Company facts
- Headquarters
- Naperville, Illinois
- Most recent report
- 8-K, filed May 14, 2024
- Filings on record
- 451 filings
- On EDGAR
- CIK 1275214
- Fiscal year ends
- October
News 3
Prospectuses and Registrations 8 of 10
- 424B3 Prospectus supplement for an offering Oct 2, 2023
- 424B3 Prospectus supplement for an offering Oct 3, 2022
- 424B3 Prospectus supplement for an offering Jun 2, 2022
- 424B3 Prospectus supplement for an offering Jan 19, 2022
- 424B3 Prospectus supplement for an offering Jan 3, 2022
- 424B3 Prospectus supplement for an offering Sep 30, 2021
- 424B3 Prospectus supplement for an offering Aug 27, 2021
- 424B5 Prospectus supplement for an offering May 5, 2021
Proxies 8 of 22
- DEF 14A Proxy statement for a shareholder vote May 11, 2026
- DEF 14A Proxy statement for a shareholder vote May 12, 2025
- DEF 14A Proxy statement for a shareholder vote May 14, 2024
- DEF 14A Proxy statement for a shareholder vote May 8, 2023
- DEF 14A Proxy statement for a shareholder vote May 11, 2022
- DEF 14A Proxy statement for a shareholder vote May 12, 2021
- DEF 14A Proxy statement for a shareholder vote May 14, 2020
- DEF 14A Proxy statement for a shareholder vote May 24, 2019
Ownership 8 of 171
- SCHEDULE 13G Large holder reported a passive stake Sep 11, 2026
- SCHEDULE 13G Large holder reported a passive stake Sep 8, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Sep 8, 2026
- SCHEDULE 13G Large holder reported a passive stake Sep 8, 2026
- 3 Insider reported their initial holding Sep 3, 2026
- 4 Insider reported a trade Aug 26, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Jul 28, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended May 14, 2026
Other 8 of 245
Everything here comes from Calamos Strategic Total Return Fund's own filings on SEC EDGAR. The filing list is rechecked every hour.