Company AB Science

AB

FR0010557264

Pharmaceuticals

Market Closed - Euronext Paris 19:55:00 25/09/2026 +04			5-day change	1st Jan Change
0.6840 ^EUR	-1.30%		-2.98%	-55.47%

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	-	07/07/2026
Laurent Guy DFI	Director of Finance/CFO	-	20/11/2009
Christian Fassotte CTO	Chief Tech/Sci/R&D Officer	-	01/04/2018
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	-	11/07/2001
Patrick Moussy BRD	Director/Board Member	-	20/09/2011
Cécile de Guillebon BRD	Director/Board Member	65	27/06/2021
Catherine Johnston-Roussillon BRD	Director/Board Member	68	27/06/2021
Guillemette Latscha BRD	Director/Board Member	-	27/06/2021
Stéphane Ledermann CHM	Chairman	-	07/07/2026

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	-1.30%	-2.98%	-45.28%	-69.46%	62.37M
MERCK & CO., INC.	+0.54%	+1.30%	+89.38%	+41.17%	367B
MERCK KGAA	+0.78%	+3.97%	+26.64%	-14.56%	66.89B
HALOZYME THERAPEUTICS, INC.	-1.15%	+1.29%	+54.44%	+196.07%	12.93B
KYOWA KIRIN CO., LTD.	+0.24%	+0.49%	-1.78%	-14.49%	7.54B
SK BIOPHARMACEUTICALS CO., LTD.	-1.30%	-2.32%	-25.22%	-10.07%	4.38B
YUHAN CORPORATION	-1.33%	-2.37%	-35.40%	+4.72%	4.07B
BETTA PHARMACEUTICALS CO., LTD.	-4.23%	+2.14%	-28.86%	-12.33%	3.02B
SUPERNUS PHARMACEUTICALS, INC.	-1.46%	+1.57%	-9.29%	+46.05%	2.48B
SHENYANG XINGQI PHARMACEUTICAL CO.,LTD.	-2.18%	-0.66%	-20.69%	-32.24%	1.91B
Average	-1.14%	-0.14%	+0.39%	+13.49%	47.04B
Weighted average by Cap.	+0.44%	+1.56%	+74.15%	+35.19%