Company: BTC
Filing Date: 2025-04-01
Form Type: POS AM
Source: 0001193125-25-070549
Chunk: 0

Company: Grayscale Bitcoin Mini Trust ETF
Filing Date: 2025-04-01
Form: POS AM
Chunk 0
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As filed with the Securities and Exchange Commission on April 1, 2025 Registration No. 333-277837 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 1 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Grayscale Bitcoin Mini Trust ETF (Exact Name of Registrant as Specified in Its Charter)

| Delaware                        |     |                         6221 |     | 99-6383052            |
| (State or Other Jurisdiction of 
 Incorporation or Organization)  |     | -Primary Standard Industrial 
   Classification Code Number |     | -I.R.S. Employer      
 Identification Number |

c/o Grayscale Investments Sponsors, LLC 290 Harbor Drive, 4th Floor Stamford, Connecticut 06902 (212) 668-1427 (Address, Including Zip Code, and Telephone Number, Including Area Code, of Registrant’s Principal Executive Offices) Edward McGee Chief Financial Officer Grayscale Investments Sponsors, LLC 290 Harbor Drive, 4th Floor Stamford, Connecticut 06902 (212) 668-1427 (Name, Address, Including Zip Code, and Telephone Number, Including Area Code, of Agent For Service) Copies to: Joseph A. Hall Daniel P. Gibbons Davis Polk & Wardwell LLP 450 Lexington Avenue New York, New York 10017 (212) 450-4000 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. ☒ If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐ If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐ If this form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐ Indicate by