# EDGAR Filing Document

**Accession Number:** 0001950677
**File Stem:** 0001950677-25-000007
**Filing Date:** 2025-11
**Character Count:** 10187
**Document Hash:** 45cbb34417b82db44de990d3e7ac0788
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001950677-25-000007.hdr.sgml**: 20251114

**ACCESSION NUMBER**: 0001950677-25-000007

**CONFORMED SUBMISSION TYPE**: 13F-HR

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251114

**DATE AS OF CHANGE**: 20251114

**EFFECTIVENESS DATE**: 20251114

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Decagon Asset Management LLP
- **CENTRAL INDEX KEY:** 0001950677

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** X0
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 13F-HR
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 028-24786
- **FILM NUMBER:** 251481902

**BUSINESS ADDRESS:**
- **STREET 1:** 5 SWALLOW PLACE
- **CITY:** LONDON
- **STATE:** X0
- **ZIP:** W1B 2AF
- **BUSINESS PHONE:** 442031482244

**MAIL ADDRESS:**
- **STREET 1:** 5 SWALLOW PLACE
- **CITY:** LONDON
- **STATE:** X0
- **ZIP:** W1B 2AF

### FORM 13F COVER PAGE

**Report for the Calendar Year or Quarter Ended:** 09-30-2025

**Check here if Amendment** [ ] **Amendment Number:** 

**This Amendment (Check only one.):** [ ] is a restatement.

[ ] adds new holdings entries.

**Institutional Investment Manager Filing this Report:**

**Name:** Decagon Asset Management LLP<br>**Address:** 5 SWALLOW PLACE<br>LONDON, X0 W1B 2AF

**Form 13F File Number:** 028-24786

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

**Person Signing this Report on Behalf of Reporting Manager:**

**Name:** Olivia Cooper<br>**Title:** Chief Operating Officer<br>**Phone:** 44 203 148 2244

**Signature, Place, and Date of Signing:**

/s/Olivia Cooper  London, X0  11-14-2025<br>[Signature]  [City, State]  [Date]

**Report Type (Check only one.):**

[x] **13F HOLDINGS REPORT.** (Check here if all holdings of this reporting manager are reported in this report.)

[ ] **13F NOTICE.** (Check here if no holdings are reported in this report, and all holdings are reported by other reporting manager(s).)

[ ] **13F COMBINATION REPORT.** (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)

### Form 13F Summary Page

**Report Summary:**

**Number of Other Included Managers:** 0

**Form 13F Information Table Entry Total:** 59

**Form 13F Information Table Value Total:** $198061520

      (round to nearest dollar)

**List of Other Included Managers:**

Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.

[If there are no entries in this list, state “NONE” and omit the column headings and list entries.]

**NONE**

### FORM 13F INFORMATION TABLE

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | FIGI | VALUE (x$1000) | SHRS OR PRN AMT | SH/PRN | PUT/CALL | INVESTMENT DISCRETION | OTHER MANAGER | VOTING AUTHORITY | VOTING AUTHORITY | VOTING AUTHORITY |
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | FIGI | VALUE (x$1000) | SHRS OR PRN AMT | SH/PRN | PUT/CALL | INVESTMENT DISCRETION | OTHER MANAGER | SOLE | SHARED | NONE |
| AIR LEASE CORP | CL A | 00912X302 |  | 22247330 | 349526 | SH |  | SOLE |  | 349526 | 0 | 0 |
| ALCHEMY INVTS ACQUISITN CORP | *W EXP 11/30/202 | G0232F133 |  | 2241 | 13179 | SH |  | SOLE |  | 13179 | 0 | 0 |
| ANDRETTI ACQUISITION CORP II | *W EXP 06/01/203 | G26745128 |  | 80064 | 400320 | SH |  | SOLE |  | 400320 | 0 | 0 |
| ARMADA ACQUISITION CORP II | *W EXP 05/21/203 | G0R38G112 |  | 219792 | 231385 | SH |  | SOLE |  | 231385 | 0 | 0 |
| ARTIUS II ACQUISITION INC | RIGHT 11/27/2029 | G0509J123 |  | 85248 | 355203 | SH |  | SOLE |  | 355203 | 0 | 0 |
| AXIOM INTELLIGENCE AC CORP 1 | RIGHT 06/10/2030 | G0750N112 |  | 56000 | 350000 | SH |  | SOLE |  | 350000 | 0 | 0 |
| BAIN CAP GSS INVT CORP | UNIT 99/99/9999 | G0R78B122 |  | 5335006 | 528742 | SH |  | SOLE |  | 528742 | 0 | 0 |
| BLEICHROEDER ACQUISITION COR | RIGHT 11/04/2026 | G1169T138 |  | 32248 | 47423 | SH |  | SOLE |  | 47423 | 0 | 0 |
| BLUE ACQUISITION CORP. | RIGHT 06/11/2030 | G1331A116 |  | 34761 | 215371 | SH |  | SOLE |  | 215371 | 0 | 0 |
| BTC DEV CORP | UNIT 09/11/2030 | G0701G125 |  | 5050000 | 500000 | SH |  | SOLE |  | 500000 | 0 | 0 |
| CANTALOUPE INC | COM | 138103106 |  | 422800 | 40000 | SH | Call | SOLE |  | 40000 | 0 | 0 |
| CAYSON ACQUISITION CORP | RIGHT 99/99/9999 | G1993W117 |  | 18373 | 102635 | SH |  | SOLE |  | 102635 | 0 | 0 |
| CDT EQUITY INC | *W EXP 09/22/202 | 20678X114 |  | 4225 | 400000 | SH |  | SOLE |  | 400000 | 0 | 0 |
| CHAMPIONSGATE ACQUISITION CO | RIGHT 05/14/2030 | G2124S116 |  | 24094 | 172103 | SH |  | SOLE |  | 172103 | 0 | 0 |
| CHART INDS INC | COM | 16115Q308 |  | 27567060 | 137732 | SH |  | SOLE |  | 137732 | 0 | 0 |
| CHART INDS INC | COM | 16115Q308 |  | 8006000 | 40000 | SH | Call | SOLE |  | 40000 | 0 | 0 |
| COPLEY ACQUISITION CORP | *W EXP 99/99/999 | G24243126 |  | 71101 | 353910 | SH |  | SOLE |  | 353910 | 0 | 0 |
| CRANE HBR ACQUISITION CORP | RIGHT 04/17/2030 | G24979117 |  | 76839 | 247870 | SH |  | SOLE |  | 247870 | 0 | 0 |
| CYBERARK SOFTWARE LTD | SHS | M2682V108 |  | 36231418 | 74990 | SH |  | SOLE |  | 74990 | 0 | 0 |
| DNOW INC | COM | 67011P100 |  | 6985538 | 458068 | SH |  | SOLE |  | 458068 | 0 | 0 |
| EGH ACQUISITION CORP. | RIGHT 05/08/2025 | G2946P118 |  | 67756 | 322642 | SH |  | SOLE |  | 322642 | 0 | 0 |
| ELME COMMUNITIES | SH BEN INT | 939653101 |  | 8669968 | 514233 | SH |  | SOLE |  | 514233 | 0 | 0 |
| EMMIS ACQUISITION CORP. | UNIT 09/12/2030 | G3037D121 |  | 5224153 | 523200 | SH |  | SOLE |  | 523200 | 0 | 0 |
| EQV VENTURES ACQUISITION COR | *W EXP 07/01/203 | G3106N117 |  | 52059 | 104116 | SH |  | SOLE |  | 104116 | 0 | 0 |
| FUTURE VISION II ACQUISITION | RIGHT 06/29/2029 | G37068114 |  | 5539 | 30790 | SH |  | SOLE |  | 30790 | 0 | 0 |
| GENERATION ESSENTIALS GROUP | *W EXP 02/15/202 | G38268119 |  | 26702 | 203834 | SH |  | SOLE |  | 203834 | 0 | 0 |
| GSR IV ACQUISITION CORP | UNIT 08/22/2030 | G4R12K123 |  | 6931327 | 683900 | SH |  | SOLE |  | 683900 | 0 | 0 |
| HAYMAKER ACQUISITION CORP IV | *W EXP 05/31/202 | G4375F116 |  | 7531 | 19068 | SH |  | SOLE |  | 19068 | 0 | 0 |
| HIGHVIEW MERGER CORP | UNIT 07/24/2030 | G4569C127 |  | 2024000 | 200000 | SH |  | SOLE |  | 200000 | 0 | 0 |
| IB ACQUISITION CORP | RIGHT 03/28/2026 | 44934N116 |  | 38453 | 459411 | SH |  | SOLE |  | 459411 | 0 | 0 |
| K GROWTH ACQUISITION CORP | RIGHT 08/29/2031 | G52258129 |  | 95333 | 635555 | SH |  | SOLE |  | 635555 | 0 | 0 |
| KOCHAV DEFENSE ACQUI CO | RIGHT 05/21/2030 | G5304D114 |  | 83721 | 380552 | SH |  | SOLE |  | 380552 | 0 | 0 |
| KOCHAV DEFENSE ACQUI CO | SHS CL A | G5304D106 |  | 3817097 | 380568 | SH |  | SOLE |  | 380568 | 0 | 0 |
| LEGATO MERGER CORP III | *W EXP 05/08/203 | G5451A111 |  | 93794 | 252676 | SH |  | SOLE |  | 252676 | 0 | 0 |
| MAYWOOD ACQUISITION CORP | RIGHT 99/99/9999 | G6001J131 |  | 150001 | 250000 | SH |  | SOLE |  | 250000 | 0 | 0 |
| MERUS N V | COM | N5749R100 |  | 7882991 | 83728 | SH |  | SOLE |  | 83728 | 0 | 0 |
| MERUS N V | COM | N5749R100 |  | 188300 | 2000 | SH | Put | SOLE |  | 2000 | 0 | 0 |
| MOUNTAIN LAKE ACQUISITION CO | RIGHT 11/15/2028 | G6301B127 |  | 19272 | 128390 | SH |  | SOLE |  | 128390 | 0 | 0 |
| NABORS ENERGY TRANSITION COR | CL A | G6363K106 |  | 2720668 | 242700 | SH |  | SOLE |  | 242700 | 0 | 0 |
| NEW PROVIDENCE ACQUISITION C | *W EXP 04/24/203 | G6476A110 |  | 38234 | 86895 | SH |  | SOLE |  | 86895 | 0 | 0 |
| NEW PROVIDENCE ACQUISITION C | USD CL A ORD SHS | G6476A102 |  | 2578552 | 253545 | SH |  | SOLE |  | 253545 | 0 | 0 |
| OAKTREE ACQUISITION CORP III | *W EXP 09/01/203 | G6717R112 |  | 144469 | 192624 | SH |  | SOLE |  | 192624 | 0 | 0 |
| OAKTREE ACQUISITION CORP III | SHS CL A | G6717R104 |  | 6771814 | 644321 | SH |  | SOLE |  | 644321 | 0 | 0 |
| OYSTER ENTERPRISES II ACQUIS | RIGHT 05/22/2030 | G6861F138 |  | 31125 | 183091 | SH |  | SOLE |  | 183091 | 0 | 0 |
| PELICAN ACQUISITION CORP | RIGHT 05/02/2030 | G6993G111 |  | 164134 | 607908 | SH |  | SOLE |  | 607908 | 0 | 0 |
| PELICAN ACQUISITION CORP | SHS | G6993G103 |  | 3266956 | 324747 | SH |  | SOLE |  | 324747 | 0 | 0 |
| PERCEPTIVE CAP SOLUTIONS COR | CL A ORD SHS | G70077105 |  | 4018682 | 379121 | SH |  | SOLE |  | 379121 | 0 | 0 |
| PROCAP ACQUISITION CORP | *W EXP 05/16/203 | G7257A121 |  | 100624 | 154807 | SH |  | SOLE |  | 154807 | 0 | 0 |
| RANGE CAP ACQUISITION CORP | RIGHT 99/99/9999 | G7375C116 |  | 235642 | 501367 | SH |  | SOLE |  | 501367 | 0 | 0 |
| SBC MED GROUP HLDGS INC | *W EXP 09/17/202 | 73245B115 |  | 246438 | 1181391 | SH |  | SOLE |  | 1181391 | 0 | 0 |
| SILVERBOX CORP IV | SHS CL A | G81354105 |  | 7064675 | 674754 | SH |  | SOLE |  | 674754 | 0 | 0 |
| SPRING VALLEY ACQUISTN CORP | RIGHT 02/25/2026 | G83752132 |  | 385517 | 741376 | SH |  | SOLE |  | 741376 | 0 | 0 |
| STONEBRIDGE ACQUISITION II C | UNIT 09/09/2030 | G85096124 |  | 3953673 | 396557 | SH |  | SOLE |  | 396557 | 0 | 0 |
| TEXAS VENTURES ACQUISITION I | *W EXP 04/23/203 | G8772L113 |  | 269239 | 244762 | SH |  | SOLE |  | 244762 | 0 | 0 |
| THE ODP CORP | COM | 88337F105 |  | 2646781 | 95037 | SH |  | SOLE |  | 95037 | 0 | 0 |
| VINE HILL CAP INVT CORP. | *W EXP 07/01/203 | G93Y09115 |  | 80000 | 50000 | SH |  | SOLE |  | 50000 | 0 | 0 |
| WILLOW LANE ACQUISITION CORP | ORD SHS CL A | G9675P102 |  | 4198144 | 362534 | SH |  | SOLE |  | 362534 | 0 | 0 |
| YORKVILLE ACQUISITION CORP. | *W EXP 06/06/203 | G98659124 |  | 181549 | 151291 | SH |  | SOLE |  | 151291 | 0 | 0 |
| YORKVILLE ACQUISITION CORP. | SHS CL A | G98659116 |  | 11036469 | 1035316 | SH |  | SOLE |  | 1035316 | 0 | 0 |

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