LYTIR

Company · BBTX

Bambusa Therapeutics, Inc.

Nasdaq's symbol directory lists BBTX on Nasdaq as “Bambusa Therapeutics, Inc. - Common stock”.

In the 12 months to Nov 8, 2026: insiders bought on 3 occasions ($52.6M); 2 filings by holders of 5% or more; 1 company report (Form 8-K, since May 26, 2026).

All insider filings at the SEC · Appeared in No. 44, No. 43

Insider purchases and sales, by month (last 12 months)Insider purchases: $52.6M in total; Insider sales: $0 in total.Oct: Insider purchases $6.6MNov: Insider purchases $46.0MDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $52.6MInsider sales below: $0
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.

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. RA CAPITAL MANAGEMENT, L.P. bought on 2 days latest Nov 2, 2026 bought $46.6M
  2. Salvia Investment GmbH bought on 1 day latest Nov 2, 2026 bought $6.0M
Every trade (3)
  1. BUYRA CAPITAL MANAGEMENT, L.P. bought Nov 2, 2026 2,500,000 shares 2 legs combined filing $40.0M
  2. BUYSalvia Investment GmbH bought Nov 2, 2026 375,000 shares filing $6.0M
  3. BUYRA CAPITAL MANAGEMENT, L.P. bought Oct 30, 2026 453,820 shares 2 legs combined filing $6.6M

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. RA Capital Management, L.P. filed Nov 6, 2026 Schedule 13D may seek influence 7,429,758 shares filing 14.6%
  2. ATHOS KG filed Nov 5, 2026 Schedule 13G passive filing 9.2%

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. Amendments to articles or bylaws; change in fiscal year; Regulation FD disclosure filing Nov 3, 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.