# EDGAR Filing Document

**Accession Number:** 0001854461
**File Stem:** 0001104659-23-026770
**Filing Date:** 2023-2
**Character Count:** 2921
**Document Hash:** f8bcb0841e514cc8a5486e1187fa8f17
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-23-026770.hdr.sgml**: 20230228

**ACCESSION NUMBER**: 0001104659-23-026770

**CONFORMED SUBMISSION TYPE**: 15-12G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230228

**DATE AS OF CHANGE**: 20230228

**EFFECTIVENESS DATE**: 20230228

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Mount Rainier Acquisition Corp.
- **CENTRAL INDEX KEY:** 0001854461
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 15-12G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40870
- **FILM NUMBER:** 23686312

**BUSINESS ADDRESS:**
- **STREET 1:** 256 WEST 38TH STREET 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10018
- **BUSINESS PHONE:** 12127854680

**MAIL ADDRESS:**
- **STREET 1:** 256 WEST 38TH STREET 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10018

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 15**

**CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.**

Commission File Number: **001-40870**

**Mount Rainier Acquisition Corp.**

(Exact name of registrant as specified in its charter)

**256 W. 38th Street, 15th Floor**

**New York, NY 10018**

**(212) 785-4680**

(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)

**Units, each consisting of one share of common stock, $0.0001 par value per share, and one warrant**

**Common Stock, par value $0.0001 per share**

**Warrants, each whole warrant exercisable for three-fourths of one share of common stock at an exercise price of $11.50**

(Title of each class of securities covered by this Form)

**None**

(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)

Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

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| | |
|:---|:---|
| Rule 12g-4(a)(1) | ⌧ |
| Rule 12g-4(a)(2) | ¨ |
| Rule 12h-3(b)(1)(i) | x |
| Rule 12h-3(b)(1)(ii) | ¨ |
| Rule 15d-6 | ¨ |
| Rule 15d-22(b) | ¨ |

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Approximate number of holders of record as of the certification or notice date: 1

Pursuant to the requirements of the Securities Exchange Act of 1934, Mount Rainier Acquisition Corp. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person

Date: February 28, 2023

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| | |
|:---|:---|
| **MOUNT RAINIER ACQUISITION CORP.** | **MOUNT RAINIER ACQUISITION CORP.** |
| By: | /s/ Matthew Kearney  |
| Name: | Matthew Kearney |
| Title: | Authorized Signatory |

---