Profusa dismisses CBIZ as auditor and engages WithumSmith+Brown for fiscal 2026

Profusa, Inc.

On October 5, 2026, Profusa dismissed CBIZ CPAs P.C. as independent registered public accounting firm; Audit Committee and Board approved.
CBIZ's report on fiscal year ended December 31, 2025 had a going-concern explanatory paragraph but no adverse opinion or disclaimer.
No disagreements or reportable events except material weaknesses in segregation of duties, review controls, and technical accounting; not remediated as of June 30, 2026.
On October 6, 2026, Profusa engaged WithumSmith+Brown, PC for fiscal year ending December 31, 2026; approval occurred September 30, 2026.
Exhibit 16.1 is CBIZ's letter dated October 9, 2026; the filing is signed by CFO Fred Knechtel.

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