Koss Corporation Auditor
The independent registered public accounting firm that signed the audit report in each annual report on Form 10-K, newest first. PCAOB firm ID and the internal-control attestation are as tagged on the cover from fiscal 2021; earlier rows come from the signed report text.
- 2026-08-28: Fiscal year end 2026-06-30; Auditor Wipfli LLP; PCAOB firm ID 344; Location Radnor, Pennsylvania.
- 2025-08-29: Fiscal year end 2025-06-30; Auditor Wipfli LLP; PCAOB firm ID 344; Location Radnor, Pennsylvania.
- 2024-08-30: Fiscal year end 2024-06-30; Auditor Wipfli LLP; PCAOB firm ID 344; Location Radnor, Pennsylvania.
- 2023-08-25: Fiscal year end 2023-06-30; Auditor Wipfli LLP; PCAOB firm ID 344; Location Milwaukee, Wisconsin.
| Filed | Fiscal year end | Auditor | PCAOB firm ID | Location | Internal-control attestation |
|---|
| 2026-08-28 | 2026-06-30 | Wipfli LLP | 344 | Radnor, Pennsylvania | No |
|---|
| 2025-08-29 | 2025-06-30 | Wipfli LLP | 344 | Radnor, Pennsylvania | No |
|---|
| 2024-08-30 | 2024-06-30 | Wipfli LLP | 344 | Radnor, Pennsylvania | No |
|---|
| 2023-08-25 | 2023-06-30 | Wipfli LLP | 344 | Milwaukee, Wisconsin | No |
|---|
| 2022-08-26 | 2022-06-30 | WIPFLI LLP | 344 | Milwaukee, Wisconsin | No |
|---|
| 2021-08-20 | 2021-06-30 | WIPFLI LLP | | Milwaukee, Wisconsin | No |
|---|
| 2020-08-27 | 2020-06-30 | WIPFLI LLP | | Milwaukee, Wisconsin | |
|---|
| 2019-08-30 | 2019-06-30 | WIPFLI LLP | | Milwaukee, Wisconsin | |
|---|
| 2018-08-23 | 2018-06-30 | Baker Tilly Virchow Krause, LLP | | Milwaukee, Wisconsin | |
|---|
| 2017-08-25 | 2017-06-30 | Baker Tilly Virchow Krause, LLP | | Milwaukee, Wisconsin | |
|---|
| 2016-08-25 | 2016-06-30 | Baker Tilly Virchow Krause, LLP | | Milwaukee, Wisconsin | |
|---|
| 2015-08-28 | 2015-06-30 | Baker Tilly Virchow Krause, LLP | | Milwaukee, Wisconsin | |
|---|
| 2014-08-28 | 2014-06-30 | Baker Tilly Virchow Krause, LLP | | Milwaukee, Wisconsin | |
|---|
| 2013-08-23 | 2013-06-30 | Baker Tilly Virchow Krause, LLP | | Milwaukee, Wisconsin | |
|---|
| 2012-08-27 | 2012-06-30 | Baker Tilly Virchow Krause, LLP | | Milwaukee, Wisconsin | |
|---|
| 2011-09-02 | 2011-06-30 | Baker Tilly Virchow Krause, LLP | | Milwaukee, Wisconsin | |
|---|
| 2010-09-20 | 2010-06-30 | Baker Tilly Virchow Krause, LLP | | | |
|---|
| 2010-06-30 | 2009-06-30 | Baker Tilly Virchow Krause, LLP | | | |
|---|
| 2009-08-26 | 2009-06-30 | GRANT THORNTON LLP | | Milwaukee, Wisconsin | |
|---|