# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001628280-26-011983
Filing Date
2026-02-26
Accepted
2026-02-26 07:27:21
Documents
151
Period of Report
2025-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | cbio-20251231.htm iXBRL | 10-K | 2361797
2 | EX-4.3 | ex43-cbioxdescriptionofsec.htm | EX-4.3 | 52703
3 | EX-4.4 | ex44-crescentxformofparasc.htm | EX-4.4 | 99272
4 | EX-10.7 1 | ex1071-crescentxoptionawar.htm | EX-10.7 1 | 51864
5 | EX-10.7 2 | ex1072-crescentxoptionawar.htm | EX-10.7 2 | 53448
6 | EX-10.7 3 | ex1073-crescentxoptionawar.htm | EX-10.7 3 | 51050
7 | EX-10.7 4 | ex1074-crescentxrsugrantag.htm | EX-10.7 4 | 40633
8 | EX-10.7 5 | ex1075-crescentxrsugrantag.htm | EX-10.7 5 | 40287
9 | EX-10.7 6 | ex1076-crescentxrsugrantag.htm | EX-10.7 6 | 38978
10 | EX-10.9 1 | ex1091-crescentx2025induce.htm | EX-10.9 1 | 48571
11 | EX-10.23 | ex1023-crescentxofferlette.htm | EX-10.23 | 82685
12 | EX-10.25 | ex1025-cbioxnonxdirectorco.htm | EX-10.25 | 19173
13 | EX-19 | ex19-crescentxinsidertradi.htm | EX-19 | 85506
14 | EX-23.1 | ex231-cbioconsentdraft.htm | EX-23.1 | 1846
15 | EX-31.1 | exhibit-311.htm | EX-31.1 | 9554
16 | EX-31.2 | exhibit-312.htm | EX-31.2 | 9880
17 | EX-32.1 | exhibit-321.htm | EX-32.1 | 3928
18 | EX-32.2 | exhibit-322.htm | EX-32.2 | 3825
19 | EX-97.1 | ex971-crescentxclawbackpol.htm | EX-97.1 | 28953
25 |  | cbio-20251231_g1.jpg | GRAPHIC | 335176
26 |  | cbio-20251231_g10.jpg | GRAPHIC | 444791
27 |  | cbio-20251231_g11.jpg | GRAPHIC | 1064148
28 |  | cbio-20251231_g12.jpg | GRAPHIC | 315118
29 |  | cbio-20251231_g13.jpg | GRAPHIC | 360338
30 |  | cbio-20251231_g14.jpg | GRAPHIC | 397335
31 |  | cbio-20251231_g15.jpg | GRAPHIC | 394062
32 |  | cbio-20251231_g16.jpg | GRAPHIC | 140716
33 |  | cbio-20251231_g17.jpg | GRAPHIC | 217549
34 |  | cbio-20251231_g18.jpg | GRAPHIC | 436559
35 |  | cbio-20251231_g19.jpg | GRAPHIC | 242065
36 |  | cbio-20251231_g2.jpg | GRAPHIC | 2091254
37 |  | cbio-20251231_g20.jpg | GRAPHIC | 255135
38 |  | cbio-20251231_g21.jpg | GRAPHIC | 245712
39 |  | cbio-20251231_g22.jpg | GRAPHIC | 1693711
40 |  | cbio-20251231_g23.jpg | GRAPHIC | 363536
41 |  | cbio-20251231_g3.jpg | GRAPHIC | 700658
42 |  | cbio-20251231_g4.jpg | GRAPHIC | 292411
43 |  | cbio-20251231_g5.jpg | GRAPHIC | 237082
44 |  | cbio-20251231_g6.jpg | GRAPHIC | 200255
45 |  | cbio-20251231_g7.jpg | GRAPHIC | 646984
46 |  | cbio-20251231_g8.jpg | GRAPHIC | 469539
47 |  | cbio-20251231_g9.jpg | GRAPHIC | 306321
48 |  | image_0.jpg | GRAPHIC | 453414
49 |  | image_0a.jpg | GRAPHIC | 453414
50 |  | image_0b.jpg | GRAPHIC | 453414
| Complete submission text file | 0001628280-26-011983.txt |  | 42073429

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
20 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | cbio-20251231.xsd | EX-101.SCH | 74235
21 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | cbio-20251231_cal.xml | EX-101.CAL | 91271
22 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | cbio-20251231_def.xml | EX-101.DEF | 479125
23 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | cbio-20251231_lab.xml | EX-101.LAB | 847232
24 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | cbio-20251231_pre.xml | EX-101.PRE | 716003
154 | EXTRACTED XBRL INSTANCE DOCUMENT | cbio-20251231_htm.xml | XML | 1013894

Mailing Address 300 FIFTH AVENUE WALTHAM MA 02451
Business Address 300 FIFTH AVENUE WALTHAM MA 02451 617-430-5595
CRESCENT BIOPHARMA, INC. (Filer) CIK: 0001253689 (see all company filings)

EIN.: 000000000 | State of Incorp.: E9 | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-36177 | Film No.: 26681704
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)