PLMJF SEC filings, in plain English
Everything Plum Acquisition Corp. III has filed with the SEC that we hold — 40 filings, newest first, 10 with a plain-English summary of what changed and why it matters. Every row links to the primary document on EDGAR, so you can check the source rather than trust us.
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What changed: Marcum LLP resigned as Plum Acquisition Corp. III's independent registered public accounting firm on June 3, 2026, following CBIZ CPAs' acquisition of Marcum's attest business effective November 1, 2024. No disagreements or reportable events were disclosed, except for a previously reported material weakness in internal control over financial reporting. Why it matters: Auditor changes on a searching SPAC can signal administrative disruption or foreshadow delays in periodic reporting and deal readiness. The disclosed material weakness in internal controls, while not a disagreement, is a flag for investors monitoring the SPAC's ability to timely complete a business combination.
What changed: Marcum LLP resigned as Plum Acquisition Corp. III's independent auditor effective June 3, 2026, following CBIZ CPAs' acquisition of Marcum's attest business (effective Nov 1, 2024). No disagreements were reported, but a material weakness in internal control over financial reporting was disclosed for FY2025 and Q1 2026. Why it matters: Auditor resignation during the SPAC's search phase creates uncertainty about financial reporting continuity and could complicate any future business combination timeline. The disclosed material weakness in internal controls may require remediation before the company can complete a deal.
What changed: Plum Acquisition Corp. III completed its change of jurisdiction of incorporation from the Cayman Islands to British Columbia, effective July 27, 2026, by way of a continuation under Section 206 of the Cayman Companies Act and the BCBCA, in anticipation of closing its business combination and as required by that agreement. On effectiveness each Class A ordinary share, each warrant and each unit of one share plus one-third of a warrant became a registered security of the British Columbia entity. Why it matters: Domestication changes the law governing shareholder rights before the deal closes: Cayman protections and Cayman redemption mechanics give way to the BCBCA, and the trust redemption right that public holders still have now sits under a different corporate statute. The units, shares and warrants carry across unchanged in economic terms, but holders should note the vehicle is a Canadian company from July 27, 2026, which also affects tax treatment and the exchange listing arrangements for the combined company.
What changed: Plum Acquisition Corp. III filed under Rule 425 the same disclosure of its completed continuation from the Cayman Islands to the Province of British Columbia, effective July 27, 2026 on registration in British Columbia and concurrent Cayman de-registration. The filing states the domestication was undertaken in anticipation of the expected closing of the business combination and as required by the Business Combination Agreement among Plum, Plum III Amalco Corp. and Plum III Merger Corp. Existing Class A ordinary shares, warrants and units became registered securities of the Canadian entity. Why it matters: Filing under Rule 425 marks this as deal communication, which confirms the domestication is a step in the pending combination rather than a standalone restructuring — the amalgamation subsidiaries named in the agreement are British Columbia entities, so the SPAC had to move jurisdiction to complete the structure. For a public holder still deciding whether to redeem, the redemption right survives the move but is now exercised against a company governed by the BCBCA rather than Cayman law.
What changed: Plum III Merger Corp. filed under Rule 425 in respect of Plum Acquisition Corp. III, describing the August 22, 2024 Business Combination Agreement with Plum III Amalco Corp., Plum III Merger Corp. as Pubco and Tactical Resources Corp., as amended December 10, 2024, January 28, 2025 and August 22, 2025. The structure is a continuation of Plum from the Cayman Islands to British Columbia, an amalgamation of Plum and Pubco under a BCBCA plan of arrangement with Pubco surviving, then an amalgamation of Tactical and Amalco with Tactical surviving as a wholly owned subsidiary of Pubco. Why it matters: Three amendments across two years show how long this combination has taken to reach a vote, and the multi-step Canadian amalgamation explains why the SPAC had to redomesticate before closing. For a public holder still holding Plum units the redemption right remains until the closing, and the structure means their shares ultimately become Pubco shares governed by British Columbia law. The July 20, 2026 Tactical publication referenced in the filing is not described in the captured text.
What changed: Plum Acquisition Corp. III called an extraordinary general meeting for July 29, 2026 at 10:00 a.m. Eastern Time to extend its Termination Date from July 30, 2026 to December 31, 2026 by special resolution amending its Fourth Amended and Restated Memorandum and Articles. As of July 15, 2026 the trust held approximately $501,297, giving a redemption price of about $11.80 per public share. The Class A ordinary shares, no longer listed on a national securities exchange, last traded at $10.40 on May 1, 2026. Why it matters: The trust floor is $11.80 a share but the trust is down to roughly $501,000 - fewer than 43,000 public shares remain, so this is a shell with essentially no float. The market price of $10.40 sits $1.40 below trust, meaning redemption is worth materially more than selling. Holders who do not redeem carry deal risk to December 31, 2026 with no disclosed contribution accreting the trust in the meantime.
What changed vs 2025-06-24deadline 2026-07-30 → 2026-12-31combination deadline, trust account1 moved · 1 with no prior record of ours
- Combination deadline
- 2026-07-302026-12-31
- Trust account
- $5.9M · unchanged
SpacBrain reads this as 154 days later than the previous record.
The clause …“redeem 100 per cent of the Public Shares if the Company does not consummate a Business Combination by December 31, 2026 or such earlier date as determined by the Board of Directors; or (b) with respect to any other provision relating to”…
The clause “Account. In the event of a liquidation, the Sponsor will not receive any monies held in the Trust Account as a result of its ownership of 5,933,508 Class B Ordinary Shares and 1,977,836 Founder Warrants (after giving effect to the”…
Read from stored SEC filing text by a regex — no model is involved — and each side links to the filing it came from. “Not previously extracted” is a statement about our record, not about the company: the clause may be present in wording we do not match.
What changed: Plum Acquisition Corp. III furnished, as Exhibit 99.1, Tactical Resources Corp.'s unaudited pro forma condensed consolidated balance sheet and income statement as of April 30, 2026, prepared to show the impact of the Asset Purchase Agreement entered on April 7, 2026 among Plum III Merger Corp. as PubCo, Sierra Blanca Quarry, LLC of Texas and Tactical. The filing states the pro formas are illustrative only, rest on Tactical management's best estimates and are not necessarily indicative of the position or results after closing of the business combination among Plum, Tactical and PubCo. Why it matters: For a Plum public holder still weighing redemption, this is the first look at what the target's balance sheet looks like after it acquires the Sierra Blanca quarry — the asset the combined company's value rests on. The disclaimers are stronger than usual: illustrative only, management estimates, and results after closing may differ significantly. That is a caution to treat the pro formas as a structure, not a forecast, when comparing against the trust value available on redemption.
What changed: Plum Acquisition Corp. III filed under Rule 425 the same furnishing of Tactical Resources Corp.'s unaudited pro forma condensed consolidated balance sheet and income statement as of April 30, 2026, reflecting the April 7, 2026 Asset Purchase Agreement among PubCo, Sierra Blanca Quarry, LLC and Tactical. The filing repeats that the pro formas are illustrative, based on Tactical management's best estimates, and not necessarily indicative of the position or results on closing of the business combination among Plum, Tactical and PubCo. Why it matters: Filing the pro formas as deal communication under Rule 425 puts them in front of shareholders as part of the solicitation rather than as incidental disclosure, which means they are intended to inform the redemption and voting decision. The asset purchase they model is separate from the business combination itself, so a Plum holder is being asked to assess two transactions at once — the quarry acquisition by the target and the merger of that target into the listed vehicle.
What changed: Plum Acquisition Corp. III filed a preliminary proxy for an extraordinary general meeting to extend by special resolution its business combination deadline from July 30, 2026 to December 31, 2026. The board says that without it Plum would be forced to liquidate even if shareholders favoured completing the deal. Public shareholders may redeem for their pro rata share of trust; at July 2, 2026 the redemption price was about $11.80 per share on roughly $501,297 on deposit. The Class A shares last traded at $10.40 on May 1, 2026. Why it matters: The trust holds only about $501,297 in total, so at roughly $11.80 per share the remaining public float is around 42,000 shares — redemptions have taken out essentially the entire public class. The floor is high but applies to almost nothing, and the shares last traded at $10.40, a $1.40 discount to redemption value. For anyone still holding, redeeming captures that spread; the extension to December 31, 2026 exists purely to keep the vehicle alive long enough to close the Tactical Resources deal.
- What changed vs 2025-10-31deadline 2026-07-30 → 2026-07-31sponsor loan $2.0M → $2.2M
combination deadline, sponsor loans outstanding, trust account +22 moved · 3 with no prior record of ours
- Combination deadline
- 2026-07-302026-07-31
- Sponsor loans outstanding
- $2.0M$2.2M
- Trust account
- $25.6Mnot matched in this filing
- Going-concern doubt
- stated · unchanged
- Mandate language
- we intend to target businesses larger than we could acquire …not matched in this filing
SpacBrain reads this as 1 days later than the previous record.
The clause …“the Second Promissory Note was further amended to extend the maturity date to July 31, 2026. If the Company does not consummate the Business Combination or there is a liquidation, the Second Sponsor Promissory Note will not be repaid”…
SpacBrain reads this as the sponsor has advanced $140,000 more.
The clause …“to make repayment. As of March 31, 2026 and December 31, 2025, the total outstanding balance of the Sponsor Promissory Note and Second Sponsor Promissory Note is $ 2,164,867 and $ 2,124,867 , respectively. The Sponsor Promissory”…
The clause …“dissolution of the Company. In connection with the Company’s assessment of going concern considerations in accordance with FASB’s Accounting Standards Codification (“ASC”) Topic 205-40 Presentation of Financial Statements- Going”…
Read from stored SEC filing text by a regex — no model is involved — and each side links to the filing it came from. “Not previously extracted” is a statement about our record, not about the company: the clause may be present in wording we do not match.
- What changed vs 2025-03-28trust $157.3M → $25.6M -84%deadline 2025-07-30 → 2026-07-31sponsor loan $1.5M → $2.1M
trust account, combination deadline, sponsor loans outstanding +33 moved · 3 with no prior record of ours
- Trust account
- $157.3M$25.6M
- Combination deadline
- 2025-07-302026-07-31
- Sponsor loans outstanding
- $1.5M$2.1M
- Going-concern doubt
- stated · unchanged
- Mandate language
- we intend to target businesses larger than we could acquire …not matched in this filing
- Redeemable shares
- 2.28Mnot matched in this filing
SpacBrain reads this as $131,699,960 left the trust between the two filings.
The clause …“Public Warrants $ 5,085,000 $ — $ 5,085,000 $ — December 31, 2024 Assets Cash held in Trust Account: Interest-bearing demand deposit $ 25,630,285 $ 25,630,285 $ — $ — Liabilities Warrant liability – Founder Warrants $ 423,751 $ — $ — $”…
SpacBrain reads this as 366 days later than the previous record.
The clause …“the Second Sponsor Promissory Note was amended to extend the maturity date to July 31, 2026. The Company is currently in discussions with Nasdaq to have the Pubco Common Shares and the Pubco Warrants accepted for listing on Nasdaq,”…
SpacBrain reads this as the sponsor has advanced $670,000 more.
The clause …“of the Trust Account to make repayment. As of December 31, 2025, the total outstanding balance of the Sponsor Promissory Note and Second Sponsor Promissory Note is $2,124,867. Non-Redemption Agreements On each of January 17, 2024,”…
The clause …“to the deadline for completing the Initial Business Combination raise substantial doubt about our ability to continue as a “going concern.” As of December 31, 2025, the Company had $49,870 in cash held outside of the Trust”…
Read from stored SEC filing text by a regex — no model is involved — and each side links to the filing it came from. “Not previously extracted” is a statement about our record, not about the company: the clause may be present in wording we do not match.
- What changed vs 2025-08-13sponsor loan $1.9M → $2.0M
sponsor loans outstanding, trust account, combination deadline +31 moved · 5 with no prior record of ours
- Sponsor loans outstanding
- $1.9M$2.0M
- Trust account
- $25.6M · unchanged
- Combination deadline
- 2026-07-30 · unchanged
- Going-concern doubt
- stated · unchanged
- Mandate language
- we intend to target businesses larger than we could acquire … · unchanged
- Redeemable shares
- 152Knot matched in this filing
SpacBrain reads this as the sponsor has advanced $100,000 more.
The clause …“of the Trust Account to make repayment. As of September 30, 2025, the total outstanding balance of the Sponsor Promissory Note and Second Sponsor Promissory Note is $ 2,024,867 . The Sponsor Promissory Note and Second Sponsor”…
The clause …“Warrants $ 1,600,834 $ — $ 1,600,834 $ — December 31, 2024 Assets Investments held in Trust Account: Money Market investments $ 25,630,285 $ 25,630,285 $ — $ — Liabilities Warrant liability – Founder Warrants $ 423,751 $ — $ — $ 423,751”…
The clause …“July 30, 2026 to complete an Initial Business Combination. If an Initial Business Combination is not consummated by July 30, 2026, there will be a mandatory liquidation and subsequent dissolution of the Company unless our date to”…
The clause …“dissolution of the Company. In connection with the Company’s assessment of going concern considerations in accordance with FASB’s Accounting Standards Codification (“ASC”) Topic 205-40 Presentation of Financial Statements- Going”…
Read from stored SEC filing text by a regex — no model is involved — and each side links to the filing it came from. “Not previously extracted” is a statement about our record, not about the company: the clause may be present in wording we do not match.
- What changed vs 2025-05-15deadline 2025-07-30 → 2026-07-30sponsor loan $1.6M → $1.9M
combination deadline, sponsor loans outstanding, trust account +32 moved · 4 with no prior record of ours
- Combination deadline
- 2025-07-302026-07-30
- Sponsor loans outstanding
- $1.6M$1.9M
- Trust account
- $25.6M · unchanged
- Going-concern doubt
- stated · unchanged
- Mandate language
- we intend to target businesses larger than we could acquire … · unchanged
- Redeemable shares
- 152K · unchanged
SpacBrain reads this as 365 days later than the previous record.
The clause …“July 30, 2026 to complete an Initial Business Combination. If an Initial Business Combination is not consummated by July 30, 2026, there will be a mandatory liquidation and subsequent dissolution of the Company unless our date to”…
SpacBrain reads this as the sponsor has advanced $370,000 more.
The clause …“of the Trust Account to make repayment. As of June 30, 2025, the total outstanding balance of the Sponsor Promissory Note and Second Sponsor Promissory Note is $ 1,924,867 . The Sponsor Promissory Note and Second Sponsor”…
The clause …“Warrants $ 1,789,167 $ — $ 1,789,167 $ — December 31, 2024 Assets Investments held in Trust Account: Money Market investments $ 25,630,285 $ 25,630,285 $ — $ — Liabilities Warrant liability – Founder Warrants $ 423,751 $ — $ — $ 423,751”…
The clause …“dissolution of the Company. In connection with the Company’s assessment of going concern considerations in accordance with FASB’s Accounting Standards Codification (“ASC”) Topic 205-40 Presentation of Financial Statements- Going”…
The clause …“issued and outstanding at June 30, 2025 and December 31, 2024; excluding 151,833 and 2,284,199 shares subject to possible redemption as of June 30, 2025 and December 31, 2024, respectively 87 87 Class B ordinary shares, $ 0.0001”…
Read from stored SEC filing text by a regex — no model is involved — and each side links to the filing it came from. “Not previously extracted” is a statement about our record, not about the company: the clause may be present in wording we do not match.
What changed: Plum Acquisition Corp. III, a Cayman Islands SPAC, called an extraordinary general meeting for July 15, 2025 at 12:00 p.m. Eastern Time to extend its Termination Date for completing a business combination from July 30, 2025 to July 30, 2026. Public shareholders may redeem Class A ordinary shares for their pro rata share of the trust. At June 23, 2025 the redemption price was approximately $11.43 per share, based on approximately $1,734,842 in the trust account including interest not previously released to pay taxes. Why it matters: The trust holds roughly $1,734,842 in total, so prior redemptions have already taken nearly all of it — the vehicle now backs about 151,800 public shares at the $11.43 price. Without the extension past July 30, 2025 Plum would be forced to liquidate even if shareholders favored completing the deal, which is the board's stated reason for asking. The Class A ordinary shares last traded at $11.24 on June 18, 2025, below the $11.43 redemption value, so a holder who does not redeem gives up roughly nineteen cents a share against the market.
What changed vs 2024-12-31trust $25.6M → $5.9M -77%deadline 2025-07-30 → 2026-07-30trust account, combination deadline2 moved
- Trust account
- $25.6M$5.9M
- Combination deadline
- 2025-07-302026-07-30
SpacBrain reads this as $19,616,578 left the trust between the two filings.
The clause “Account. In the event of a liquidation, the Sponsor will not receive any monies held in the Trust Account as a result of its ownership of 5,933,508 Class B Ordinary Shares and 1,977,836 Founder Warrants (after giving effect to the”…
SpacBrain reads this as 365 days later than the previous record.
The clause …“redeem 100 per cent of the Public Shares if the Company does not consummate a Business Combination by July 30, 2026 or such earlier date as determined by the Board of Directors; or (b) with respect to any other provision relating to”…
Read from stored SEC filing text by a regex — no model is involved — and each side links to the filing it came from. “Not previously extracted” is a statement about our record, not about the company: the clause may be present in wording we do not match.
- What changed vs 2024-12-20trust $157.3M → $25.6M -84%deadline 2025-01-30 → 2025-07-30sponsor loan $1.1M → $1.6Mshares 2.28M → 152K -93%
trust account, combination deadline, sponsor loans outstanding +35 moved · 1 with no prior record of ours
- Trust account
- $157.3M$25.6M
- Combination deadline
- 2025-01-302025-07-30
- Sponsor loans outstanding
- $1.1M$1.6M
- Mandate language
- we intend to target businesses larger than we could acquire …we intend to target businesses larger than we could acquire …
- Redeemable shares
- 2.28M152K
- Going-concern doubt
- stated · unchanged
SpacBrain reads this as $131,699,960 left the trust between the two filings.
The clause …“Warrants $ 1,600,833 $ — $ 1,600,833 $ — December 31, 2024 Assets Investments held in Trust Account: Money Market investments $ 25,630,285 $ 25,630,285 $ — $ — Liabilities Warrant liability – Founder Warrants $ 423,751 $ — $ — $ 423,751”…
SpacBrain reads this as 181 days later than the previous record.
The clause …“July 30, 2025 to complete an Initial Business Combination. If an Initial Business Combination is not consummated by July 30, 2025, there will be a mandatory liquidation and subsequent dissolution of the Company unless our date to”…
SpacBrain reads this as the sponsor has advanced $425,000 more.
The clause …“of the Trust Account to make repayment. As of March 31, 2025, the total outstanding balance of the Sponsor Promissory Note and Second Sponsor Promissory Note is $ 1,554,867 . The Sponsor Promissory Note and Second Sponsor”…
SpacBrain reads this as 2,132,366 shares are no longer redeemable.
The clause …“issued and outstanding at March 31, 2025 and December 31, 2024; excluding 151,833 and 2,284,199 shares subject to possible redemption, respectively, March 31, 2025 and December 31, 2024, respectively 87 87 Class B ordinary shares, $”…
The clause …“dissolution of the Company. In connection with the Company’s assessment of going concern considerations in accordance with FASB’s Accounting Standards Codification (“ASC”) Topic 205-40 Presentation of Financial Statements- Going”…
Read from stored SEC filing text by a regex — no model is involved — and each side links to the filing it came from. “Not previously extracted” is a statement about our record, not about the company: the clause may be present in wording we do not match.
In plain English
Redemption deadlinethe last day to hand shares back for cash
Set by the filing that calls the meeting. Tender after it and the company is under no obligation to pay you the trust value.
Cash in trust / trust per sharethe cash the company is holding for each public share
Filed quarterly in the 10-Q's XBRL. It earns interest between filings, so the figure on a given day is slightly higher than the last filed one — where we show that we label it an estimate.
Accession numberthe SEC's unique id for one filing
Every figure on this page carries the accession of the filing that states it, so you can open the primary document rather than trust us.