Exhibit 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of Bleichroeder Acquisition Corp. II (the “Company”) for the fiscal year ended December 31, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Annual Report”), I, Andrew Gundlach, Chief Executive Officer of the Company, hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1.	The Annual Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2.	The information contained in the Annual Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 16, 2026	By:	/s/ Andrew Gundlach
		Andrew Gundlach
		Chief Executive Officer, President and Chairman
		(Principal Executive Officer)