Sanctions Risk for US-Listed China Stocks: Impact of SDN and Non-SDN List Designations

The re-election of President Donald Trump in November 2024 has fundamentally recalibrated the risk calculus for US-listed Chinese equities, shifting the primary threat from SEC-mandated delisting under the Holding Foreign Companies Accountable Act (HFCAA) to the far more direct and punitive mechanism of US Treasury sanctions. The Biden administration’s executive order of February 2024, which imposed data security restrictions on cross-border data transfers by US persons to certain countries including China, was a precursor; the Trump administration’s return signals a return to transactional, trade-linked sanctions enforcement. For the 248 Chinese companies listed on the NYSE and NASDAQ as of 31 December 2024, with a combined market capitalisation of approximately USD 1.1 trillion, the distinction between being placed on the Specially Designated Nationals and Blocked Persons List (SDN) versus the Non-SDN sanctions lists is now the single most important determinant of share price survival and corporate solvency. A 2024 study by the Peterson Institute for International Economics found that SDN designation resulted in a mean cumulative abnormal return of -34.7% within 30 trading days for affected Chinese issuers, compared to -7.2% for Non-SDN list inclusions. This article dissects the mechanics, market impact, and structural mitigation strategies for CFOs, company secretaries, and cross-border investors navigating this bifurcated sanctions regime.

The Mechanics of SDN vs. Non-SDN Designation for Chinese Issuers

The Office of Foreign Assets Control (OFAC) operates two primary designation tracks, each with distinct legal consequences for US-listed Chinese companies. The SDN list, authorised under the International Emergency Economic Powers Act (IEEPA, 50 U.S.C. § 1701 et seq.), imposes a comprehensive asset freeze: all property and interests in property of the designated entity within US jurisdiction are blocked, and US persons—including US-listed exchanges, clearing houses, and investors—are prohibited from engaging in any transactions with the SDN entity. For a Chinese company listed on the NYSE, this renders its ordinary shares effectively untradeable, as the Depository Trust Company (DTC) cannot process settlement for blocked securities. The Non-SDN list, by contrast, includes the Sectoral Sanctions Identifications (SSI) List and the Non-SDN Chinese Military-Industrial Complex Companies (NS-CMIC) List, which impose narrower restrictions—typically a prohibition on US persons dealing in new equity or debt with a tenor exceeding 14 days, or a ban on US investment in publicly traded securities of the designated entity. The critical distinction for market participants is that Non-SDN designation does not block pre-existing holdings or secondary market trading, provided no new capital is raised from US persons.

The SDN Designation Process and Thresholds for China Issuers

OFAC’s criteria for SDN designation of Chinese entities have historically centred on nexus to sanctioned jurisdictions (Iran, North Korea, Syria, Russia), narcotics trafficking, or weapons proliferation. However, the Trump administration’s 2025 trade policy framework explicitly links SDN designation to tariff evasion and intellectual property theft—areas directly relevant to China’s export-driven manufacturing base. Specifically, Executive Order 13959, as amended by Executive Order 14032 under the Biden administration, was rescinded in March 2025 and replaced by a new order that lowers the evidentiary threshold for SDN designation from “knowingly engaged in” to “reasonably believed to have facilitated” trade-related activities detrimental to US national security. This change is material: OFAC can now designate a Chinese issuer based on circumstantial evidence of transshipment of goods subject to Section 301 tariffs, without requiring a formal criminal conviction or administrative finding. As of 1 July 2025, OFAC had designated 14 Chinese companies under this new standard, including three issuers listed on the NASDAQ—a 250% increase from the total of four SDN-designated China-listed companies during the entire 2021-2024 period.

Non-SDN List Mechanics: The NS-CMIC and SSI Regimes

The NS-CMIC List, originally created under Executive Order 14032, remains the primary Non-SDN tool for targeting Chinese military-industrial complex companies. As of 30 June 2025, the list included 89 Chinese entities, of which 12 were publicly traded on US exchanges—down from 18 at the peak in 2022, following a wave of voluntary delistings and SEC enforcement actions. The key difference from SDN is that NS-CMIC designation prohibits US persons from purchasing or selling publicly traded securities of the designated company, but does not block pre-existing holdings or require divestiture. This creates a bifurcated market: US institutional investors—pension funds, mutual funds, endowments—must cease new purchases, but can hold existing positions indefinitely. The practical effect is a liquidity discount: a 2024 study by the University of Chicago Booth School of Business found that NS-CMIC-designated stocks traded at an average 18.3% discount to their pre-designation price-to-book ratios, with a 40% reduction in US institutional ownership within six months. The SSI List, meanwhile, applies to Chinese entities in the defence, energy, and financial sectors, and prohibits US persons from transacting in new debt or equity with a tenor exceeding 14 days. For a Chinese issuer seeking to raise capital through a follow-on offering, SSI designation effectively blocks access to the US capital markets, forcing reliance on Hong Kong or mainland China placements.

Market Impact: Price Discovery, Liquidity, and Capital Formation Consequences

The market reaction to sanctions designation is not uniform; it depends critically on whether the designation is SDN or Non-SDN, and on the company’s specific corporate structure—particularly its use of a Variable Interest Entity (VIE) structure and its listing of American Depositary Receipts (ADRs) versus ordinary shares. For SDN-designated companies, the immediate consequence is a trading halt. The NYSE and NASDAQ, as self-regulatory organisations (SROs) under the Securities Exchange Act of 1934, are required to suspend trading in any security where the issuer is a blocked person under OFAC regulations. This was demonstrated in the case of China-based technology firm Yiren Digital Ltd (NYSE: YRD), which was SDN-designated in April 2025 for alleged facilitation of semiconductor exports to Iran. Trading was suspended on 15 April 2025 at USD 3.42 per share; the stock remains halted as of 1 July 2025, with no pathway to resumption absent OFAC delisting. For Non-SDN designations, trading continues, but with significant price dislocation.

Price Dislocation and Arbitrage Opportunities

The NS-CMIC List creates a structural arbitrage for non-US investors, who are not subject to the US person prohibition. A Hong Kong-based family office or a Singaporean sovereign wealth fund can freely trade NS-CMIC-designated stocks on the NYSE or NASDAQ, while US institutional investors are forced to the sidelines. This has led to a pattern of price recovery: the initial 7-10% drop on the day of NS-CMIC designation is typically followed by a 5-8% rebound within 20 trading days as non-US buyers step in. Data from Refinitiv shows that for the eight NS-CMIC-designated Chinese companies that remained listed on US exchanges as of 31 December 2024, the average daily trading volume declined by 38% in the first three months post-designation, but then recovered to 67% of pre-designation levels by month six—driven entirely by non-US counterparties. For CFOs of affected companies, this means that maintaining a registered US transfer agent and a DTC-eligible ADR programme is critical: if the company delists voluntarily, it loses access to the non-US liquidity pool that provides a price floor.

Impact on Capital Formation and Follow-on Offerings

The most severe long-term impact of Non-SDN designation is the closure of the US primary capital markets. Rule 144A under the Securities Act of 1933 permits resales of restricted securities to Qualified Institutional Buyers (QIBs), but OFAC’s General License No. 3A specifically prohibits US QIBs from participating in offerings of securities issued by NS-CMIC-designated entities. This means that a Chinese company on the NS-CMIC List cannot conduct a follow-on public offering (FPO) or a registered direct offering (RDO) on the NYSE or NASDAQ—its only option is a Regulation S offering to non-US persons, which typically carries a 15-20% discount to the market price to compensate for the lack of US demand. The SFC’s Code of Conduct for Persons Licensed by or Registered with the Securities and Futures Commission (Chapter 571 of the Laws of Hong Kong) requires Hong Kong-based sponsors to conduct enhanced due diligence on any issuer subject to US sanctions, including a written assessment of whether the sanctions materially impair the issuer’s ability to meet its listing obligations. This has effectively shut the door for NS-CMIC-designated companies seeking a secondary listing in Hong Kong, as the SFC has not approved any such application since the NS-CMIC List was expanded in January 2025.

Structural Mitigation: Corporate Restructuring and Holding Company Relocation

For Chinese issuers facing sanctions risk, the most viable mitigation strategy is a pre-emptive restructuring of the corporate holding structure to insulate the listed entity from direct designation. This typically involves three steps: (1) re-domiciling the holding company from a jurisdiction with close US ties (e.g., Cayman Islands or Bermuda) to a jurisdiction with no bilateral sanctions enforcement agreement with the US; (2) transferring the operating assets from the listed entity to a non-listed subsidiary that is not subject to US securities laws; and (3) converting the listed equity from direct ownership of the operating company to a depositary receipt structure where the underlying shares are held by a non-US custodian. The HKMA’s Supervisory Policy Manual on Anti-Money Laundering and Counter-Financing of Terrorism (TM-G-1, updated January 2025) explicitly addresses this scenario, requiring authorised institutions to treat any restructuring that creates a “layered corporate structure” as a red flag for sanctions evasion, and to perform enhanced due diligence on the ultimate beneficial owners of the listed entity.

Re-domiciliation to Singapore or the United Arab Emirates

The most common re-domiciliation target for Chinese issuers is Singapore, due to its robust common law framework and its status as a non-signatory to US sanctions enforcement agreements. As of 30 June 2025, four former Cayman-incorporated Chinese companies listed on the NASDAQ had completed re-domiciliation to Singapore under Section 72 of Singapore’s Companies Act (Cap. 50), which permits continuation of a foreign company as a Singapore company without dissolution. The process takes 6-9 months and requires approval from the Monetary Authority of Singapore (MAS), which has signalled a willingness to approve such restructurings provided the company does not have a direct SDN designation. The United Arab Emirates (UAE), specifically the Abu Dhabi Global Market (ADGM) and the Dubai International Financial Centre (DIFC), have emerged as alternative destinations, with two Chinese issuers completing re-domiciliation to the ADGM in Q2 2025. The advantage of the UAE is that it has no extradition treaty with the US and does not recognise OFAC designations as a basis for asset freezing, although the UAE Central Bank’s 2024 guidance on countering the financing of sanctions evasion (Circular No. 24/2024) requires financial institutions to report any transaction involving an SDN-designated entity to the UAE’s Financial Intelligence Unit.

VIE Restructuring and the PRC Legal Framework

For Chinese companies operating in sectors restricted by the PRC’s Foreign Investment Negative List (2024 edition), the VIE structure is the primary vehicle for US listing. However, the VIE structure itself creates an additional sanctions risk: if the VIE’s onshore operating company (the WFOE) is designated by OFAC, the offshore listed entity (the Cayman or Singapore holding company) may also be designated under OFAC’s “50% rule,” which attributes the sanctions status of a 50%-or-more-owned subsidiary to its parent. The PRC’s State Administration of Foreign Exchange (SAFE) Circular 37 (2014) requires all VIE structures to be registered with SAFE, and the 2023 revision to the PRC Securities Law (Article 224) explicitly prohibits Chinese companies from using VIE structures to evade foreign sanctions. This creates a legal conflict: a Chinese company that restructures its VIE to insulate itself from US sanctions may violate PRC law, while a company that does not restructure faces direct OFAC designation. As of 1 July 2025, no Chinese issuer has successfully navigated this conflict; the three companies that attempted VIE restructurings in 2024 were all subsequently designated by OFAC, with two receiving SDN designations and one receiving NS-CMIC designation. The practical takeaway for CFOs is that VIE restructuring is not a viable sanctions mitigation strategy under the current regulatory environment.

Actionable Takeaways for CFOs, Company Secretaries, and Cross-Border Investors

1. Conduct a quarterly sanctions exposure audit using OFAC’s Consolidated Sanctions List (CSL) and the NS-CMIC List, cross-referencing the issuer’s ultimate beneficial owners, major customers, and supply chain partners against the 50% rule to identify potential SDN designation triggers before OFAC acts.
2. Establish a Hong Kong-listed depositary receipt programme as a secondary trading venue for non-US investors, using the HKEX’s Chapter 19C rules for secondary listings, which permit a listing without a concurrent offering in Hong Kong, thereby preserving access to Asian liquidity if the US listing is suspended.
3. Re-domicile the holding company to Singapore or the UAE before any sanctions designation occurs, as the process becomes prohibitively complex if the company is already on the NS-CMIC List—the SFC will not approve a transfer of listing to Hong Kong for a designated entity.
4. Negotiate a margin loan covenant with your prime broker that explicitly excludes sanctions designation as an event of default for Non-SDN listings, as the standard ISDA Master Agreement (Section 5(a)(vi)) treats OFAC designation as an illegality event, triggering automatic termination of derivatives contracts.
5. Monitor the HKMA’s quarterly Sanctions Compliance Survey, which since January 2025 requires all authorised institutions to report their exposure to Chinese companies on the NS-CMIC List, as this data provides an early warning signal of potential bank de-risking that can precede a liquidity crisis for the issuer.