 | |||
| SMA Relationship Trust-Series M | April 30, 2025 | |||
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UBS Series Funds published this content on April 16, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on April 16, 2026 at 18:16 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]