mynth
05/2026MajorityLBO

Abenex & Bpifrance take majority stake in Tethys

FRANCE Aerospace, Naval & Defense / Electronics EV €20–50M

Context

Abenex has completed the acquisition of a majority stake in Tethys, a French specialist in pyromechanical systems, through its second small-cap fund. This transaction represents a secondary leveraged buyout, facilitating a complete exit for the previous majority shareholders, which included a group of business angels operating as a search fund and Bpifrance's Definvest fund. The deal was the outcome of a competitive six-month auction process, primarily targeting financial sponsors, which saw Abenex emerge as the successful bidder against other private equity firms. The existing management team, led by President Philippe Saussol, has demonstrated strong confidence in the company's future by reinvesting significantly in the new structure. Bpifrance is also participating in the new chapter by reinvesting through a regional vehicle and its dedicated defense-focused retail fund. The strategic rationale for the acquisition is to accelerate Tethys’s growth trajectory, with the goal of substantially increasing its size over the next five years. Abenex plans to support this expansion by strengthening the commercial team, expanding production facilities, and pursuing a targeted buy-and-build strategy to establish Tethys as an independent European leader in its niche. The investment is underpinned by favorable market dynamics, including rising investment in the defense, space, and critical energy infrastructure sectors.

Tethys, which reported an EBITDA margin of [members only] in 2025, is valued in this transaction at an EV/EBITDA multiple of 5x–12x.

-> Deep-dive in Industry & Manufacturing market trends

Target

Tethys, established in 2004, is a recognized European specialist in the design, assembly, and production of pyromechanical systems and components for critical applications. The company operates within a highly specialized niche market characterized by demanding reliability standards and significant barriers to entry. Its core business serves major industrial clients in the defense, aerospace, and security sectors, including prominent names such as MBDA, Naval Group, ArianeGroup, and Safran. The company distinguishes itself from larger, vertically integrated corporations and consortiums by its position as an agile and independent player, which enhances its strategic value and attractiveness to partners. Tethys’s business model is built on securing long-term industrial programs, where it often serves as the exclusive "single source" provider. These contracts typically span ten to twenty years, ensuring a high degree of revenue recurrence and long-term commercial visibility. The company's expertise is crucial for systems where absolute operational success is non-negotiable, cementing its role as a key supplier within the European industrial base for strategic technologies. Its operations are based in the Var region of France.

Ent. Value

€20–50M

Equity Value

[members only]

Multiples

EV / Revenue

2x–6x

EV / EBITDA

5x–12x

EV / EBIT

[members only]

Historical Financials (EUR)

Year
Rev
EBITDA
EBIT
2025
€5–25M
€0–5M
[members only]
2024
€5–25M
€0–5M
[members only]

Other operations with Abenex / Bpifrance

Other operations with Abenex / Bpifrance
DateAcquirerTargetCountrySector
06/2026EMZ PARTNERS / BPIFRANCE / AMUNDI PRIVATE EQUITYNEXTEAMFRANCEAerostructures
06/2026FRENCH FOOD CAPITAL / BPIFRANCE / BNP PARIBAS DEVELOPPEMENTFABULOUS FRENCH BRASSEURSFRANCEWines & Spirits
04/2026LEGAL & GENERAL L&G / BPIFRANCEBLUEFRANCEMSP (Managed Services)
04/2026BYWAY CAPITAL / BPIFRANCELA TÊTE DANS LES NUAGESFRANCELeisure Facilities
03/2026123 IM / BPIFRANCE / SMALT CAPITALFRIENDLY HOTELS GROUPFRANCEHotels & Accommodation
01/2026DASSAULT AVIATION / BPIFRANCEHARMATTAN AIFRANCEElectronics
12/2025BPIFRANCE / MBDANANOXPLOREFRANCEChips & Processors
11/2025BPIFRANCE / BNP PARIBAS DEVELOPPEMENTSACREDFRANCEPlastics
10/2025SIPAREX / BPIFRANCEBRIFER (LA FERROVIAIRE DE LA BRIE)FRANCERailways
10/2025FRENCH FOOD CAPITAL / BPIFRANCESABRE PARISFRANCEHome & DIY

Similar deals in Aerospace, Naval & Defense

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05/2026PAI PARTNERSMECAER AVIATION GROUPITALYEngines & Systems
05/2026HIG CAPITALINTERNATIONAL AEROSPACE COATINGS IACUNITED STATESMRO (Maintenance, Repair & Overhaul)
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04/2026RHEINMETALLNVL (NAVAL VESSELS LÜRSSEN)GERMANYNaval
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REFERENCES

Valuation range: EV €20–50M

Revenue range: €5–25M

EBITDA range: €0–5M

EV/Revenue range: 2x - 6x

EV/EBITDA range: 5x - 12x

Note: This page provides detailed data on a private equity M&A transaction. Detailed and exact financial metrics for the acquisition of Tethys by Abenex / Bpifrance are reserved for mynth community members. Register for free to unlock full data.

Authors: This transaction was contributed by a verified mynth contributor and cross-checked against available transaction documents and official company communications.

Target: tethys

FAQ

What transaction does this page cover?

This page covers the acquisition of a majority stake in Tethys, a French company specialised in Electronics, by Abenex and Bpifrance in 2026, structured as a leveraged buyout (LBO).

How was the acquisition of Tethys by Abenex valued, and what multiples were paid?

mynth displays the transaction’s enterprise value within the €20–50M band, its EV/EBITDA multiple within the 5x - 12x range, and its EV/revenue multiple within the 2x - 6x range. Exact figures are available to members.

What were Tethys’s revenue and EBITDA at the time of the deal?

At the time of the transaction, Tethys generated annual revenue estimated in the €5–25M range and EBITDA in the €0–5M bracket (FY 2025). Detailed financial figures are available to members.

What sources support the information on this transaction?

Information on this transaction is sourced from the official corporate announcement published by the parties, corroborated by a private document shared by the community and verified by the mynth team to ensure the accuracy of the shared information.

What is mynth?

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