LYTIR

Company · QNT

Quantinuum Inc.

Name as listed on its exchange; filed with the SEC as QUANTINUUM INC.

Nasdaq's symbol directory lists QNT on Nasdaq as “Quantinuum Inc. - Class A Common Stock”.

In the 12 months to Nov 8, 2026: 6 filings by holders of 5% or more; 1 congressional trade disclosure; 1 company report (Form 8-K, since May 26, 2026).

All insider filings at the SEC · Appeared in No. 42

Large holders · SEC Schedules 13D and 13G

Five percent and over

Anyone who comes to hold more than 5% of a company's voting shares must tell the SEC. A Schedule 13D is filed by a holder who may seek to influence the company; a 13G by one who states it is a passive investor. An amendment updates an earlier filing, and a stake reported as 0% means the holder says it has sold all, or nearly all, of its shares. Every recent 13D and 13G

  1. BlackRock Portfolio Management LLC filed Oct 27, 2026 Schedule 13G/A passive 1,664,459 shares filing 4.5%
  2. Citadel Advisors LLC filed Oct 6, 2026 Schedule 13G passive filing 7.3%
  3. Honeywell International Inc. filed Aug 13, 2026 Schedule 13G passive filing 79.1%
  4. Capital Research Global Investors filed Aug 12, 2026 Schedule 13G passive filing 5.3%
  5. BlackRock Portfolio Management LLC filed Jul 17, 2026 Schedule 13G passive 2,259,347 shares filing 6.9%
  6. Cambridge Quantum Holdings Ltd filed Jun 22, 2026 Schedule 13G passive filing 71.6%

Congress · STOCK Act

The Althing

Periodic transaction reports. Amounts are the ranges members report; the trade date is when it happened, the report can come up to 45 days later.

  1. Cleo Fields (D-LA06): Purchase Jun 4, 2026 reported Jun 26, 2026 one of 4 trades the member reported that day House Stocks (including ADRs) $1,001 - $15,000

Company reports · SEC Form 8-K

In its own words

Current reports the company filed with the SEC; most items are due within four business days of the event. Each line lists the report's items by the SEC's own titles; the filing says what happened. Reports collected since May 26, 2026; every 8-K at the SEC.

  1. Results of operations and financial condition filing Nov 5, 2026

Sources: SEC EDGAR (Forms 4, 144 and 8-K) and STOCK Act periodic transaction reports. Filings can be late, amended or wrong at the source; see methodology.