Company · CIK 81027 # PUBLIC SERVICE CO OF OKLAHOMA | CIK | [81027](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000081027) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 4911 — Electric Services | | Incorporated in | OK | | Business address | OH | | Listed | no ticker on SEC record today | | First annual or quarterly report | 1995-03-22 | ## Offerings 5 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-282058 | Shelf Effective | 2024-09-12 | 2026-08-12 | 5 | | 333-251378 | Shelf Effective | 2020-12-16 | 2023-01-03 | 4 | | 333-156319 | Shelf Effective | 2008-12-19 | 2011-01-13 | 4 | | 333-133548 | Shelf Effective | 2006-04-26 | 2007-11-09 | 4 | | 333-114665 | Shelf Effective | 2004-04-21 | 2005-05-18 | 2 | ## Filings 20 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2026-08-12 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000008102726000003/0000081027-26-000003-index.htm) Shelf takedown | 333-282058 | 0000081027-26-000003 | | 2025-06-23 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000008102725000005/0000081027-25-000005-index.htm) Shelf takedown | 333-282058 | 0000081027-25-000005 | | 2024-12-03 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000008102724000010/0000081027-24-000010-index.htm) Shelf takedown | 333-282058 | 0000081027-24-000010 | | 2024-09-24 | [EFFECT](https://www.sec.gov/Archives/edgar/data/81027/999999999524002947/9999999995-24-002947-index.htm) Declared effective | 333-282058 | 9999999995-24-002947 | | 2024-09-12 | [S-3](https://www.sec.gov/Archives/edgar/data/81027/000008102724000004/0000081027-24-000004-index.htm) Shelf registered | 333-282058 | 0000081027-24-000004 | | 2023-01-03 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000008102723000002/0000081027-23-000002-index.htm) Shelf takedown | 333-251378 | 0000081027-23-000002 | | 2021-08-11 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000008102721000005/0000081027-21-000005-index.htm) Shelf takedown | 333-251378 | 0000081027-21-000005 | | 2020-12-30 | [EFFECT](https://www.sec.gov/Archives/edgar/data/81027/999999999520003706/9999999995-20-003706-index.htm) Declared effective | 333-251378 | 9999999995-20-003706 | | 2020-12-16 | [S-3](https://www.sec.gov/Archives/edgar/data/81027/000008102720000005/0000081027-20-000005-index.htm) Shelf registered | 333-251378 | 0000081027-20-000005 | | 2011-01-13 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000000490411000005/0000004904-11-000005-index.htm) Shelf takedown | 333-156319 | 0000004904-11-000005 | | 2009-11-09 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000000490409000182/0000004904-09-000182-index.htm) Shelf takedown | 333-156319 | 0000004904-09-000182 | | 2009-02-03 | [EFFECT](https://www.sec.gov/Archives/edgar/data/81027/999999999509000276/9999999995-09-000276-index.htm) Declared effective | 333-156319 | 9999999995-09-000276 | | 2008-12-19 | [S-3](https://www.sec.gov/Archives/edgar/data/81027/000000490408000173/0000004904-08-000173-index.htm) Shelf registered | 333-156319 | 0000004904-08-000173 | | 2007-11-09 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000093041307008546/0000930413-07-008546-index.htm) Shelf takedown | 333-133548 | 0000930413-07-008546 | | 2007-10-17 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000093041307008017/0000930413-07-008017-index.htm) Shelf takedown | 333-133548 | 0000930413-07-008017 | | 2006-08-07 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000000490406000162/0000004904-06-000162-index.htm) Shelf takedown | 333-133548 | 0000004904-06-000162 | | 2006-04-26 | [S-3](https://www.sec.gov/Archives/edgar/data/81027/000000490406000080/0000004904-06-000080-index.htm) Shelf registered | 333-133548 | 0000004904-06-000080 | | 2005-05-18 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000008102705000001/0000081027-05-000001-index.htm) Shelf takedown | 333-114665 | 0000081027-05-000001 | | 2004-04-21 | [S-3](https://www.sec.gov/Archives/edgar/data/81027/000008102704000003/0000081027-04-000003-index.htm) Shelf registered | 333-114665 | 0000081027-04-000003 | | 2002-11-22 | [424B5](https://www.sec.gov/Archives/edgar/data/81027/000008102702000004/0000081027-02-000004-index.htm) Shelf takedown | 333-100623 | 0000081027-02-000004 | [All filings of this company](https://equitycapital.markets/filings?cik=81027) · [CSV](https://equitycapital.markets/filings.csv?cik=81027) --- Source page: https://equitycapital.markets/company/81027 · Data: U.S. SEC EDGAR · CC BY 4.0