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MBRX MOLECULIN BIOTECH INC

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COM (common), issuer CIK 1659617

18 managers (20 13F filers) reported a position in MBRX shares at 2026-03-31, 152,127 shares in all. 4 filers opened a position and 3 filers sold out during the quarter.

Managers
18
13F filers
20
New
4
Added
4
Reduced
2
Sold out
3
Shares held by filers
152,127

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
SABBY MANAGEMENT, LLC75,021$172K3.01%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC32,329$74K<0.01%+17,19113F-HRTimelineGroup
VANGUARD GROUP INCgroup of 3 filers holding19,965$45.7KnewTimeline
HRT FINANCIAL LP13,739$31K<0.01%new13F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…4,421$10.1K<0.01%+4,20313F-HRTimelineGroup
UBS Group AGin group UBS Group AG3,409$7.81K<0.01%-2,45413F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,835$4.2K<0.01%+44213F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.491$1.12K<0.01%-413F-HRTimelineGroup
EFG International AGin group EFG International AG434$994<0.01%013F-HRTimelineGroup
Pinnacle Wealth Planning Services, Inc.281$643<0.01%013F-HRTimeline
NFSG Corp114$261<0.01%013F-HRTimeline
SBI Securities Co., Ltd.43$98<0.01%+1413F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY36$83<0.01%013F-HRTimelineGroup
FMR LLCin group FMR LLC3$7<0.01%new13F-HRTimelineGroup
DANSKE BANK A/S2$5<0.01%013F-HRTimeline
Caitong International Asset Management …2$5<0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1$2<0.01%013F-HRTimelineGroup
CVA Family Office, LLC1$2<0.01%013F-HRTimeline