Company AB Science

AB

FR0010557264

Pharmaceuticals

Market Closed - Euronext Paris 16:55:00 11/09/2026 BST			5-day change	1st Jan Change
0.7300 ^EUR	+3.55%		-0.27%	-52.47%

09-11	Certain Ordinary Shares of AB Science S.A. are subject to a Lock-Up Agreement Ending on 11-SEP-2026.	CI
08-17	AB Science completes settlement and delivery of its private placement

Business description: AB Science

AB Science specializes in research, development, and sales of kinase protein inhibitors (KPI), therapeutic drugs used in treating cancerous tumors, inflammatory and neuro-degenerative diseases in both humans and animals.

Number of employees: 31

Sales by Activity: AB Science

Fiscal Period: December	2021 (EUR)	2022 (EUR)	2023 (EUR)	2024 (EUR)	2025 (EUR)
Pharmaceuticals	1.61M	958K	970K	1.07M	1.17M

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Geographical breakdown of sales: AB Science

Fiscal Period: December	2021 (EUR)	2022 (EUR)	2023 (EUR)	2024 (EUR)	2025 (EUR)
Europe	-	-	-	-	955K
outside Europe	-	-	-	-	219K

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Executive Committee: AB Science

Manager	Title	Age	Since
Stéphane Ledermann CEO	Chief Executive Officer	-	06/07/2026
Laurent Guy DFI	Director of Finance/CFO	-	19/11/2009
Christian Fassotte CTO	Chief Tech/Sci/R&D Officer	-	31/03/2018
Alexis Bernard PRN	Corporate Officer/Principal	-	-

See AB SCIENCE governance

Composition of the Board of Directors: AB Science

Director	Title	Age	Since
Alain Moussy CHM	Chairman	-	10/07/2001
Patrick Moussy BRD	Director/Board Member	-	19/09/2011
Cécile de Guillebon BRD	Director/Board Member	65	26/06/2021
Catherine Johnston-Roussillon BRD	Director/Board Member	68	26/06/2021
Guillemette Latscha BRD	Director/Board Member	-	26/06/2021
Stéphane Ledermann CHM	Chairman	-	06/07/2026

Composition of the Board of Directors

Shareholders: AB Science

Name	Stocks	%	Valuation
Jean-Claude Marian 26.86 %	25,932,042	26.86 %	21 M €
Gestys SA 0.0155 %	15,000	0.0155 %	12 249 €
UBS Wealth Management SGIIC SA 0.003211 %	3,100	0.003211 %	2 531 €

Name	Stocks	%	Valuation
Friedland Gestion SAS 5.198 %	85,471	5.198 %	33 160 €

Name	Stocks	%	Valuation
Friedland Gestion SAS 4.167 %	64,103	4.167 %	20 403 €

List of AB SCIENCE shareholders

Company details: AB Science

AB Science SA

3, avenue George V

75008, Paris

+33 1 47 20 00 14

http://www.ab-science.com

Specialty & Advanced Pharmaceuticals

Add to a list 0 selected To use this feature you must be a member Log in Sign up	Change	5-day change	1-year change	3-year change	Capi.($)
AB SCIENCE	+3.55%	-0.27%	-39.87%	-72.81%	67.79M
MERCK & CO., INC.	-0.54%	-4.26%	+73.81%	+32.02%	355B
MERCK KGAA	-0.15%	-3.24%	+23.14%	-17.84%	66.33B
HALOZYME THERAPEUTICS, INC.	+0.19%	-2.71%	+39.40%	+175.44%	12.17B
KYOWA KIRIN CO., LTD.	-0.66%	-8.82%	-10.51%	-18.35%	7.47B
SK BIOPHARMACEUTICALS CO., LTD.	-4.80%	-8.31%	-28.47%	-9.46%	4.64B
YUHAN CORPORATION	+0.63%	-2.46%	-33.67%	+6.48%	4.42B
BETTA PHARMACEUTICALS CO., LTD.	-1.24%	-6.98%	-35.59%	-11.45%	2.86B
SUPERNUS PHARMACEUTICALS, INC.	-0.12%	-4.34%	-8.40%	+35.15%	2.42B
SHENYANG XINGQI PHARMACEUTICAL CO.,LTD.	-1.84%	-5.00%	-28.40%	-25.51%	1.9B
Average	-0.50%	-4.18%	-4.86%	+9.37%	45.74B
Weighted average by Cap.	-0.50%	-4.15%	+60.53%	+26.60%