Private company
Who owns LyondellBasell Covestro Manufacturing Maasvlakte V.O.F.
One company in the researched set discloses a stake in LyondellBasell Covestro Manufacturing Maasvlakte V.O.F., none of it sized by anyone who discloses it. LyondellBasell Covestro Manufacturing Maasvlakte V.O.F. 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.
LyondellBasell Covestro Manufacturing Maasvlakte V.O.F. - Profile
- Type
- joint venture
- Based in
- Netherlands
- Founded
- 2003
This Dutch general partnership holds the propylene oxide and styrene monomer plant on the Maasvlakte, in the port of Rotterdam. The plant started up in 2003 on a 60 hectare site, drawing feedstock through a seven kilometre pipeline from Europoort, and is the only site in Europe running LyondellBasell's combined PO/SM process, which produces propylene oxide and styrene monomer together in a single reaction sequence. Propylene oxide from the plant goes into seat cushions, coatings, pet food and antifreeze, while styrene monomer feeds expandable foam, engineering plastics, food packaging and construction materials. The site employs around 160 people on continuous shift operations and is run by LyondellBasell on behalf of itself and its equal partner Covestro. In March 2025 the two owners decided to shut the unit permanently, citing global overcapacity, rising imports from Asia and the cost of producing in Europe, with a phased shutdown and preparation for demolition running to the end of 2026.
Source
LyondellBasell Covestro Manufacturing Maasvlakte V.O.F. 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 Maasvlakte site (LyondellBasell), LyondellBasell and Covestro announce permanent closure of PO11 unit at Maasvlakte, Netherlands (Covestro) and LyondellBasell, Covestro to shutter propylene unit (Chemical Processing). 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 Lyondell PO-11 C.V. owns a 50% interest in LyondellBasell Covestro Manufacturing Maasvlakte V.O.F.. This is a 50 percent ownership interest, written here as the number 50, not as a fraction of 100. Note 10 (Equity Investments) separately lists a 'European PO JV' at 50.00% ownership without naming the legal entity; this Netherlands-incorporated, Covestro-partnered propylene-oxide venture (Lyondell PO-11 C.V. holding 50%) is judged the most likely match by geography and business description, but the 10-K does not explicitly equate the two names, so this identification is not certain. 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 LyondellBasell Covestro Manufacturing Maasvlakte V.O.F. where a holder stated one, and are missing where no holder did.