Diodes Incorporated (DIOD) — ESG & Values Scores

Environment story

Diodes Incorporated demonstrates moderate environmental performance with notable gaps in disclosure and credibility. The company acknowledges subject-matter jurisdiction over hazardous-chemical handling at wafer fabs in China, Taiwan, UK, and US assembly/test sites in China, Taiwan, and Germany, but provides no quantified Scope 1, 2, or 3 emissions data, no renewable electricity percentage, and no net-zero target year. Environmental capital expenditures are stated as 'not material' for the three-year period 2023–2025. No evidence of greenwashing interventions (carbon-offset reliance, supply-chain emissions masking, or shareholder litigation blocking) is documented in the 10-K. The absence of mandatory climate disclosures and forward targets materially constrains the score.

Criticisms on file

No disclosed Scope 1, 2, or 3 emissions; no net-zero target year; no renewable electricity percentage disclosed; environmental capex reported as immaterial.
Source: DIOD 10-K FY2025, Item 1 Business and Item 1A Risk Factors (Environmental Matters section)

Disclosed initiatives

Environmental Compliance & Certifications

Manufacturing facilities certified ISO 9001:2015, ISO 14001:2015, IATF 16949:2016, and C-TPAT certified. Company states compliance with federal, state, and local safety requirements across all jurisdictions.

Demonstrates commitment to structured environmental management systems but lacks quantitative emissions reduction targets or progress metrics.
Hazardous Materials Management

Company acknowledges use of toxic, volatile, and hazardous chemicals in manufacturing processes and states regulatory compliance across US federal, state, and local laws, as well as foreign regulations.

Procedural safeguard in place; however, no disclosure of waste reduction, water consumption limits, or remediation activities.

Social story

Diodes Incorporated demonstrates moderate social performance anchored in workforce stability and non-unionized labor relations, but lacks transparent diversity metrics and supply-chain human-rights audits. As of December 31, 2025, the company employs 7,989 people globally: 6,753 in Asia, 790 in Europe, and 446 in Americas. None of the Asia or US workforces are unionized; European employees are covered by individual employment agreements with some collective bargaining in place. The company reports 'satisfactory' employee relations but discloses no CEO-to-median-worker pay ratio, no gender/racial diversity percentages in leadership or workforce, no third-party pay-equity audits, and no supply-chain human-rights due diligence regarding conflict minerals or cobalt sourcing. Lack of diversity metrics and supply-chain transparency materially limits the social score.

Criticisms on file

No disclosed CEO-to-median-worker pay ratio, gender diversity percentage, racial diversity percentage, pay-equity audits, or supply-chain human-rights assessments (conflict minerals, cobalt, lithium sourcing).
Source: DIOD 10-K FY2025, Item 1 Business – Human Capital Management section and Item 11 Executive Compensation (incorporated by reference to proxy statement not yet filed)

Disclosed initiatives

Human Capital Management Framework

Company emphasizes recruitment, retention, training, development, workplace safety, employee health & wellness, engagement, and diversity & inclusion as core pillars. Provides skill-advancement and skill-expansion training; encourages open-door policy and two-way communication via all-hands CEO meetings and manager feedback.

Procedural framework established; however, no quantified outcomes (retention rate, training hours, safety incident frequency) disclosed.
Workplace Safety & Health Policy

Company commits to safe workplace for all employees worldwide; applies safety policy to suppliers, vendors, and service providers; requires compliance with applicable federal, state, and local safety regulations.

Policy in place; no quantified safety incident data, near-miss rates, or injury trends disclosed.
Diversity & Inclusion Commitment

Company states respect for individuals, welcomes diversity, embraces different perspectives, and commits to safe and respectful work environment. No measurable targets or disclosed diversity percentages.

Statement of principle only; no quantified diversity metrics, leadership pipeline data, or measurable inclusion outcomes.

Governance story

Diodes Incorporated demonstrates moderately sound governance with single-class common stock, no disclosed board independence percentage, and undisclosed lobbying expenditures. The company is a large accelerated filer with a Delaware incorporation and is subject to Section 404(b) Sarbanes-Oxley attestation, indicating robust internal control frameworks. Board and governance details are incorporated by reference to the proxy statement (to be filed within 120 days of fiscal year-end December 31, 2025) and are not yet available in the 10-K. No evidence of active antitrust proceedings, consumer-safety litigation, or financial-fraud regulatory actions is disclosed in the Risk Factors section. The company does not disclose lobbying expenditure amounts, political PAC contributions, or participation in trade associations that may misalign with climate or consumer-protection regulation. Lack of transparency on board independence, lobbying spend, and director composition limits the governance score.

Criticisms on file

Board independence percentage not disclosed in 10-K; board composition, director independence, and committee details incorporated by reference to proxy statement not yet filed.
Source: DIOD 10-K FY2025, Item 10-14 (PART III – incorporated by reference to proxy statement filed within 120 days of December 31, 2025)
No disclosure of annual lobbying expenditures, political PAC contributions, or trade association memberships that may target environmental deregulation or consumer-protection rollbacks.
Source: DIOD 10-K FY2025 – comprehensive review of Risk Factors, MD&A, and governance disclosures; no lobbying or political contribution amounts stated

Disclosed initiatives

Sarbanes-Oxley Compliance & Internal Controls

Company is a large accelerated filer and has filed attestation to management's assessment of internal control effectiveness under Section 404(b) of Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by registered public accounting firm.

Demonstrates robust internal control framework and financial reporting integrity.
Corporate Governance Disclosure

Website provides access to corporate governance guidelines, Code of Business Conduct, and whistleblower hotline. Board composition, director independence, and compensation details are incorporated by reference to proxy statement.

Procedural governance infrastructure in place; board independence, committee composition, and director diversity metrics to be disclosed in proxy statement (filed within 120 days of fiscal year-end).
Related Party Transaction Review

Audit Committee reviews all related party transactions (Keylink, Nuvoton, JCP, Atlas, ATX) for potential conflict of interest on ongoing basis. Company states all related party transactions are on terms no less favorable than unaffiliated third parties.

Oversight mechanism in place; materiality and fairness of related-party dealings reviewed by independent audit committee.

These are Missionomics' own editorial scores — directional signals built from disclosed facts under a published method, not certifications or definitive ratings of Diodes Incorporated. Coverage and confidence vary by data point, and figures can lag real-world changes. Read the full Methodology for sourcing, scoring, and correction details — or open Diodes Incorporated in the app for interactive charts and portfolio building.

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