ONO
ONESANO
GPW
LISTED
Shareholders
as of August 13, 2026 · source: notifications under Art. 69 of the Offering Act · 2 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.
48.93%
32,235,022 shares
LARGEST STAKE
45.51%
Roman Krzysztof Karkosik wraz z podmiotami zależnymi
TOP 3 CONCENTRATION
Combined stake of the three largest shareholders above the 5% vote threshold.
51.07%
2 entities above 5% of votes
LATEST CHANGE
June 30, 2026
ESPI (wykaz z WZ)
Ownership structure
stakes per latest notifications · shares outstanding: 65,880,000 (report, Aug 13, 2026)
SHAREHOLDERS ≥5% OF VOTES 51.07%
FREE FLOAT 48.93%
HOLDER
STAKE
SHARES
VOTES
NOTIFICATION
Roman Krzysztof Karkosik wraz z podmiotami zależnymi
Expand to see the holders included in this stake — not counted separately.
45.51%
29,985,129
45.51%
Roman Krzysztof Karkosik wraz z podmiotami zależnymi
Expand to see the holders included in this stake — not counted separately.
45.51%
29,985,129
45.51%
FREE FLOAT — BELOW 5% OF VOTES
Other
44.2%
29,120,034
44.2%
—
Roman Krzysztof Karkosik wraz z podmiotami zależnymi
Expand to see the holders included in this stake — not counted separately.
45.51%
29,985,129 shares
NOTIFICATION: Aug 13, 2026
Roman Krzysztof Karkosik wraz z podmiotami zależnymi
Expand to see the holders included in this stake — not counted separately.
45.51%
29,985,129 shares
NOTIFICATION: Aug 13, 2026
Boryszew S.A.
42.5%
28,000,000 shares
NOTIFICATION: Aug 13, 2026
Roman Krzysztof
3.01%
1,982,629 shares
NOTIFICATION: Aug 13, 2026
RKK Investments Sp. z o.o.
0%
2,500 shares
NOTIFICATION: Aug 13, 2026
Unibax Sp. z o.o.
5.56%
3,659,849 shares
NOTIFICATION: Aug 13, 2026
FREE FLOAT — BELOW 5% OF VOTES
Tomasz Kaczmarek
4.73%
3,114,988 shares
NOTIFICATION: Jun 30, 2026
Other
44.2%
29,120,034 shares
composition undisclosed
Announcement history
crossings above/below the 5% / 10% / 20% thresholdsJun 30, 2026
ESPI (wykaz z WZ) — baseline reading
Boryszew S.A.:
new in the registry, 42.50%
→
Capital and votes
Number of shares
65,880,000
ISIN
PLSKTAN00010
Sector
Biotechnologia
Market
GPW
Country
PL
Listing date
January 01, 1999
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.