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Fully diluted ownership: Beyond issued equity shares

23 September 2025

by Netri Agarwal

‘Fully diluted shareholding’ describes a methodical approach to calculating a company’s equity structure, whereby all securities that can be converted into equity including stock options, warrants, convertible debentures, and similar instruments are assumed to have been exercised or converted into shares. This calculation presents a comprehensive picture of a company’s potential ownership and control, ensuring transparency for all concerned parties in transactional matters. Its significance is especially pronounced in transaction documents such as share purchase agreements, share subscription agreements, etc.

This concept of ‘fully diluted shareholding’ has evolved from the necessities of accurate financial reporting and fair valuation in increasingly complex capital structures. It was developed to provide investors, analysts, and stakeholders with an inclusive view of a company’s ownership by assuming all convertible securities were exercised or converted into shares. Over time, this transcended its accounting origins and gained widespread acceptance in transactions, corporate governance, and regulatory frameworks across multiple jurisdictions, including India. Today, the fully diluted basis is firmly integrated into important regulations such as the Consolidated FDI Policy, Foreign Exchange Management (Non-Debt Instruments) Rules, 2019, SEBI regulations, and RBI Master Directions, ensuring clarity, fairness, and regulatory compliance in shareholding calculations.

The application of a fully diluted basis is fundamental to structuring shareholder rights and obligations across the board. The essential governance mechanisms such as voting rights, board representation, drag-along and tag-along provisions, anti-dilution protections, and liquidation preferences are most effectively and equitably calibrated when shareholding is calculated on fully diluted.

One critical example illustrating this principle would be the exercise of pre-emptive rights, such rights enable existing shareholders to maintain their proportional stake in the company by offering the first opportunity to purchase new shares before they are issued to external parties. When calculated on a fully diluted basis, pre-emptive rights safeguard shareholders against dilution arising not just from newly issued shares but also from the potential conversion of outstanding instruments. This ensures both current shareholders and investors in having a predictable, equitable framework to uphold their percentage ownership as the company grows or reorganizes its capital stock.

Lastly, a distinction must be drawn between the shareholding ‘as on a converted basis’ and the ‘fully diluted basis.’ The concept of ‘as on a converted basis’ applies in scenarios focusing on particular convertible securities, measuring ownership assuming those specific instruments convert into equity; for instance, if an investor holds convertible debentures in a company, their shareholding as on a converted basis would be measured by assuming only those debentures have been converted into equity shares, even if the conversion has not yet taken place. It is narrower and specific to defined conversion instruments. Conversely, the fully diluted basis of shareholding embraces all outstanding convertible instruments collectively including stock options, warrants, convertible debentures, etc., regardless of likelihood of their conversion, thereby offering a comprehensive snapshot of potential equity distribution.

In conclusion, calculating shareholding on a fully diluted basis presents a more nuanced and comprehensive understanding of a company’s ownership structure, however, its application depends on the specific circumstances and contractual understanding between the parties. While calculations based on fully diluted basis often provide greater clarity and predictability in equity distribution, their relevance and appropriateness must be carefully evaluated case by case. Consequently, a fully diluted basis of shareholding serves as an important tool within modern corporate law and business practice.

[The author is an Associate in Corporate and M&A practice at Lakshmikumaran & Sridharan Attorneys, Hyderabad]

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