Company AB Science

AB

FR0010557264

Pharmaceuticals

Market Closed - Euronext Paris 16:55:00 18/09/2026 BST			5-day change	1st Jan Change
0.7050 ^EUR	-0.98%		-3.42%	-54.10%

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	-0.98%	-3.42%	-43.60%	-71.17%	65.41M
MERCK & CO., INC.	-0.50%	+1.71%	+79.55%	+35.77%	363B
MERCK KGAA	-1.22%	-1.22%	+20.85%	-19.25%	65.62B
HALOZYME THERAPEUTICS, INC.	+2.25%	+4.27%	+45.77%	+185.80%	12.45B
KYOWA KIRIN CO., LTD.	-0.29%	+2.27%	-5.37%	-16.54%	7.6B
SK BIOPHARMACEUTICALS CO., LTD.	-1.89%	-6.83%	-27.65%	-14.90%	4.49B
YUHAN CORPORATION	-2.06%	-3.80%	-34.68%	+5.56%	4.19B
BETTA PHARMACEUTICALS CO., LTD.	+1.48%	+2.36%	-31.20%	-13.91%	2.92B
SUPERNUS PHARMACEUTICALS, INC.	-1.98%	+0.72%	-9.08%	+48.15%	2.49B
SHENYANG XINGQI PHARMACEUTICAL CO.,LTD.	-0.41%	-0.71%	-28.25%	-33.78%	1.93B
Average	-0.60%	+0.55%	-3.37%	+10.57%	46.48B
Weighted average by Cap.	-0.60%	+1.38%	+65.27%	+29.85%