Olin 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.
- 2026-02-20: Fiscal year end 2025-12-31; Auditor KPMG LLP; PCAOB firm ID 185; Location St. Louis, MO.
- 2025-02-20: Fiscal year end 2024-12-31; Auditor KPMG LLP; PCAOB firm ID 185; Location St. Louis, MO.
- 2024-02-22: Fiscal year end 2023-12-31; Auditor KPMG LLP; PCAOB firm ID 185; Location St. Louis, MO.
- 2023-02-23: Fiscal year end 2022-12-31; Auditor KPMG LLP; PCAOB firm ID 185; Location St. Louis, MO.
| Filed | Fiscal year end | Auditor | PCAOB firm ID | Location | Internal-control attestation |
|---|
| 2026-02-20 | 2025-12-31 | KPMG LLP | 185 | St. Louis, MO | Yes |
|---|
| 2025-02-20 | 2024-12-31 | KPMG LLP | 185 | St. Louis, MO | Yes |
|---|
| 2024-02-22 | 2023-12-31 | KPMG LLP | 185 | St. Louis, MO | Yes |
|---|
| 2023-02-23 | 2022-12-31 | KPMG LLP | 185 | St. Louis, MO | Yes |
|---|
| 2022-02-24 | 2021-12-31 | KPMG LLP | 185 | St. Louis, MO | Yes |
|---|
| 2021-02-22 | 2020-12-31 | KPMG LLP | | St. Louis, Missouri | Yes |
|---|
| 2020-02-25 | 2019-12-31 | KPMG LLP | | St. Louis, Missouri | |
|---|
| 2019-02-25 | 2018-12-31 | KPMG LLP | | St. Louis, Missouri | |
|---|
| 2018-02-26 | 2017-12-31 | KPMG LLP | | St. Louis, Missouri | |
|---|
| 2017-02-28 | 2016-12-31 | KPMG LLP | | St. Louis, Missouri | |
|---|
| 2015-02-25 | 2014-12-31 | KPMG LLP | | St. Louis, Missouri | |
|---|
| 2014-02-24 | 2013-12-31 | KPMG LLP | | St. Louis, Missouri | |
|---|
| 2013-02-25 | 2012-12-31 | KPMG LLP | | St. Louis, Missouri | |
|---|
| 2012-02-24 | 2011-12-31 | KPMG LLP | | St. Louis, Missouri | |
|---|
| 2011-02-24 | 2010-12-31 | KPMG LLP | | St. Louis, Missouri | |
|---|