Sonnet BioTherapeutics Holdings, Inc.
SONNDelisted Dec 2, 2025- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001106838
Sonnet BioTherapeutics Holdings, Inc. was delisted on Dec 2, 2025; its insiders filed their last Form 4 on Dec 4, 2025; 27 institutions reported holding it in 13F filings for Q3 2025, worth $3.53M in total; no superinvestor held it.
13F holders, Q4 2025
Institutional positions in Sonnet BioTherapeutics Holdings, 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
SONN is no longer listed, and 13F filings after Q3 2025 list far fewer holders. See Q3 2025
- Institutional holders
- 1
- −26 vs. Q3 2025
- Shares held
- 37.2K
- −733.9K (−95.2%) vs. Q3 2025
- Total value
- $170.3K
- −$3.36M (−95.2%) vs. Q3 2025
- New holders
- 1
- 0 more added
- Sold out
- 27
- 0 more reduced
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SONN 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 | 0 | $0 |
| Q1 2026 | 0 | $0 |
| Q4 2025 | 1 | $170.3K |
| Q3 2025 | 27 | $3.53M |
| Q2 2025 | 9 | $223.7K |
| Q1 2025 | 8 | $216.1K |
| Q4 2024 | 9 | $130.2K |
| Q3 2024 | 3 | $2.97K |
| Q2 2024 | 11 | $550.0K |
| Q1 2024 | 10 | $117.6K |
| Q4 2023 | 10 | $157.8K |
| Q3 2023 | 10 | $110.1K |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Sonnet BioTherapeutics Holdings, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Formidable Asset Management, LLC | 37,185 | $170.3K | 0.02% | +37,185 | New |
| Ikarian Capital, LLC | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| Vanguard Group Inc | 0 | $0 | 0.00% | −96,382−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −74,265−100.0% | Sold out |
| Geode Capital Management, LLC | 0 | $0 | 0.00% | −61,840−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −56,339−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −55,134−100.0% | Sold out |
| BIT Capital GmbH | 0 | $0 | 0.00% | −48,358−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −46,082−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −26,266−100.0% | Sold out |
| Morgan Stanley | 0 | $0 | 0.00% | −25,808−100.0% | Sold out |
| State Street Corp | 0 | $0 | 0.00% | −22,534−100.0% | Sold out |
| BlackRock, Inc. | 0 | $0 | 0.00% | −21,940−100.0% | Sold out |
| Northern Trust Corp | 0 | $0 | 0.00% | −17,860−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −16,784−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −14,972−100.0% | Sold out |
| Investment House LLC | 0 | $0 | 0.00% | −10,625−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −10,562−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −7,537−100.0% | Sold out |
| Larson Financial Group LLC | 0 | $0 | 0.00% | −4,303−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −1,051−100.0% | Sold out |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −636−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −277−100.0% | Sold out |
| Golden State Wealth Management, LLC | 0 | $0 | 0.00% | −202−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −134−100.0% | Sold out |
| Advisor Group Holdings, Inc. | 0 | $0 | 0.00% | −175−100.0% | Sold out |
| Carolina Wealth Advisors, LLC | 0 | $0 | 0.00% | −32−100.0% | Sold out |