What LSN Ré WALBAUM does

LSN Ré WALBAUM is a Paris-headquartered, ACPR-supervised reinsurance broker (SAS structure, ORIAS N° 07 000 586) providing treaty placement, facultative cover, PRAM capacity solutions, and bespoke product conception to insurance cedants, large enterprises, and mid-sized companies (ETI/PME/PMI) across France and Europe. The firm operates four core service lines: Traités (Treaties) for life and non-life (IARD) portfolios, Facultatives for risk-specific capacity, PRAM for profession-specific perpetuation/retirement/insurance needs, and Conception de produits for innovative insurance design. Underwriting and program-structuring work is supported by an in-house actuarial department and the Risk Explorer analytical tool provided by Ultirisk.

The company was formed in 2021 through the merger of LSN Réassurances (founded 1984 to address reinsurance capacity needs for notaries) with Groupe Walbaum IAR (acquired in 2020). In 2022, the entity became part of Groupe DIOT-SIACI — the leading independent European insurance brokerage created via the merger of DIOT-LSN and SIACI Saint Honoré — consolidating 22 sites across the group. Benoît BUTEL serves as President. The firm emphasizes independence, ethics, agility, and an entrepreneurial/family-owned culture as its positioning pillars.

LSN Ré WALBAUM generates revenue primarily through brokerage commissions on reinsurance placements (transaction-fee model), with bespoke, quote-based pricing tied to treaty complexity, risk profile, and coverage requirements, typically structured under multi-year contracts. Distribution is direct-to-cedant via enterprise field sales led by named specialists across IARD, Life, and Facultatives, supplemented by referral and cross-sell from the broader DIOT-SIACI network. Marketing is concentrated on a bilingual corporate site, the group's referral ecosystem, and a shared recruitment portal.

Name

LSN Ré WALBAUM

Legal name

LSN RÉ WALBAUM - Société de Conseil et de Courtage en Réassurance SAS

Website

https://lsnrewalbaum.com

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

1–10 employees

Short description

LSN Ré WALBAUM is a Paris-based, ACPR-regulated reinsurance broker offering treaty, facultative, PRAM, and product-conception services to insurance cedants, large enterprises, and mid-sized companies across France and Europe. It operates as the dedicated reinsurance arm of Groupe DIOT-SIACI.

Ownership category

akta.pro rank

Product category

Reinsurance Brokerage

NAICS

Agencies, Brokerages, and Other Insurance Related Activities (5242), Insurance Agencies and Brokerages (52421), Reinsurance Carriers (524130)

SIC

Insurance Agents, Brokers & Service (6411)

akta.pro primary industry

Treaty Reinsurance Brokerage (FSAOAHAA)

akta.pro secondary industry

Wholesale Insurance Brokerage (Excess & Surplus Lines) (FSAEADAD)

Keywords

• Reinsurance brokerage
• Treaty placement
• Facultative reinsurance
• Risk management advisory
• Insurance product design

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Reinsurance Brokerage Commissions: As a reinsurance broker and intermediary, LSN Ré WALBAUM earns commissions for placing reinsurance treaties and facultative covers on behalf of ceding insurance companies. Revenue is generated through brokerage fees on reinsurance placements for both life and non-life (IARD) portfolios.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

LSN Ré WALBAUM is an independent reinsurance broker and risk management advisor that places treaty and facultative reinsurance solutions with specialized reinsurers on behalf of ceding insurance companies and large enterprises. Its core offerings include Treaties (Traités), Facultatives, PRAM capacity solutions for specific professional perimeters, and Product Conception (Conception de produits) for designing innovative insurance solutions.

Product overview

LSN Ré WALBAUM is a reinsurance brokerage and risk management advisory firm offering a unified portfolio of four interconnected core service offerings: Traités (Treaties), Facultatives, PRAM, and Conception de produits (Product Conception). These services work together to provide comprehensive reinsurance solutions—from personalized treaty structures for life and non-life portfolios, to facultative policy placement for optimized coverage and capacity, to specific product conception for innovative insurance needs, all supported by actuarial analytics using Risk Explorer tools.

Differentiator

Problem solved

Functional benefit

Products and services

• Traités (Treaties) Personalized reinsurance treaty solutions covering both life and non-life (IARD) activities, including risk analysis, structure definition, negotiation with specialized reinsurers, and accounting and financial follow-up throughout the life of the treaty. Designed for large enterprises, ETI/PME/PMI, and insurance cedants.
• Facultatives Specific expertise in placement of facultative policies, enabling optimization of insurance costs by freeing additional capacity, developing specific guarantees, improving risk coverage per site, and optimizing captive reinsurance structures. Targeted at cedants and large employers seeking specific risk placement.
• PRAM (Perpétuation, Retraite, Assurance, Mémoire) Specific capacity solutions for professionals exercising within defined perimeters (originating from the firm's notary roots), offering coverage related to perpetuation, retirement, insurance, and memory needs.
• Conception de produits (Product Conception) Engineering service to identify and bring together the right players to design and propose insurance solutions dedicated to clearly identified targets and/or innovative purposes, including business plan establishment, pricing, policy drafting, underwriting guide design, and agreement preparation.

Quantifiable outcome

• Gives clients the best service, best solutions at the best price, and best advice

Named customers1 record

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Three partnerships are on record, tiered flagship and core.

• BURRUS GroupflagshipStrategic or Co-development Partner · 16 November 2022The BURRUS Group partnered with SIACI SAINT HONORE (which includes LSN) to create the leading independent European insurance brokerage and consulting firm. This merger brought together complementary strengths and created one of the largest independent brokers in Europe.
• DIOT-LSN and SIACI SAINT HONOREcoreStrategic or Co-development Partner · 7 July 2022The Groupe BURRUS and SIACI SAINT HONORE signed the project of creating a leading independent European insurance brokerage and consulting firm. On November 16, 2022, DIOT-LSN and SIACI SAINT HONORE finalized their merger to create this European leader.
• GROUPE WALBAUM IARcoreStrategic or Co-development Partner · 1 January 2021In 2021, LSN Réassurances merged with GROUPE WALBAUM IAR to form LSN RÉ WALBAUM. The merger combined expertise and client bases to create a stronger reinsurance brokerage entity. GROUPE WALBAUM IAR had been acquired by LSN in 2020.

Scale indicators5 records

Recent moves11 records

Expansion highlights5 records

Direct peers

• Willis Re (WTW): Willis Re, part of WTW, is one of the global "Big Four" reinsurance brokers and offers treaty, facultative, and analytics-led advisory. Comparable to LSN Ré WALBAUM in service mix and end-market (cedants), but with global panel reach and far larger headcount.
• BMS Group: BMS Group is an independent, employee-owned global insurance and reinsurance broker with strong facultative and treaty capabilities, often cited as a model for entrepreneurial independent reinsurance brokers. LSN Ré WALBAUM's positioning as a 100% independently-owned, entrepreneurial reinsurance broker mirrors BMS's value proposition.
• Howden Re (Hyperion X / Howden): Howden has built a significant reinsurance presence through organic build and acquisitions, including Hyperion/X. Its independent, entrepreneur-led identity closely parallels LSN Ré WALBAUM's family-owned positioning, while operating in overlapping treaty and facultative markets.
• Guy Carpenter & Company: Guy Carpenter is the dedicated reinsurance brokerage arm of Marsh & McLennan and the global market-leading treaty and facultative reinsurance intermediary. It is directly comparable to LSN Ré WALBAUM as a reinsurance broker placing treaty and facultative coverage for cedants across life and non-life lines.
• Aon Reinsurance Solutions: Aon's global reinsurance brokerage practice serves cedants worldwide with treaty, facultative, and capital advisory across life and non-life lines. It is a direct competitor to LSN Ré WALBAUM in the reinsurance intermediation category, although operating at vastly greater scale.

Broad incumbents

• SCOR: SCOR is a major Paris-headquartered global reinsurance carrier (ceding side of LSN's placement work). While not a broker, it is a key counterparty on LSN's treaty and facultative placements and a structural setter of capacity and pricing — making it a benchmark for the French reinsurance ecosystem LSN Ré WALBAUM operates in.

Regional players

• CCR Re: CCR Re is a French reinsurer (backed by Caisse Centrale de Réassurance) underwriting treaty and facultative business, particularly linked to public-interest risks. As a French reinsurer counterpart, it is comparable to the cedant-side counterparties LSN Ré WALBAUM places cedants' business with.
• Besse & Cie / Bessé Conseil en Réassurance: Bessé is a French independent insurance and reinsurance broker with deep treaty and facultative expertise, headquartered in Paris. It is one of LSN Ré WALBAUM's closest direct in-market competitors in French reinsurance intermediation, with overlapping cedant base and product mix.
• Siaci Saint Honoré (DIOT-SIACI Re): Siaci Saint Honoré is now part of the same DIOT-SIACI group as LSN Ré WALBAUM post-2022 merger, providing reinsurance and large-account insurance brokerage in France. It is the closest in-market peer for cedant relationships and reinsurance advisory within the same parent group.

Emerging players

• RKH Reinsurance Brokers: RKH Specialty / Reinsurance is a smaller specialty and reinsurance broker with growing European footprint. It overlaps with LSN Ré WALBAUM in facultative placements and treaty support but is still scaling its reinsurance book relative to the larger incumbents.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/lsn-r%C3%A9

Compliance3 records

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 LSN Ré WALBAUM