Company: RNAC
Filing Date: 2025-01-10
Form Type: POS AM
Source: 0001140361-25-000685
Chunk: 1

Company: Cartesian Therapeutics, Inc.
Filing Date: 2025-01-10
Form: POS AM
Chunk 1
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 check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

| Large accelerated filer |     | ☐ | ​ | ​ | Accelerated filer         |     | ☒ |
| Non-accelerated filer   |     | ☐ | ​ | ​ | Smaller reporting company |     | ☒ |
|                         |     |   | ​ | ​ | Emerging growth company   |     | ☐ |

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐ The Registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until the registration statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine. EXPLANATORY NOTE TERMINATION OF REGISTRATION STATEMENT Cartesian Therapeutics, Inc. (the “Company”) filed with the Securities and Exchange Commission (the “SEC”) a Registration Statement on Form S-1 (File No. 333-281204) on August 2, 2024, as amended by (i) Pre-Effective Amendment No. 1 to the Registration Statement on Form S-1, filed with the SEC on September 9, 2024, and (ii) Pre-Effective Amendment No. 2 to the Registration Statement on Form S-1, filed with the SEC on September 20, 2024, which was declared effective by the SEC on October 1, 2024(as amended, the “Original Registration Statement”). The Original Registration Statement was filed to register an aggregate of up to 6,501,150 shares of the Company’s common stock, $0.0001 par value per share (“common stock”), which consisted of (i) up to 3,563,247 shares of common stock