(the “Trust”)
(the “Fund”)
Supplement dated March 6, 2026 to the Fund’s
Statutory Prospectus dated
Effective February 28, 2026, under “Summary – abrdn Ultra Short Municipal Income Fund”, the expense table in the “Fees and Expenses of the Fund” section on page 68 of the Prospectus is replaced in its entirety by the following:
| Class A Shares | Class A1 Shares | Institutional Class Shares | ||||||||||
| Maximum Sales Charge (Load) imposed upon purchases (as a percentage of offering price) | % | |||||||||||
| Maximum Deferred Sales Charge (Load) (as a percentage of offering or sale price, whichever is less) | %(1) | |||||||||||
| Small Account Fee (2) | $ | $ | $ | |||||||||
| Management Fees (3) | % | % | % | |||||||||
| Distribution and/or Service (12b-1) Fees | % | % | ||||||||||
| Other Expenses | % | % | % | |||||||||
| Total Annual Fund Operating Expenses | % | % | % | |||||||||
| Less: Amount of Fee Limitations/Expense Reimbursements (4) | % | % | % | |||||||||
| Total Annual Fund Operating Expenses After Fee Limitations/Expense Reimbursements | % | % | % |
(1)
(2)
(3)
(4)
Please retain this supplement for future reference.