8-K filed October 16, 2025, 7:59 PM ET ticker HSDT CIK 0001610853

other material confidence high sentiment negative materiality 0.65

Solana Company auditor switches from Baker Tilly to CBIZ; prior reports flagged going concern

Solana Co

Baker Tilly US, LLP resigned as independent auditor on October 15, 2025; Audit Committee accepted.
No disagreements or reportable events in fiscal years 2023, 2024 or interim period through Oct 15, 2025.
Baker Tilly's prior reports contained explanatory paragraph expressing substantial doubt about going concern.
New auditor CBIZ CPAs P.C. appointed for fiscal year ending December 31, 2025; no prior consultations.

item 4.01 item 9.01

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company_name: Solana Co
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Source-grounded claims

2627a8b490d3f93aa6bae756ca4906584f0ba156

Solana Co engaged CBIZ CPAs P.C. as its auditor.

On October 15, 2025, the Committee approved the appointment of CBIZ CPAs P.C. (“CBIZ CPAs”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025.

SEC 8-K Item 4.01/4.02 confidence 0.9 SEC evidence

ef70a427826d8f18809a7e240ef5c5b9547303a9

Baker Tilly US, LLP resigned as auditor of Solana Co.

On October 15, 2025, the Audit Committee (the “Committee”) of the Board of Directors of Solana Corporation (formerly known as Helius Medical Technologies, Inc.) (the “Company”) received the resignation of Baker Tilly US, LLP (“Baker Tilly”) as the Company’s independent registered public accounting firm, effective immediately.

SEC 8-K Item 4.01/4.02 confidence 0.9 SEC evidence

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On October 15, 2025, the Committee approved the appointment of CBIZ CPAs P.C. (“CBIZ CPAs”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025.

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On October 15, 2025, the Committee approved the appointment of CBIZ CPAs P.C. (“CBIZ CPAs”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025.

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On October 15, 2025, the Committee approved the appointment of CBIZ CPAs P.C. (“CBIZ CPAs”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025.

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On October 15, 2025, the Committee approved the appointment of CBIZ CPAs P.C. (“CBIZ CPAs”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025.

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On May 21, 2026, the Audit Committee and Board of Directors approved the engagement of M&K CPAs, PLLC as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025, subject to completion of customary client acceptance procedures and execution of a final engagement letter.

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On October 15, 2025, the Committee approved the appointment of CBIZ CPAs P.C. (“CBIZ CPAs”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025.

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On October 15, 2025, the Committee approved the appointment of CBIZ CPAs P.C. (“CBIZ CPAs”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025.

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On October 15, 2025, the Committee approved the appointment of CBIZ CPAs P.C. (“CBIZ CPAs”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025.

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On April 29, 2026, RCM Technologies, Inc. (the “Company”) dismissed EisnerAmper LLP (“Eisner”) as its independent registered public accounting firm.

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