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425 ·Filed Aug 14, 2026

TREO

Plum III Merger Corp.
NEUTRAL
Impact 3/10
Horizonimmediate Processed2mo ago SEC0001213900-26-090305
Rule 425 M&A communications
Actionable Insight • Neutral

This is a routine auditor change with no negative signals — the resignation follows a business combination between the audit firms. Traders should focus on upcoming deal-related filings (e.g., merger proxy or closing announcements) for material information on the Tactical Resources combination.

DirectionNeutral
Confidencehigh
Horizonimmediate
Latest settled — T+20d
TREO ▼ -81.30% at T+20d
NEUTRAL call -81.30% · α vs SPY -79.77% · entry $26.20 → $4.90
Next anchor: T+60d in 12d
Entry = T+0 close
Aug 14, 2026
via day close
T+1d
0.00%
call 0.00% · α +0.68%
$26.20
settled 2mo ago
T+5d
-78.70%
call -78.70% · α -77.51%
$5.58
settled 2mo ago
T+20d
-81.30%
call -81.30% · α -79.77%
$4.90
settled 6w ago
T+60d
Pending
in 12d

Price Chart

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Executive Summary

This 425 filing by Plum III Merger Corp. (subject company of the pending business combination with Tactical Resources Corp.) announces the resignation of Marcum LLP as independent auditor, effective June 3, 2026, following the acquisition of Marcum's attest business by CBIZ CPAs P.C. in November 2024. The filing is a routine auditor change disclosure with no disagreements or adverse opinions, and Marcum confirmed its agreement with the statements. It provides no updates on the merger timeline, deal terms, or financial outlook.

Key Facts

  • Marcum LLP resigned as independent registered public accounting firm of Plum Acquisition Corp. III on June 3, 2026.
  • CBIZ CPAs P.C. acquired Marcum's attest business effective November 1, 2024, but Marcum continued serving through June 3, 2026.
  • No disagreements or reportable events occurred between the company and Marcum during fiscal years 2024, 2025, or through June 3, 2026, except for a previously disclosed material weakness in internal controls.
  • Marcum's audit reports for fiscal years 2024 and 2025 were unqualified with no adverse opinions.
  • The filing is made under Rule 425 and references a pending business combination with Tactical Resources Corp., but provides no new details on the merger.

Financial Impact

No financial impact disclosed — auditor resignation is procedural with no disagreements or qualifications.

Risk Factors

  • Auditor transition could cause a brief administrative delay but is unlikely to affect merger timeline.
  • Material weakness in internal controls (previously disclosed) remains an unresolved risk.
  • No assurance the pending business combination will close on schedule or at all.

Investment Themes

Materials & Mining

Documents Analyzed

This report is based on 5 SEC documents filed with EDGAR.

DocumentAccession Number
425 Filing (Primary)0001213900-26-090305
Document: ea030228001ex16-1.htm0001213900-26-090305
Document: 0001213900-26-090305-index-headers.html0001213900-26-090305
Document: 0001213900-26-090305-index.html0001213900-26-090305
Document: 0001213900-26-090305.txt0001213900-26-090305
2 reports for TREO
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Reports for TREO — sortable, filterable
TypeNow
Aug 14, 2026
10w ago
425
NEUTRAL ★ 3/10
$26.20 $4.90▼ −81.30%▼ −79.77%$1.64 (−93.74%)
Jul 31, 2026
12w ago
425
NEUTRAL ★ 3/10
—awaiting T+20——
Showing 2 of 2

US Market Status

Market Closed — Opens Thu (11h 7m)

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Report published Aug 14, 2026