RSUs, Stock Options, and PSUs: The HR Professional's Guide to Equity Vehicles
A practitioner guide to executive compensation
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Equity compensation is the area of total rewards where the vocabulary most often gets in the way of the substance. RSU, PSU, option, phantom equity — these terms get used interchangeably in casual conversation, but each represents a genuinely different financial instrument with different implications for the recipient, the employer, and the company's cap table. Understanding the distinctions is not just a technical nicety; it is the prerequisite for advising meaningfully on executive pay design.
The Core Design Challenge
Restricted Stock Units are promises. The employer promises to deliver a specified number of shares at a future date, contingent on continued employment and sometimes on performance conditions. When the RSU vests, the employee receives actual shares (or their cash equivalent), which they can typically sell immediately. The value is transparent — it is simply the share price at vesting multiplied by the number of units. RSUs are relatively simple to communicate, have a definite value that employees can calculate, and create a direct ownership experience. They have become the dominant equity vehicle in listed companies globally over the past decade.
Performance Share Units are RSUs with a performance dimension. The number of shares that vest is not fixed — it varies between zero and some maximum (typically 0-200% of the target award) depending on how the company performs against defined metrics over the vesting period. Metrics commonly include Total Shareholder Return relative to a peer group, earnings per share growth, and increasingly ESG-linked measures such as carbon reduction or employee engagement improvement. PSUs create stronger performance alignment than time-vested RSUs because the recipient's financial outcome is genuinely tied to business performance — but they are more complex to communicate and more difficult for recipients to value intuitively.
Stock options give the recipient the right to purchase shares at a fixed price (the exercise price, usually set at the market price on the date of grant) at any future date within the option's life. If the share price rises above the exercise price, the option has intrinsic value — the holder can buy at the lower exercise price and sell at the higher current market price. If the share price falls, the option is worthless (underwater) and the holder has no value to realise. Options create strong upside alignment but generate no value at all unless the share price rises from the grant date.
How the Approach Works
Phantom equity replicates the economics of equity ownership without involving actual shares. The employer tracks a notional number of 'units' assigned to an employee and, at a defined settlement trigger (typically a defined date or an exit event), pays out cash equivalent to the change in unit value. Phantom equity is common in private companies where actual shares are illiquid or where dilution is a concern. It provides the alignment benefits of equity without the legal and administrative complexity of issuing actual shares to employees.
The choice between these vehicles should not be made by default. For a pre-revenue startup, options granted when the exercise price is very low preserve maximum upside for early employees. For a PE-backed company approaching an exit, management equity participation structures tied to the exit event create the strongest alignment with the PE owner's own return. For a listed company seeking governance approval from institutional investors, PSUs with transparent, independently verifiable performance conditions are now the expected standard in most markets.
For HR professionals advising on equity design, the key questions are not technical — they are contextual. Is there a liquid market for the shares? Does the organisation have the headroom in its dilution limit? What is the expected vesting timeline relative to the business's strategic events? What governance standards apply? These questions, answered before the vehicle selection conversation, determine which instrument is appropriate — not a general preference for one over another.
- →Phantom equity replicates the economics of equity ownership without involving actual shares.
- →The choice between these vehicles should not be made by default.
- →For HR professionals advising on equity design, the key questions are not technical — they are contextual.