THIS ANNOUNCEMENT IS FOR INFORMATIONAL PURPOSES ONLY AND DOES NOT CONSTITUTE AN OFFER FOR SALE OF ANY SECURITIES OR AN OFFER OR INVITATION TO PURCHASE ANY SECURITIES IN ANY JURISDICTION OR A SOLICITATION OF ANY VOTE OR APPROVAL.

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN, INTO OR FROM ANY JURISDICTION IN WHICH SUCH RELEASE, PUBLICATION OR DISTRIBUTION WOULD BE UNLAWFUL.

28 May 2026

ROSEBANK INDUSTRIES PLC

("ROSEBANK" OR THE "COMPANY")

COMPLETION OF ASP MWI HOLDINGS, INC. ("MW COMPONENTS") ACQUISITION AND UPDATE ON IMPROVEMENT PLANS FOR MW COMPONENTS AND CPM

Further to the announcement on 3 March 2026, Rosebank is pleased to announce it has successfully completed the acquisition of MW Components. All conditions have been satisfied, or, if applicable, waived. This means that Rosebank has now fully completed the acquisitions of CPM and MW Components.

·    As announced on 3 March 2026, MW Components has been acquired for an enterprise value of approximately $950 million, implying an acquisition multiple of approximately 10x 2025 EBITDA[1]

·    At completion, MW Components' leverage was materially reduced, freeing up significant cashflow and enabling further investment

·    Integration and improvement plans across both MW Components and CPM are now being put into effect. Key initiatives include:

o  an initial restructuring of head office and divisional costs for both MW Components and CPM, which will result in those costs reducing by over $25 million within the next 12 months

o  the closure of MW Components' Charlotte head office, announced today

o  the planned separation of MW Components into three standalone businesses - Fasteners, Springs, and Precision Components

o  the simplification of CPM's organisation, including moving all aftermarket activities under a unified leadership structure and the elimination of the Process Solutions division

o  approval of a planned $14 million capital expenditure for investment into the MW Components Fasteners Addison facility

o  plans for the replacement of the CPM CEO, which are at an advanced stage

MW Components is a manufacturer of highly engineered, bespoke fasteners, springs and precision metal components, wholly based in the United States. MW Components operates in technically demanding niches where precision manufacturing and application expertise create high barriers to entry and benefits from long-standing customer relationships across a blue-chip customer base.

Simon Peckham, Chief Executive of Rosebank Industries plc, today said:

"We are pleased to have completed the acquisition of MW Components. We are now focused on delivering improvements across MW Components and CPM and are confident that successful execution of our strategy will create substantial value for shareholders over the coming years."

ENDS

Enquiries:

Rosebank Industries plc               Via Montfort Communications

Simon Peckham                                                Chief Executive

Liam Butterworth                            Chief Operating Officer

Matthew Richards                           Group Finance Director

Montfort Communications

Nick Miles                                           +44 (0) 7739 701 634, [email protected]

Charlotte McMullen                       +44 (0) 7921 881 800, [email protected]

Investor Relations

Chris Dyett                                          +44 (0) 7974 974 690, [email protected]

Capitalised terms used but not otherwise defined in this announcement have the meanings given to them in the Company's announcement dated 3 March 2026, unless the context provides otherwise.

Important information

This announcement includes statements that are, or may be deemed to be, 'forward-looking statements'. These forward-looking statements can be identified by the use of forward-looking terminology, including the terms 'believes', 'estimates', 'plans', 'projects', 'anticipates', 'expects', 'intends', 'may', 'will', or 'should', or, in each case, their negative or other variations or comparable terminology. All forward-looking statements address matters that involve risks and uncertainties. Accordingly, there are or will be important factors that could cause the Group's actual results to differ materially from those indicated in these statements. Any forward-looking statements in this announcement reflect the Company's current views, intentions, beliefs or expectations with respect to future events and are subject to these and other risks, uncertainties and assumptions relating to the Group's operations, results of operations, growth strategy and liquidity. These forward-looking statements speak only as at the date of this announcement. Subject to any applicable obligations, the Company undertakes no obligation to update publicly or review any forward-looking statement, whether as a result of new information, future developments or otherwise.