| 2016 | change of name to Cognor Holding S.A. |
| 2014 | acquisition of controlling stake in Profil S.A. |
| 2014 | debt re-financing and issue of secured and convertible bonds |
| 2011 | Group re-organisation through sale of Polish and foreign part of distribution business, change in operating area and acquisition of Złomrex; Cognor S.A. becomes Group parent |
| 2009 | consolidation and integration of distribution activities |
| 2009 | merger with Cognor Górnośląski sp. z o.o. (formerly Centrostal Górnośląski sp. z o.o.) |
| 2009 | change of name to Cognor S.A. and change of registered office from Gdańsk to Katowice |
| 2009 | merger of Centrostal S.A. with Złomrex Steel Services S.A., which has companies operating in distribution of steelworks products in Austria and other Central European countries |
| 2008 | merger with Centrostal Opole S.A. |
| 2008 | acquisition of 77.44% stake in Florian Podkarpacie S.A. |
| 2007 | acquisition of 100% stake in Stalexport S.A. |
| 2007 | acquisition of 100% stakes in Centrostal Górnośląski sp. z o.o. and Centrostal Opole S.A. |
| 2006 | acquisition by Złomrex S.A. of controlling stake in Centrostal S.A. (64.4%) |
| 2002 | launch of representative office and later branch in Warsaw, involved in processing of reinforcing steel |
| 2001 | purchase of branch in Kwidzyn |
| 1997 | Centrostal S.A.'s public share offering and debut on Warsaw Stock Exchange |
| 1997 | purchase of branch in Olsztyn |
| 1996 | purchase of branch in Gdynia |
| 1994 | purchase of branch in Słupsk |
| 1993 | purchase of branch in Elbląg |
| 1991 | privatisation of PPOWH and its acquisition by Centrostal S.A. in Gdańsk |
| 1946 | formation of Państwowe Przedsiębiorstwo Obrotu Wyrobami Hutniczymi (PPOWH) in Gdańsk |
