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

Rhea-AI Filing Summary

Vertical Aerospace (EVTL) filed a Form 6-K announcing a long-term airframe partnership with Spain-based Aciturri Aerostructures, effective 1 Aug 2025. Under the agreement Aciturri will design, manufacture and supply the entire airframe—wing, empennage, pylons and fuselage—for both pre-production and certified versions of the company’s VX4 electric/hybrid eVTOL.

Aciturri will also take engineering responsibility for several structural elements and provide concurrent manufacturing engineering, giving Vertical a single-source supplier for the programme’s critical structure. A related press release (Ex. 99.1) was issued on 4 Aug 2025.

The filing contains the usual forward-looking-statement safe-harbour and incorporates the 6-K (excluding the exhibit) into three existing shelf registration statements (F-3 Nos. 333-270756, 333-284763, 333-287207).

Investment take-away: the deal strengthens VX4 industrialisation by adding a Tier-1 aerostructures partner, potentially de-risking certification and scale-up. Financial terms, production volumes and milestone timelines were not disclosed.

Insights

Aerospace Equity Analyst

TL;DR: Partnership secures critical airframe supply, modestly de-risks VX4 path but lacks financial detail.

Aciturri is a proven Tier-1 supplier for Airbus and Boeing. Assigning full airframe responsibility consolidates accountability and shortens Vertical’s learning curve, which is positive for certification and scalability. However, no capex, unit-cost or volume commitments were disclosed, leaving margin impact uncertain. Success still hinges on EASA/FAA approval, a material gating factor for revenue realisation.

Risk Analyst

TL;DR: Supply-chain risk reduced, certification and funding risk remain material.

Moving structural design to Aciturri lowers Vertical’s execution risk and may attract investors looking for industrial rigor. Yet absent pricing or exclusivity clauses, cost overruns could flow back to Vertical. The company still needs capital for flight-test, certification and production, so the overall risk profile is only partially mitigated.

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 the Form 6-K?

A long-term partnership whereby Aciturri will design and build the entire airframe for the VX4 eVTOL.

Who is Aciturri Aerostructures?

A Spain-based Tier-1 aerostructures supplier that manufactures components for leading commercial aircraft OEMs.

Does the filing disclose financial terms or production volumes?

No; the agreement’s cost structure, unit volumes and revenue impact were not provided.

How does this partnership affect VX4 certification?

Using an experienced aerostructures partner may streamline engineering validation, but certification timelines are still uncertain.

Is the 6-K incorporated into existing shelf registrations?

Yes, it is incorporated by reference into Form F-3 registration statements 333-270756, 333-284763 and 333-287207.