Property, plant and equipment

12 Months Ended

Dec. 31, 2025

Property, plant and equipment [abstract]

Note 6. Property, plant and equipment

Accounting policies

Property, plant and equipment are recorded at their acquisition cost. Major renovations and improvements necessary to bring an asset to the working condition for its use as intended by the Company’s management are capitalized. The cost of repairs, maintenance and other renovation work is expensed as incurred.

Property, plant and equipment are depreciated on a straight-line basis according to the estimated useful life of the relevant assets.

The depreciation periods used are as follows:

•General fixtures and fittings, building work: 5 to 10 years;

•Technical installations, equipment and industrial tooling: 3 to 10 years; and

•Office and IT equipment and furniture: 1 to 10 years.

Recoverable amount of property, plant and equipment

Property, plant and equipment with a definite useful life are tested for impairment when there are events or changes in circumstances that indicate that the asset might be impaired. An impairment loss is recognized for the excess of the carrying amount of the asset over its recoverable amount. The recoverable amount of an asset is equal to the higher of (i) its fair value less costs to sell and (ii) its value in use.

Detail of property, plant and equipment

The change in property, plant and equipment is as follows:


(in thousands of euros)	As of January 1, 2025	Increases	Decreases	Transfer	Currency translation	As of December 31, 2025
Fixtures, fittings and installations	3,390	86	—	8	—	3,485
Right of use – Buildings	9,026	132	(92)	—	—	9,067
Technical equipment	2,492	78	(8)	26	—	2,589
Office and IT equipment	1,258	76	(113)	10	(6)	1,225


Tangible assets in progress	141	149	—	(45)	—	245
Prepayments on tangible assets	250	149	(3)	0	—	396
Gross book value of tangible assets	16,559	670	(217)	—	(6)	17,007
Fixtures, fittings and installations	(2,582)	(248)	—	—	—	(2,830)
Right of use – Buildings	(5,473)	(1,098)	65	—	—	(6,505)
Technical equipment	(1,945)	(154)	8	—	—	(2,091)
Office and IT equipment	(1,021)	(108)	110	—	4	(1,015)


Accumulated depreciation of tangible assets(1)	(11,021)	(1,608)	184	—	4	(12,441)
Net book value of tangible assets	5,538	(938)	(33)	—	(1)	4,566

(1)Expenses for the period are detailed in Note 17.4. Depreciation, amortization and provisions expenses


(in thousands of euros)	As of January 1, 2024	Increases	Decreases	Other movements & transfer.	Currency translation	As of December 31, 2024
Fixtures, fittings and installations	3,321	48	—	22	—	3,390
Right of use – Buildings	8,798	228	—	—	—	9,026
Technical equipment	2,327	166	—	—	—	2,492
Office and IT equipment	1,043	227	—	(15)	3	1,258
Transport equipment	34	—	(35)	—	1	—
Tangible assets in progress	44	94	—	3	—	141
Prepayments on tangible assets	144	141	—	(35)	—	250
Gross book value of tangible assets	15,712	903	(35)	(25)	3	16,559
Fixtures, fittings and installations	(2,274)	(308)	—	—	—	(2,582)
Right of use – Buildings	(4,448)	(1,025)	—	—	—	(5,473)
Technical equipment	(1,750)	(196)	—	—	—	(1,945)
Office and IT equipment	(955)	(89)	—	25	(2)	(1,021)
Transport equipment	(35)	—	35	—	(1)	—
Accumulated depreciation of tangible assets(1)	(9,461)	(1,617)	35	25	(3)	(11,021)
Net book value of tangible assets	6,251	(714)	—	—	—	5,538

(1)Expenses for the period are detailed in Note 17.4. Depreciation, amortization and provisions expenses

Right of use - Buildings

In 2024, the €0.2 million increase in Right of use - Buildings mainly relates to the impact of an annual rent adjustment for the Wattignies and Wacano leases based on the INSEE (National Institute of Statistics and Economic Studies) index for respectively €0.1 million and €0.1 million.

Office and IT equipment

In 2024, the €0.2 million increase in Office and IT equipment is primarily related to the selected renewal of IT hardware, including server infrastructure, laptops, and monitors.