OS Therapies Ownership | Who Owns OS Therapies?

OS Therapies Ownership Summary

OS Therapies is owned by 9.91% institutional investors, 23.45% insiders, and 66.64% retail investors. Vanguard group is the largest institutional shareholder, holding 1.69% of OSTX shares.

OSTX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	OS Therapies	9.91%	23.45%	66.64%
Sector	Healthcare Stocks	35.49%	11.78%	52.72%
Industry	Biotech Stocks	34.84%	11.71%	53.45%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	540.42K	1.69%	$756.59K
Susquehanna group, llp	448.74K	1.53%	$632.72K
Cm management	400.00K	1.37%	$564.00K
Ubs group	348.68K	1.19%	$491.64K
Geode capital management	280.05K	0.96%	$394.86K
Howard financial services	245.44K	0.84%	$346.06K
Vanguard fiduciary trust	116.66K	0.40%	$164.50K
State street	91.20K	0.31%	$128.59K
Northern trust	66.05K	0.23%	$93.14K
Blackrock funding, inc. /de	64.77K	0.22%	$91.33K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Cm management	400.00K	0.47%	$564.00K
Howard financial services	245.44K	0.04%	$346.06K
Sanders morris harris	32.00K	0.01%	$45.12K
Ingalls & snyder	36.68K	0.00%	$52.00K
Stratos wealth advisors	13.82K	0.00%	$19.48K
Xtx topco	31.62K	0.00%	$44.59K
Bridgeway capital management	25.00K	0.00%	$35.25K
Beacon pointe advisors	62.51K	0.00%	$88.14K
Tower research capital llc (trc)	4.18K	0.00%	$5.89K
Susquehanna group, llp	448.74K	0.00%	$632.72K

Top Buyers

Holder	Shares	% Assets	Change
Susquehanna group, llp	448.74K	0.00%	448.74K
Vanguard group	540.42K	-	352.16K
Ubs group	348.68K	0.00%	330.52K
Howard financial services	245.44K	0.04%	245.44K
Vanguard fiduciary trust	116.66K	-	116.66K

Top Sellers

Holder	Shares	% Assets	Change
Marshall wace, llp	-	-	-109.95K
Two sigma investments, lp	26.38K	-	-61.16K
Millennium management	-	-	-30.79K
Ground swell capital	-	-	-20.46K
Northern trust	66.05K	-	-5.25K

New Positions

Holder	Shares	% Assets	Change	Value
Howard financial services	245.44K	0.04%	245.44K	$346.06K
Vanguard fiduciary trust	116.66K	-	116.66K	$164.50K
Beacon pointe advisors	62.51K	0.00%	62.51K	$88.14K
Xtx topco	31.62K	0.00%	31.62K	$44.59K
Vanguard global advisers	20.96K	-	20.96K	$29.55K

Sold Out

Holder	Change
Jpmorgan chase	-13.00
Northwestern mutual wealth management	-25.00
Royal bank of canada	-480.00
Ground swell capital	-20.46K
Millennium management	-30.79K

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	29	20.83%	2,897,570	63.22%	9	32.10%	19	35.71%	2	-50.00%
Dec 31, 2025	12	-52.00%	1,377,335	-11.89%	4	18.01%	9	-50.00%	-	-100.00%
Sep 30, 2025	25	92.31%	1,563,221	158.93%	4	84.65%	18	100.00%	2	100.00%
Jun 30, 2025	13	116.67%	603,727	55.09%	2	71.63%	9	125.00%	1	-
Mar 31, 2025	6	20.00%	389,286	168.47%	1	379.49%	4	33.33%	1	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 07, 2025	Auerbach Shalom	-	Sell	$163.92K
Apr 09, 2025	Auerbach Shalom	-	Sell	$67.67K
Apr 10, 2025	Auerbach Shalom	-	Sell	$13.90K
Feb 14, 2025	Auerbach Shalom	-	Sell	$284.30K
Jan 15, 2025	Auerbach Shalom	-	Sell	$112.61K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	-	3
2025 Q1	-	2
2024 Q4	-	-
2024 Q3	-	-
2003 Q2	-	-

OSTX Ownership FAQ

Who Owns OS Therapies?

OS Therapies shareholders are primarily institutional investors at 9.91%, followed by 23.45% insiders and 66.64% retail investors. The average institutional ownership in OS Therapies's industry, Biotech Stocks , is 34.84%, which OS Therapies falls below.

Who owns the most shares of OS Therapies?

OS Therapies’s largest shareholders are Vanguard group (540.42K shares, 1.69%), Susquehanna group, llp (448.74K shares, 1.53%), and Cm management (400K shares, 1.37%). Together, they hold 4.59% of OS Therapies’s total shares outstanding.

Does Blackrock own OS Therapies?

BlackRock is not among the top 10 institutional shareholders of OS Therapies.

Who is OS Therapies’s biggest shareholder by percentage of total assets invested?

Cm management is OS Therapies’s biggest shareholder by percentage of total assets invested, with 0.47% of its assets in 400K OS Therapies shares, valued at 564K$.

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