Company: LIMN
Filing Date: 2025-04-30
Form Type: 8-K12B
Source: 0001104659-25-042489
Chunk: 0

Company: Liminatus Pharma, Inc.
Filing Date: 2025-04-30
Form: 8-K12B
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

April 30, 2025

Date of Report (Date of earliest event reported)</div>

| LIMINATUS PHARMA, INC.                                 |
| (Exact name of registrant as specified in its charter) |

| Delaware                     |     |              |     | 93-2710748          |
| (State or other jurisdiction |     | (Commission  |     | (I.R.S. Employer    |
| of incorporation)            |     | File Number) |     | Identification No.) |

| 6 Centerpointe Drive #625, La Palma, CA  |     |     90623 |
| (Address of principal executive offices) |     | -Zip Code |

<div align='center'>Registrant’s telephone number, including
area code: ( 213) 273-5453

Iris Parent Holding Corp.

6 Centerpointe Drive #625

La Palma, CA 90623

(Former name or former address, if changed since
last report)</div>

Check the appropriate box below if the Form 8-K
filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

| ¨ | Written communications pursuant to Rule 425 under the Securities Act             |
| ¨ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act               |
| ¨ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act |
| ¨ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act |

Securities registered pursuant to Section 12(b)
of the Act:

| Title of each class |     | Trading Symbol(s) |     | Name of each exchange on which registered |
| Common Stock        |     | LIMN              |     | The Nasdaq Stock Market LLC               |
| Warrants            |     | LIMNW             |     | The Nasdaq Stock Market LLC               |

Indicate by check mark whether the registrant
is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of