Tectonic Therapeutic Ownership | Who Owns Tectonic Therapeutic?

Tectonic Therapeutic Ownership Summary

Tectonic Therapeutic is owned by 10.31% institutional investors, 38.44% insiders, and 51.24% retail investors. Fmr is the largest institutional shareholder, holding 15.00% of TECX shares.

TECX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Tectonic Therapeutic	10.31%	38.44%	51.24%
Sector	Healthcare Stocks	232.64%	10.66%	-143.30%
Industry	Biotech Stocks	382.13%	10.41%	-292.54%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Fmr	2.81M	15.00%	$44.04M
Abrdn	1.14M	6.10%	$23.82M
Blackrock funding, inc. /de	854.36K	4.57%	$17.82M
Braidwell lp	736.87K	3.94%	$11.56M
Farallon capital management	640.00K	3.42%	$10.04M
Vanguard group	599.90K	3.21%	$12.51M
5am venture management	511.66K	2.73%	$8.03M
Point72 asset management	421.75K	2.25%	$6.62M
Bollard group	302.95K	1.62%	$4.75M
Geode capital management	263.56K	1.41%	$5.50M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
5am venture management	511.66K	2.94%	$8.03M
Superstring capital management lp	119.29K	1.84%	$1.87M
Ally bridge group (ny)	138.59K	1.32%	$2.17M
Prosight management, lp	235.00K	1.01%	$4.90M
Knott david m jr	74.00K	0.71%	$1.54M
Sectoral asset management	42.26K	0.71%	$881.44K
Aldebaran capital	37.35K	0.70%	$779.18K
Stempoint capital lp	189.00K	0.59%	$2.97M
Tfg asset management gp	243.73K	0.51%	$3.82M
Pale fire capital se	259.73K	0.45%	$4.08M

Top Buyers

Holder	Shares	% Assets	Change
Abrdn	1.14M	0.04%	785.65K
Braidwell lp	736.87K	0.34%	736.87K
Pale fire capital se	259.73K	0.45%	259.73K
Kennedy capital management	208.78K	0.07%	208.78K
First light asset management	202.39K	0.30%	202.39K

Top Sellers

Holder	Shares	% Assets	Change
Deep track capital, lp	-	-	-1.40M
Vida ventures advisors	-	-	-1.03M
Ecor1 capital	-	-	-935.12K
Paradigm biocapital advisors lp	-	-	-485.11K
Farallon capital management	640.00K	0.04%	-213.05K

New Positions

Holder	Shares	% Assets	Change	Value
Braidwell lp	736.87K	0.34%	736.87K	$11.56M
Pale fire capital se	259.73K	0.45%	259.73K	$4.08M
Kennedy capital management	208.78K	0.07%	208.78K	$3.28M
First light asset management	202.39K	0.30%	202.39K	$3.18M
Sphera funds management	115.91K	0.38%	115.91K	$1.82M

Sold Out

Holder	Change
Sbi securities	-1.00
Srs capital advisors	-15.00
Rise advisors	-28.00
Nordwand advisors	-1.50K
Virtus etf advisers	-1.53K

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	25	-75.49%	1,929,475	-84.06%	10	0.25%	14	-76.27%	6	-71.43%
Sep 30, 2025	24	-70.73%	1,119,638	-90.76%	5	0.14%	11	-78.85%	5	-61.54%
Jun 30, 2025	80	6.67%	12,108,929	23.80%	64	1.99%	53	-7.02%	13	18.18%
Mar 31, 2025	76	10.14%	11,027,607	43.97%	64	2.38%	57	26.67%	12	-20.00%
Dec 31, 2024	70	34.62%	7,686,866	7.12%	52	2.20%	46	53.33%	15	66.67%

Recent Insider Transactions

Date	Name	Role	Activity	Value
Apr 01, 2026	Ruddy Marcella K.	Chief Medical Officer	Sell	$31.05K
Mar 06, 2026	Ruddy Marcella K.	Chief Medical Officer	Sell	$300.00K
Mar 06, 2026	McNamara Peter	Chief Scientific Officer	Sell	$181.41K
Mar 06, 2026	McNamara Peter	Chief Scientific Officer	Sell	$7.53K
Mar 04, 2026	McNamara Peter	Chief Scientific Officer	Sell	$41.25K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	1
2026 Q1	3	5
2025 Q4	-	-
2025 Q3	-	-
2025 Q2	10	1

TECX Ownership FAQ

Who Owns Tectonic Therapeutic?

Tectonic Therapeutic shareholders are primarily institutional investors at 10.31%, followed by 38.44% insiders and 51.25% retail investors. The average institutional ownership in Tectonic Therapeutic's industry, Biotech Stocks , is 382.13%, which Tectonic Therapeutic falls below.

Who owns the most shares of Tectonic Therapeutic?

Tectonic Therapeutic’s largest shareholders are Fmr (2.81M shares, 15.00%), Abrdn (1.14M shares, 6.10%), and Blackrock funding, inc. /de (854.36K shares, 4.57%). Together, they hold 25.67% of Tectonic Therapeutic’s total shares outstanding.

Does Blackrock own Tectonic Therapeutic?

BlackRock is not among the top 10 institutional shareholders of Tectonic Therapeutic.

Who is Tectonic Therapeutic’s biggest shareholder by percentage of total assets invested?

5am venture management is Tectonic Therapeutic’s biggest shareholder by percentage of total assets invested, with 2.94% of its assets in 511.66K Tectonic Therapeutic shares, valued at 8.03M$.

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