EX-99.906 CERT 4 certs_906.htm SECTION 906 CERTIFICATIONS

Certification Pursuant to Rule 30a-2(b) under the 1940 Act and Section 906
of the Sarbanes-Oxley Act

I, James M. Dykas, President and Chief Executive Officer of First Trust Senior Floating Rate Income Fund II (the “Registrant”), certify that:

| 1. | The Form N-CSR of the Registrant (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

| 2. | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: |  | August 6, 2025 |  | /s/ James M. Dykas |
|  |  |  | James M. Dykas, President and Chief Executive Officer (principal executive officer) |

I, Derek D. Maltbie, Treasurer, Chief Financial Officer and Chief Accounting Officer of First Trust Senior Floating Rate Income Fund II (the “Registrant”), certify that:

| 1. | The Form N-CSR of the Registrant (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

| 2. | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: |  | August 6, 2025 |  | /s/ Derek D. Maltbie |
|  |  |  | Derek D. Maltbie, Treasurer, Chief Financial Officer and Chief Accounting Officer (principal financial officer) |