6-K
Vertical Aerospace Ltd. (EVTL)
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 December 2025
CommissionFile Number: 001-41169
Vertical Aerospace Ltd.
(Exact Name of Registrant as Specified in ItsCharter)
Unit 1 Camwal Court, Chapel Street
Bristol BS2 0UW
United Kingdom
(Address of principal executiveoffice)
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 Supplier Partnership with Syensqo
Vertical Aerospace Ltd. (the “Company”), through its wholly owned subsidiary, Vertical Aerospace Group Limited, and Cytec Engineered Materials Inc. (“Syensqo”), a gobal leader in advanced materials, entered into a long-term supply partnership, pursuant to which Syensqo’s composite and adhesive materials will be integrated across the entire structure of the Company’s electric and hybrid-electric vertical take-off and landing (“eVTOL”) aircraft, the VX4. The Company and Syensqo have entered into a Long-Term Development and Supply Agreement, which will become irrevocable on December 26, 2025.
Under the partnership agreement, Syensqo will supply the composite and adhesive materials for use across the entire VX4 structure including the wing, empennage, pylons and fuselage, of both the pre-production and, subject to certification, certified VX4 that will enter into service. The VX4’s airframe itself will be manfuactured by Aciturri, a leading global aerostructures supplier.
Press Release
On December 8, 2025, the Company issued a press release in relation to the Company’s partnership with Syensqo, a copy of which is furnished as Exhibit 99.1 hereto.
Forward-Looking Statements
ThisReport of Foreign Private Issuer on Form 6-K (the “Form 6-K”) contains forward-looking statements within the meaningof the Private Securities Litigation Reform Act of 1995. Any express or implied statements contained in this Form 6-K that are notstatements of historical fact may be deemed to be forward-looking statements, including, without limitation, statements regarding apartnership with Syensqo for advanced composites and adhesive materials, including Syensqo’s supply and obligations under the partnershipagreement, the efficiencies, reliability and expertise expected, the design and manufacture of the VX4 and the hybrid-electric variant,certification and the commercialization of the VX4 and our ability to achieve regulatory certification of our aircraft product on anyparticular timeline or at all, the features and capabilities of the VX4, business strategy and plans and objectives of management forfuture operations, including the building and testing of our prototype aircrafts on timelines projected, completion of the piloted testprogramme 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 likelyto” and similar statements of a future or forward-looking nature. These forward-looking statements reflect our current views withrespect to future events and are not a guarantee of future performance. Actual outcomes may differ materially from the information containedin the forward-looking statements as a result of a number of factors, including, without limitation, the important factors discussed underthe 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 withthe SEC. Any forward-looking statements contained in this Form 6-K speak only as of the date hereof and accordingly undue relianceshould not be placed on such statements. the Company disclaims any obligation or undertaking to update or revise any forward-looking statementscontained in this Form 6-K, whether as a result of new information, future events or otherwise, other than to the extent requiredby applicable law.
INCORPORATION BY REFERENCE
The information included in this Report on Form 6-K (excluding Exhibit 99.1) is hereby incorporated by reference into the Company’s Registration Statements 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<br><br> <br>No. | Description |
|---|---|
| 99.1 | Press release of Vertical Aerospace Ltd. dated December 8, 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: December 8, 2025 | By: | /s/ Stuart Simpson |
| Stuart Simpson | ||
| Chief Executive Officer |
Exhibit 99.1
Vertical Aerospace Partners with Syensqo to Support IndustrialisationPlan for the VX4 Aircraft
| · | Syensqo<br> to supply composite materials for the VX4’s entire structure |
|---|---|
| · | Partnership<br> strengthens Vertical’s industrialisation plan across commercial and defence applications |
| --- | --- |
| · | Builds<br> on earlier partnerships with Honeywell and Aciturri |
| --- | --- |
London,UK & New York, USA – December 8, 2025 – Vertical Aerospace (“Vertical” or “Company”) [NYSE:EVTL], a global aerospace and technology company that is pioneering electric aviation, and Syensqo, a global leader in advanced materials, today announced a new long-term supplier partnership.
Syensqo’s high-performance composite and adhesive materials - already used in Vertical’s prototype programme - have been selected for the VX4 aircraft, which is targeting certification in 2028 before entering into commercial service. This comes after multiple years of close collaboration between the teams at Syensqo and Vertical.
Syensqo’s advanced materials will be integrated across the entire structure, providing the lightweight strength, structural efficiency and durability required for the high-cycle operations of electric vertical flight. Securing advanced composite materials is critical in ensuring the VX4 can withstand repeated take-offs and landings while maintaining safety and performance at scale.
The VX4’s airframe itself will be manufactured by Aciturri, a leading global aerostructures supplier, supporting Vertical’s transition into full commercial production.
Syensqo brings extensive aerospace experience, supplying advanced materials to many of the world’s leading aircraft manufacturers and defence companies. This experience makes Syensqo an ideal partner as Vertical advances toward both civil and defence applications of its aircraft platform.
StuartSimpson, CEO, Vertical Aerospace, said: “We are bringing the VX4 to market alongside leading global partners, and deepening our successful partnership with Syensqo as our advanced-materials supplier is a vital step in that journey. Their decades of expertise in lightweight, high-performance composites - combined with our shared commitment to safety and certification - will help us deliver a resilient, agile aircraft as we progress toward commercial operations.”
RodrigoElizondo, President Syensqo Composite Materials, said: “We are honored to deepen our collaboration with Vertical. Our advanced composite and adhesive technologies are designed to push the boundaries of lightweighting and performance, supporting the VX4’s journey toward safer, cleaner and more efficient air mobility. As Vertical moves into certification and industrialisation, we look forward to bringing our scientific expertise and strong customer partnership to support the VX4’s successful entry into full-scale production."
This extension of Vertical’s partnership with Syensqo comes as Vertical continues to formalise the core supply chain for its certification aircraft, alongside Honeywell, Aciturri, and other global partners.
Vertical plans to unveil its new aircraft design on 10 December in London, showcasing the VX4’s industry-leading design, passenger and luggage capacity, and global certification-ready architecture.
About Vertical Aerospace
Vertical Aerospace is a global aerospace and technology company pioneering electric aviation. Vertical is creating a safer, cleaner, and quieter way to travel. Its VX4 is a piloted, four-passenger, Electric Vertical Take Off and Landing (eVTOL) aircraft, with zero operating emissions. Vertical is also developing a hybrid-electric variant, offering increased range and mission flexibility to meet the evolving needs of the advanced air mobility market.
Vertical combines partnerships with leading aerospace companies, including GKN, Honeywell, and Aciturri, with its own proprietary battery and propeller technology to develop the world’s most advanced and safest eVTOL.
Vertical has c.1,500 pre-orders of the VX4, with customers across four continents, including American Airlines, Japan Airlines, GOL, and Bristow. Certain customer obligations are expected to be fulfilled via third-party agreements. Headquartered in Bristol, UK, Vertical’s experienced leadership team comes from top-tier aerospace and automotive companies such as Rolls-Royce, Airbus, GM, and Leonardo. Together, they have previously certified and supported over 30 different civil and military aircraft and propulsion systems.
For more information:
Justin Bates, Head of Communications [email protected] +44 7878 357 463
Samuel Emden, Head of Investor Affairs [email protected] +447816 459 904
About Syensqo
Syensqo is a science company developing groundbreaking solutions that enhance the way we live, work, travel and play. Inspired by the scientific councils which Ernest Solvay initiated in 1911, we bring great minds together to push the limits of science and innovation for the benefit of our customers, with a diverse, global team of more than 13,000 associates in 30 countries.
Our solutions contribute to safer, cleaner, and more sustainable products found in homes, food and consumer goods, planes, cars, batteries, smart devices and healthcare applications. Our innovation power enables us to deliver on the ambition of a circular economy and explore breakthrough technologies that advance humanity.
Learn more at www.syensqo.com.
Contacts
| Media<br> relations | Business<br> contact |
|---|---|
| Perrine<br> Marchal | Claire Michel |
| +32 478<br> 32 62 72 | Materials Marketing Communications<br> Director |
| [email protected] | |
| Laetitia<br> Schreiber | |
| +32 487<br> 74 38 07 | |
| [email protected] |
Follow us on LinkedIn @Syensqo | Follow us on Instagram @Syensqo
Forward-Looking Statements
This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Any express or implied statements contained in this press release that are not statements of historical fact may be deemed to be forward-looking statements, including, without limitation, statements regarding a partnership with Syensqo for advanced composites and adhesive materials, including Syensqo’s supply and obligations under the partnership agreement, the efficiencies, reliability and expertise expected, the design and manufacture of the VX4 and the hybrid-electric variant, 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 press release 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 press release, whether as a result of new information, future events or otherwise, other than to the extent required by applicable law.