Third Harmonic Bio Ownership | Who Owns Third Harmonic Bio?

Third Harmonic Bio Ownership Summary

Third Harmonic Bio is owned by 86.14% institutional investors, 9.11% insiders, and 4.75% retail investors. Atlas venture life science advisors is the largest institutional shareholder, holding 25.18% of THRD shares. T. Rowe Price Small-Cap Value is the top mutual fund, with 1.94% of its assets in Third Harmonic Bio shares.

THRD Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Third Harmonic Bio	86.14%	9.11%	4.75%
Sector	Healthcare Stocks	279.19%	10.62%	-189.81%
Industry	Biotech Stocks	63.96%	10.74%	25.30%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Atlas venture life science advisors	10.40M	25.18%	$107.04M
Orbimed advisors	5.78M	13.99%	$59.47M
Fmr	2.54M	6.14%	$26.10M
Tcg crossover management	2.51M	6.06%	$25.78M
Bvf inc/il	2.37M	5.74%	$24.42M
Boxer capital	2.00M	4.93%	$26.00M
Blackrock funding, inc. /de	1.48M	3.58%	$15.21M
Blackrock	1.43M	3.55%	$18.56M
Vanguard group	1.03M	2.49%	$10.60M
Millennium management	640.08K	1.55%	$6.59M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Atlas venture life science advisors	10.40M	13.06%	$107.04M
Tcg crossover management	2.51M	2.52%	$25.78M
Takeda pharmaceutical	36.84K	1.43%	$379.03K
Boxer capital	2.00M	1.37%	$26.00M
Orbimed advisors	5.78M	1.23%	$59.47M
Bvf inc/il	2.37M	0.83%	$24.42M
Nantahala capital management	501.00K	0.22%	$5.16M
Ikarian capital	100.00K	0.14%	$1.03M
Tang capital management	150.00K	0.10%	$1.54M
Kingswood wealth advisors	31.10K	0.02%	$320.02K

Top Buyers

Holder	Shares	% Assets	Change
Fmr	2.54M	0.00%	2.23M
Millennium management	640.08K	0.00%	558.62K
Nantahala capital management	501.00K	0.22%	501.00K
Tang capital management	150.00K	0.10%	150.00K
Vanguard group	1.03M	0.00%	138.34K

Top Sellers

Holder	Shares	% Assets	Change
General atlantic	-	-	-3.37M
Ecor1 capital	-	-	-3.18M
T. rowe price investment management	-	-	-2.93M
Bvf inc/il	2.37M	0.83%	-1.99M
Deerfield management company, l.p. (series c)	-	-	-1.02M

New Positions

Holder	Shares	% Assets	Change	Value
Nantahala capital management	501.00K	0.22%	501.00K	$5.16M
Tang capital management	150.00K	0.10%	150.00K	$1.54M
Ikarian capital	100.00K	0.14%	100.00K	$1.03M
Takeda pharmaceutical	36.84K	1.43%	36.84K	$379.03K
Manufacturers life insurance company, the	30.21K	0.00%	30.21K	$310.87K

Sold Out

Holder	Change
Capital performance advisors llp	-25.00
Ronald blue trust	-58.00
Gamma investing	-97.00
Creative planning	-130.00
Simplex trading	-153.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2025	99	2.06%	38,690,688	-13.85%	86	0.73%	67	8.06%	13	-31.58%
Dec 31, 2024	94	10.59%	44,487,886	1.04%	107	0.95%	59	18.00%	19	5.56%
Sep 30, 2024	85	13.33%	44,027,892	9.42%	106	1.08%	50	8.70%	18	20.00%
Jun 30, 2024	75	8.70%	40,236,421	6.25%	99	1.12%	46	35.29%	15	-16.67%
Mar 31, 2024	69	13.11%	37,870,562	-0.13%	94	1.04%	34	-15.00%	18	38.46%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
T. Rowe Price Small-Cap Value	872.50K	1.94%	-634.00
Vanguard Total Stock Mkt Idx Inv	719.66K	1.60%	83.55K
Fidelity Select Health Care	680.00K	1.52%	-
iShares Russell 2000 ETF	555.34K	1.23%	273.00
Fidelity Small Cap Growth	548.60K	1.22%	-
T. Rowe Price US Small-Cap Core Equity	544.31K	1.21%	-20.31K
Vanguard US Total Market Shares ETF	517.12K	1.15%	-
T. Rowe Price U.S. SC Value Eq Tr-Z	483.81K	1.07%	40.76K
T. Rowe Price U.S. SC Value Eq Tr-D	483.81K	1.07%	40.76K
Fidelity Advisor Health Care I	400.00K	0.89%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 08, 2024	Conner Edward R.	Chief Medical Officer	Sell	$31.75K
Oct 29, 2024	BVF PARTNERS L P/IL	See Explanation of Responses	Sell	$5.68M
Oct 29, 2024	BVF PARTNERS L P/IL	See Explanation of Responses	Sell	$7.70M
Oct 29, 2024	BVF PARTNERS L P/IL	See Explanation of Responses	Sell	$924.02K
Oct 28, 2024	Conner Edward R.	Chief Medical Officer	Sell	$40.09K

Insider Transactions Trends

Date	Buy	Sell
2025 Q1	-	-
2024 Q4	-	5
2024 Q3	-	3
2024 Q2	-	7
2024 Q1	-	-

THRD Ownership FAQ

Who Owns Third Harmonic Bio?

Third Harmonic Bio shareholders are primarily institutional investors at 86.14%, followed by 9.11% insiders and 4.75% retail investors. The average institutional ownership in Third Harmonic Bio's industry, Biotech Stocks , is 63.96%, which Third Harmonic Bio exceeds.

Who owns the most shares of Third Harmonic Bio?

Third Harmonic Bio’s largest shareholders are Atlas venture life science advisors (10.4M shares, 25.18%), Orbimed advisors (5.78M shares, 13.99%), and Fmr (2.54M shares, 6.14%). Together, they hold 45.30% of Third Harmonic Bio’s total shares outstanding.

Does Blackrock own Third Harmonic Bio?

Yes, BlackRock owns 3.55% of Third Harmonic Bio, totaling 1.43M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 18.56M$. In the last quarter, BlackRock increased its holdings by 65.78K shares, a 4.83% change.

Who is Third Harmonic Bio’s biggest shareholder by percentage of total assets invested?

Atlas venture life science advisors is Third Harmonic Bio’s biggest shareholder by percentage of total assets invested, with 13.06% of its assets in 10.4M Third Harmonic Bio shares, valued at 107.04M$.

Who is the top mutual fund holder of Third Harmonic Bio shares?

T. Rowe Price Small-Cap Value is the top mutual fund holder of Third Harmonic Bio shares, with 1.94% of its total shares outstanding invested in 872.5K Third Harmonic Bio shares.

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