Regulatory Landscape
SEC registration, antitrust review, CFIUS, and ongoing compliance obligations
~20 min read
Private equity firms operate in a layered regulatory environment that touches every stage of the fund lifecycle: formation, fundraising, deal execution, portfolio management, and exit. At the federal level, the SEC regulates PE firms as investment advisers. Antitrust authorities review acquisitions above certain size thresholds. National security agencies scrutinize foreign investment. And at the state level, blue sky laws impose their own registration and filing requirements.
For most of PE's history, the industry operated with relatively light regulatory oversight. That changed significantly after the Dodd-Frank Act of 2010, which eliminated the 'private adviser exemption' that had allowed most PE firms to avoid SEC registration. Today, virtually every PE firm managing more than $150 million in assets must register with the SEC as an investment adviser and comply with extensive reporting, recordkeeping, and disclosure requirements. This lesson covers the key regulatory frameworks that PE professionals encounter in practice.
SEC Registration and Reporting
Under the Investment Advisers Act of 1940 (as amended by Dodd-Frank), PE firms managing over $150 million in assets under management must register with the SEC as investment advisers. Registration requires filing Form ADV, a two-part disclosure document. Part 1 covers the firm's business, ownership, clients, employees, disciplinary history, and conflicts of interest. Part 2 (the 'brochure') is a narrative document that must be delivered to investors and describes the firm's advisory services, fees, investment strategies, and risk factors.
Registered advisers must also file Form PF (Private Fund), which provides the SEC with detailed information about the fund's portfolio, leverage, counterparty exposure, and risk profile. For large PE advisers (those managing $2 billion or more in PE fund assets), Form PF requires extensive quarterly and annual reporting. Smaller advisers file annually. The SEC uses Form PF data for systemic risk monitoring and increasingly for targeted examination priorities.
Registration brings ongoing compliance obligations: maintaining a written compliance program, designating a Chief Compliance Officer (CCO), adopting a code of ethics, keeping detailed books and records, and submitting to periodic SEC examinations. SEC examiners typically review a PE firm's valuation practices, fee and expense allocation, conflicts of interest, and marketing materials.
HSR Antitrust Review Process
Size-of-Transaction Test
Determine whether the deal meets the HSR filing threshold. As of 2025, transactions valued above approximately $119.5 million (adjusted annually for GDP) require an HSR filing. Most PE buyouts exceed this threshold.
Pre-Filing and HSR Filing
Both buyer and seller submit HSR filings to the FTC and DOJ, along with a filing fee ($30,000 to $2.25 million depending on deal size). The filing includes information about both parties' business activities, revenues by industry, and any competitive overlaps.
Initial Waiting Period
A 30-day waiting period begins after filing. During this time, the FTC and DOJ decide which agency will review the transaction and whether it raises competitive concerns. The deal cannot close until the waiting period expires or is terminated early.
Early Termination or Second Request
If no concerns arise, the agencies grant early termination (often within 2-3 weeks). If they identify potential competitive issues, they issue a 'Second Request,' a detailed investigation that can extend the review by 6-12 months and require the production of millions of documents.
Resolution
After a Second Request, the agency may clear the deal, negotiate a consent decree requiring divestitures, or seek to block the transaction in federal court. PE add-on acquisitions in concentrated industries (healthcare, defense, industrials) are increasingly likely to receive Second Requests.
Size-of-Transaction Test
Determine whether the deal meets the HSR filing threshold. As of 2025, transactions valued above approximately $119.5 million (adjusted annually for GDP) require an HSR filing. Most PE buyouts exceed this threshold.
Pre-Filing and HSR Filing
Both buyer and seller submit HSR filings to the FTC and DOJ, along with a filing fee ($30,000 to $2.25 million depending on deal size). The filing includes information about both parties' business activities, revenues by industry, and any competitive overlaps.
Initial Waiting Period
A 30-day waiting period begins after filing. During this time, the FTC and DOJ decide which agency will review the transaction and whether it raises competitive concerns. The deal cannot close until the waiting period expires or is terminated early.
Early Termination or Second Request
If no concerns arise, the agencies grant early termination (often within 2-3 weeks). If they identify potential competitive issues, they issue a 'Second Request,' a detailed investigation that can extend the review by 6-12 months and require the production of millions of documents.
Resolution
After a Second Request, the agency may clear the deal, negotiate a consent decree requiring divestitures, or seek to block the transaction in federal court. PE add-on acquisitions in concentrated industries (healthcare, defense, industrials) are increasingly likely to receive Second Requests.
CFIUS Review
The Committee on Foreign Investment in the United States (CFIUS) reviews transactions that could give a foreign person control over a U.S. business, with a focus on national security implications. For PE, CFIUS is relevant in two scenarios: (1) when a PE fund with significant foreign LP capital acquires a U.S. company in a sensitive sector, and (2) when a foreign-owned PE firm acquires a U.S. target.
The Foreign Investment Risk Review Modernization Act (FIRRMA) of 2018 expanded CFIUS's jurisdiction significantly. CFIUS now covers non-controlling investments in U.S. businesses that deal with critical technology, critical infrastructure, or sensitive personal data of U.S. citizens. Certain transactions in these areas require mandatory filing.
CFIUS review is voluntary for most transactions, but parties that fail to file risk having CFIUS initiate a review on its own (and potentially unwind the deal after closing). Review timelines run 45 days for the initial review, with a possible 45-day investigation extension. In practice, most PE firms with significant foreign LP bases have developed internal CFIUS screening protocols to identify potential issues early in the deal process.
State-Level Regulations
Beyond federal requirements, PE firms must navigate state-level securities laws (blue sky laws). While the National Securities Markets Improvement Act (NSMIA) preempts most state regulation of SEC-registered advisers, states still require notice filings and may impose their own requirements on firms operating within their borders. Certain states, notably California and New York, have additional requirements around pay-to-play rules (restricting political contributions by PE professionals who seek investments from state pension funds).
Anti-Money Laundering and Know Your Customer
PE firms must implement Anti-Money Laundering (AML) and Know Your Customer (KYC) procedures to verify the identity and source of funds for every investor. While PE funds are not currently subject to the Bank Secrecy Act's full requirements (unlike banks and broker-dealers), industry best practice and LP expectations have made robust AML/KYC programs standard.
In practice, this means verifying the identity of each LP (and the beneficial owners behind institutional LPs), screening investors against OFAC sanctions lists, and conducting enhanced due diligence on investors from higher-risk jurisdictions. The Corporate Transparency Act (effective 2024) imposes additional beneficial ownership reporting requirements that affect both PE fund entities and their portfolio companies.
Failure to maintain adequate AML/KYC programs can have severe consequences: regulatory enforcement actions, reputational damage, and the risk that a fund unknowingly accepts capital from sanctioned individuals or entities. Large PE firms typically employ dedicated compliance teams that run these processes for every new fund and every new investor subscription.
HSR Second Request: Illumina/GRAIL
The power of antitrust review was demonstrated in the Illumina/GRAIL transaction. Illumina, a genomics company, attempted to reacquire GRAIL (a cancer detection startup it had previously spun off) for $7.1 billion in 2021. The FTC issued a Second Request and ultimately sued to block the deal, arguing it would harm competition in the multi-cancer early detection test market. Illumina closed the acquisition anyway while litigation was pending, but in 2023, the FTC ordered Illumina to divest GRAIL.
While this was a strategic acquisition rather than a PE deal, it illustrates the risk that PE firms face when executing add-on acquisitions in concentrated markets. PE-backed platform companies that grow through serial acquisitions in healthcare, technology, or industrial sectors face increasing antitrust scrutiny. Firms must factor potential Second Request risk (including timing delays of 6-12 months and legal costs of $10-50 million) into their deal underwriting.
FTC press releases; public filings (2021-2024)
Quiz: Regulatory Landscape
5 questions · ~3 min