Cabaletta Bio Ownership | Who Owns Cabaletta Bio?

Cabaletta Bio Ownership Summary

Cabaletta Bio is owned by 33.29% institutional investors, 1.57% insiders, and 65.14% retail investors. Bain capital life sciences investors is the largest institutional shareholder, holding 15.64% of CABA shares. T. Rowe Price Small-Cap Value is the top mutual fund, with 5.37% of its assets in Cabaletta Bio shares.

CABA Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Cabaletta Bio	33.29%	1.57%	65.14%
Sector	Healthcare Stocks	232.20%	10.74%	-142.94%
Industry	Biotech Stocks	382.11%	10.55%	-292.66%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Bain capital life sciences investors	9.68M	15.64%	$22.64M
Adage capital partners gp	8.83M	14.27%	$20.66M
T. rowe price investment management	8.36M	13.51%	$19.57M
Blackrock	4.76M	9.65%	$35.58M
Jennison associates	8.91M	8.71%	$19.50M
Cormorant asset management, lp	5.00M	8.08%	$11.70M
Vanguard group	4.42M	4.32%	$9.68M
Woodline partners lp	2.14M	3.45%	$5.00M
Heights capital management	2.08M	3.37%	$4.88M
Superstring capital management lp	1.54M	2.50%	$3.61M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Superstring capital management lp	1.54M	3.56%	$3.61M
Bain capital life sciences investors	9.68M	1.50%	$22.64M
Heights capital management	2.08M	1.34%	$4.88M
Cormorant asset management, lp	5.00M	0.81%	$11.70M
Opaleye management	808.88K	0.27%	$1.89M
Almitas capital	387.49K	0.21%	$906.73K
Burkehill global management, lp	700.00K	0.09%	$1.64M
Atika capital management	1.00K	0.07%	$748.00K
Gsa capital partners llp	303.99K	0.06%	$666.00K
Xtx topco	284.30K	0.03%	$665.26K

Top Buyers

Holder	Shares	% Assets	Change
T. rowe price investment management	8.36M	0.01%	1.57M
Marshall wace, llp	1.33M	0.00%	1.14M
Woodline partners lp	2.14M	0.02%	916.88K
Opaleye management	808.88K	0.27%	808.88K
Blackrock funding, inc. /de	2.33M	0.00%	707.60K

Top Sellers

Holder	Shares	% Assets	Change
Alkeon capital management	-	-	-2.62M
Anson funds management lp	-	-	-1.82M
Vr adviser	-	-	-1.56M
Sofinnova investments	-	-	-1.53M
Alyeska investment group	-	-	-1.30M

New Positions

Holder	Shares	% Assets	Change	Value
Opaleye management	808.88K	0.27%	808.88K	$1.89M
Ensign peak advisors	550.00K	0.00%	550.00K	$1.20M
Dimensional fund advisors lp	452.04K	0.00%	452.04K	$989.97K
Gsa capital partners llp	303.99K	0.06%	303.99K	$666.00K
Letko, brosseau & associates	90.47K	0.00%	90.47K	$198.14K

Sold Out

Holder	Change
Nelson, van denburg & campbell wealth management group	-7.00
Gamma investing	-12.00
True wealth design	-17.00
Quantbot technologies lp	-19.00
Eversource wealth advisors	-41.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	68	-15.00%	34,040,867	-50.82%	33	0.73%	45	18.42%	11	-62.07%
Sep 30, 2025	22	-75.56%	16,510,649	-77.31%	26	0.19%	12	-76.47%	7	-73.08%
Jun 30, 2025	89	-6.32%	72,682,277	102.25%	117	2.23%	50	19.05%	27	-20.59%
Mar 31, 2025	96	-12.73%	36,286,368	-5.67%	73	1.19%	42	-35.38%	35	45.83%
Dec 31, 2024	36	-70.25%	10,990,024	-77.13%	22	0.23%	22	-66.15%	7	-78.79%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
T. Rowe Price Small-Cap Value	5.17M	5.37%	-3.65K
PGIM Jennison Health Sciences Z	3.52M	3.65%	-
Jennison Health Sciences Equity	3.52M	3.65%	-
T. Rowe Price U.S. SC Value Eq Tr-D	3.29M	3.42%	497.89K
Vanguard Total Stock Mkt Idx Inv	2.83M	2.94%	104.16K
Vanguard US Total Market Shares ETF	1.40M	2.76%	-
Jennison SMid Cap Core Equity	1.29M	2.63%	-
PGIM Jennison Small Company A	1.29M	2.63%	-
iShares Russell 2000 ETF	1.17M	2.31%	-
Alger Small Cap Focus Composite	1.08M	2.12%	-561.71K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jan 21, 2026	Chang David J.	Chief Medical Officer	Buy	$19.89K
Jan 21, 2026	Binder Gwendolyn	President, Science & Tech.	Buy	$24.76K
Jan 21, 2026	Tomasello Shawn	-	Buy	$50.32K
Jan 21, 2026	Gavel Steve	Chief Commercial Officer	Buy	$50.22K
Jan 21, 2026	Bollard Catherine	-	Buy	$9.98K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	8	-
2025 Q4	-	-
2025 Q2	-	-
2025 Q1	-	-
2024 Q2	-	-

CABA Ownership FAQ

Who Owns Cabaletta Bio?

Cabaletta Bio shareholders are primarily institutional investors at 33.29%, followed by 1.57% insiders and 65.14% retail investors. The average institutional ownership in Cabaletta Bio's industry, Biotech Stocks , is 382.11%, which Cabaletta Bio falls below.

Who owns the most shares of Cabaletta Bio?

Cabaletta Bio’s largest shareholders are Bain capital life sciences investors (9.68M shares, 15.64%), Adage capital partners gp (8.83M shares, 14.27%), and T. rowe price investment management (8.36M shares, 13.51%). Together, they hold 43.42% of Cabaletta Bio’s total shares outstanding.

Does Blackrock own Cabaletta Bio?

Yes, BlackRock owns 9.65% of Cabaletta Bio, totaling 4.76M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 35.58M$. In the last quarter, BlackRock increased its holdings by 699.11K shares, a 17.23% change.

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

Superstring capital management lp is Cabaletta Bio’s biggest shareholder by percentage of total assets invested, with 3.56% of its assets in 1.54M Cabaletta Bio shares, valued at 3.61M$.

Who is the top mutual fund holder of Cabaletta Bio shares?

T. Rowe Price Small-Cap Value is the top mutual fund holder of Cabaletta Bio shares, with 5.37% of its total shares outstanding invested in 5.17M Cabaletta Bio shares.

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