Barnwell adds M&A advisor Sean Wallace

Barnwell Industries, Inc. appointed Sean Wallace as a strategic advisor to strengthen its mergers and acquisitions and broader corporate development efforts.

Rhea-AI Filing Summary

Barnwell Industries, Inc. appointed Sean Wallace as a strategic advisor to strengthen its mergers and acquisitions and broader corporate development efforts. Wallace has more than 30 years of senior financial and corporate leadership experience across public and private companies.

He previously served as Chief Financial Officer at AST SpaceMobile, Inc. and as Chief Financial Officer, Treasurer, and Vice President at Cogent Communications, and has held senior roles at Standard Chartered Bank and JPMorgan in the Asia Pacific region. In his advisory role, he will work with Barnwell’s leadership to evaluate and execute potential mergers, acquisitions, divestitures, and other initiatives that align with the company’s long-term objectives, particularly in areas such as space, telecommunications, emerging defense, rare earths, reshoring, and energy.

Insights

Corporate governance and strategy analyst

Barnwell adds seasoned strategic finance advisor to support M&A plans.

Barnwell Industries appointed Sean Wallace as a strategic advisor focused on mergers, acquisitions, and corporate development. His background spans senior finance roles at AST SpaceMobile, Cogent Communications, Standard Chartered Bank, and JPMorgan in the Asia Pacific region.

This move signals an emphasis on external growth and portfolio building rather than an immediate transaction. The company highlights potential opportunities in sectors including space, telecommunications, emerging defense, rare earths, reshoring, and energy. Actual outcomes will depend on which specific deals, if any, are ultimately negotiated and executed.

8-K Event Classification

2 items: 8.01, 9.01

2 items

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Barnwell Industries (BRN) announce in this 8-K filing?

Barnwell Industries announced the appointment of Sean Wallace as a strategic advisor focused on mergers, acquisitions, and broader corporate development initiatives. He will work with leadership to identify and evaluate strategic opportunities that align with Barnwell’s long-term objectives across several targeted growth sectors.

Who is Sean Wallace and what experience does he bring to Barnwell (BRN)?

Sean Wallace is a senior finance executive with more than 30 years of experience in capital markets, strategic finance, and M&A. He has served as CFO at AST SpaceMobile, CFO and Treasurer at Cogent Communications, and held senior roles at Standard Chartered Bank and JPMorgan.

What will Sean Wallace do in his strategic advisor role at Barnwell Industries (BRN)?

As a strategic advisor, Sean Wallace will help Barnwell assess and execute strategic opportunities, including potential mergers, acquisitions, divestitures, and other corporate development initiatives. His work is intended to support disciplined growth in line with the company’s long-term strategic and capital allocation goals.

Which sectors is Barnwell Industries (BRN) targeting for future strategic opportunities?

Barnwell highlights potential opportunities in space, telecommunications, emerging defense, rare earths, reshoring, and energy. The company views its structure and shareholder base as positioning it to identify and attract growth companies in these areas, although specific transactions are not detailed in this disclosure.

Did Sean Wallace have a prior relationship with Barnwell Industries (BRN)?

Yes. The company notes that Sean Wallace participated in Barnwell’s November 2025 private placement. This existing relationship precedes his appointment as a strategic advisor and suggests familiarity with Barnwell’s capital structure and shareholder base before assuming his advisory responsibilities.

Does this Barnwell (BRN) announcement include any completed mergers or acquisitions?

No completed transactions are described. The announcement focuses on appointing Sean Wallace to advise on mergers, acquisitions, divestitures, and other corporate development initiatives. It outlines strategic intentions rather than reporting a specific deal or immediate change to Barnwell’s asset base or operations.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/16/2026 - 04:23 PM Learn about SEC filing dates

false0000010048NYSEAMER00000100482026-03-112026-03-11

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

Current Report Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): March 11, 2026

BARNWELL INDUSTRIES, INC.

(Exact Name of Registrant as Specified in its Charter)

Delaware	1-5103	72-0496921
(State or other jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

24 Greenway Plaza, Suite 1800Q

Houston, Texas 77046

(Address of Principal Executive Offices) (Zip Code)

(713) 730-7026

(Registrant’s Telephone Number, Including Area Code)

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 of 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
Common Stock, $0.50 Par Value	BRN	NYSEAMER

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If 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 8.01 Other Events

On March 11, 2026, Barnwell Industries, Inc. (the “Company”) issued a press release announcing the appointment of Sean Wallace as a strategic advisor to the Company. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits

Exhibit No.	Description
99.1	Press release dated March 11, 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.

Dated: March 16, 2026
BARNWELL INDUSTRIES, INC.
By:	/s/ Philip F. Patman, Jr.
	Name:	Philip F. Patman, Jr.
	Title:	Chief Financial Officer and Treasurer

Exhibit 99.1

On Wednesday 03 11, 2026 at 7:00AM ET

Barnwell Industries, Inc. Announces Appointment of Sean Wallace to Expand Strategic M&A Capabilities and Capital Markets Expertise

HOUSTON, TX / ACCESS Newswire / March 11, 2026 / Barnwell Industries, Inc. (NYSE American:BRN) ("Barnwell" or the "Company") today announced the appointment of Sean Wallace as a strategic advisor to enhance the Company's capabilities in mergers and acquisitions and broader corporate development initiatives. Mr. Wallace participated in Barnwell's November 2025 Private Placement.

Mr. Wallace brings more than 30 years of senior financial and corporate leadership experience, including extensive work in capital markets, strategic finance, and M&A. He has served in a series of high-impact executive roles across public and private companies, most recently as Chief Financial Officer and Executive Vice President at AST SpaceMobile, Inc. Prior to that, Mr. Wallace served as Chief Financial Officer, Treasurer, and Vice President at Cogent Communications, a global Tier 1 internet service provider. As CFO, he led capital raising, strategic evaluation, and financial planning efforts. Earlier in his career, he held senior roles at Standard Chartered Bank and co-headed Investment Banking at JPMorgan in the Asia Pacific region. Mr. Wallace is a graduate of Harvard College and Harvard Business School.

"We are thrilled to welcome Sean to Barnwell," said Philip Patman, Jr., Chief Financial Officer and Director of Barnwell Industries. "His proven track record in strategic finance and M&A brings an invaluable perspective as we pursue disciplined growth and value creation."

In his advisory role, Mr. Wallace will work with Barnwell's leadership team to assess and execute strategic opportunities, including potential mergers, acquisitions, divestitures, and other corporate development initiatives that align with the Company's long-term objectives.

"I am excited to be a part of the Barnwell opportunity. Barnwell's unique structure and shareholder base positions the company to identify and attract exciting growth companies, including those in Space, Telecommunications, Emerging Defense, Rare Earths, Reshoring and Energy. I look forward to working with the team to advance the portfolio of Barnwell," Wallace stated.

About Barnwell Industries, Inc.

Barnwell Industries, Inc. (NYSE American:BRN) is a diversified company with operations and interests in energy and related assets. The Company is focused on disciplined capital allocation, operational excellence, and high-return growth opportunities.

Forward-Looking Statements

The information contained in this press release contains "forward-looking statements," within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. A forward-looking statement is one which is based on current expectations of future events or conditions and does not relate to historical or current facts. These statements include various estimates, forecasts, projections of Barnwell's future performance, statements of Barnwell's plans and objectives, and other similar statements. Forward-looking statements include phrases such as "expects," "anticipates," "intends," "plans," "believes," "predicts," "estimates," "assumes," "projects," "may," "will," "will be," "should," or similar expressions. Although Barnwell believes that its current expectations are based on reasonable assumptions, it cannot assure that the expectations contained in such forward-looking statements will be achieved. Forward-looking statements involve risks, uncertainties and assumptions which could cause actual results to differ materially from those contained in such statements. The risks, uncertainties and other factors that might cause actual results to differ materially from Barnwell's expectations are set forth in the "Forward-Looking Statements," "Risk Factors" and other sections of Barnwell's annual report on Form 10-K for the last fiscal year and Barnwell's other filings with the Securities and Exchange Commission. Investors should not place undue reliance on the forward-looking statements contained in this press release, as they speak only as of the date of this press release, and Barnwell expressly disclaims any obligation or undertaking to publicly release any updates or revisions to any forward-looking statements contained herein.

COMPANY:

Philip F. Patman, Jr.

Chief Financial Officer and Treasurer

Barnwell Industries, Inc.

24 Greenway Plaza, Suite 1800Q

Houston, Texas 77046

Telephone: +1 (713) 730 7026

Website: www.brninc.com

CONTACT: Barnwell Industries, Inc.

Filing Exhibits & Attachments

4 documents

Press Releases

• EX-99.1 EXHIBIT 99.1 8.8 KB

Other Documents

• EX-101 XBRL TAXONOMY EXTENSION SCHEMA 3.8 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE 21.5 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE 15.7 KB