What Malk Partners does

Malk Partners is a New York-based ESG and impact investing advisory firm founded in 2009 that serves private market investors and their portfolio companies. The firm delivers a six-part service suite — ESG Diligence, Portfolio Stewardship, Fund Advisory, Impact, ESG Data, and ESG Value Creation — covering the full investment lifecycle from pre-investment due diligence through portfolio monitoring and exit. Its client base spans dozens of leading alternative asset managers across private equity, growth equity, venture capital, private credit, real estate, and infrastructure, with the team conducting hundreds of ESG due diligence reviews per year on transactions typically ranging from $25 million to $2 billion in enterprise value.

The firm generates revenue exclusively through professional service fees on customized advisory engagements, with no software products, APIs, or technology platform disclosed. Services are delivered through a relationship-based, sales-led go-to-market model leveraging direct outreach, referrals, industry conferences, and thought leadership content (including an annual State of ESG Report and frequent sector-specific white papers). Malk has been a signatory of the United Nations-supported Principles for Responsible Investment since 2012 and became part of SLR Consulting in 2022, extending its global environmental and advisory capabilities while retaining its independent brand and leadership.

Malk's competitive positioning rests on its singular focus on private market ESG (founded 2009), its experiential depth from high transaction throughput, and its ability to integrate "right-sized" ESG processes into client investment workflows. The firm is led by CEO Max Hong (appointed May 2022) with founder Andrew Malk in a strategic leadership role, and operates a tiered delivery team of Partners, Principals, Vice Presidents, Senior Associates, and Associates. Malk combines ESG subject-matter expertise with regulatory navigation across emerging regimes including California's SB 253/261 and the EU's SFDR.

Name

Malk Partners

Legal name

Malk Sustainability Partners

Website

https://malk.com

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

51–100 employees

Short description

Malk Partners is a New York-based ESG and impact investing advisory firm founded in 2009 that serves dozens of leading alternative asset managers across private equity, venture capital, credit, real estate, and infrastructure with due diligence, portfolio monitoring, and fund-level advisory services.

Ownership category

akta.pro rank

Product category

ESG Advisory Services

NAICS

Portfolio Management and Investment Advice (523940)

SIC

Services-Management Consulting Services (8742)

akta.pro primary industry

Sustainability & ESG Consulting (BPAHACAK)

akta.pro secondary industries

ESG/Sustainable Investment Advisory (FSAEAAAJ), ESG & Sustainability Research (FSACAGAH)

Keywords

• ESG advisory services
• ESG due diligence
• Impact investing advisory
• Portfolio stewardship services
• Private equity ESG consulting

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Revenue model

1. ESG Advisory and Consulting Services: Malk Partners generates revenue through providing bespoke ESG and impact investing advisory services to private market investors and their portfolio companies. Services include ESG due diligence, portfolio stewardship, fund advisory, impact advisory, ESG data services, and ESG value creation. Revenue is derived from professional service fees for advisory engagements with asset managers.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Malk Partners is a boutique advisory firm that provides bespoke ESG and impact investing advisory services to private market investors and their portfolio companies. Its core offerings include pre-investment ESG due diligence, ongoing portfolio stewardship, fund-level advisory, impact investing strategy, ESG data services, and ESG value creation advisory. The firm advises dozens of leading alternative asset managers across private equity, growth equity, venture capital, credit, real estate, and infrastructure, conducting ESG due diligence on hundreds of transactions per year.

Product overview

Malk Partners offers a unified suite of ESG and impact investing advisory services for private market investors. The core service portfolio consists of six integrated offerings: ESG Diligence (pre-investment due diligence), Portfolio Stewardship (ongoing monitoring and support), Fund Advisory (strategic alignment and program development), Impact (impact thesis development and measurement), ESG Data (data collection and reporting), and ESG Value Creation (opportunity capitalization and strategy integration). These services are delivered as consulting engagements rather than software products, supporting clients across private equity, growth equity, venture capital, credit, real estate, and infrastructure throughout the fund and investment cycle. The firm also publishes annual State of ESG Reports as part of its thought leadership and client value proposition.

Differentiator

Problem solved

Functional benefit

Products and services

• ESG Diligence Pre-investment ESG due diligence review for private market investors that assesses environmental, social, and governance factors and establishes a baseline from which material ESG issues are mitigated and monitored throughout the investment lifecycle.
• Portfolio Stewardship
• Fund Advisory
• Impact
• ESG Data
• ESG Value Creation
• State of ESG Report Annual comprehensive research report capturing how ESG practices are evolving across private equity, private credit, venture capital, real estate, and infrastructure; positioned as thought leadership content for the firm's private market investor audience.

Quantifiable outcome

• Malk conducts ESG and impact due diligence reviews on hundreds of transactions per year, typically ranging from $25 million to $2 billion in enterprise value.
• +1 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Five partnerships are on record, tiered core and minor.

• Benefit Street Partners (BSP)coreStrategic or Co-development Partner · 16 September 2021Benefit Street Partners, a leading credit-focused alternative asset manager and wholly owned subsidiary of Franklin Resources, Inc. (operating as Franklin Templeton), partnered with Malk to co-author a white paper titled 'ESG Integration in Private Credit.' The paper provides a practitioner's guide to integrating ESG into private credit underwriting and monitoring. BSP uses Malk as an independent ESG specialist to diligence opportunities alongside their investment team.
• Environmental Defense Fund (EDF)minorStrategic or Co-development Partner · 1 January 2012Malk Partners collaborated with the Environmental Defense Fund on a study released in 2012 titled 'ESG in Private Equity,' which showed that the private equity industry was expanding ESG expertise, capacity, and commitment. This collaboration established Malk's credentials as a research-driven ESG advisor.
• United Nations-supported Principles for Responsible Investment (PRI)coreStrategic or Co-development Partner · 1 January 2012Malk Partners is a proud signatory of the UN PRI, having joined in 2012. The firm is committed to upholding the PRI's Six Principles and supporting clients in upholding the same principles. PRI alignment is central to Malk's service offerings for private market investors.
• SLR ConsultingcoreStrategic or Co-development Partner · 1 January 2009Malk Partners is a part of SLR Consulting, a global leader in environmental and advisory services. This partnership expands Malk's expertise and impact across industries, providing global reach and a broader suite of environmental and advisory capabilities to Malk's client base of private market investors.
• California Air Resources Board (CARB)minorOthersCARB oversees enforcement of California's SB 253 (Climate Corporate Data Accountability Act). Malk advises clients on preparing for SB 253 compliance, interpreting CARB's developing regulations, and submitting emissions disclosures in alignment with CARB requirements. Malk's expertise helps portfolio companies navigate CARB's enforcement framework including the August 2026 deadline.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Deloitte: Deloitte's Sustainability Services practice includes dedicated PE-focused ESG advisory, climate risk, and reporting offerings. It competes for the same GP ESG budgets with a much wider consulting portfolio.
• EY: EY's Climate Change and Sustainability Services practice serves PE and asset managers with ESG diligence, non-financial assurance, and impact advisory. It is a broader incumbent competitor for ESG advisory budgets.
• Bain & Company: Bain's Private Equity and Sustainability & Responsibility practices serve PE GPs and their portfolios on ESG diligence, value creation, and impact strategy. It is a broader incumbent that competes for ESG advisory budgets through bundling with consulting engagements.
• KPMG: KPMG's ESG Advisory practice includes dedicated services for private equity clients on ESG diligence, climate reporting, and regulatory readiness (SFDR, CSRD). It is a broader incumbent competitor.
• PwC: PwC's Sustainability and Climate Change practice serves private market investors with ESG diligence, reporting, and assurance work. It competes with Malk for institutional ESG mandates at scale.
• BCG (Boston Consulting Group): BCG's Climate & Sustainability Practice advises PE and asset managers on ESG strategy, value creation, and climate transition. It competes with Malk for senior-level ESG strategy engagements at large GPs.

Emerging players

• Anthesis Group: Anthesis is a sustainability advisory and data firm serving corporates and investors on ESG strategy, climate, and reporting. It is a peer in adjacent advisory but with broader corporate focus and less PE-specific specialization than Malk.
• S&P Global Sustainable1: S&P Global Sustainable1 provides ESG data, ratings, and research increasingly used by PE and credit investors for diligence and monitoring. It overlaps with Malk's ESG Data service line and represents both a complementary data source and a potential workflow substitute.

Direct peers

• KKS Advisors: KKS Advisors is a boutique sustainability and ESG advisory firm serving private equity sponsors and their portfolio companies. It is the closest comparable to Malk in scale, niche, and service offering.
• ERM (Environmental Resources Management): ERM's Investor Services and Corporate Value Stewardship practices provide environmental and ESG diligence and advisory to private equity clients globally. It competes with Malk on cross-border PE ESG mandates with a much larger delivery footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/malk-sustainability-partners-llc

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Malk Partners