TRML

Tourmaline Bio, Inc.

Biological Products, (No Diagnostic Substances)<br>Emerging growth company

Total Trades

9

Buys

9

Sells

0

Largest Trade

$1M+

Insiders

5

Institutional Funds

23

Inst. Value

$1M+

Activist Filings

25

Insider Trades

InsiderTitleTypeValueSharesPriceDate
Kulkarni Sandeep ChidambarCEOBUY$15K–$50K2K$14.85Aug 22, 2024
Kulkarni Sandeep ChidambarCEOBUY$50K–$100K5K$13.79Aug 20, 2024
MCDADE MARKDirectorBUY$1M+100K$32.50Jan 31, 2024
Kulkarni Sandeep ChidambarCEOBUY$50K–$100K4K$16.99Nov 20, 2023
Thiara ParvinderDirectorBUY$15K–$50K1K$17.31Nov 20, 2023
Castelein CaleyDirectorBUY$100K–$500K20K$14.03Oct 27, 2023
Kulkarni Sandeep ChidambarCEOBUY$100K–$500K10K$11.49Oct 26, 2023
KANTOFF AARONDirectorBUY$50K–$100K8K$11.86Oct 26, 2023
Thiara ParvinderDirectorBUY$50K–$100K7K$11.08Oct 26, 2023
🔓Seeing ranges? Sign in for exact trade values — free forever

Institutional Ownership

13F filings as of Sep 30, 2025 · 23 funds holding

Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

RA Capital Management, L.P.

SC 13G/A · Nov 14, 2025

0.0%

0 shares

BlackRock, Inc.

SC 13G/A · Oct 17, 2025

5.5%

1.4M shares

QVT Financial LP

SC 13G/A · Aug 14, 2025

8.4%

2.2M shares

Avoro Capital Advisors LLC

SC 13G/A · Aug 14, 2025

9.9%

2.6M shares

QVT Financial LP

SC 13G · May 15, 2025

5.7%

1.5M shares

Blue Owl Capital Holdings LP

SC 13G/A · Feb 14, 2025

4.2%

1.1M shares

RA Capital Management, L.P.

SC 13G/A · Nov 14, 2024

9.9%

2.5M shares

Blue Owl Capital Holdings LP

SC 13G/A · Nov 14, 2024

6.0%

1.5M shares

Viking Global Investors LP

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Deep Track Capital, LP

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Avoro Capital Advisors LLC

SC 13G · Nov 14, 2024

8.7%

2.2M shares

BlackRock, Inc.

SC 13G · Nov 8, 2024

6.8%

1.8M shares

BlackRock, Inc.

SC 13G · Oct 22, 2024

6.8%

1.8M shares

RA Capital Management, L.P.

SC 13G · Jun 4, 2024

8.0%

2.0M shares

PFIZER INC.

SC 13G/A · Mar 15, 2024

5.0%

1.3M shares

Hydra LLC

SC 13G/A · Feb 15, 2024

6.6%

1.7M shares

Blue Owl Capital Holdings LP

SC 13G · Feb 15, 2024

6.5%

1.3M shares

RA Capital Management, L.P.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Citadel Advisors LLC

SC 13G/A · Feb 14, 2024

0.0%

6 shares

Clarus Lifesciences III, L.P.

SC 13G/A · Feb 9, 2024

0.0%

0 shares

Hydra LLC

SC 13G · Nov 6, 2023

5.9%

1.2M shares

1.6%

32.2M shares

Qiming U.S. Healthcare Fund, L.P.

SC 13D/A · Oct 30, 2023

0.9%

183K shares

Deep Track Capital, LP

SC 13G · Oct 27, 2023

8.9%

1.8M shares

PFIZER INC.

SC 13G · Oct 27, 2023

6.3%

1.3M shares