LYTIR

Company · RUBI

Rubico Inc.

Nasdaq's symbol directory lists RUBI on Nasdaq as “Rubico Inc. - Common Stock”.

In the 12 months to Nov 8, 2026: insiders bought on 1 occasion ($394K); 2 filings by holders of 5% or more.

All insider filings at the SEC

Insider trades · SEC Form 4

Those inside the hall

Open-market purchases and sales only. Legs one person filed for one day are combined.

Who traded

  1. HRT FINANCIAL LP bought on 1 day latest Jun 11, 2026 bought $394K
Every trade (1)
  1. BUYHRT FINANCIAL LP bought Jun 11, 2026 484,963 shares filing $394K

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. Trillium Trading, LLC filed Jun 12, 2026 Schedule 13G/A passive 0 shares filing 0%
  2. Trillium Trading, LLC filed Jun 11, 2026 Schedule 13G passive 175,000 shares filing 5.4%

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