Mabion was created by four local pharmaceutical companies – most of whom are the largest shareholders to this day.

Shareholding structure

* Mr. Maciej Wieczorek holds 100% of the share capital of Glatton Sp. z o.o. and indirectly, through Glatton Sp. z o.o., 55.8% of the share capital of Celon Pharma S.A. and 65.4% of the total number of votes in Celon Pharma S.A.(based on the interim report of Celon Pharma S.A. for the nine-month period of 2025).
No.	Shareholder	Number of shares	Number of votes	Share in total number of votes	Participation in the share capital
1.	Twiti Investments Limited	1 917 982	2 512 282	11,87%	14,17%
2.	Maciej Wieczorek through:*	1 717 485	2 210 335	10,63%	12,47%
	Glatton Sp. z o.o.	1 097 135	1 097 135	6,79%	6,19%
	Celon Pharma S.A.	620 350	1 113 200	3,84%	6,28%
3.	Polfarmex S.A.	1 474 346	1 957 196	9,12%	11,04%
4.	Other	11 052 513	11 052 513	68,38%	62,33%
	Total	16 162 326	17 732 326	100%	100%