This chapter explores how Environmental, Social, and Governance (ESG) considerations—once viewed as peripheral to financial decision-making—have emerged as critical determinants of a firm's access to capital and its cost of financing. We begin by revisiting traditional theories of capital structure, which emphasize firm-specific fundamentals, macroeconomic conditions, information asymmetry, and legal institutions as key drivers of capital costs. Building on this foundation, we examine how ESG factors have become financially material, influencing perceived firm risk, investor trust, and disclosure quality. The integration of ESG into investment mandates, credit assessments, and pricing models reflects a broader shift in capital markets toward sustainability-informed finance. Strong ESG performance can reduce downside risks, enhance transparency, and signal long-term strategic resilience—thereby lowering equity risk premia and bond yield spreads.To investigate this emerging dynamic in a setting characterized by heightened information asymmetry, we turn to the Rule 144A private placement market. Under Rule 144A, firms may issue debt securities to Qualified Institutional Buyers (QIBs) without undergoing full SEC registration, allowing for quicker access to capital but with reduced disclosure obligations. This context provides a unique lens through which to examine whether corporate social responsibility (CSR)—a key component of ESG—can serve as a substitute signal for formal disclosure and reduce financing frictions. The empirical study featured in this chapter analyzes corporate bond issuances under Rule 144A to assess the relationship between issuers’ CSR profiles and the yield spread at issuance. We find that CSR concerns—reflecting environmental, social, and stakeholder-related controversies—are associated with significantly higher yield spreads, indicating that institutional investors demand compensation for heightened non-financial risks. In contrast, CSR strengths, such as positive sustainability initiatives, do not significantly affect pricing. These findings are robust to instrumental variable techniques and simultaneous equation estimation designed to address potential endogeneity. Further time-series analyses show that increases in CSR concerns—particularly those related to stakeholder conflict and reputational exposure—are met with higher borrowing costs. These results highlight the role of institutional investors in incorporating ESG-related downside risks into pricing, even in private debt markets with limited regulatory disclosure. Taken together, the chapter contributes to the literature on ESG and capital markets by demonstrating that CSR performance—particularly the absence of social and environmental controversies—can materially influence the cost of private debt. It underscores the financial relevance of ESG risk exposure and suggests that, in opaque capital-raising environments, negative ESG signals are more salient than positive ones in shaping investor behavior.

ESG, Cost of Capital, and Access to Financing

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发表日期：

2026年

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Jianrong Wang

摘要

This chapter explores how Environmental, Social, and Governance (ESG) considerations—once viewed as peripheral to financial decision-making—have emerged as critical determinants of a firm's access to capital and its cost of financing. We begin by revisiting traditional theories of capital structure, which emphasize firm-specific fundamentals, macroeconomic conditions, information asymmetry, and legal institutions as key drivers of capital costs. Building on this foundation, we examine how ESG factors have become financially material, influencing perceived firm risk, investor trust, and disclosure quality. The integration of ESG into investment mandates, credit assessments, and pricing models reflects a broader shift in capital markets toward sustainability-informed finance. Strong ESG performance can reduce downside risks, enhance transparency, and signal long-term strategic resilience—thereby lowering equity risk premia and bond yield spreads.To investigate this emerging dynamic in a setting characterized by heightened information asymmetry, we turn to the Rule 144A private placement market. Under Rule 144A, firms may issue debt securities to Qualified Institutional Buyers (QIBs) without undergoing full SEC registration, allowing for quicker access to capital but with reduced disclosure obligations. This context provides a unique lens through which to examine whether corporate social responsibility (CSR)—a key component of ESG—can serve as a substitute signal for formal disclosure and reduce financing frictions. The empirical study featured in this chapter analyzes corporate bond issuances under Rule 144A to assess the relationship between issuers’ CSR profiles and the yield spread at issuance. We find that CSR concerns—reflecting environmental, social, and stakeholder-related controversies—are associated with significantly higher yield spreads, indicating that institutional investors demand compensation for heightened non-financial risks. In contrast, CSR strengths, such as positive sustainability initiatives, do not significantly affect pricing. These findings are robust to instrumental variable techniques and simultaneous equation estimation designed to address potential endogeneity. Further time-series analyses show that increases in CSR concerns—particularly those related to stakeholder conflict and reputational exposure—are met with higher borrowing costs. These results highlight the role of institutional investors in incorporating ESG-related downside risks into pricing, even in private debt markets with limited regulatory disclosure. Taken together, the chapter contributes to the literature on ESG and capital markets by demonstrating that CSR performance—particularly the absence of social and environmental controversies—can materially influence the cost of private debt. It underscores the financial relevance of ESG risk exposure and suggests that, in opaque capital-raising environments, negative ESG signals are more salient than positive ones in shaping investor behavior.