EcoR1 Capital’s Third Harmonic Bio THRD Stock Holding History

EcoR1 Capital’s Portfolio THRD Stock Details THRD Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q1	–	Sell	-3,182,444	Closed	-$32.7M	–	64
2024 Q4	$32.7M	Hold	3,182,444	–	–	1.31%	18
2024 Q3	$43.1M	Hold	3,182,444	–	–	1.48%	18
2024 Q2	$41.4M	Hold	3,182,444	–	–	1.27%	21
2024 Q1	$30M	Hold	3,182,444	–	–	0.76%	25
2023 Q4	$34.9M	Buy	3,182,444 +200,000	+7%	+$1.58M	0.91%	21
2023 Q3	$19.1M	Buy	2,982,444 +893,664	+43%	+$5.46M	0.65%	30
2023 Q2	$10M	Buy	2,088,780 +286,658	+16%	+$1.36M	0.26%	33
2023 Q1	$7.42M	Buy	+1,802,122	New	+$7.65M	0.24%	35

Other funds holding THRD

Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return

OrbiMed New York $4.59B AUM 125.28% 1-Year Est. Return

BML Capital Management Zionsville, Indiana $155M AUM 129.82% 1-Year Est. Return

Nantahala Capital Management New Canaan, Connecticut $1.6B AUM 121.58% 1-Year Est. Return

TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return

BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return

BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Tang Capital Management San Diego, California $1.97B AUM 125.1% 1-Year Est. Return

Newtyn Management New York $936M AUM 27.23% 1-Year Est. Return