LYTIR

Company · MBRX

Moleculin Biotech, Inc.

Nasdaq's symbol directory lists MBRX on Nasdaq as “Moleculin Biotech, Inc. - Common Stock”.

In the 12 months to Nov 8, 2026: insiders bought on 3 occasions (value not filed); 4 filings by holders of 5% or more; 12 company reports (Form 8-K, since May 26, 2026).

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. Foster Jonathan P., Chief Financial Officer bought on 1 day latest Aug 3, 2026 value not filed
  2. KLEMP WALTER V, CEO and President bought on 1 day latest Aug 3, 2026 value not filed
  3. PICKER DONALD H, Chief Science Officer bought on 1 day latest Aug 3, 2026 value not filed
Every trade (3)
  1. BUYFoster Jonathan P., Chief Financial Officer bought Aug 3, 2026 293,333 shares filing —
  2. BUYKLEMP WALTER V, CEO and President bought Aug 3, 2026 533,333 shares filing —
  3. BUYPICKER DONALD H, Chief Science Officer bought Aug 3, 2026 173,333 shares filing —

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. KLEMP WALTER V filed Aug 25, 2026 Schedule 13D may seek influence 2,070,761 shares filing 9.9%
  2. Foster Jonathan P. filed Aug 25, 2026 Schedule 13D may seek influence 1,288,207 shares filing 6.3%
  3. CVI Investments, Inc. filed Aug 10, 2026 Schedule 13G passive filing 9.9%
  4. Mitchell P. Kopin filed Aug 6, 2026 Schedule 13G passive filing 4.99%

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. Regulation FD disclosure filing Nov 4, 2026
  2. Regulation FD disclosure filing Oct 30, 2026
  3. Material modification to rights of security holders; Amendments to articles or bylaws; change in fiscal year; Other events filing Oct 20, 2026
  4. Regulation FD disclosure filing Oct 16, 2026
  5. Departure or appointment of directors or officers; Submission of matters to a vote of security holders filing Oct 9, 2026
  6. Regulation FD disclosure filing Oct 5, 2026
  7. Regulation FD disclosure filing Sep 29, 2026
  8. Regulation FD disclosure filing Sep 28, 2026
  9. Regulation FD disclosure filing Sep 25, 2026
  10. Regulation FD disclosure; Other events filing Sep 23, 2026
  11. Notice of delisting or failure to meet a listing standard filing Sep 18, 2026
  12. Regulation FD disclosure filing Sep 14, 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.