ALOY · Annual Report (Form 10-K) · Filed February 23, 2026

Realloys Inc — 10-K exhibit

ex_921051.htm

Exhibit 32.1

CERTIFICATION 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 of Blackboxstocks Inc. (the “Company”) on Form 10-K for the period ending December 31, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gust Kepler, Principal Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)

The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)

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

/s/ Gust Kepler

Gust Kepler

Principal Executive Officer

February 23, 2026

This certification accompanies the Report pursuant to §906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company or purposes of §18 of the Securities Exchange Act of 1934, as amended.

A signed original of this certification has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

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