Company · CIK 52485 # INTERSTATE POWER & LIGHT CO | CIK | [52485](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000052485) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 4931 — Electric & Other Services Combined | | Incorporated in | IA | | Business address | IA | | Listed | no ticker on SEC record today | | First annual or quarterly report | 1994-03-29 | ## Offerings 13 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-276062-01 | Shelf Effective | 2023-12-15 | 2026-08-20 | 9 | | 333-251353-01 | Shelf Effective | 2020-12-15 | 2023-09-19 | 5 | | 333-222076-02 | Shelf Effective | 2017-12-15 | 2020-05-27 | 9 | | 333-200941-01 | Shelf Effective | 2014-12-15 | 2017-11-14 | 7 | | 333-178577-02 | Shelf Effective | 2011-12-16 | 2014-11-18 | 7 | | 333-170631 | Shelf Effective | 2010-11-16 | 2010-11-24 | 2 | | 333-159478 | Shelf Effective | 2009-05-26 | 2010-08-24 | 8 | | 333-151898 | Shelf Effective | 2008-06-24 | 2008-10-02 | 4 | | 333-137197 | Shelf Effective | 2006-09-08 | 2006-09-27 | 2 | | 333-114065 | Shelf Effective | 2004-03-31 | 2005-07-19 | 5 | | 333-109369 | Shelf Final prospectus | 2003-10-01 | 2003-10-15 | 2 | | 333-108199 | Shelf Final prospectus | 2003-08-25 | 2003-09-11 | 2 | | 333-104273 | Shelf Effective | 2003-04-02 | 2003-09-10 | 3 | ## Filings 65 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2026-08-20 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312526359182/0001193125-26-359182-index.htm) Shelf takedown | 333-276062-01 | 0001193125-26-359182 | | 2026-08-18 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312526354786/0001193125-26-354786-index.htm) Shelf takedown | 333-276062-01 | 0001193125-26-354786 | | 2025-09-10 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312525200103/0001193125-25-200103-index.htm) Shelf takedown | 333-276062-01 | 0001193125-25-200103 | | 2025-09-08 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312525197821/0001193125-25-197821-index.htm) Shelf takedown | 333-276062-01 | 0001193125-25-197821 | | 2025-05-15 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000162828025025830/0001628280-25-025830-index.htm) Shelf takedown | 333-276062-01 | 0001628280-25-025830 | | 2025-05-13 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000162828025024921/0001628280-25-024921-index.htm) Shelf takedown | 333-276062-01 | 0001628280-25-024921 | | 2024-09-05 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312524214163/0001193125-24-214163-index.htm) Shelf takedown | 333-276062-01 | 0001193125-24-214163 | | 2024-09-04 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312524212685/0001193125-24-212685-index.htm) Shelf takedown | 333-276062-01 | 0001193125-24-212685 | | 2023-12-15 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/52485/000035254123000122/0000352541-23-000122-index.htm) Shelf registered | 333-276062-01 | 0000352541-23-000122 | | 2023-09-19 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312523237651/0001193125-23-237651-index.htm) Shelf takedown | 333-251353-01 | 0001193125-23-237651 | | 2023-09-18 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312523236604/0001193125-23-236604-index.htm) Shelf takedown | 333-251353-01 | 0001193125-23-236604 | | 2021-11-17 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312521332535/0001193125-21-332535-index.htm) Shelf takedown | 333-251353-01 | 0001193125-21-332535 | | 2021-11-16 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312521330757/0001193125-21-330757-index.htm) Shelf takedown | 333-251353-01 | 0001193125-21-330757 | | 2020-12-15 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/52485/000119312520318103/0001193125-20-318103-index.htm) Shelf registered | 333-251353-01 | 0001193125-20-318103 | | 2020-05-27 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312520153052/0001193125-20-153052-index.htm) Shelf takedown | 333-222076-02 | 0001193125-20-153052 | | 2020-05-26 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312520150951/0001193125-20-150951-index.htm) Shelf takedown | 333-222076-02 | 0001193125-20-150951 | | 2019-09-20 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312519250740/0001193125-19-250740-index.htm) Shelf takedown | 333-222076-02 | 0001193125-19-250740 | | 2019-09-19 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312519249035/0001193125-19-249035-index.htm) Shelf takedown | 333-222076-02 | 0001193125-19-249035 | | 2019-03-26 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312519086757/0001193125-19-086757-index.htm) Shelf takedown | 333-222076-02 | 0001193125-19-086757 | | 2019-03-25 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312519084346/0001193125-19-084346-index.htm) Shelf takedown | 333-222076-02 | 0001193125-19-084346 | | 2018-09-21 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312518279910/0001193125-18-279910-index.htm) Shelf takedown | 333-222076-02 | 0001193125-18-279910 | | 2018-09-19 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312518277176/0001193125-18-277176-index.htm) Shelf takedown | 333-222076-02 | 0001193125-18-277176 | | 2017-12-15 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/52485/000119312517370362/0001193125-17-370362-index.htm) Shelf registered | 333-222076-02 | 0001193125-17-370362 | | 2017-11-14 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312517341202/0001193125-17-341202-index.htm) Shelf takedown | 333-200941-01 | 0001193125-17-341202 | | 2017-11-09 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312517338129/0001193125-17-338129-index.htm) Shelf takedown | 333-200941-01 | 0001193125-17-338129 | | 2016-09-13 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312516708458/0001193125-16-708458-index.htm) Shelf takedown | 333-200941-01 | 0001193125-16-708458 | | 2016-09-12 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312516707020/0001193125-16-707020-index.htm) Shelf takedown | 333-200941-01 | 0001193125-16-707020 | | 2015-08-14 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312515291771/0001193125-15-291771-index.htm) Shelf takedown | 333-200941-01 | 0001193125-15-291771 | | 2015-08-13 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312515289177/0001193125-15-289177-index.htm) Shelf takedown | 333-200941-01 | 0001193125-15-289177 | | 2014-12-15 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/52485/000119312514442050/0001193125-14-442050-index.htm) Shelf registered | 333-200941-01 | 0001193125-14-442050 | | 2014-11-18 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312514416432/0001193125-14-416432-index.htm) Shelf takedown | 333-178577-02 | 0001193125-14-416432 | | 2014-11-17 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312514414329/0001193125-14-414329-index.htm) Shelf takedown | 333-178577-02 | 0001193125-14-414329 | | 2013-10-04 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312513391547/0001193125-13-391547-index.htm) Shelf takedown | 333-178577-02 | 0001193125-13-391547 | | 2013-10-03 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312513389522/0001193125-13-389522-index.htm) Shelf takedown | 333-178577-02 | 0001193125-13-389522 | | 2013-03-15 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312513110097/0001193125-13-110097-index.htm) Shelf takedown | 333-178577-02 | 0001193125-13-110097 | | 2013-03-14 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312513106370/0001193125-13-106370-index.htm) Shelf takedown | 333-178577-02 | 0001193125-13-106370 | | 2011-12-16 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/52485/000119312511343983/0001193125-11-343983-index.htm) Shelf registered | 333-178577-02 | 0001193125-11-343983 | | 2010-11-24 | [EFFECT](https://www.sec.gov/Archives/edgar/data/52485/999999999510003376/9999999995-10-003376-index.htm) Declared effective | 333-170631 | 9999999995-10-003376 | | 2010-11-16 | [S-3](https://www.sec.gov/Archives/edgar/data/52485/000119312510261928/0001193125-10-261928-index.htm) Shelf registered | 333-170631 | 0001193125-10-261928 | | 2010-08-24 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312510195577/0001193125-10-195577-index.htm) Shelf takedown | 333-159478 | 0001193125-10-195577 | | 2010-08-23 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312510194605/0001193125-10-194605-index.htm) Shelf takedown | 333-159478 | 0001193125-10-194605 | | 2010-06-11 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312510137742/0001193125-10-137742-index.htm) Shelf takedown | 333-159478 | 0001193125-10-137742 | | 2010-06-10 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312510136672/0001193125-10-136672-index.htm) Shelf takedown | 333-159478 | 0001193125-10-136672 | | 2009-07-08 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312509145801/0001193125-09-145801-index.htm) Shelf takedown | 333-159478 | 0001193125-09-145801 | | 2009-07-07 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312509144871/0001193125-09-144871-index.htm) Shelf takedown | 333-159478 | 0001193125-09-144871 | | 2009-06-05 | [EFFECT](https://www.sec.gov/Archives/edgar/data/52485/999999999509001613/9999999995-09-001613-index.htm) Declared effective | 333-159478 | 9999999995-09-001613 | | 2009-05-26 | [S-3](https://www.sec.gov/Archives/edgar/data/52485/000089706909000988/0000897069-09-000988-index.htm) Shelf registered | 333-159478 | 0000897069-09-000988 | | 2008-10-02 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312508205194/0001193125-08-205194-index.htm) Shelf takedown | 333-151898 | 0001193125-08-205194 | | 2008-10-01 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312508204315/0001193125-08-204315-index.htm) Shelf takedown | 333-151898 | 0001193125-08-204315 | | 2008-08-06 | [EFFECT](https://www.sec.gov/Archives/edgar/data/52485/999999999508002443/9999999995-08-002443-index.htm) Declared effective | 333-151898 | 9999999995-08-002443 | | 2008-06-24 | [S-3](https://www.sec.gov/Archives/edgar/data/52485/000089706908001101/0000897069-08-001101-index.htm) Shelf registered | 333-151898 | 0000897069-08-001101 | | 2006-09-27 | [EFFECT](https://www.sec.gov/Archives/edgar/data/52485/999999999506001677/9999999995-06-001677-index.htm) Declared effective | 333-137197 | 9999999995-06-001677 | | 2006-09-08 | [S-3](https://www.sec.gov/Archives/edgar/data/52485/000089706906002011/0000897069-06-002011-index.htm) Shelf registered | 333-137197 | 0000897069-06-002011 | | 2005-07-19 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000095013705008827/0000950137-05-008827-index.htm) Shelf takedown | 333-114065 | 0000950137-05-008827 | | 2004-08-03 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000095013704006115/0000950137-04-006115-index.htm) Shelf takedown | 333-114065 | 0000950137-04-006115 | | 2004-05-04 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000095013704003534/0000950137-04-003534-index.htm) Shelf takedown | 333-114065 | 0000950137-04-003534 | | 2004-05-03 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000095013704003505/0000950137-04-003505-index.htm) Shelf takedown | 333-114065 | 0000950137-04-003505 | | 2004-03-31 | [S-3](https://www.sec.gov/Archives/edgar/data/52485/000089706904000731/0000897069-04-000731-index.htm) Shelf registered | 333-114065 | 0000897069-04-000731 | | 2003-10-15 | [424B1](https://www.sec.gov/Archives/edgar/data/52485/000119312503062093/0001193125-03-062093-index.htm) Final prospectus | 333-109369 | 0001193125-03-062093 | | 2003-10-01 | [S-3](https://www.sec.gov/Archives/edgar/data/52485/000089706903001176/0000897069-03-001176-index.htm) Shelf registered | 333-109369 | 0000897069-03-001176 | | 2003-09-11 | [424B1](https://www.sec.gov/Archives/edgar/data/52485/000119312503048233/0001193125-03-048233-index.htm) Final prospectus | 333-108199 | 0001193125-03-048233 | | 2003-09-10 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312503047836/0001193125-03-047836-index.htm) Shelf takedown | 333-104273 | 0001193125-03-047836 | | 2003-09-08 | [424B5](https://www.sec.gov/Archives/edgar/data/52485/000119312503046464/0001193125-03-046464-index.htm) Shelf takedown | 333-104273 | 0001193125-03-046464 | | 2003-08-25 | [S-3](https://www.sec.gov/Archives/edgar/data/52485/000089706903000958/0000897069-03-000958-index.htm) Shelf registered | 333-108199 | 0000897069-03-000958 | | 2003-04-02 | [S-3](https://www.sec.gov/Archives/edgar/data/52485/000089706903000409/0000897069-03-000409-index.htm) Shelf registered | 333-104273 | 0000897069-03-000409 | [All filings of this company](https://equitycapital.markets/filings?cik=52485) · [CSV](https://equitycapital.markets/filings.csv?cik=52485) --- Source page: https://equitycapital.markets/company/52485 · Data: U.S. SEC EDGAR · CC BY 4.0