In this storyTonbo Imaging

The Story

1 min

Tonbo Imaging has received SEBI's observations on its proposed IPO, clearing it to proceed with an offer that raises nothing for the company.

The regulator issued observations on 21 September. The issue comprises an offer for sale of up to 1,80,85,246 equity shares with no fresh issue component, so proceeds accrue entirely to selling shareholders. Cofounders Arvind Kondangi Lakshmikumar, Ankit Kumar and Cecilia D'Souza will pare their holdings, alongside a promoter group shareholder and existing investors.

The Bengaluru company filed its first draft prospectus in December 2025 and received approval in July, then filed fresh papers in August with the offer size largely unchanged.

Founded in 2003 and refocused on defence products in 2012, Tonbo makes thermal imaging cores, weapon sights, thermal binoculars, targeting systems, missile seekers, fire-control systems and missile-guidance systems. It had deployed more than 28,000 systems across 24 countries as of 31 March 2026.

A Frost & Sullivan report cited in its prospectus identifies Tonbo as the largest manufacturer by sales value of thermal imaging systems supplied to Indian government and defence agencies between FY24 and FY26, accounting for 94.3 per cent of India's thermal imaging exports by units. The company says it has owned all of its intellectual property since FY24, spanning optics, embedded software and electronics, and follows an asset-light model, outsourcing production to partners including Kaynes Technology India and Avalon Technology.

Its backers include Qualcomm Ventures, Artiman, Celesta, Edelweiss Value and Growth Fund, HBL Engineering, Tenacity Ventures, EXIM Bank of India and Florintree.

Operating revenue fell 22.7 per cent to β‚Ή299.9 crore in FY26 from β‚Ή374.3 crore. Net profit fell 30 per cent to β‚Ή362.6 crore from β‚Ή469.1 crore.

Key numbers
1.81 crore shares, all OFS
Offer Size
β‚Ή299.9 crore, down 22.7%
FY26 Operating Revenue
28,000+ across 24 countries
Systems Deployed
94.3% by units
Share Of India's Thermal Imaging Exports

Why It Matters

1 min

One pair of figures in the filing needs explaining before anything else.

Tonbo reports operating revenue of β‚Ή299.9 crore for FY26 and net profit of β‚Ή362.6 crore. The profit is larger than the revenue. For that to hold, a substantial part of the company's earnings must come from outside its trading operations, whether investment income, one-off gains, government incentives or accounting treatments the prospectus will detail.

None of that is necessarily irregular. But a company going to market on the strength of its profitability, where profitability exceeds turnover, is asking investors to underwrite something other than the sale of its products. Anyone reading the red herring prospectus should find that reconciliation first.

Both figures also moved the wrong way. Revenue fell 22.7 per cent and profit fell 30 per cent, in a year when Indian defence spending and defence manufacturing sentiment were both strong. That is a company whose results are driven by order timing rather than by demand, which is normal for the sector and uncomfortable in a listing year.

The structure compounds the question. There is no fresh issue, so nothing raised goes into the business. The offer exists to let cofounders and investors who have held since well before 2012 convert a position into cash, in a year when the numbers were falling.

The Strategic Read

1 min

What Tonbo owns is more interesting than what it sells.

The company says it has held all of its intellectual property since FY24, across optics, embedded software and electronics, while outsourcing manufacturing to Kaynes and Avalon. That is the arrangement most Indian defence suppliers do not have. The conventional structure is licensed foreign technology assembled locally, which produces revenue without ownership and leaves the supplier dependent on terms set elsewhere.

Owning the design and renting the factory inverts that. It also explains the export figure. A company accounting for 94.3 per cent of India's thermal imaging exports by units is selling into 24 countries, which it could not do on licensed technology encumbered by the licensor's own territorial restrictions.

That is the genuinely notable part, and it is the thing the falling revenue does not undo. Defence procurement is lumpy by nature. Orders arrive when governments decide, contracts span years, and a single programme slipping a quarter moves an annual number by a fifth. A 22.7 per cent decline in a defence electronics business says less than the same decline would in a consumer one.

The unresolved question is why the founders and investors are selling rather than raising. A company with owned IP, export traction and a dominant domestic position usually wants capital to build capacity. This offer supplies none. Either the business genuinely does not need it, which its asset-light model makes plausible, or the shareholders simply want liquidity after more than two decades. The prospectus will say which.

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