Company: RAIN
Filing Date: 2025-11-07
Form Type: 424B3
Source: 0001213900-25-107399
Chunk: 1

Company: Rain Enhancement Technologies Holdco, Inc.
Filing Date: 2025-11-07
Form: 424B3
Chunk 1
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 Class A Common Stock was $4.99 per share and the closing price for our Warrants was $0.16 per Warrant.

We are an “emerging growth company”
as defined under the federal securities laws, and, as such, may elect to comply with certain reduced public company reporting requirements
for this and future filings.

INVESTING IN OUR SECURITIES INVOLVES RISKS. YOU SHOULD CAREFULLY CONSIDER THE RISK FACTORS SET FORTH UNDER THE SECTION ENTITLED “RISK FACTORS” ON PAGE 12 OF THE PROSPECTUS, BEFORE MAKING ANY DECISION WHETHER TO INVEST IN OUR SECURITIES.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this Supplement or the accompanying Prospectus. Any representation to the contrary is a criminal offense.

<div align='center'>The date of this prospectus supplement is November 7, 2025.</div>