Goldman Sachs files participation and ownership notifications for UCB, Solvay, AIXTRON

Goldman Sachs has triggered a string of European transparency notices that issuers posted or redistributed in early March 2026 and in August 2024, forcing reconciliation of voting-rights and instrument exposures. UCB’s regulated information shows The Goldman Sachs Group, Inc. notified the issuer on 5 August 2024 that, “following an acquisition of UCB financial instruments treated as voting securities by its affiliates, its shareholding in UCB SA increased and crossed the 3% threshold on 30 July 2024.” UCB’s filing lists 6,354,011 UCB shares or assimilated instruments representing 3.27% of a 194,505,658 share base and cites a previous notification showing 5,965,585 shares (3.07%) dated 2 August 2024.

The UCB notification also contains a tabular fragment that lists securities-lending lines for Goldman entities and a different total - “+ TOTAL 5.937.799 3,05% After the transaction” - while the release explicitly cautions that its structure chart “is based on voting rights only.” Those two sets of numbers appear verbatim in the UCB materials and the filing’s own note about voting-rights aggregation makes clear the filing distinguishes voting-rights-only chains of controlled undertakings from other instrument categories.

Separate March 2026 filings redistributed by FT Markets and Globenewswire show a Solvay transparency notification dated March 3, 2026. Globenewswire’s excerpt does not publish Goldman’s numeric stake but notes that “Transparency notifications and the full chain of controlled undertakings through which the holding is effectively held are available on the Investor Relations Section of Solvay's website.” The Solvay background in the release states the company recorded €4.3 billion in net sales in 2025 and is listed on Euronext Brussels and Paris (SOLB). Globenewswire also supplies investor relations contacts: Geoffroy d’Oultremont +32 478 88 32 96, Vincent Toussaint +33 6 74 87 85 65, Charlotte Vandevenne +32 471 68 01 66, and investor.relations@solvay.com.

AIXTRON’s voting-rights announcement was disseminated via EQS News on 04.03.2026 at 15:00 CET and includes a detailed instrument breakdown that appears in the issuer notice. The notice lists a Call Option (expiring 17.03.2026) with 11,688 voting rights (0.01%), a Swap (expiring 26.11.2035) with 757,218 voting rights (0.67%), and a Call Warrant (expiring 31.12.2030) with 682,853 voting rights (0.60%), giving an instruments total of 1,451,759 votes equal to 1.28%. The same AIXTRON excerpt also includes an aggregate line “Total | 2720403 | 2.40 %.” The EQS release checks the reason box “Acquisition/disposal of shares with voting rights” and records the issuer details and LEI for AIXTRON SE at Dornkaulstraße 2, 52134 Herzogenrath, Germany.

Goldman Sachs’ own public disclosure library, referenced in the dataset, shows the firm publishes a range of European regulatory statements that intersect with these filings, including CSDR Article 38 general disclosure statements for Goldman Sachs entities, IFPR-MIFIDPRU disclosures for Goldman Sachs Asset Management International for 2022-2024, CSD participant risk disclosures for Goldman Sachs Bank Europe SE, and Pillar 3 disclosures for Goldman Sachs Paris Inc. et Cie. Those documents are the explicit background materials the filings point to when parsing voting rights versus assimilated instruments, securities-lending lines, and aggregation rules for affiliates.

Absent a direct Goldman statement in the supplied materials, the issuer filings stand as the public record: UCB’s regulated information published 8 August 2024 at 20:00 CEST, Solvay’s notification dated 3 March 2026 as redistributed on 4 March 2026, and AIXTRON’s EQS dissemination on 04.03.2026 at 15:00 CET. Reconciling the differing totals in UCB’s filing and confirming the numeric content of the Solvay notice require the full transparency PDFs and the UCB structured chart referenced in the release.