As filed with U.S. Securities and Exchange Commission on September 23, 2025.

Registration No. 333-287674

UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

Amendment No. 6

to

FORM S-1REGISTRATION STATEMENTUNDERTHE SECURITIES ACT OF 1933

Crown Reserve Acquisition Corp. I(Exact name of registrant as specified in its charter)

Cayman Islands

N/A

(State or other jurisdiction ofincorporation or organization)

(Primary Standard IndustrialClassification Code Number)

(I.R.S. EmployerIdentification Number)

Conyers Trust Company (Cayman) LimitedPO Box 2681Grand Cayman KY1-1111,Cayman IslandsTel: (813) 501-3533(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Prashant PatelChief Executive Officer1202 Merry Water DrLutz, Florida 33548Tel: (727) 692-8610(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies to:

Lee McIntyre

Norton Rose Fulbright US LLP

1301 Avenue of the Americas

New York, New York 10019

Tel: (212) 318-3000

Alex Davies

Conyers Dill & Pearman LLP

SIX, 2nd Floor, Cricket Square,

Grand Cayman KY1-1111,

Cayman Islands

Tel: (345) 945-3901

James R. Brown

Douglas C. Lionberger

Holland & Knight LLP

811 Main Street, Suite 2500

Houston, Texas 77002

Tel: (713) 244-8218

Approximate date of commencement of proposed sale to the public: As soon as practicable after the effective date of this registration statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933 check the following box ☐