---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-115608"
form_type: "8-K"
ticker: null
cik: "0001831978"
company_name: "Newbury Street Acquisition Corp"
filed_at: "2025-11-26T23:59:59+00:00"
generated_at: "2026-05-16T16:34:45.986764+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Marcum LLP resigns as auditor for Newbury Street Acquisition Corporation

## Summary
- Marcum resigned as independent registered public accounting firm effective November 21, 2025.
- No disagreements on accounting or auditing scope occurred during the two most recent fiscal years.
- Material weaknesses in internal control over financial reporting were previously disclosed in 2022 and 2023 10-Ks and March 2024 10-Q.
- Marcum's prior audit reports contained an explanatory paragraph regarding going concern.
- Marcum's letter to the SEC, dated November 26, 2025, is filed as Exhibit 16.1.

## SEC filing metadata
- accession: 0001213900-25-115608
- form_type: 8-K
- cik: 0001831978
- company_name: Newbury Street Acquisition Corp
- filed_at: 2025-11-26T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1831978/000121390025115608/0001213900-25-115608-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1831978/000121390025115608/ea0267541-8k_newbury.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-115608
- JSON: https://secwatch.observer/filing/0001213900-25-115608.json
- Plain text: https://secwatch.observer/filing/0001213900-25-115608.txt

## Source-grounded claims
- claim_id: d30e4592bd40f644eb52424b4a9442e4e951a034
  claim: Marcum LLP resigned as auditor of Newbury Street Acquisition Corp.
  evidence_excerpt: On November 21, 2025, the Audit Committee of the Board of Directors of Newbury Street Acquisition Corporation (the “Company”) received a letter from Marcum LLP (“Marcum”) notifying the Company of Marcum’s resignation as the independent registered public accounting firm for the Company, effective as of the same date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1831978/000121390025115608/0001213900-25-115608-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.