MEG
MEGARON
GPW
LISTED
Shareholders
as of September 24, 2026 · source: notifications under Art. 69 of the Offering Act · 6 entities above 5% of votes
FREE FLOAT
The portion of capital not covered by notifications above 5% of votes — its composition is not publicly known.
8.51%
229,770 shares
LARGEST STAKE
42.66%
Piotr Sikora
TOP 3 CONCENTRATION
Combined stake of the three largest shareholders above the 5% vote threshold.
73.12%
3 entities above 5% of votes
LATEST CHANGE
June 29, 2026
ESPI (wykaz z WZ)
Ownership structure
stakes per latest notifications · shares outstanding: 2,700,000 (report, Jun 30, 2026)
SHAREHOLDERS ≥5% OF VOTES 91.49%
FREE FLOAT 8.51%
HOLDER
STAKE
SHARES
VOTES
NOTIFICATION
Other
8.51%
229,770
4.78%
—
Piotr Sikora
42.66%
1,151,821 shares
NOTIFICATION: Sep 24, 2026
Andrzej Zdanowski
21.3%
575,000 shares
NOTIFICATION: Sep 24, 2026
Mariusz Sikora
9.16%
247,299 shares
NOTIFICATION: Sep 24, 2026
Kasper Zaziemski
6.15%
166,110 shares
NOTIFICATION: Sep 24, 2026
Kajetan Zaziemski
6.11%
165,000 shares
NOTIFICATION: Sep 24, 2026
Kornel Zaziemski
6.11%
165,000 shares
NOTIFICATION: Sep 24, 2026
Other
8.51%
229,770 shares
composition undisclosed
Announcement history
crossings above/below the 5% / 10% / 20% thresholdsJun 29, 2026
ESPI (wykaz z WZ) — baseline reading
Kornel Zaziemski:
new in the registry, 6.88%
→
Capital and votes
Number of shares
2,700,000
ISIN
PLMGRON00016
Sector
materiały budowlane
Market
GPW
Country
PL
Listing date
May 01, 2011
Where this data comes from
The structure is built from notifications shareholders file after crossing 5%, 10%, 15%, 20%, 25%, 33%, 50%, 75% and 90% of votes.
Below 5% there is no disclosure obligation, so the remaining capital is shown collectively as free float — its composition is not publicly known.
Stakes are not updated in real time. The date next to each entity is its last notification date, not today's date.
The share count behind every percentage comes from the newest (by as-of date) periodic report or art. 69 notification — not from the company's GPW/NewConnect profile.