Private company
Who owns Basell Orlen Polyolefins Sp. Z.o.o.
One company in the researched set discloses a stake in Basell Orlen Polyolefins Sp. Z.o.o., none of it sized by anyone who discloses it. Basell Orlen Polyolefins Sp. Z.o.o. is private, so no 13F reports it: a 13F covers exchange listed positions only. These figures exist because each holder disclosed the stake in its own filings.
Basell Orlen Polyolefins Sp. Z.o.o. - Profile
- Type
- joint venture
- Based in
- Poland
- Founded
- 2003
Basell Orlen Polyolefins makes polypropylene and polyethylene at two plants inside the Orlen refining and petrochemical complex at Plock in central Poland, and is the country's only polyolefin producer. Formed in 2003 as an equal venture between Basell Europe Holdings, now part of LyondellBasell, and the Polish refiner Orlen, it draws feedstock from the neighbouring refinery while its partner contributes the Spheripol and Hostalen process technology and licences. The Spheripol polypropylene line was built between 2003 and 2005 and expanded by a fifth in 2019 to 480,000 tonnes a year, and the site also produces 320,000 tonnes a year of high density polyethylene, for a combined capacity approaching 900,000 tonnes. The resins go into packaging, textiles, automotive parts and pipes. Orlen took over the 100,000 tonne low density polyethylene business and its Polish customer base in a separate transaction completed in January 2023.
Source
Basell Orlen Polyolefins Sp. Z.o.o. files nothing with the SEC, so none of this comes from a filer record. The description was written for this site in August 2026 from BOP has completed PP capacity expansion in Plock, Poland (ChemXplore), PKN ORLEN closes acquisition of petrochemical assets (Orlen press release, January 2023) and Basell Orlen completes PP expansion in Poland (ChemOrbis). The ownership figures below come from the holders' filings instead, and are sourced row by row.
The disclosed stakes
One row per position. Where a holder reports the same company in two share classes, both rows are shown rather than summed, because the class is part of a position's identity.
Where each figure comes from
A private stake has no ownership form behind it, so the source is always the holder's own filing or disclosure. Anything modelled says so, with the arithmetic.
- LyondellBasell Industries N.V.. Exhibit 21.1 to the FY2025 10-K (filed 20 Feb 2026) states that LyondellBasell Industries Holdings B.V. owns a 50% interest in Basell Orlen Polyolefins Sp. Z.o.o.. This is a 50 percent ownership interest, written here as the number 50, not as a fraction of 100. Cross-checked against Note 10 (Equity Investments) of the same 10-K, which lists 'Basell Orlen Polyolefins Sp. Z.o.o.' at 50.00% ownership as of both 31 Dec 2025 and 31 Dec 2024, confirming the figure independently within the same filing. LyondellBasell's balance sheet carries a single combined 'Equity investments' line ($3,963 million at 31 Dec 2025 per the 10-K; $3,875 million at 30 Jun 2026 per the most recent 10-Q) covering all equity-method investees together, so no individual carrying value is disclosed for this venture: value_usd is null. sourcesource 2
What this page is not
It is not a complete register. It lists the holders who happen to be inside the researched set and disclosed the stake themselves. A private company can have many other shareholders, and nothing here rules them out: venture investors, founders and employees usually appear in no public filing at all. Percentages are of Basell Orlen Polyolefins Sp. Z.o.o. where a holder stated one, and are missing where no holder did.