Form 8-K

8-K — Plum Acquisition Corp. IV

Accession: 0001213900-26-105485

Filed: 2026-10-01

Period: 2026-10-01

CIK: 0002030482

SIC: 4911 (ELECTRIC SERVICES)

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

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UNITED

STATES

SECURITIES

AND EXCHANGE COMMISSION

Washington,

D.C. 20549

FORM

8-K

CURRENT

REPORT

Pursuant

to Section 13 or Section 15(d) of the Securities Exchange Act of 1934

Date

of Report (Date of earliest event reported): October 1, 2026

PLUM ACQUISITION CORP. IV

(Exact

name of registrant as specified in its charter)

Cayman Islands

001-42472

98-1795710

(State

or other jurisdiction of

incorporation or organization)

(Commission

File Number)

(I.R.S.

Employer

Identification Number)

2021 Fillmore St. #2089

San Francisco, California

94115

(Address

of principal executive offices)

(Zip

Code)

Registrant’s

telephone number, including area code: (929)

529-7125

Not

Applicable

(Former

name or former address, if changed since last report)

Check

the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation to the registrant under

any of the following provisions:

☒

Written communications pursuant to Rule 425 under the

Securities Act (17 CFR 230.425)

☐

Soliciting material pursuant to Rule 14a-12 under the

Exchange Act (17 CFR 240.14a-12)

☐

Pre-commencement communications pursuant to Rule 14d-2(b)

under the Exchange Act (17 CFR 240.14d-2(b))

☐

Pre-commencement communications pursuant to Rule 13e-4(c)

under the Exchange Act (17 CFR 240.13e-4(c))

Securities

registered pursuant to Section 12(b) of the Act:

Title

of each class

Trading

Symbol(s)

Name

of each exchange on which registered

Units,

each consisting of one Class A ordinary share, par value $0.0001 per share, and one-half of one redeemable warrant

PLMKU

Nasdaq

Global Market

Class

A ordinary shares, par value $0.0001 per share, included as part of the units

PLMK

Nasdaq

Global Market

Warrants

included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50

PLMKW

Nasdaq

Global Market

Indicate

by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2

of the Securities Exchange Act of 1934.

Emerging

growth company ☒

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying

with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item

7.01. Regulation FD Disclosure.

October 1, 2026, Plum Acquisition Corp. IV (“Plum IV”) and Controlled Thermal Resources Holdings Inc. (“CTR”)

issued a joint press release announcing that, in connection with the parties’ previously announced business combination, CTR had

entered into a series of agreements with certain strategic investors that are expected to materially strengthen CTR’s capital structure.

A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K (“Current Report”).

The

information in this Item 7.01, including Exhibit 99.1, is furnished and shall not be deemed “filed” for purposes of Section 18

of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities under that section,

and shall not be deemed to be incorporated by reference into the filings of Plum IV under the Securities Act of 1933, as amended, or

the Exchange Act, regardless of any general incorporation language in such filings.

Additional

Information and Where to Find It

connection with the transactions contemplated by the business combination agreement (“Proposed Transactions”), Plum IV and

CTR intend to file with the U.S. Securities and Exchange Commission (“SEC”) a registration statement on Form S-4 (as may

be amended, the “Registration Statement”), which will include a preliminary proxy statement of Plum IV as well as a preliminary

prospectus relating to the offer of securities to be issued to the stockholders of CTR (the “Proxy Statement/Prospectus”).

After the Registration Statement is declared effective, a definitive proxy statement and other relevant documents will be mailed to shareholders

of Plum IV as of the record date to be established for voting on the Proposed Transactions and other matters as described in the Proxy

Statement/Prospectus. Plum IV will also file other documents regarding the Proposed Transactions with the SEC. This Current Report does

not contain all of the information that should be considered concerning the Proposed Transactions and is not intended to form the basis

of any investment decision or any other decision in respect of the Proposed Transactions. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION,

SHAREHOLDERS OF PLUM IV AND OTHER INTERESTED PARTIES ARE URGED TO READ, WHEN AVAILABLE, THE PRELIMINARY PROXY STATEMENT/PROSPECTUS, AND

AMENDMENTS THERETO, AND THE DEFINITIVE PROXY STATEMENT/PROSPECTUS AND ALL OTHER RELEVANT DOCUMENTS FILED OR THAT WILL BE FILED WITH THE

SEC IN CONNECTION WITH PLUM IV’S SOLICITATION OF PROXIES FOR THE EXTRAORDINARY GENERAL MEETING OF ITS SHAREHOLDERS TO BE HELD TO

APPROVE THE PROPOSED TRANSACTIONS AND OTHER MATTERS AS DESCRIBED IN THE PROXY STATEMENT/PROSPECTUS BECAUSE THESE DOCUMENTS WILL CONTAIN

IMPORTANT INFORMATION ABOUT PLUM IV, CTR AND THE PROPOSED TRANSACTIONS. Investors and security holders will also be able to obtain copies

of the Registration Statement and the Proxy Statement/Prospectus and all other documents filed or to be filed with the SEC by Plum IV,

without charge, once available, on the SEC’s website at www.sec.gov or by directing a request to: Plum Acquisition Corp. IV, 2021

Fillmore St., #2089, San Francisco, California 94115, Attention: Kanishka Roy, or by email at plumir@icrinc.com.

Participants

in the Solicitation

Plum

IV, CTR and their respective directors and executive officers may be deemed participants under SEC rules in the solicitation of proxies

from Plum IV’s shareholders in connection with the Proposed Transactions. A list of the names of such directors and executive officers,

and information regarding their interests in the Proposed Transactions and their ownership of Plum IV’s securities is, or will

be, contained in Plum IV’s filings with the SEC. Additional information regarding the interests of the persons who may, under SEC

rules, be deemed participants in the solicitation of proxies from Plum IV’s shareholders in connection with the Proposed Transactions,

including the names and interests of CTR’s directors and executive officers, will be set forth in the Proxy Statement/Prospectus,

which is expected to be filed by Plum IV and CTR with the SEC. Investors and security holders may obtain free copies of these documents

as described above.

Offer or Solicitation

This

Current Report is for informational purposes only and is not a proxy statement or solicitation of a proxy, consent or authorization with

respect to any securities or in respect of the Proposed Transactions and shall not constitute an offer to sell or exchange, or a solicitation

of an offer to buy or exchange the securities of Plum IV or CTR, or any commodity or instrument or related derivative, nor shall there

be any sale of any such securities in any state or jurisdiction in which such offer, solicitation, sale or exchange would be unlawful

prior to registration or qualification under the securities laws of any such state or jurisdiction. This Current Report is not, and under

no circumstances is to be construed as, a prospectus, an advertisement or a public offering of the securities described herein in the

United States or any other jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements

of the Securities Act or an exemption therefrom. Investors should consult with their counsel as to the applicable requirements for a

purchaser to avail itself of any exemption under the Securities Act.

Forward-Looking

Statements

This

Current Report contains certain forward-looking statements within the meaning of the U.S. federal securities laws with respect to the

Proposed Transactions and the parties thereto. All statements contained in this Current Report other than statements of historical fact,

including, without limitation, statements regarding the Proposed Transactions between Plum IV and CTR and the planned PIPE in connection

with the Proposed Transactions; the anticipated benefits and timing of the Proposed Transactions; expected trading of the combined company’s

securities on the Nasdaq; the building of CTR’s flagship Hell’s Kitchen Project; the anticipated benefits and timing of CTR’s

flagship Hell’s Kitchen Project, the combined company’s future financial performance; the ability of the combined company

to execute its business strategy, its market opportunity and positioning; and other statements regarding management’s intentions,

beliefs, or expectations with respect to the combined company’s future performance, are forward-looking statements.

Forward-looking

statements are often identified by the use of words such as “anticipate,” “believe,” “continue,”

“could,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,”

“potential,” “predict,” “project,” “should,” “will,” “would,”

and similar expressions, but the absence of these words does not mean that a statement is not forward-looking.

These

forward-looking statements are based on the current expectations and assumptions of Plum IV and CTR and are subject to risks and uncertainties

that could cause actual results to differ materially from those expressed or implied by such forward-looking statements. Such risks and

uncertainties include, but are not limited to: (1) the occurrence of any event, change or other circumstances that could give rise to

the termination of the business combination agreement; (2) the outcome of any legal proceedings that may be instituted against the parties

following the announcement of the Proposed Transactions and any definitive agreements with respect thereto; (3) the inability to complete

the Proposed Transactions, including due to failure to obtain approval of the shareholders of Plum IV and CTR or other conditions to

closing and the inability to complete the planned PIPE; (4) the risk that the Proposed Transactions may not be completed by Plum IV’s

business combination deadline; (5) the inability to maintain the listing of Plum IV’s securities or to obtain or maintain the listing

of the combined company’s securities on the Nasdaq, the New York Stock Exchange, or another national securities exchange following

the Proposed Transactions; (6) the risk that the Proposed Transactions disrupts CTR’s current plans, business relationships, performance,

operations and business generally as a result of the announcement and consummation of the Proposed Transactions; (7) the risk that the

price of the combined company’s securities may be volatile due to a variety of factors, including changes in laws, regulations,

technologies, natural disasters, geopolitical tensions, and macro-economic and social environments affecting its business; (8) the ability

to recognize the anticipated benefits of the Proposed Transactions, which may be affected by, among other things, competition, the ability

of the combined company to grow and manage growth profitably and retain its key employees; (9) costs related to the Proposed Transactions;

(10) changes in applicable laws or regulations; (11) risks related to CTR’s business, including fluctuations in demand and prices

for lithium and other critical minerals, competition within the industry, the risks inherent in development projects and exploration

activities, potential delays or cost overruns in capital expenditures, the ability to secure necessary raw materials, compliance with

regulatory requirements, environmental and safety obligations, economic and market conditions, and political or geopolitical developments;

and (12) other risks detailed from time to time in Plum IV’s filings with the SEC, including the Registration Statement and related

documents filed or to be filed in connection with the Proposed Transactions.

The

foregoing list of risk factors is not exhaustive. You should carefully consider the foregoing factors and the other risks and uncertainties

described in the “Risk Factors” section of Plum IV’s Annual Report on Form 10-K filed with the SEC on March 31, 2026,

subsequent Quarterly Reports on Form 10-Q and the Registration Statement and Proxy Statement/Prospectus that will be filed by Plum IV

and CTR, and other documents filed by Plum IV from time to time with the SEC, as well as the list of risk factors included herein. These

filings identify and address other important risks and uncertainties that could cause actual results to differ materially from those

contained in the forward-looking statements. Additional risks and uncertainties not currently known or that are currently deemed immaterial

may also cause actual results to differ materially from those expressed or implied by such forward-looking statements. Readers are cautioned

not to put undue reliance on forward-looking statements, and none of the parties or any of their representatives assumes any obligation

and do not intend to update or revise these forward-looking statements, each of which is made only as of the date of this Current Report.

Item

9.01. Financial Statements and Exhibits.

(d)

Exhibits.

Exhibit

No.

Description

99.1

Press Release, dated October 1, 2026.

104

Cover Page Interactive

Data File (embedded within the Inline XBRL document)

SIGNATURE

Pursuant

to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by

the undersigned hereunto duly authorized.

Date: October 1, 2026

PLUM ACQUISITION CORP. IV

By:

/s/ Kanishka

Roy

Name:

Kanishka Roy

Title:

Chief Executive Officer

EX-99.1 — PRESS RELEASE, DATED OCTOBER 1, 2026

EX-99.1

Filename: ea030732501ex99-1.htm · Sequence: 2

Exhibit 99.1

Controlled Thermal Resources and Plum Acquisition

Corp. IV Announce Strengthened Capital Structure to Advance Hell’s Kitchen Geothermal Power and Critical Minerals Project

● Approximately $205 Million of Existing Convertible Debt Expected to Convert to Equity at Close of the

Proposed Business Combination, with an Additional Approximately $40 Million Expected to Convert into a New Planned PIPE

● Simplified Capital Structure Expected to Support Financing of CTR’s Power-First Development Strategy

Ahead of Proposed Nasdaq Listing

● CTR plans to develop approximately 650 MW of renewable baseload geothermal generation for potential of

co-location of AI data centers

IMPERIAL, Calif. and SAN FRANCISCO, Oct. 01,

2026 (GLOBE NEWSWIRE) -- Controlled Thermal Resources Holdings Inc. (“CTR” or the “Company”), developer of one

of America’s largest and most advanced geothermal power and critical minerals projects, and Plum Acquisition Corp. IV (Nasdaq: PLMK)

(“Plum IV”), a publicly traded special purpose acquisition company, today announced a series of agreements between CTR and certain

strategic investors that are expected to materially strengthen CTR’s capital structure in connection with their previously announced

proposed business combination.

The agreements follow CTR and Plum IV’s

previously announced proposed business combination. Upon closing of the proposed business combination and related transactions (“Proposed

Transactions”), the combined company is expected to operate as Controlled Thermal Resources and is expected to be listed on the

Nasdaq Stock Market LLC (“Nasdaq”) under the ticker symbol “CTRH”. The Proposed Transactions are expected to close

in the fourth quarter of 2026, subject to shareholder approval, regulatory approvals, and other customary closing conditions.

A Simplified Capital Structure Ahead of Proposed

Listing

CTR expects to retire the majority of its outstanding

convertible debt obligations through a combination of conversion to equity and participation in the PIPE financing upon the closing of

the Proposed Transactions. The Company’s outstanding convertible notes, expected to total approximately $245 million at closing, are currently

held by strategic investors. Based on the recently signed agreements, at closing approximately $205 million is expected to convert to

equity and approximately $40 million is expected to convert into the new planned PIPE structure.

Upon completion of the Proposed Transactions,

CTR expects to emerge with a simplified capital structure, enhanced balance sheet strength and improved credit profile. The Company believes

the restructuring will provide greater flexibility to raise additional equity, attract new strategic capital and advance project financing

for Stage 1 of the Hell’s Kitchen development.

Executive Commentary

“This is an important step in our plan to

deliver on the resource of the Salton Sea, including power production and critical minerals in one place,” said Rod Colwell, Chief

Executive Officer of CTR. “Converting this debt to equity ahead of listing strengthens our capital structure and provides greater

flexibility to complete project financing for Stage 1, building on the significant capital already invested, full-scale production wells

in place, advanced permitting and key long-lead equipment already staged for construction.”

“CTR has reached an important point in

its development, with a proven resource, advanced permitting, equipment already staged and a defined capital plan for Stage

1,” said Kanishka Roy, Chief Executive Officer of Plum IV. “ The steps announced today simplify CTR’s balance

sheet ahead of the proposed listing, providing enhanced financial flexibility as the Company advances one of the country’s

most significant geothermal power and critical minerals developments.”

Advancing a Power-First Development Strategy

CTR is developing an integrated power and critical

minerals business from a single resource, sequenced to build first Stage 1 Power. Stage 1 Power is a planned 50 MW geothermal facility

designed to generate and sell clean, 24/7 baseload power with potential of co-location of AI data centers, and to establish the wells,

brine flow and shared infrastructure on which Stage 1 Lithium will operate. CTR expects Stage 1 Power to achieve commercial operation

in 2028, followed by Stage 1 Lithium, with planned annual battery grade capacity of 25,000 metric tons, targeted for commercial operation

in 2030.

CTR has made substantial progress preparing Hell’s

Kitchen, with approximately $310 million invested in development to date, advanced permitting in place, and key long-lead equipment built

and staged for construction. The project is located on a proven Salton Sea geothermal resource that has supported power generation for

more than 40 years, with Hell’s Kitchen representing the northern extension of that resource area.

In total, CTR plans to develop approximately 650

MW of renewable baseload geothermal generation. The approximately 4,000-acre site is also positioned to support power sales to the grid

and potential co-location of AI data centers and advanced manufacturing customers. The same resource supports recovery of battery-grade

lithium and other critical minerals, which CTR expects to provide additional long-term value creation opportunities.

An updated investor presentation is available

in the Investors section of the Controlled Thermal Resources website.

About CTR

CTR is advancing geothermal baseload energy, battery-grade

lithium chemicals, and critical minerals production at its Hell’s Kitchen project in southern California. CTR’s leadership

team has successfully developed and managed geothermal power plant operations in California’s Salton Sea region for 30+ years. CTR’s

mission is to strengthen U.S. energy security and supply chain resilience by providing strategic resources essential to technology, manufacturing,

and defense. For more information, visit www.cthermal.com.

About Plum Acquisition Corp. IV

Plum Acquisition Corp. IV (Nasdaq: PLMK) is a

publicly traded special purpose acquisition company led by an experienced team with a track record of sourcing and executing complex public-market

transactions. Plum IV aims to identify companies positioned to deliver long-term value through technological advancements, disruptive

business models, and secular long-term trends. For more information, visit https://plumpartners.com.

Additional Information and Where to Find It

In connection with the transactions

contemplated by the Business Combination Agreement (“Proposed Transactions”), Plum IV and CTR intend to file with the

SEC a registration statement on Form S-4 (as may be amended, the “Registration Statement”), which will include a

preliminary proxy statement of Plum IV as well as a preliminary prospectus relating to the offer of securities to be issued to the

stockholders of CTR (the “Proxy Statement/Prospectus”). After the Registration Statement is declared effective, a

definitive proxy statement and other relevant documents will be mailed to shareholders of Plum IV as of the record date to be

established for voting on the Proposed Transactions and other matters as described in the Proxy Statement/Prospectus. Plum IV will

also file other documents regarding the Proposed Transactions with the SEC. This press release does not contain all of the

information that should be considered concerning the Proposed Transactions and is not intended to form the basis of any investment

decision or any other decision in respect of the Proposed Transactions. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION,

SHAREHOLDERS OF PLUM IV AND OTHER INTERESTED PARTIES ARE URGED TO READ, WHEN AVAILABLE, THE PRELIMINARY PROXY STATEMENT/PROSPECTUS,

AND AMENDMENTS THERETO, AND THE DEFINITIVE PROXY STATEMENT/PROSPECTUS AND ALL OTHER RELEVANT DOCUMENTS FILED OR THAT WILL BE FILED

WITH THE SEC IN CONNECTION WITH PLUM IV’S SOLICITATION OF PROXIES FOR THE EXTRAORDINARY GENERAL MEETING OF ITS SHAREHOLDERS TO

BE HELD TO APPROVE THE PROPOSED TRANSACTIONS AND OTHER MATTERS AS DESCRIBED IN THE PROXY STATEMENT/PROSPECTUS BECAUSE THESE

DOCUMENTS WILL CONTAIN IMPORTANT INFORMATION ABOUT PLUM IV, CTR AND THE PROPOSED TRANSACTIONS. Investors and security holders will

also be able to obtain copies of the Registration Statement and the Proxy Statement/Prospectus and all other documents filed or to

be filed with the SEC by Plum IV, without charge, once available, on the SEC’s website at www.sec.gov or by directing a

request to: Plum Acquisition Corp. IV, 2021 Fillmore St., #2089, San Francisco, California 94115, Attention: Kanishka Roy, or by

email at plumir@icrinc.com.

Participants in the Solicitation

Plum IV, CTR and their respective directors and

executive officers may be deemed participants under SEC rules in the solicitation of proxies from Plum IV’s shareholders in connection

with the Proposed Transactions. A list of the names of such directors and executive officers, and information regarding their interests

in the Proposed Transactions and their ownership of Plum IV’s securities is, or will be, contained in Plum IV’s filings with

the SEC. Additional information regarding the interests of the persons who may, under SEC rules, be deemed participants in the solicitation

of proxies from Plum IV’s shareholders in connection with the Proposed Transactions, including the names and interests of CTR’s

directors and executive officers, will be set forth in the Proxy Statement/Prospectus, which is expected to be filed by Plum IV and CTR

with the SEC. Investors and security holders may obtain free copies of these documents as described above.

No Offer or Solicitation

This press release is for informational purposes

only and is not a proxy statement or solicitation of a proxy, consent or authorization with respect to any securities or in respect of

the Proposed Transactions and shall not constitute an offer to sell or exchange, or a solicitation of an offer to buy or exchange the

securities of Plum IV or CTR, or any commodity or instrument or related derivative, nor shall there be any sale of any such securities

in any state or jurisdiction in which such offer, solicitation, sale or exchange would be unlawful prior to registration or qualification

under the securities laws of any such state or jurisdiction. This press release is not, and under no circumstances is to be construed

as, a prospectus, an advertisement or a public offering of the securities described herein in the United States or any other jurisdiction.

No offer of securities shall be made except by means of a prospectus meeting the requirements of the Securities Act or an exemption therefrom.

Investors should consult with their counsel as to the applicable requirements for a purchaser to avail itself of any exemption under the

Securities Act.

Forward-Looking Statements

This press release contains certain forward-looking

statements within the meaning of the U.S. federal securities laws with respect to the Proposed Transactions and the parties thereto. All

statements contained in this press release other than statements of historical fact, including, without limitation, statements regarding

the Proposed Transactions between Plum IV and CTR and the planned PIPE in connection with the Proposed Transactions; the anticipated benefits

and timing of the Proposed Transactions; expected trading of the combined company’s securities on the Nasdaq; the building of CTR’s

flagship Hell’s Kitchen Project; the anticipated benefits and timing of CTR’s flagship Hell’s Kitchen Project, the combined

company’s future financial performance; the ability of the combined company to execute its business strategy, its market opportunity

and positioning; and other statements regarding management’s intentions, beliefs, or expectations with respect to the combined company’s

future performance, are forward-looking statements.

Forward-looking statements are often identified

by the use of words such as “anticipate,” “believe,” “continue,” “could,” “estimate,”

“expect,” “intend,” “may,” “might,” “plan,” “potential,” “predict,”

“project,” “should,” “will,” “would,” and similar expressions, but the absence of these

words does not mean that a statement is not forward-looking.

These forward-looking statements are based on

the current expectations and assumptions of Plum IV and CTR and are subject to risks and uncertainties that could cause actual results

to differ materially from those expressed or implied by such forward-looking statements. Such risks and uncertainties include, but are

not limited to: (1) the occurrence of any event, change or other circumstances that could give rise to the termination of the Business

Combination Agreement; (2) the outcome of any legal proceedings that may be instituted against the parties following the announcement

of the Proposed Transactions and any definitive agreements with respect thereto; (3) the inability to complete the Proposed Transactions,

including due to failure to obtain approval of the shareholders of Plum IV and CTR or other conditions to closing and the inability to

complete the planned PIPE; (4) the risk that the Proposed Transactions may not be completed by Plum IV’s business combination deadline;

(5) the inability to maintain the listing of Plum IV’s securities or to obtain or maintain the listing of the combined company’s

securities on the Nasdaq, the New York Stock Exchange, or another national securities exchange following the Proposed Transactions; (6)

the risk that the Proposed Transactions disrupts CTR’s current plans, business relationships, performance, operations and business

generally as a result of the announcement and consummation of the Proposed Transactions; (7) the risk that the price of the combined company’s

securities may be volatile due to a variety of factors, including changes in laws, regulations, technologies, natural disasters, geopolitical

tensions, and macro-economic and social environments affecting its business; (8) the ability to recognize the anticipated benefits of

the Proposed Transactions, which may be affected by, among other things, competition, the ability of the combined company to grow and

manage growth profitably and retain its key employees; (9) costs related to the Proposed Transactions; (10) changes in applicable laws

or regulations; (11) risks related to CTR’s business, including fluctuations in demand and prices for lithium and other critical

minerals, competition within the industry, the risks inherent in development projects and exploration activities, potential delays or

cost overruns in capital expenditures, the ability to secure necessary raw materials, compliance with regulatory requirements, environmental

and safety obligations, economic and market conditions, and political or geopolitical developments; and (12) other risks detailed from

time to time in Plum IV’s filings with the SEC, including the Registration Statement and related documents filed or to be filed

in connection with the Proposed Transactions.

The foregoing list of risk factors is not exhaustive.

You should carefully consider the foregoing factors and the other risks and uncertainties described in the “Risk Factors”

section of Plum IV’s Annual Report on Form 10-K filed with the SEC on March 31, 2026, subsequent Quarterly Reports on Form 10-Q

and the Registration Statement and Proxy Statement/Prospectus that will be filed by Plum IV and CTR, and other documents filed by Plum

IV from time to time with the SEC, as well as the list of risk factors included herein. These filings identify and address other important

risks and uncertainties that could cause actual results to differ materially from those contained in the forward-looking statements. Additional

risks and uncertainties not currently known or that are currently deemed immaterial may also cause actual results to differ materially

from those expressed or implied by such forward-looking statements. Readers are cautioned not to put undue reliance on forward-looking

statements, and none of the parties or any of their representatives assumes any obligation and do not intend to update or revise these

forward-looking statements, each of which is made only as of the date of this press release.

Contacts

ICR for Investors and Media: ICRCTR@icrinc.com

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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No definition available.

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- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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No definition available.

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- Definition

Address Line 1 such as Attn, Building Name, Street Name

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- Definition

Name of the City or Town

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- Definition

Code for the postal or zip code

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- Definition

Name of the state or province.

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- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

Indicate if registrant meets the emerging growth company criteria.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 7A

-Section B

-Subsection 2

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- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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No definition available.

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- Definition

Two-character EDGAR code representing the state or country of incorporation.

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No definition available.

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Data Type:

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- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

Local phone number for entity.

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No definition available.

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

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- Definition

Title of a 12(b) registered security.

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-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

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- Definition

Name of the Exchange on which a security is registered.

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-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

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- Definition

Trading symbol of an instrument as listed on an exchange.

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

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