Ultra Clean Holdings is trading 4.49% down in pre-market at $73.00, with the August 14 disclosure of a potential $400 million at-the-market offering remaining the main overhang. - No new August 24, 2026 company announcement or filing was identified. - The disclosure permits share issuance and has raised dilution concerns. - A weaker technology backdrop may add pressure, with the Nasdaq Composite down 0.51% pre-market, but it does not clearly explain the full decline.