# Filing Detail

Form N-CSR - Certified Shareholder Report:
SEC Accession No. 0001104659-25-124683
Filing Date
2025-12-29
Accepted
2025-12-29 12:19:35
Documents
49
Period of Report
2025-10-31
Effectiveness Date
2025-12-29

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | N-CSR | tm2532074d5_ncsr.htm iXBRL | N-CSR | 11917508
2 | EXHIBIT 99.CODEETH | tm2532074d5_ex99-codeeth.htm | EX-99.CODEETH | 48444
3 | EXHIBIT 99.CERT | tm2532074d5_ex99-cert.htm | EX-99.CERT | 13972
4 | EXHIBIT 99.(A)(3)(III) | tm2532074d1_ex99-xax3xiii.htm | EX-99.(A)(3)(III) | 52044
5 | EXHIBIT 99.906CERT | tm2532074d5_ex99-906cert.htm | EX-99.906CERT | 5035
10 | GRAPHIC | j25320747_aa001.jpg | GRAPHIC | 179177
11 | GRAPHIC | j25320747_aa002.jpg | GRAPHIC | 54717
12 | GRAPHIC | j25320747_aa003.jpg | GRAPHIC | 17571
13 | GRAPHIC | j25320747_aa004.jpg | GRAPHIC | 13067
14 | GRAPHIC | j25320747_aa005.jpg | GRAPHIC | 17571
15 | GRAPHIC | j25320747_ba006.jpg | GRAPHIC | 6100
16 | GRAPHIC | j25320747_ba007.jpg | GRAPHIC | 78776
17 | GRAPHIC | j25320747_ba008.jpg | GRAPHIC | 3028
18 | GRAPHIC | j25320747_ca009.jpg | GRAPHIC | 61523
19 | GRAPHIC | j25320747_ca010.jpg | GRAPHIC | 61484
20 | GRAPHIC | j25320747_ca011.jpg | GRAPHIC | 69195
21 | GRAPHIC | j25320747_ca012.jpg | GRAPHIC | 59503
22 | GRAPHIC | j25320747_ca013.jpg | GRAPHIC | 66587
23 | GRAPHIC | j25320747_ca014.jpg | GRAPHIC | 64572
24 | GRAPHIC | j25320747_ca015.jpg | GRAPHIC | 63907
25 | GRAPHIC | j25320747_da016.jpg | GRAPHIC | 36615
26 | GRAPHIC | j25320747_da017.jpg | GRAPHIC | 19553
27 | GRAPHIC | j25320747_da018.jpg | GRAPHIC | 35158
28 | GRAPHIC | j25320747_da019.jpg | GRAPHIC | 19554
29 | GRAPHIC | j25320747_da020.jpg | GRAPHIC | 22293
30 | GRAPHIC | j25320747_da021.jpg | GRAPHIC | 35892
31 | GRAPHIC | j25320747_dc022.jpg | GRAPHIC | 27724
32 | GRAPHIC | j25320747_dc023.jpg | GRAPHIC | 15020
33 | GRAPHIC | j25320747_dc024.jpg | GRAPHIC | 20999
34 | GRAPHIC | j25320747_dc025.jpg | GRAPHIC | 33709
35 | GRAPHIC | j25320747_de026.jpg | GRAPHIC | 19884
36 | GRAPHIC | j25320747_de027.jpg | GRAPHIC | 35969
37 | GRAPHIC | j25320747_de028.jpg | GRAPHIC | 26171
38 | GRAPHIC | j25320747_de029.jpg | GRAPHIC | 17242
39 | GRAPHIC | j25320747_ia030.jpg | GRAPHIC | 4392
40 | GRAPHIC | j25320747_za031.jpg | GRAPHIC | 12766
41 | GRAPHIC | j25320747_za032.jpg | GRAPHIC | 17571
| Complete submission text file | 0001104659-25-124683.txt |  | 18676456

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
6 | XBRL TAXONOMY EXTENSION SCHEMA | ck0001275214-20251031.xsd | EX-101.SCH | 23716
7 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE | ck0001275214-20251031_def.xml | EX-101.DEF | 36918
8 | XBRL TAXONOMY EXTENSION LABEL LINKBASE | ck0001275214-20251031_lab.xml | EX-101.LAB | 69418
9 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE | ck0001275214-20251031_pre.xml | EX-101.PRE | 41956
51 | EXTRACTED XBRL INSTANCE DOCUMENT | tm2532074d5_ncsr_htm.xml | XML | 1067283

Mailing Address 2020 CALAMOS COURT C/O CALAMOS ADVISORS LLC NAPERVILLE IL 60563
Business Address 2020 CALAMOS COURT C/O CALAMOS ADVISORS LLC NAPERVILLE IL 60563 6302451046
CALAMOS STRATEGIC TOTAL RETURN FUND (Filer) CIK: 0001275214 (see all company filings)

EIN.: 043785941 | Fiscal Year End: 1031
Type: N-CSR | Act: 40 | File No.: 811-21484 | Film No.: 251607141