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OSTX OS THERAPIES INCORPORATED

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COM NEW (common), issuer CIK 1795091

25 managers (25 13F filers) reported a position in OSTX shares at 2025-09-30, 1,563,221 shares in all. 13 filers opened a position and 1 filer sold out during the quarter.

Managers
25
13F filers
25
New
13
Added
5
Reduced
2
Sold out
1
Shares held by filers
1,563,221

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
CM Management, LLC400,000$784K0.65%+25,00013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP198,552$389K<0.01%new13F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC188,263$369K<0.01%new13F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC187,688$368K<0.01%new13F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC93,574$183K<0.01%new13F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP86,247$169K<0.01%new13F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC75,801$149K0.01%+54,26913F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP56,263$110K<0.01%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP50,300$98.6K<0.01%new13F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.48,163$94.4K<0.01%+17,88213F-HRTimelineGroup
INGALLS & SNYDER LLC36,676$72K<0.01%013F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC25,000$49K<0.01%013F-HRTimeline
Ground Swell Capital, LLC20,462$40.1K0.09%new13F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV20,440$40.1K<0.01%new13F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP15,000$29.4K<0.01%013F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…14,961$29.3K<0.01%new13F-HRTimelineGroup
SANDERS MORRIS HARRIS LLC12,000$23.5K<0.01%new13F-HRTimeline
TWO SIGMA SECURITIES, LLC10,237$20.1K<0.01%new13F-HRTimeline
Full Sail Capital, LLC10,220$20K<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP7,867$16.1K<0.01%new13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…4,167$8.17K<0.01%+1,61713F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY1,000$1.96K<0.01%+26013F-HR/ATimelineGroup
UBS Group AGin group UBS Group AG227$445<0.01%-52,59013F-HRTimelineGroup
ARMSTRONG ADVISORY GROUP, INC100$196<0.01%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO13$25<0.01%-30913F-HR/ATimelineGroup