Siam Premier

What Siam Premier does

Siam Premier International Law Office Limited is a Bangkok-headquartered, full-service Thai law firm established in August 1990 and operating as a private limited company with 51-100 employees. The firm delivers legal services across 13 practice areas — including Corporate/M&A, Banking and Finance, Capital Markets, Litigation and Dispute Resolution, Data Privacy, Digital Assets, Foreign Direct Investment, Taxation, Restructuring and Insolvency, Antitrust and Competition, Employment and Labour, Commercial, and Public Private Partnerships — and 10 sector specializations covering Automotive, Aviation, Food and Beverage, Healthcare and Pharmaceuticals, Insurance, Mining and Natural Resources, Projects and Energy, Real Property and Construction, Shipping and Logistics, and Technology, Media and Telecommunications. Disclosed mandates include a THB 26.3 billion petrochemical restructuring, a THB 17.5 billion life insurance share acquisition, a USD 5.4 billion cross-border animal health divestiture, a THB 6.6 billion real estate loan facility, and multi-jurisdictional antitrust work for a Thai national airline, indicating capacity for top-tier, complex transactions.

The firm's customer base comprises two principal segments: Thai domestic corporations (including SET-listed companies) requiring counsel on domestic transactions, regulatory compliance, and corporate governance, and foreign corporations investing in Thailand — notably Japanese, European, American, and Asian multinationals — seeking advisory on FDI, market entry, joint ventures, foreign business licensing, and BOI applications. Revenue is generated through professional services fees billed via billable hours, fixed fees, and transaction-based arrangements, with distribution conducted directly through enterprise engagement rather than intermediaries or digital channels. The firm maintains a regional affiliate in Lao PDR (Lao Premier International Law Office Limited) and two group subsidiaries (SPI Legal Consulting Co., Ltd. and Siam Premier Service Co., Ltd.). Underlying technology is described as standard law firm infrastructure — website, document management, and communication platforms — with no proprietary technology, API, or disclosed AI/ML capability. Marketing relies on reputation, professional referrals, and content-based publications (71 legal and regulatory updates).

Name

Siam Premier

Legal name

Siam Premier International Law Office Limited

Website

https://siampremier.com

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

51–100 employees

Short description

Siam Premier International Law Office Limited is a Bangkok-based full-service Thai law firm established in 1990, serving Thai domestic corporations and foreign multinational investors across 13 practice areas including Corporate/M&A, Banking and Finance, Litigation, Data Privacy, and Digital Assets.

Ownership category

akta.pro rank

Product category

Legal Services

NAICS

Offices of Lawyers (54111)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Family & Private Client (Trusts & Estates) Law (BPAHAAAK)

Keywords

• Corporate legal services
• Mergers and acquisitions
• Cross-border transactions
• Litigation and dispute resolution
• Banking and finance law

Headquarters

HQ city

Bangkok

HQ country

Thailand

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 Services Fees: Professional legal services billed to corporate clients on matters including M&A, litigation, banking, capital markets, and regulatory advice. Revenue is generated through billable hours, fixed fees for specific services, and transaction-based fees for major deals.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Siam Premier is a full-service Bangkok-based law firm providing comprehensive legal advisory and representation across 13 practice areas (including Corporate/M&A, Banking and Finance, Capital Markets, Litigation, Data Privacy, Taxation, and Foreign Direct Investment) and 10 industry sectors. It serves Thai domestic corporations and foreign multinationals investing in Thailand with billable hours, fixed fees, and transaction-based billing.

Product overview

Siam Premier International Law Office Limited is a Bangkok-based full-service law firm established in 1990, offering comprehensive legal services through 13 distinct practice areas (Antitrust and Competition, Banking and Finance, Capital Markets, Commercial, Corporate/M&A, Data Privacy, Digital Assets, Employment and Labour, Foreign Direct Investment, Litigation and Dispute Resolution, Public Private Partnerships, Restructuring and Insolvency, and Taxation) and 10 sector specializations (Automotive, Aviation, Food and Beverage, Healthcare and Pharmaceuticals, Insurance, Mining and Natural Resources, Projects and Energy, Real Property and Construction, Shipping and Logistics, and Technology Media and Telecommunications). The firm operates as a single integrated legal services offering rather than a modular software platform.

Differentiator

Problem solved

Functional benefit

Products and services

• Antitrust and Competition Legal Services
• Banking and Finance Legal Services
• Capital Markets Legal Services
• Commercial Legal Services
• Corporate / Mergers and Acquisitions Legal Services
• Data Privacy Legal Services
• Digital Assets Legal Services
• Employment and Labour Legal Services
• Foreign Direct Investment Legal Services
• Litigation and Dispute Resolution Legal Services
• Public Private Partnerships Legal Services
• Restructuring and Insolvency Legal Services
• Taxation Legal Services

Named customers11 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered core and minor.

• SPI Legal Consulting Co., Ltd.coreOthersSubsidiary/affiliate company within the Siam Premier group providing legal consulting services
• Siam Premier Service Co., Ltd.coreOthersSubsidiary/affiliate company within the Siam Premier group providing support services
• Lao Premier International Law Office LimitedcoreOthersRegional affiliate in Lao PDR for cross-border legal services, mentioned in privacy notices as part of international data transfer arrangements for managing subsidiaries and affiliates
• Lao PremierminorOthersLinked subsidiary accessible via website navigation, providing legal services in Laos

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Linklaters (Bangkok): Magic Circle firm with a Bangkok presence handling major Thai M&A, capital markets, and project finance mandates in competition with Siam Premier on inbound regional work.
• Allen & Overy / A&O Shearman (Bangkok): Global elite firm with a Bangkok office focused on banking, capital markets, and cross-border M&A work, directly competing for Thai inbound mandates from multinational clients.
• Clifford Chance (Bangkok): Global elite firm with a Bangkok office focused on cross-border M&A, banking, and capital markets mandates; competes for large multi-jurisdictional matters involving Thai assets and inbound FDI.
• Baker McKenzie (Bangkok): Global elite firm with a long-established Bangkok office serving Thai and multinational clients across most of the same practice areas; competes for cross-border mandates routed through regional deal teams.
• DLA Piper (Bangkok): Global law firm with a substantial Bangkok practice serving multinational and Thai clients across corporate, finance, and regulatory mandates in overlapping categories with Siam Premier.

Direct peers

• Kudun & Partners: Bangkok-based Thai law firm with notable capital markets, banking, and corporate/M&A practices, frequently advising on Thai public M&A and securities work in direct competition with Siam Premier.
• Chandler MHM (formerly Chandler & Thong-ek): Long-established Bangkok corporate law firm with deep capital markets and banking & finance practices, serving Thai and multinational clients in overlapping practice areas including M&A, restructuring, and regulatory advisory.
• Weerawong, Chinnavat & Peangpanor: Bangkok-based independent Thai law firm with a leading M&A, capital markets, and banking practice and an overlapping Thai and international blue-chip client base, directly competing for high-end corporate mandates.
• Tilleke & Gibbins: Bangkok-headquartered full-service Thai law firm of comparable breadth and tenure, with a similarly strong foreign-corporation and FDI-into-Thailand client base, making it the closest domestic competitor for the same premium corporate mandate set.
• Formichella & Sritulai: Bangkok-based Thai law firm active in corporate, commercial, and dispute resolution matters for Thai and international clients, providing comparable service offerings in the same geography and over similar practice areas.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Siam Premier