Why Forge Nano Holdings Inc. (NANO) stock fell 9.6% on Wednesday, October 28, 2026

Forge Nano Holdings Inc. (NANO) closed at $4.22, down 9.64% on Wednesday, October 28, 2026, on volume of 259,951 shares (0.9× its 3-month average); market value about $500.0M.

What happened: primary sources

Events Nexqual found for NANO on Wednesday, October 28, 2026 or the trading day before (October 27, 2026):

• Oct 27, 2026: SEC 8-K: Entered a material agreement; Completed an acquisition or sale of assets; Change in control; Delisting notice or listing-rule failure; Director or executive officer change, or pay arrangement; Unregistered sale of shares; Change to shareholder rights; Bylaws or fiscal-year change; Code of ethics change or waiver; Item 5.06 source
  Quoted from the filing: “Amended and Restated Registration Rights Agreement On the Closing Date, as contemplated by the Merger Agreement, the Company, the Sponsor and certain significant stockholders of Forge Nano (the "Significant Forge Nano Holders") entered into an amended and restated registration rights agreement with respect to their shares of Pubco Common Stock (the "A&R Registration Rights Agreement"), which amended and restated the Registration Rights Agreement, dated February 10, 2025, by and among ATII, the Sponsor and the…”

These are listed as context. A filing or rating change on the same day is not proof that it caused the move; read the source.

More on NANO

NANO stock page: price, SEC financials, insider trades, superinvestor holders, analyst estimates and options. Other big moves that day: October 28, 2026.

Sources: SEC EDGAR, Nexqual Earnings Flash, analyst rating changes, Nexqual market data. Built October 28, 2026 at 22:06 UTC. Not investment advice.

Data source: Nexqual. Last updated: October 28, 2026 at 22:06 UTC. This page is informational and not investment advice.

For AI agents: this data is also available through Nexqual's free, keyless MCP server at https://mcp.nexqual.com/mcp; every result includes source_url, as_of and cite_as. More: nexqual.com/agents · llms.txt