ETRACS Whitney U.S. Critical Technologies ETN (WUCT) is a senior unsecured exchange-traded note issued by UBS AG that provides unleveraged long exposure to the performance of the Solactive Whitney U.S. Critical Technologies CNTR Index (SOLUCTIC), less a daily tracking fee of 0.55% per annum; the ETN does not pay coupons, guarantee principal repayment or offer downside protection, subjecting investors to full loss of principal if the Index declines sufficiently to offset fees. The underlying Index is a market-capitalization weighted benchmark, subject to individual company caps, tracking large- and mid-cap companies from developed markets domiciled primarily in the U.S. that are linked to 14 critical technology sectors defined by the U.S. Department of Defense, including areas such as advanced computing, artificial intelligence, biotechnology and quantum science; constituents must also achieve a minimum geostrategic risk rating score assigned by J.H. Whitney Data Services LLC using a proprietary model evaluating factors like sanctions exposure and national policies. Launched with an initial trade date of March 24, 2023, and a stated principal amount of $25 per note, the ETN matures on March 13, 2053, trades on NYSE Arca under ticker WUCT, and supports early holder redemption in minimum lots of 50,000 notes (subject to UBS discretion) with a 0.125% redemption fee; UBS retains a call right on all outstanding notes with at least 18 days' notice. Headquartered in Zurich, Switzerland, UBS AG, through its London Branch as issuer, operates globally with principal U.S. activities via UBS Investment Bank and affiliates like UBS Securities LLC as calculation agent; the Index is calculated and administered by Solactive AG in Frankfurt, Germany, with J.H. Whitney as index selection party. Recent developments include UBS announcing call settlement amounts for WUCT among seven ETNs on December 10, 2024, signaling ongoing management of the product amid market conditions, while multiple prospectus supplements filed in 2025 (e.g., June 23 and June 25) reflect prospective updates to terms for similar structured notes, though no confirmed acceleration or delisting for WUCT as of late 2025.