Tourmaline Bio, Inc.
TRMLDelisted Oct 28, 2025- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001827506
Tourmaline Bio, Inc. was delisted on Oct 28, 2025; its insiders filed their last Form 4 on Oct 28, 2025; 134 institutions reported holding it in 13F filings for Q3 2025, worth $1.03B in total; no superinvestor held it.
Q4 2023 vs. Q3 2023
How the institutions holding Tourmaline Bio, Inc. changed between Q3 2023 and Q4 2023.
All holders in Q4 2023All holders in Q3 2023
| Measure | Q3 2023 | Of which not filed for Q4 2023 | Q4 2023 | Change |
|---|---|---|---|---|
| Holders | 49 | 1 | 54 | +6 |
| Shares | 27.4M | 16.1K | 13.0M | −14.4M (−52.5%) |
| Value | $77.1M | $45.4K | $338.2M | +$261.1M (+339.0%) |
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so the changes leave them out.
New holders (21)
Institutions that held Tourmaline Bio, Inc. at the end of Q4 2023 but not at the end of Q3 2023.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Deep Track Capital, LP | 1,815,854 | $47.5M | 1.67% |
| Blue Owl Capital Holdings LP | 1,332,302 | $32.4M | 7.74% |
| TCG Crossover Management, LLC | 1,007,902 | $26.4M | 2.93% |
| Braidwell LP | 906,820 | $23.7M | 0.87% |
| Vivo Capital, LLC | 591,882 | $15.5M | 1.27% |
| RTW Investments, LP | 398,850 | $10.4M | 0.16% |
| Velan Capital Investment Management LP | 319,080 | $8.35M | 5.92% |
| Logos Global Management LP | 284,372 | $7.44M | 0.83% |
| Acuta Capital Partners, LLC | 231,882 | $6.07M | 3.42% |
| HighTower Advisors, LLC | 53,418 | $1.40M | 0.00% |
| Marshall Wace, LLP | 44,996 | $1.18M | 0.00% |
| Laurion Capital Management LP | 35,792 | $937.0K | 0.03% |
| EAM Investors, LLC | 24,585 | $643.6K | 0.12% |
| Cubist Systematic Strategies, LLC | 15,241 | $399.0K | 0.00% |
| Jump Financial, LLC | 14,500 | $379.6K | 0.01% |
| 683 Capital Management, LLC | 13,356 | $349.7K | 0.04% |
| American Century Companies Inc | 10,761 | $281.7K | 0.00% |
| ExodusPoint Capital Management, LP | 10,650 | $279.0K | 0.00% |
| China Universal Asset Management Co., Ltd. | 2,357 | $61.7K | 0.01% |
| Point72 Middle East FZE | 1,040 | $27.2K | 0.00% |
| Advisor Group Holdings, Inc. | 250 | $6.54K | 0.00% |
Sold out (15)
Institutions that held Tourmaline Bio, Inc. at the end of Q3 2023 and filed for Q4 2023 without it.
| Institution | Shares, Q3 2023 | Value, Q3 2023 |
|---|---|---|
| Blackstone Group Inc. | 8,089,315 | $22.7M |
| Ra Capital Management, L.P. | 2,403,238 | $6.75M |
| Walleye Capital LLC | 262,469 | $737.5K |
| Acuitas Investments, LLC | 194,547 | $546.7K |
| Citadel Advisors LLC | 114,482 | $321.7K |
| State Street Corp | 65,448 | $183.9K |
| Man Group plc | – | $141.5K |
| Marquette Asset Management, LLC | 40,028 | $112.5K |
| XTX Topco Ltd | 21,651 | $60.8K |
| Bank of New York Mellon Corp | 20,689 | $58.1K |
| Bailard, Inc. | 14,773 | $41.5K |
| Charles Schwab Investment Management Inc | 13,707 | $38.5K |
| Bank of Montreal | 12,500 | $34.9K |
| The PNC Financial Services Group, Inc. | 1,925 | $5.41K |
| UBS Group AG | 139 | $391 |
Not filed for Q4 2023 yet (1)
Institutions that held Tourmaline Bio, Inc. at the end of Q3 2023 and haven't filed a 13F for Q4 2023. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q3 2023 | Value, Q3 2023 |
|---|---|---|
| Freedom Wealth Alliance, LLC | 16,145 | $45.4K |