Rainier Acquisition Corp

Overview

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• TickerRNAQ on Nasdaq¹
• IndustryBlank Checks¹
• HeadquartersNew York, New York¹
• Incorporated inCayman Islands²
• Business address1 Penn Plaza, 48Th Floor, New York, Ny 10119²
• Filer category, Emerging growth company²

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Corporate structure

Rainier Acquisition Corp sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Leadership

Who has led Rainier Acquisition Corp, and when. Pick a name to see everywhere that person has worked.

• Chief executive officerGbolahan Amusa Aug 26, 2026 to now³
• Chief financial officerGuy Barudin Aug 26, 2026 to now⁴

Timeline

1. Sep 11, 20268-K Other events⁸
2. Sep 3, 20268-K Unregistered sale of shares; Other events⁹
3. Aug 28, 20268-K Entered a material agreement; Unregistered sale of shares; Executive or director change¹⁰
4. Aug 26, 2026New chief executive Gbolahan Amusa becomes CEO³

Filings

22 filings to the SEC since October 2021: 3 major events, 9 insider forms, 3 large holders, 7 other. The latest 20:

1. Sep 11, 20268-K EDGAR
2. Sep 8, 20263 OWNERSHIP DOCUMENT EDGAR
3. Sep 3, 2026SCHEDULE 13G EDGAR
4. Sep 3, 2026SCHEDULE 13G EDGAR
5. Sep 3, 20268-K EDGAR
6. Sep 2, 20264 OWNERSHIP DOCUMENT EDGAR
7. Sep 1, 2026SCHEDULE 13G EDGAR
8. Aug 28, 20264 OWNERSHIP DOCUMENT EDGAR
9. Aug 28, 20268-K EDGAR
10. Aug 27, 2026424B4 EDGAR
11. Aug 26, 2026EFFECT EDGAR
12. Aug 26, 2026CERT EDGAR
13. Aug 26, 20263 OWNERSHIP DOCUMENT EDGAR
14. Aug 26, 20263 OWNERSHIP DOCUMENT EDGAR
15. Aug 26, 20263 OWNERSHIP DOCUMENT EDGAR
16. Aug 26, 20263 OWNERSHIP DOCUMENT EDGAR
17. Aug 26, 20263 OWNERSHIP DOCUMENT EDGAR
18. Aug 26, 20263 OWNERSHIP DOCUMENT EDGAR
19. Aug 25, 20268-A12B EDGAR
20. Aug 24, 2026S-1/A EDGAR

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Insider trades

2 open-market trades by officers, directors and large owners since October 2021: 2 buys and 0 sales. Grants, option exercises and gifts are left out.

From Forms 4 filed with the SEC.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

• 683 Capital Management, LLCSCHEDULE 13G, 2 filings Sep 3, 2026¹¹
• MMCAP International Inc. SPCSCHEDULE 13G, 1 filing Sep 1, 2026¹²

SEC filer profile

How Rainier Acquisition Corp is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

• Name on EDGARRainier Acquisition Corp¹
• CIK0002147219
• Employer ID (EIN)98-1782716¹
• Filer status<br>emerging growth company¹
• Incorporated inCayman Islands¹
• Fiscal year endsDecember 31¹
• Industry code (SIC)6770 Blank Checks¹
• SEC reviewing officeOffice of Life Sciences, Division of Corporation Finance¹
• Business address1 Penn Plaza, 48Th Floor, New York, NY 10119¹
• Phone646-984-6215¹
• On EDGAR sinceJul 24, 2026¹
• Filings22 in all: 3 (7), 8-K (3), SCHEDULE 13G (3), 4 (2), 424B4 (1), 8-A12B (1), CERT (1), DRS (1)¹
  All 11 form types

  EFFECT (1), S-1 (1), S-1/A (1)

• Latest filingsLatest 8-K (8-K) Sep 11, 2026