Moleculin Biotech, Inc.
MBRX- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001659617
In the last 90 days, Moleculin Biotech, Inc. insiders filed 3 open-market purchases and 0 sales; 18 institutions reported holding it in 13F filings for Q2 2026, worth $518.5K in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Moleculin Biotech, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 17
- −8 vs. Q3 2025
- Shares held
- 95.2K
- +64.1K (+205.9%) vs. Q3 2025Converted for a 1-for-25 split
- Total value
- $315.2K
- −$97.5K (−23.6%) vs. Q3 2025
- New holders
- 5
- 5 more added
- Sold out
- 13
- 6 more reduced
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MBRX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 18 | $518.5K |
| Q1 2026 | 20 | $347.9K |
| Q4 2025 | 17 | $315.2K |
| Q3 2025 | 25 | $412.7K |
| Q2 2025 | 22 | $117.9K |
| Q1 2025 | 23 | $1.44M |
| Q4 2024 | 21 | $790.0K |
| Q3 2024 | 19 | $1.31M |
| Q2 2024 | 16 | $1.10M |
| Q1 2024 | 19 | $1.53M |
| Q4 2023 | 24 | $4.44M |
| Q3 2023 | 22 | $925.1K |
| Q2 2023 | 22 | $1.33M |
| Q1 2023 | 23 | $2.91M |
| Q4 2022 | 25 | $3.17M |
| Q3 2022 | 27 | $3.16M |
| Q2 2022 | 26 | $4.32M |
| Q1 2022 | 23 | $5.26M |
| Q4 2021 | 26 | $5.61M |
| Q3 2021 | 24 | $8.57M |
| Q2 2021 | 32 | $10.9M |
| Q1 2021 | 29 | $8.74M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Moleculin Biotech, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Citadel Advisors LLC | 33,085 | $109.5K | 0.00% | +33,085 | New |
| Jane Street Group, LLC | 22,550 | $74.6K | 0.00% | +22,550 | New |
| Vanguard Group Inc | 15,544 | $51.5K | 0.00% | +5,947+62.0% | AddedConverted for a 1-for-25 split |
| Geode Capital Management, LLC | 15,138 | $50.1K | 0.00% | +6,810+81.8% | AddedConverted for a 1-for-25 split |
| UBS Group AG | 5,863 | $19.4K | 0.00% | +5,704+3,596.7% | AddedConverted for a 1-for-25 split |
| Tower Research Capital LLC (TRC) | 1,393 | $4.61K | 0.00% | +1,058+315.6% | AddedConverted for a 1-for-25 split |
| BlackRock, Inc. | 495 | $1.64K | 0.00% | 00.0% | UnchangedConverted for a 1-for-25 split |
| EFG International AG | 434 | $1.44K | 0.00% | +434 | New |
| Pinnacle Wealth Planning Services, Inc. | 281 | $930 | 0.00% | +281 | New |
| Rockefeller Capital Management L.P. | 218 | $722 | 0.00% | −362−62.4% | ReducedConverted for a 1-for-25 split |
| Newbridge Financial Services Group, Inc. | 114 | $377 | 0.00% | −1−0.6% | ReducedConverted for a 1-for-25 split |
| Morgan Stanley | 36 | $119 | 0.00% | −1−2.8% | ReducedConverted for a 1-for-25 split |
| Bank of America Corp | 36 | $119 | 0.00% | +25+238.3% | AddedConverted for a 1-for-25 split |
| SBI Securities Co., Ltd. | 29 | $96 | 0.00% | −1−2.8% | ReducedConverted for a 1-for-25 split |
| Danske Bank A/S | 2 | $7 | 0.00% | +2 | New |
| Advisor Group Holdings, Inc. | 1 | $3 | 0.00% | −1−41.9% | ReducedConverted for a 1-for-25 split |
| CVA Family Office, LLC | 1 | $3 | 0.00% | −0−26.5% | ReducedConverted for a 1-for-25 split |
| HRT Financial LP | 0 | $0 | 0.00% | −4,608−100.0% | Sold outConverted for a 1-for-25 split |
| LPL Financial LLC | 0 | $0 | 0.00% | −2,323−100.0% | Sold outConverted for a 1-for-25 split |
| Ieq Capital, LLC | 0 | $0 | 0.00% | −1,455−100.0% | Sold outConverted for a 1-for-25 split |
| Wealth Dimensions Group, Ltd. | 0 | $0 | 0.00% | −800−100.0% | Sold outConverted for a 1-for-25 split |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −511−100.0% | Sold outConverted for a 1-for-25 split |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −510−100.0% | Sold outConverted for a 1-for-25 split |
| Truist Financial Corp | 0 | $0 | 0.00% | −420−100.0% | Sold outConverted for a 1-for-25 split |
| Ethos Financial Group, LLC | 0 | $0 | 0.00% | −401−100.0% | Sold outConverted for a 1-for-25 split |
| Moors & Cabot, Inc. | 0 | $0 | 0.00% | −400−100.0% | Sold outConverted for a 1-for-25 split |
| Bogart Wealth, LLC | 0 | $0 | 0.00% | −12−100.0% | Sold outConverted for a 1-for-25 split |
| North Star Investment Management Corp. | 0 | $0 | 0.00% | −1−100.0% | Sold outConverted for a 1-for-25 split |
| NBC Securities, Inc. | 0 | $0 | 0.00% | −1−100.0% | Sold outConverted for a 1-for-25 split |
| Royal Bank of Canada | 0 | $0 | 0.00% | −0−100.0% | Sold outConverted for a 1-for-25 split |