497ETF Series Solutions0001540305FALSEN-1A0001540305ck0001540305:S000085062Member2026-08-282026-08-2800015403052026-08-282026-08-28
Filed pursuant to Rule 497(e)
File Nos. 333-179562; 811-22668
Aptus October Buffer ETF (OCTB)
(the “Fund”)
Supplement dated September 30, 2026 to the Fund’s Summary Prospectus and
Prospectus, each dated August 28, 2026
As described in the Fund’s Summary Prospectus and Prospectus, shareholders are subject to a pre-determined upside return cap (“Cap”) from an investment in the Fund for a given period of approximately one year (the “Investment Period”).
On September 29, 2026, the previous Investment Period for the Fund ended. A new Investment Period for the fund began as of September 30, 2026 and will end on September 29, 2027. The Investment Period and Cap for each Fund is set forth below.
Investment
Period Start
Investment
Period End
Buffer (before Fund fees and expenses)Buffer (after Fund fees and expenses)*Cap (before Fund
fees and expenses)
Cap (after Fund
fees and expenses)*
Aptus October Buffer ETFSeptember 30, 2026September 29, 202715%14.25%16.99%16.24%
* For this purpose, Fund fees and expenses consist of the Fund’s total expense ratio and net options trading costs, if any.





Please retain this Supplement with your Summary Prospectus and Prospectus for future reference.


ATTACHMENTS / EXHIBITS

ATTACHMENTS / EXHIBITS

XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT

XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT

XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT

XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT

IDEA: R1.htm

IDEA: R2.htm

IDEA: R3.htm

IDEA: FilingSummary.xml

IDEA: MetaLinks.json

IDEA: ck0001540305-20260930_htm.xml