Vertical Aerospace stock: Farnborough flight, UK support and dilution

What the Farnborough flight demonstrated#

At 1:46pm local time on 20 July, Vertical's chief test pilot flew the company's full-scale prototype from vertical take-off into wingborne cruise and back to a vertical landing. Vertical's completion release described it as the first public eVTOL transition demonstration at Farnborough. The claim applies specifically to the airshow; Vertical had completed the manoeuvre during testing before the public event.

Vertical's 16 April Form 6-K states that the company completed a two-way piloted transition under direct UK Civil Aviation Authority (CAA) oversight. The filing's furnished exhibit dates the flight to 14 April and describes a continuous sequence from vertical take-off to wingborne cruise and back to a vertical landing. The Farnborough demonstration added operational visibility and experience away from the company's Cotswold Airport test centre.

The 13 July Form 6-K says the CAA expanded Vertical's Permit to Fly on 10 July to authorise public demonstrations away from Cotswold Airport. A Permit to Fly supports defined flight-test and demonstration activity. Commercial passenger service requires type certification.

The Farnborough aircraft is Vertical's current full-scale prototype. Vertical expects Critical Design Review (CDR) by the end of 2026. Management says that review would establish the certifiable design baseline and enable the build and test of certification-conforming aircraft. The production design remains open until that review is complete.

The UK support package remains conditional#

Vertical's 21 July support release says the company and UK government are in advanced discussions on a package to anchor its first planned full-production sites in the UK. The package would include an additional grant of up to £10 million, taking potential direct UK government grant support to approximately £48 million.

Public support predates the current proposal. An earlier SEC-filed Form F-1 records an £11.4 million Aerospace Technology Institute (ATI) and Innovate UK award that began in October 2020 to support the VX4 prototype-development platform. A February 2024 Form 6-K records an approximately £8.1 million propeller grant, and its filed exhibit calls the project Vertical's fourth ATI award. The exhibit said Vertical had previously been awarded £26 million from ATI and £3 million from the Future Flight Challenge, bringing total UK government grant funding to approximately £37 million after the new award. These figures describe announced awards, with cash receipts reported separately. The award-by-award bridge from that rounded historical figure to the July release's new approximately £48 million potential total remains undisclosed.

The latest cash-receipt detail covers three active or recent programmes. Vertical's 2025 Form 20-F says it had received £9.8 million of an up-to-£14.3 million ATI battery award, £2.2 million of the £8.1 million ATI propeller award and £2.2 million of a £2.3 million UK Research and Innovation award by 31 December 2025. That is £14.2 million received against £24.7 million of award caps across those three programmes. The broader £37 million historical announcement included earlier awards beyond this three-programme receipt total.

The grants also fund only part of eligible project costs: 50% for each ATI programme and 60% for the UK Research and Innovation project. Vertical recognised £5.722 million of government-grant income in 2025, down from £6.870 million in 2024. Under its stated accounting policy, grant income is recognised after an offer has been executed and there is reasonable assurance that its conditions will be met; receivables arise as eligible expenditure is incurred and claimed retrospectively. Adding grant income to cash receipts would double-count part of the same support.

The proposed Department for Business and Trade grant remains subject to legal work, subsidy-control review, due diligence and ministerial approval. A memorandum of understanding with UK Export Finance creates a framework for possible export and customer financing, and the release describes the memorandum as non-binding.

The Ministry of Defence has expressed interest in defence applications for Vertical's eVTOL, hybrid-electric and autonomous capabilities. The issuer's primary text describes exploratory engagement around dual-use opportunities. A funded programme, contract or order has yet to be disclosed.

The most concrete near-term decision is site selection. Vertical is narrowing UK locations for aircraft assembly and battery manufacturing and expects a final siting decision before the end of 2026. Approval of the grant, a binding export-finance arrangement or a defence order would each be a separate later event.

Certification is now a 2029 management target#

The same 13 July Form 6-K that documented the expanded Permit to Fly also moved the expected type-certification date from 2028 to 2029. Vertical said it re-baselined the programme after assessing the remaining certification work, including the build and testing of certification-conforming aircraft.

Management still targets CDR by the end of 2026, an early production aircraft-assembly facility in the third quarter and an expanded battery centre in the fourth quarter. It expects to choose a long-term turbogenerator supplier for the hybrid-electric variant during 2026 and begin hybrid flight testing in the first half of 2027. Each remains a management target pending execution and, where applicable, regulator acceptance.

The public flight leaves the 2029 certification target in place. Demonstrating a prototype is one input to the programme. Certification also requires a fixed design baseline, conforming test aircraft, compliance evidence and regulator acceptance across the aircraft's systems and operating envelope.

How to read the 1,500 pre-orders#

Vertical's July releases refer to approximately 1,500 pre-orders for Valo, its planned four-passenger commercial eVTOL aircraft. The March-quarter SEC operating review describes the pre-orders, options and commitments as conditional, legally non-binding and terminable without penalty by either party. Some pre-delivery payments may also be refundable in defined circumstances. The company generated zero aircraft revenue in the quarter.

The pipeline shows customer interest. A firmer commercial baseline would identify signed purchase agreements, non-refundable deposits, delivery schedules and cancellation terms after certification progress allows customers to make firmer commitments.

The current financial baseline still depends on external capital#

Vertical's final 6 May Form 6-K incorporates its operating review and unaudited interim financial statements for the quarter ended 31 March 2026. The company generated no aircraft revenue in the quarter. Research and development expense was £25.581 million, up 128% year on year; operating loss was £34.316 million, up 28%; and net cash used in operating activities was £35.970 million, up 74%.

Cash and cash equivalents were £73.087 million at 31 March and approximately £76 million at the filing date after April funding. Management projected £135 million to £145 million of net operating cash outflows over the following 12 months, depending on access to its financing package. The forecast range was 1.85 to 1.98 times the March cash balance. The comparison shows the scale of the funding requirement; facility draws, tax receipts, grants, spending timing and later financing determine the actual runway.

The filing says dependence on additional capital creates a material uncertainty that may cast significant doubt on the company's ability to continue as a going concern. The proposed £10 million grant would be linked to UK production sites and would cover only part of the broader funding requirement.

Vertical describes its package as up to US$850 million. Its Q1 release filed with the SEC reported US$50 million of equity raised and described US$30 million as “accessed to date”. The detailed operating review documented US$24 million of cash for an initial preferred-share tranche and a US$5 million additional-note draw notice for 20 May. Access to the remaining capacity depends on the terms, conditions and limits of the equity, note, preferred-share and equity-line instruments.

Share issuance is already part of the funding record#

The SEC filings show that dilution predates the current package. Ordinary shares outstanding rose from 22.125 million at the end of 2023 to 69.543 million at the end of 2024, an increase of 214.3%. The 2024 Form 20-F says Vertical issued 47.344 million shares on 23 December when holders converted approximately US$130 million of notes at US$2.75 per share. The count then reached 101.603 million at the end of 2025, a further 46.1% increase. The main 2025 issuances were 15 million shares in a January offering, 13.8 million in a July offering and 2.987 million through the at-the-market programme.

The share count increased again to 127.328 million by 31 March 2026 after Vertical issued another 25.725 million shares through the at-the-market programme. That was a further 25.3% increase from the December 2025 base. By 6 May, the filed operating review said another 5.017 million ordinary shares had been issued on preferred-share conversions and 334,448 commitment-fee shares had been issued for the equity line. Those specifically disclosed post-quarter issuances imply at least 132.679 million shares. A later comprehensive outstanding-share total remains unavailable. The three percentage changes describe historical issuance; future dilution depends on financing use and conversion terms.

What the financing record means for shareholders#

The flight, certification work, proposed government support and UK production plan can strengthen Vertical's operating case as milestones become binding or complete. Ordinary shareholders participate through each share, so their outcome depends on the equity value created per share. The financing record makes the share denominator central to that calculation.

The disclosed ordinary-share count rose from 22.125 million at the end of 2023 to a lower bound of 132.679 million based on issuances reported by 6 May 2026, almost a sixfold increase. A holder who owned 1.00% at the end of 2023 and kept the same number of shares would own at most 0.167% against that lower bound. The holding retained at most 16.7% of its earlier percentage ownership, an ownership reduction of at least 83.3%.

Vertical's 2024 Form 20-F, 2025 Form 20-F and Q1 interim accounts provide the dated share counts and repeat the split-adjusted closing-price anchors used in their valuation tables. The official NYSE quote history confirms those market prices and records US$1.60 on 20 July 2026. The 2023 input is the 29 December close because 31 December was not a trading day.

On the 132.679 million share-count lower bound, the US$1.60 close implies a market capitalisation of at least US$212.287 million. The 2023 share count and closing price imply US$152.219 million. That is an increase of at least 39.5%. Across the same period, an unchanged 100-share holding fell from US$688 to US$160, a US$528 or 76.7% decline.

The 76.7% figure records the market-value change across the period. No filing can allocate that loss between dilution and the other drivers of EVTL's price, including operating progress, certification timing, financing terms, cash use and market conditions. Issuance can bring cash or retire debt. The ownership-after-dilution column measures the denominator change, while the other columns record the market result.

For an existing shareholder, positive operating news has to be considered alongside the capital required to reach certification and production. The maximum proposed £10 million grant would equal 6.9% to 7.4% of management's projected £135 million to £145 million of net operating cash outflows over the 12 months from the March-quarter filing. That percentage cannot be treated as runway because the grant has eligible-cost restrictions, remains subject to approval and may arrive on a different timetable. The later July certification rebaseline also changed the programme schedule. Progress at Farnborough, CDR, grant approval and a production-site decision can improve the business case. Per-share value also depends on how much cash, debt conversion and new equity fund each milestone.

A prospective shareholder enters at the current price and capital structure. The key per-share questions are the latest ordinary-share count, conversion and exercise terms, cash received or debt retired per new share, and progress delivered with that capital. Vertical has yet to publish a comprehensive count after 31 March; 132.679 million is only a May lower bound.

What remains in the financing overhang#

Several potential-share pools remain. The Q1 filing said the remaining principal under the existing convertible notes could convert into 41.796 million ordinary shares, equal to 32.8% of the March share base before conversion. Vertical's 20 April Series A prospectus separately modelled up to 54.446 million conversion shares and a resulting total of 181.774 million shares at the prospectus floor price. That maximum covers the initial 25,000 preferred shares and potential payment-in-kind preferred shares, including the 5.017 million conversion shares issued by 6 May; it does not model the whole US$250 million preferred facility.

A 26 May resale prospectus registered up to 64.432 million shares tied to the equity line, additional convertible notes and payment-in-kind shares. The registration statement's assumed beneficial-ownership denominator was 191.760 million shares, 50.6% above the March base. These scenarios cover different and sometimes overlapping instruments, prices and conditions, so they cannot be added into one fully diluted total. Registration creates resale capacity, while issuance and sale depend on financing use. Proceeds from shareholder resales go to the selling holders.

Vertical's 2 July shelf prospectus, filed on 6 July repeats the 31 March base of 127.328 million ordinary shares and describes 22.339 million shares as underlying warrants. The Q1 interim accounts show that total includes 200,000 MWC option shares. Adding the 41.796 million shares underlying principal conversion of the existing notes gives 64.135 million potential shares, 50.4% of the March base. Full warrant and option exercise plus principal conversion of the existing notes, using the 31 March base, would produce 191.463 million shares and leave a fixed March-base holding with 66.5% of its former percentage ownership, a 33.5% reduction.

This standalone scenario excludes payment-in-kind interest shares, additional-note principal and payment-in-kind shares, equity-line shares, preferred-share conversions, employee equity beyond the included options and later offerings. Cash exercise would bring cash into Vertical, while a permitted cashless exercise would not; note conversion would exchange debt for equity. The remaining-note principal conversion price is US$3.50, above the US$1.60 reference close, and the 2025 Form 20-F said all outstanding warrants were out of the money on its filing date. The scenario measures contractual share capacity. Near-term exercise and conversion remain uncertain.

The same July prospectus reports 2,000 Series A preferred shares outstanding at 17 June, down from 13,500 disclosed on 6 May. It gives no ordinary-share reconciliation for that change. The original 24-month preferred facility ceiling is up to US$250 million and includes the initial US$25 million face-value tranche, which provided US$24 million of cash. The prospectus also registers capacity for up to US$500 million in aggregate future offerings of ordinary shares, preferred shares, warrants, rights or units. That shelf figure represents registered capacity with no committed funding. Each actual shelf offering requires a prospectus supplement with its amount, price and terms, leaving the shelf without a defensible ordinary-share equivalent today.

Metrics to monitor next#

For certification, watch completion of CDR, assembly of certification-conforming aircraft, the start and scope of compliance testing, and any CAA or European Union Aviation Safety Agency update to the 2029 target.

For industrialisation, watch the final UK site choice, completion of the legal and ministerial processes for the proposed grant, production approvals, the early assembly facility and the expanded battery centre. A binding financing facility, guarantee or customer-financing transaction would mark the next UK Export Finance milestone.

For liquidity, compare cash, quarterly operating cash use, expected tax and grant receipts, facility draws and the number of ordinary and potential shares outstanding. The headline US$850 million is most useful when reconciled to cash actually received, conditions still outstanding and securities issued.

For demand, distinguish conditional pre-orders from binding purchase agreements and eventual aircraft revenue. Defence engagement becomes financially measurable only when it produces a defined funded programme, contract or order.