Subscription Documents and Side Letters in Private Funds: A Legal Guide

Introduction

The legal architecture of a private investment fund — whether a Cayman Islands exempted limited partnership, a Hong Kong limited partnership fund, or a BVI business company — is defined not only by the fund's constitutional documents (the limited partnership agreement, operating agreement, or offering memorandum) but also by the subscription agreements and side letters entered into with individual investors. These investor-specific documents can be as commercially significant as the fund's constitutional documents themselves, shaping the economic terms, information rights, and governance rights of the fund's largest and most sophisticated investors.

This article examines the key features of subscription agreements and side letters in private investment funds, with particular focus on the Hong Kong regulatory context and the negotiating dynamics that typically arise between fund managers and institutional investors.

Subscription Agreements

A subscription agreement is the contract through which an investor commits to invest in a private fund. By executing the subscription agreement, the investor subscribes for units, shares, or limited partnership interests in the fund and makes the representations, warranties, and acknowledgements required by the fund to satisfy its legal and regulatory obligations.

Investor Representations and Warranties

The subscription agreement requires the investor to make representations and warranties about its status, authority, and investment sophistication. Key representations typically include:

Status as a Professional Investor: Under the Securities and Futures Ordinance (SFO), a fund that is offered only to professional investors (as defined in Schedule 1 of the SFO) benefits from various regulatory exemptions, including exemption from the SFC's product authorisation requirements and certain restrictions on marketing. The subscription agreement must therefore contain representations from each investor confirming its status as a professional investor.

ERISA Status: For US pension fund investors, a representation regarding their status under the US Employee Retirement Income Security Act (ERISA) is typically required. The fund's investment in "plan assets" subject to ERISA can create significant compliance burdens, and fund managers typically seek to limit the proportion of ERISA investors to below the threshold that would make the fund subject to ERISA.

FATCA and CRS Representations: All investors are required to provide representations and supporting documentation to enable the fund's administrator to fulfil the fund's FATCA and Common Reporting Standard (CRS) obligations. This includes identifying the investor's tax residence and providing a W-8 or W-9 form (for US tax purposes) or a self-certification form (for CRS purposes).

AML/KYC Confirmation: The subscription agreement typically includes representations that the investor is not a restricted person under applicable sanctions laws, that the investment funds do not represent proceeds of money laundering or other criminal activity, and that the investor consents to the fund's AML/KYC verification procedures.

Subscription Process

The subscription process for a private fund typically involves the investor completing and signing the subscription agreement (together with any required KYC documentation) and remitting the subscription amount to the fund's bank account by the subscription deadline. The fund manager reviews the subscription documents, verifies the investor's KYC documentation, and either accepts or rejects the subscription (subject to any applicable anti-discrimination requirements).

For closed-ended private equity and private credit funds, subscriptions are typically accepted at periodic closings during the fundraising period. Investors who subscribe at subsequent closings typically pay interest on their capital commitment from the first closing date, to equalise their economic position with earlier investors.

Side Letters

A side letter is a bilateral agreement between a fund manager (or the general partner of a fund) and a specific investor, which modifies or supplements the investor's rights under the fund's constitutional documents. Side letters are a standard feature of institutional private fund investing and may address a wide range of economic, reporting, and governance matters.

Why Investors Negotiate Side Letters

Institutional investors — including pension funds, sovereign wealth funds, insurance companies, fund-of-funds, and family offices — negotiate side letters for a variety of reasons. They may have specific legal requirements (such as ERISA fiduciary obligations or charity law constraints) that require modifications to the standard fund terms. They may have investment mandates that prohibit investment in certain asset classes or that impose concentration limits. They may have reporting requirements that go beyond the standard investor reporting provided by the fund. Or they may simply have sufficient negotiating leverage, by virtue of the size of their commitment, to extract preferential economic terms.

Common Side Letter Provisions

Management Fee Reductions: Anchor investors and large institutional investors often negotiate reductions in the management fee payable on their committed capital. Fee reductions may be structured as a percentage reduction (e.g., a 0.25% reduction in the annual management fee), a rebate mechanism, or a waiver of fees during the fundraising period. Management fee reductions represent a direct economic benefit to the investor and are among the most commonly negotiated side letter provisions.

Carried Interest Modifications: Some investors negotiate modifications to the carried interest waterfall applicable to their investment, including preferred return rate modifications, catch-up modifications, or the establishment of a separate "economic series" with modified carried interest terms.

Co-Investment Rights: Institutional investors frequently negotiate the right to co-invest alongside the fund in specific transactions, typically on reduced fee and carry terms or on a no-fee, no-carry basis. Co-investment rights allow investors to increase their exposure to attractive deals without paying the full fund economics on those deals.

Information Rights: Institutional investors may require enhanced information rights beyond the standard quarterly and annual reporting provided to all investors, including more frequent NAV reports, transaction-level reporting, environmental and social governance (ESG) metrics, and access to the fund manager's senior investment professionals for periodic discussions.

ERISA and Regulatory Provisions: US pension funds and other ERISA-regulated investors may require side letter provisions addressing the "plan assets" analysis, including provisions limiting the fund's ERISA exposure, providing for disclosure of certain information required by ERISA fiduciaries, and establishing procedures for the investor to withdraw its commitment if a plan assets issue arises.

Most Favoured Nation (MFN) Clauses: A most favoured nation (MFN) clause entitles the investor to the benefit of any more favourable terms granted to other investors in the same fund. MFN clauses vary significantly in their scope: some are "full MFN" provisions that entitle the investor to elect any term granted to any other investor; others are "selective MFN" provisions that entitle the investor only to elect terms granted to investors of a comparable size or type.

MFN Administration

The administration of MFN clauses across a fund's investor base can be complex. Where multiple investors hold MFN rights and different investors have negotiated different preferential terms, the fund manager must maintain a schedule of all side letter provisions and manage the MFN election process at each closing or when new side letters are entered into. Legal counsel can assist in designing an MFN framework that balances investors' interests with the manager's operational constraints.

Negotiating Side Letters: Practical Considerations

Timing

Side letters are typically negotiated during the fundraising process, ideally before the relevant investor's closing. Last-minute side letter negotiations can delay closings and create execution risk. Fund managers who are proactive in engaging with anchor investors early in the fundraising process tend to close their funds more efficiently.

Consistency and Precedent

Each concession made in a side letter creates a precedent that subsequent investors may seek to invoke through MFN clauses or general negotiating leverage. Fund managers should approach side letter negotiations with a clear understanding of which concessions they are willing to make consistently across all investors and which concessions they wish to limit to specific investors.

Regulatory Constraints

Certain side letter provisions may conflict with regulatory requirements or with the fund's constitutional documents, and the fund manager must ensure that any side letter provisions are legally permissible. In Hong Kong, the SFC's Code of Conduct and the Fund Manager Code of Conduct impose restrictions on conflicts of interest that must be considered when entering into preferential arrangements with individual investors.

Conclusion

Subscription documents and side letters are essential components of the private fund investor relationship, and their negotiation requires a thorough understanding of fund economics, regulatory requirements, and the commercial dynamics of institutional fund investing. A well-structured subscription and side letter framework reduces legal risk, facilitates efficient fund operations, and supports strong long-term investor relationships.

Alan Wong LLP's investment funds team advises fund managers and institutional investors on the drafting and negotiation of subscription agreements and side letters across a range of fund structures and strategies. We bring practical experience in the negotiation of complex investor terms and a deep understanding of the Hong Kong regulatory context to every engagement.