[6-K] Vertical Aerospace Ltd. Current Report (Foreign Issuer)

Rhea-AI Filing Summary

Vertical Aerospace (EVTL) has entered a long-term partnership with Spanish Tier-1 aerostructures supplier Aciturri Aerostructures, effective 1 Aug 2025. Aciturri will manufacture the entire airframe—wing, empennage, pylons and fuselage—for both pre-production and, pending certification, commercial versions of the company’s VX4 electric/hybrid-electric eVTOL. The supplier will also assume engineering responsibility for several structural components and provide concurrent manufacturing-engineering support.

The agreement deepens the companies’ existing relationship and is aimed at accelerating industrialisation and regulatory certification of the VX4 ahead of planned service entry. A related press release (Ex. 99.1) was furnished on 4 Aug 2025. The filing contains customary forward-looking-statement language and incorporates the disclosed information (excluding the exhibit) into EVTL’s outstanding F-3 registration statements.

Positive

• Partnership secures a Tier-1 aerostructures supplier, reducing manufacturing and industrialisation risk.
• Aciturri assumes full airframe and engineering responsibility, potentially accelerating certification timelines.
• Alignment with an established aerospace player could enhance investor confidence in VX4 commercial viability.

Negative

• No financial terms or production volumes were disclosed, limiting visibility on cost structure and margins.
• VX4 remains subject to regulatory certification; timelines and approval remain key execution risks.

Insights

Aerospace Industry Specialist

TL;DR: Experienced Tier-1 supplier takes full VX4 airframe scope—key industrial de-risking step for EVTL.

Aciturri’s proven track record with Airbus and Boeing programmes adds manufacturing credibility to the VX4. Transferring complete airframe build and structural engineering centralises accountability, shortens iteration loops and should streamline certification testing. Absence of disclosed volumes or financial terms tempers visibility, but operationally the partnership reduces scale-up risk and leverages Aciturri’s global supply chain.

Equity Research Analyst

TL;DR: Strategically positive; financial impact unknown until cost, volume and margin details surface.

The deal signals tangible progress toward commercial readiness, addressing investor concerns about Vertical’s manufacturing capabilities. However, with no capex, cost-sharing or production-rate parameters disclosed, the earnings impact cannot yet be modelled. Certification remains the critical gating factor, maintaining execution risk. Overall sentiment: constructive but not valuation-changing until more data emerge.

UNITED STATES 

SECURITIES AND EXCHANGE COMMISSION 

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER 

PURSUANT TO SECTION 13A-16 OR 15D-16 

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August 2025

Commission File Number: 001-41169

Vertical Aerospace Ltd. 

(Exact Name of Registrant as Specified in Its Charter)

Unit 1 Camwal Court, Chapel Street 

Bristol BS2 0UW 

United Kingdom 

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  x            Form 40-F  ¨

INFORMATION CONTAINED IN THIS REPORT ON FORM 6-K

Long-Term Airframe Partnership with Aciturri Aerostructures

Vertical Aerospace Ltd. (the “Company”), through its wholly owned subsidiary, Vertical Aerospace Group Limited, and Aciturri Aerostructures (“Aciturri”), a leading global aerostructures supplier, entered into a partnership agreement, effective as of August 1, 2025, pursuant to which Aciturri will build the airframe for the Company’s electric and hybrid-electric vertical take-off and landing (“eVTOL”) aircraft, the VX4.

Under the partnership agreement, Aciturri will supply the entire airframe, including the wing, empennage, pylons and fuselage, of both the pre-production and, subject to certification, certified VX4 that will enter into service. In addition, Aciturri will also have engineering responsibility for several structural components and will provide concurrent manufacturing engineering for the airframe programme.

Press Release

On August 4, 2025, the Company issued a press release in relation to the expansion of the Company’s partnership with Aciturri, a copy of which is furnished as Exhibit 99.1 hereto.

Forward-Looking Statements

This Report of Foreign Private Issuer on Form 6-K (the “Form 6-K”) contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Any express or implied statements contained in this Form 6-K that are not statements of historical fact may be deemed to be forward-looking statements, including, without limitation, statements regarding Aciturri’s obligations under the partnership agreement, the efficiencies, reliability and expertise expected, the design and manufacture of the VX4, certification and the commercialization of the VX4 and our ability to achieve regulatory certification of our aircraft product on any particular timeline or at all, the features and capabilities of the VX4, business strategy and plans and objectives of management for future operations, including the building and testing of our prototype aircrafts on timelines projected, completion of the piloted test programme phases, selection of suppliers, as well as statements that include the words “expect,” “intend,” “plan,” “believe,” “project,” “forecast,” “estimate,” “may,” “should,” “anticipate,” “will,” “aim,” “potential,” “continue,” “is/are likely to” and similar statements of a future or forward-looking nature. These forward-looking statements reflect our current views with respect to future events and are not a guarantee of future performance. Actual outcomes may differ materially from the information contained in the forward-looking statements as a result of a number of factors, including, without limitation, the important factors discussed under the caption “Risk Factors” in the Company's Annual Report on Form 20-F filed with the U.S. Securities and Exchange Commission (“SEC”) on March 11, 2025, as such factors may be updated from time to time in the Company’s other filings with the SEC. Any forward-looking statements contained in this Form 6-K speak only as of the date hereof and accordingly undue reliance should not be placed on such statements. The Company disclaims any obligation or undertaking to update or revise any forward-looking statements contained in this Form 6-K, whether as a result of new information, future events or otherwise, other than to the extent required by applicable law.

INCORPORATION BY REFERENCE

The information included in this Report on Form 6-K (excluding Exhibits 99.1) is hereby incorporated by reference into the Company’s Registration Statement on Form F-3 (File No. 333-270756, File No. 333-284763 and File No. 333-287207) (including any prospectuses forming a part of such registration statements) and to be a part thereof from the date on which this Report on Form 6-K is filed, to the extent not superseded by documents or reports subsequently filed or furnished.

EXHIBIT INDEX

Exhibit No.		Description
99.1		Press release of Vertical Aerospace Ltd. dated August 4, 2025

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	Vertical Aerospace Ltd.
Date: August 4, 2025	By:	/s/ Stuart Simpson
		Stuart Simpson
		Chief Executive Officer

FAQ

What did Vertical Aerospace (EVTL) announce in its August 2025 Form 6-K?

The filing details a long-term partnership in which Aciturri will build the entire VX4 airframe and provide structural engineering support.

Who is Aciturri and why is it important for EVTL?

Aciturri is a global Tier-1 aerostructures supplier with Airbus/Boeing experience, bringing manufacturing expertise to the VX4 programme.

Does the agreement cover engineering responsibilities as well as manufacturing?

Yes. Aciturri will have engineering responsibility for several structural components and deliver concurrent manufacturing engineering.

Were financial terms or production volumes disclosed?

No. The 6-K does not disclose pricing, quantities or cost-sharing details.

Is the partnership dependent on regulatory certification of the VX4?

Aciturri will build pre-production units now, but production for service entry is subject to successful VX4 certification.