# EDGAR Filing Document

**Accession Number:** 0001096978
**File Stem:** 0001085146-23-001158
**Filing Date:** 2023-2
**Character Count:** 13492
**Document Hash:** 83446eda0543c9f019d502721336c76d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001085146-23-001158.hdr.sgml**: 20230214

**ACCESSION NUMBER**: 0001085146-23-001158

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

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20221231

**FILED AS OF DATE**: 20230214

**DATE AS OF CHANGE**: 20230213

**EFFECTIVENESS DATE**: 20230214

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MARINER INVESTMENT GROUP LLC
- **CENTRAL INDEX KEY:** 0001096978
- **IRS NUMBER:** 510661527
- **STATE OF INCORPORATION:** DE

**FILING VALUES:**
- **FORM TYPE:** 13F-HR
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 028-11231
- **FILM NUMBER:** 23621578

**BUSINESS ADDRESS:**
- **STREET 1:** 500 MAMARONECK AVENUE, 4TH FLOOR
- **CITY:** HARRISON
- **STATE:** NY
- **ZIP:** 10528
- **BUSINESS PHONE:** 914-670-4300

**MAIL ADDRESS:**
- **STREET 1:** 500 MAMARONECK AVENUE, 4TH FLOOR
- **CITY:** HARRISON
- **STATE:** NY
- **ZIP:** 10528

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MARINER INVESTMENT GROUP INC
- **DATE OF NAME CHANGE:** 19991015

### FORM 13F COVER PAGE

**Report for the Calendar Year or Quarter Ended:** 12-31-2022

**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:** MARINER INVESTMENT GROUP LLC<br>**Address:** 500 MAMARONECK AVENUE 4TH FLOOR<br>Harrison, NY 10528

**Form 13F File Number:** 028-11231

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:** Vitaly Granovsky<br>**Title:** Managing Director<br>**Phone:** 914 670-4393

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

/s/  Vitaly Granovsky  Harrison, NY  02-13-2023<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:** 93

**Form 13F Information Table Value Total:** $34236

      (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 |
| AETHERIUM ACQUISITION CORP | UNIT 12/21/2026 | 00809J200 |  | 307 | 30000 | SH |  | DFND |  | 30000 | 0 | 0 |
| APX ACQUISITION CORP I | UNIT 12/07/2026 | G0440J117 |  | 431 | 40000 | SH |  | DFND |  | 40000 | 0 | 0 |
| ATHENA TECHNOLOGY ACQ CORP I | *W EXP 10/17/202 | 04687C113 |  | 0 | 10000 | SH |  | DFND |  | 10000 | 0 | 0 |
| ATHENA TECHNOLOGY ACQ CORP I | CL A COM | 04687C105 |  | 201 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| AVAYA HLDGS CORP | NOTE 2.250% 6/1 | 05351XAB7 |  | 979 | 23030000 | PRN |  | DFND |  | 23030000 | 0 | 0 |
| BATTERY FUTURE ACQUISITION C | UNIT 99/99/9999 | G0888J116 |  | 205 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| BLACKROCK CAP ALLOCATION TR | COM | 09260U109 |  | 351 | 25277 | SH |  | DFND |  | 25277 | 0 | 0 |
| BLACKROCK ESG CAP ALLC TR | SHS BEN INT | 09262F100 |  | 463 | 34442 | SH |  | DFND |  | 34442 | 0 | 0 |
| BLACKROCK MUNI INCOME TR II | COM | 09249N101 |  | 540 | 52301 | SH |  | DFND |  | 52301 | 0 | 0 |
| BLACKROCK MUNIYIELD FD INC | COM | 09253W104 |  | 673 | 64688 | SH |  | DFND |  | 64688 | 0 | 0 |
| BLUE OWL CAPITAL INC | COM CL A | 09581B103 |  | 326 | 30800 | SH |  | DFND |  | 30800 | 0 | 0 |
| BYNORDIC ACQUISITION CORP | UNIT 07/01/2027 | 124420209 |  | 205 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| CARTESIAN GROWTH CORP | CL A SHS | G19276107 |  | 175 | 16000 | SH |  | DFND |  | 16000 | 0 | 0 |
| CHURCHILL CAPITAL CORP VII | COM CL A | 17144M102 |  | 199 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| CLEAR CHANNEL OUTDOOR HLDGS | COM | 18453H106 |  | 107 | 102000 | SH |  | DFND |  | 102000 | 0 | 0 |
| CONSTELLATION ACQUISITN CORP | UNIT 99/99/9999 | G2R18K121 |  | 101 | 10000 | SH |  | DFND |  | 10000 | 0 | 0 |
| CREDIT SUISSE GROUP | SPONSORED ADR | 225401108 |  | 10 | 201000 | SH | Put | DFND |  | 201000 | 0 | 0 |
| DYNEX CAP INC | COM | 26817Q886 |  | 127 | 10000 | SH |  | DFND |  | 10000 | 0 | 0 |
| EATON VANCE CALIF MUN BD FD | COM | 27828A100 |  | 503 | 58242 | SH |  | DFND |  | 58242 | 0 | 0 |
| EATON VANCE NEW YORK MUN BD | COM | 27827Y109 |  | 589 | 65376 | SH |  | DFND |  | 65376 | 0 | 0 |
| EDTECHX HOLDINGS ACQU CORP I | *W EXP 06/15/202 | 28139A110 |  | 0 | 10000 | SH |  | DFND |  | 10000 | 0 | 0 |
| EVE MOBILITY ACQUISITION COR | UNIT 99/99/9999 | G3218G125 |  | 308 | 30000 | SH |  | DFND |  | 30000 | 0 | 0 |
| EVERGREEN CORPORATION | UNIT 02/08/2027 | G3312W125 |  | 301 | 28220 | SH |  | DFND |  | 28220 | 0 | 0 |
| EVO ACQUISITION CORP | *W EXP 01/04/202 | 30052G116 |  | 1 | 14450 | SH |  | DFND |  | 14450 | 0 | 0 |
| FIRST RESERVE SUSTAINABLE GW | CLASS A COM | 336169107 |  | 201 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| FRONTIER INVESTMENT CORP | UNIT 06/29/2026 | G36816117 |  | 118 | 11789 | SH |  | DFND |  | 11789 | 0 | 0 |
| FTAC EMERALD ACQUISITION COR | UNIT 10/19/2028 | 29103K209 |  | 201 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| FUTURETECH II ACQUISITION CO | UNIT 12/23/2022 | 36119D202 |  | 132 | 12900 | SH |  | DFND |  | 12900 | 0 | 0 |
| GARDINER HEALTHCARE ACQTS CO | *W EXP 07/30/202 | 365506112 |  | 4 | 30000 | SH |  | DFND |  | 30000 | 0 | 0 |
| GARDINER HEALTHCARE ACQTS CO | COMMON STOCK | 365506104 |  | 308 | 30000 | SH |  | DFND |  | 30000 | 0 | 0 |
| GIGCAPITAL 5 INC | *W EXP 03/28/202 | 37519U117 |  | 1 | 15530 | SH |  | DFND |  | 15530 | 0 | 0 |
| GOAL ACQUISITIONS CORP | *W EXP 02/11/202 | 38021H115 |  | 2 | 50000 | SH |  | DFND |  | 50000 | 0 | 0 |
| GOLDEN ARROW MERGER CORP | *W EXP 07/31/202 | 380799114 |  | 0 | 19150 | SH |  | DFND |  | 19150 | 0 | 0 |
| GOLDEN ARROW MERGER CORP | CLASS A COM | 380799106 |  | 701 | 70000 | SH |  | DFND |  | 70000 | 0 | 0 |
| GORES HOLDINGS IX INC | UNIT 01/14/2029 | 38287A200 |  | 199 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| GX ACQUISITION CORP II | UNIT 03/17/2026 | 36260F204 |  | 152 | 14900 | SH |  | DFND |  | 14900 | 0 | 0 |
| HEALTHCARE AI ACQUISITION CO | UNIT 12/07/2026 | G4373K125 |  | 205 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| HERTZ GLOBAL HLDGS INC | COM NEW | 42806J700 |  | 7388 | 480065 | SH |  | DFND |  | 480065 | 0 | 0 |
| INDUSTRIAL TECH ACQSTNS II I | UNIT 03/31/2028 | 45635R207 |  | 205 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| ISHARES TR | IBOXX HI YD ETF | 464288513 |  | 28 | 600000 | SH | Call | DFND |  | 600000 | 0 | 0 |
| ISHARES TR | IBOXX HI YD ETF | 464288513 |  | 7 | 200000 | SH | Put | DFND |  | 200000 | 0 | 0 |
| ISHARES TR | PFD AND INCM SEC | 464288687 |  | 3 | 50500 | SH | Put | DFND |  | 50500 | 0 | 0 |
| JACKSON ACQUISITION CO | UNIT 99/99/9999 | 46653C205 |  | 254 | 25000 | SH |  | DFND |  | 25000 | 0 | 0 |
| KHOSLA VENTURES ACQUISITION | CL A | 482504107 |  | 398 | 39900 | SH |  | DFND |  | 39900 | 0 | 0 |
| KHOSLA VENTURES ACQUT CO III | COM CL A | 482506102 |  | 100 | 10000 | SH |  | DFND |  | 10000 | 0 | 0 |
| M3 BRIGADE ACQUISITION II CO | COM CL A | 553800103 |  | 339 | 33790 | SH |  | DFND |  | 33790 | 0 | 0 |
| MARATHON DIGITAL HOLDINGS IN | COM | 565788106 |  | 1046 | 775000 | SH | Put | DFND |  | 775000 | 0 | 0 |
| MARLIN TECHNOLOGY CORP | UNIT 99/99/9999 | G58411128 |  | 178 | 17650 | SH |  | DFND |  | 17650 | 0 | 0 |
| MASON INDUSTRIAL TECHNOLGY I | COM CL A | 57520Y106 |  | 186 | 18589 | SH |  | DFND |  | 18589 | 0 | 0 |
| MFS HIGH YIELD MUN TR | SH BEN INT | 59318E102 |  | 579 | 185095 | SH |  | DFND |  | 185095 | 0 | 0 |
| MFS INVT GRADE MUN TR | SH BEN INT | 59318B108 |  | 391 | 54932 | SH |  | DFND |  | 54932 | 0 | 0 |
| MOTIVE CAPITAL CORP II | UNIT 99/99/9999 | G6293R122 |  | 511 | 50000 | SH |  | DFND |  | 50000 | 0 | 0 |
| NEWBURY STREET ACQUISITN COR | *W EXP 04/30/202 | 65101L112 |  | 1 | 12413 | SH |  | DFND |  | 12413 | 0 | 0 |
| NEWBURY STREET ACQUISITN COR | COM | 65101L104 |  | 274 | 27403 | SH |  | DFND |  | 27403 | 0 | 0 |
| NEXPOINT DIVERSIFIED REL ET | COM NEW | 65340G205 |  | 1012 | 90311 | SH |  | DFND |  | 90311 | 0 | 0 |
| NORDSTROM INC | COM | 655664100 |  | 3 | 200000 | SH | Put | DFND |  | 200000 | 0 | 0 |
| NUVEEN AMT-FREE MUN VALUE FD | COM | 670695105 |  | 363 | 26690 | SH |  | DFND |  | 26690 | 0 | 0 |
| NUVEEN MUN VALUE FD INC | COM | 670928100 |  | 734 | 85325 | SH |  | DFND |  | 85325 | 0 | 0 |
| NUVEEN N Y MUN VALUE FD | COM | 67062M105 |  | 379 | 45858 | SH |  | DFND |  | 45858 | 0 | 0 |
| NUVEEN NEW YORK AMT QLT MUNI | COM | 670656107 |  | 647 | 63017 | SH |  | DFND |  | 63017 | 0 | 0 |
| OFS CAP CORP | COM | 67103B100 |  | 406 | 39787 | SH |  | DFND |  | 39787 | 0 | 0 |
| OXUS ACQUISITION CORP | *W EXP 99/99/999 | G6859L121 |  | 1 | 23300 | SH |  | DFND |  | 23300 | 0 | 0 |
| PERELLA WEINBERG PARTNERS | CLASS A COM | 71367G102 |  | 98 | 10000 | SH |  | DFND |  | 10000 | 0 | 0 |
| PGIM SHORT DUR HIG YLD OPP F | COM | 69355J104 |  | 471 | 32071 | SH |  | DFND |  | 32071 | 0 | 0 |
| PIMCO GLOBAL STOCKSPLS INCM | COM | 722011103 |  | 136 | 19644 | SH |  | DFND |  | 19644 | 0 | 0 |
| PIMCO NEW YORK MUN INCOME FD | COM | 72201E105 |  | 164 | 24040 | SH |  | DFND |  | 24040 | 0 | 0 |
| PIONEER MUN HIGH INCOME OPPO | COMMON STOCK | 723760104 |  | 885 | 83134 | SH |  | DFND |  | 83134 | 0 | 0 |
| POWER REIT | COM | 73933H101 |  | 61 | 15423 | SH |  | DFND |  | 15423 | 0 | 0 |
| REVELSTONE CAPITAL ACQSTN CO | UNIT 12/17/2026 | 76137R205 |  | 203 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| SELECT SECTOR SPDR TR | FINANCIAL | 81369Y605 |  | 4 | 200000 | SH | Put | DFND |  | 200000 | 0 | 0 |
| SEVEN HILLS REALTY TRUST | COM | 81784E101 |  | 1935 | 212846 | SH |  | DFND |  | 212846 | 0 | 0 |
| SHAPEWAYS HOLDINGS INC | *W EXP 09/29/202 | 81947T110 |  | 0 | 11950 | SH |  | DFND |  | 11950 | 0 | 0 |
| SOUTHPORT ACQUISITION CORP | UNIT 99/99/9999 | 84465L204 |  | 203 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| SPDR GOLD TR | GOLD SHS | 78463V107 |  | 0 | 20000 | SH | Call | DFND |  | 20000 | 0 | 0 |
| SPDR S 500 ETF TR | TR UNIT | 78462F103 |  | 6 | 50000 | SH | Put | DFND |  | 50000 | 0 | 0 |
| SPREE ACQUISITION CORP 1 LTD | UNIT 99/99/9999 | G83745110 |  | 204 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| ST ENERGY TRANSITION I LTD | UNIT 99/99/9999 | G8465L123 |  | 198 | 19300 | SH |  | DFND |  | 19300 | 0 | 0 |
| SWIFTMERGE ACQUISITION CORP | UNIT 12/13/2026 | G63836129 |  | 303 | 30000 | SH |  | DFND |  | 30000 | 0 | 0 |
| TAIWAN SEMICONDUCTOR MFG LTD | SPONSORED ADS | 874039100 |  | 3 | 60000 | SH | Put | DFND |  | 60000 | 0 | 0 |
| TARGET GLOBAL ACQUISI I CORP | UNIT 99/99/9999 | G8675N117 |  | 205 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| TERAWULF INC | COM | 88080T104 |  | 233 | 349718 | SH |  | DFND |  | 349718 | 0 | 0 |
| TOLL BROTHERS INC | COM | 889478103 |  | 10 | 50000 | SH | Put | DFND |  | 50000 | 0 | 0 |
| TRAJECTORY ALPHA ACQUISITION | UNIT 99/99/9999 | 89301B203 |  | 201 | 20000 | SH |  | DFND |  | 20000 | 0 | 0 |
| VISCOGLIOSI BROS ACQUISTN CO | UNIT 03/18/2027 | 92838K209 |  | 201 | 19900 | SH |  | DFND |  | 19900 | 0 | 0 |
| VISTRA CORP | COM | 92840M102 |  | 603 | 26000 | SH |  | DFND |  | 26000 | 0 | 0 |
| WAYFAIR INC | CL A | 94419L101 |  | 12 | 51300 | SH | Put | DFND |  | 51300 | 0 | 0 |
| WEJO GROUP LIMITED | *W EXP 11/18/202 | G9525W117 |  | 1 | 26566 | SH |  | DFND |  | 26566 | 0 | 0 |
| WESTERN ACQSTN VENTURES CORP | *W EXP 09/01/202 | 95758L115 |  | 2 | 30000 | SH |  | DFND |  | 30000 | 0 | 0 |
| WESTERN ACQSTN VENTURES CORP | COM | 95758L107 |  | 347 | 30000 | SH |  | DFND |  | 30000 | 0 | 0 |
| WESTERN ASSET INTER MUNI FD | COM | 958435109 |  | 274 | 36068 | SH |  | DFND |  | 36068 | 0 | 0 |
| WESTERN ASSET MANAGED MUNS F | COM | 95766M105 |  | 1178 | 117003 | SH |  | DFND |  | 117003 | 0 | 0 |
| WESTERN ASST INFLTN LKD INM | COM SH BEN INT | 95766Q106 |  | 225 | 26169 | SH |  | DFND |  | 26169 | 0 | 0 |
| WESTERN AST INFL LKD OPP  I | COM | 95766R104 |  | 1111 | 121719 | SH |  | DFND |  | 121719 | 0 | 0 |

---