William Hendrik & Siregar Djojonegoro

What William Hendrik & Siregar Djojonegoro does

WH&SD Law Group is an Indonesian full-service corporate law firm headquartered at Prosperity Tower in Jakarta's Sudirman Central Business District, formed in May 2022 through the merger of capital-markets boutique William & Hendrik (originally established 2016 as William Hendrik Esther) and banking-and-infrastructure boutique Siregar & Djojonegoro (established 2013). The merged entity operates with 40+ fee earners led by four Senior Partners — Managing Partner Zippora Siregar, William Palijama, Hendrik Silalahi, and Cindy Djojonegoro — plus three Partners (Rudy Kusmanto, Stefy Yully Nataly, Kanya Hasibuan) and a Senior Of Counsel (Rofik Sungkar). The firm is entirely partner-owned with no disclosed institutional investors or parent company. Its value proposition rests on partner pedigrees that include former General Counsels of Indonesian conglomerates, publicly listed property companies, multinational insurers, and fintechs, with multiple partners registered as capital market lawyers with OJK.

The firm delivers legal advisory across ten core practice areas — Banking and Finance, Capital Market and Securities, Corporate Secretarial Services, Dispute Resolution and Restructuring, Employment, Infrastructure, Investment, Mergers and Acquisitions, Tax, and Technology/Venture Capital/Startups — serving clients across 15 industry verticals including Aviation, Financial Institutions, Fintech, Healthcare, Hospitality, Insurance, Maritime, Mining, Oil and Gas, Plantation, Project Energy, Real Estate, Retail, and Telecommunication. WH&SD was ranked #1 in Indonesia for highest number of IPO transactions in 2020 by Hukumonline and has accumulated 30+ recognitions from Asian Legal Business, IFLR1000, Legal 500, Asialaw, and Asia Business Law Journal. There is no proprietary technology platform; the firm's offering is people-intensive expertise applied to complex corporate, capital markets, M&A, banking, infrastructure (including PPP), and dispute resolution mandates for an enterprise client base reported at 200+.

The business operates on a traditional professional services revenue model combining hourly fees, fixed transaction fees, and success-based fees tied to capital markets mandates such as IPOs. Go-to-market is partner-led enterprise sales targeting Indonesian corporates requiring complex transactional and regulatory work, with demand generation driven primarily by industry rankings, partner-authored articles in outlets such as Hukumonline, IPO-procedure webinars, and reputational referrals. The firm has signaled sector diversification into technology, venture capital, and digital economy mandates alongside legacy strengths in financial services, healthcare, and infrastructure.

Name

William Hendrik & Siregar Djojonegoro

Legal name

William Hendrik & Siregar Djojonegoro

Website

https://whsdlaw.com

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

11–50 employees

Short description

WH&SD Law Group is a Jakarta-based Indonesian full-service corporate law firm formed in 2022 via the merger of William & Hendrik and Siregar & Djojonegoro, delivering capital markets, M&A, banking and finance, infrastructure, and ten additional practice areas to 200+ enterprise clients across 15 industry verticals.

Ownership category

akta.pro rank

Product category

Corporate Legal Services

NAICS

Offices of Lawyers (541110), Legal Services (5411)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Mergers & Acquisitions (M&A) & Securities Law (BPAHAAAI)

akta.pro secondary industries

Corporate Development & Strategic Partnerships Advisory (JVs, Alliances, Carve-outs) (BPAHAOAG), Strategic Partnerships, Alliances & JVs Advisory (BPAHADAI)

Keywords

• Corporate legal advisory
• Capital markets law
• Mergers and acquisitions
• Banking and finance law
• Infrastructure project law

Headquarters

HQ city

Jakarta

HQ country

Indonesia

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Legal Advisory Services: Professional legal services billed primarily through hourly fees, fixed fees for specific transactions, and success-based fees for capital markets transactions such as IPOs

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

William Hendrik & Siregar Djojonegoro (WH&SD) is a full-service Indonesian law firm that provides legal advisory services across ten core practice areas including Banking and Finance, Capital Markets and Securities, Corporate Secretarial Services, Dispute Resolution and Restructuring, Employment, Infrastructure, Investment, Mergers and Acquisitions, Tax, and Technology/Venture Capital/Startups. The firm serves corporate clients with both domestic and cross-border transactions including IPOs, M&A, infrastructure and PPP projects, and regulatory compliance across 15 industry verticals.

Product overview

WH&SD Law Group is a full-service Indonesian law firm formed by the merger of William & Hendrik and Siregar & Djojonegoro in 2022. The firm offers a comprehensive suite of legal services across ten core practice areas: Banking and Finance, Capital Market and Securities, Corporate Secretarial Services, Dispute Resolution and Restructuring, Employment, Infrastructure, Investment, Mergers and Acquisitions, Tax, and Technology/Venture Capital/Startups. Additionally, the firm provides specialized legal advisory across 15 industry sectors including Aviation, Financial Institutions, Fintech, Healthcare, Hospitality and Leisure, Insurance, Maritime, Mining, Oil and Gas, Plantation and Agribusiness, Project Energy, Real Estate/Property, Retail and Consumer, and Telecommunication. The combined proficiencies enable the firm to assemble teams matching client requirements from contract drafting to complex multi-national project legal frameworks.

Differentiator

Problem solved

Functional benefit

Products and services

• Banking and Finance

Quantifiable outcome

• Ranked #1 in Indonesia for highest number of IPO transactions in 2020
• +1 more outcomes

Segments5 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Hadiputranto Hadinoto & Partners (Baker McKenzie member): Indonesian member firm of Baker McKenzie, providing cross-border M&A, capital markets, and project finance work with global integration. Represents the international-incumbent competitive threat to WH&SD's domestic mandate flow.
• EY Law (Ernst & Young Indonesia): Big Four legal practice in Indonesia providing corporate, M&A, and tax legal advisory. Represents the broader professional-services firm competition for cross-border and transactional mandates alongside traditional law firms.

Direct peers

• Assegaf Hamzah & Partners: One of Indonesia's largest independent full-service law firms, ranked top-tier by IFLR1000, Legal 500, and Chambers for capital markets, M&A, and banking & finance. Directly competes for IPO, M&A, and banking mandates in the same Indonesian enterprise segment.
• Makarim & Taira S. Premier Indonesian law firm consistently ranked top-tier for corporate, M&A, and capital markets work. Notable for technology and startup advisory, overlapping with WH&SD's tech/VC practice area.
• SSEK Law Firm (Syarif Siregar & Reksodiputro): Established Indonesian full-service law firm with strong banking & finance, capital markets, and M&A practices. Competes with WH&SD for financial services and corporate transactional work in Indonesia.
• Hiswara Bunjamin & Tandjung: Indonesian law firm formed through merger with strong M&A, capital markets, and corporate practices. Direct peer given similar boutique-to-mid-tier positioning and recent merger history analogous to WH&SD.
• HHP Law Firm (Hutabarat Halim & Reksodiputro): Top-tier Indonesian full-service law firm with strong capital markets, M&A, and corporate practices, regularly ranked alongside Assegaf Hamzah. Competes head-to-head with WH&SD for high-value Indonesian IPO and M&A mandates.
• ABNR (Ali Budiardjo Nugroho Reksodiputro): Long-established Indonesian full-service law firm with leading M&A, capital markets, and corporate practices. Competes directly with WH&SD for enterprise-level transactional mandates in Indonesia.
• Ginting & Reksodiputro: Indonesian law firm with M&A, capital markets, and corporate focus. Mid-sized competitor overlapping with WH&SD on Indonesian transactional mandates.
• Soemadipradja & Taher: Long-standing Indonesian law firm with established banking & finance, M&A, and capital markets practices. Direct competitor in Indonesia's mid-to-upper-tier corporate transactional segment.

Market position

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/whsdlaw

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 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 William Hendrik & Siregar Djojonegoro