Butterfly Network (BFLY) 10-Q 2025 Q3 Quarterly report

Exhibit 32.1

CERTIFICATIONS UNDER SECTION 906

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of Butterfly Network, Inc., a Delaware corporation (the “Company”), does hereby certify, to such officer’s knowledge, that:

The Quarterly Report for the quarter ended September 30, 2025 (the “Form 10-Q”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: October 31, 2025	/s/ Joseph M. DeVivo
	Joseph M. DeVivo
	Chief Executive Officer, President, and Chairman of the Board

Dated: October 31, 2025	/s/ Megan Carlson, CPA
	Megan Carlson, CPA
	Interim Chief Financial Officer