Companies / OS Therapies Inc
OS Therapies Inc
NYSE: OSTXCIK 1795091ROCKVILLE, MD
Financials
Ownership
44.5M shares outstanding · as of May 14, 2026
Ownership
| Institutions | 4.58% | 2,038,535 |
| Public float | 95.42% | 42,499,571 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 8
View all →| Insider | % of shares | Shares |
|---|---|---|
Acevedo Christopher P.Chief Financial Officer | — | — |
Ciccio JohnDirector | — | — |
Galzahr KarimFormerDirector | — | — |
Jarry Olivier RogerDirector | — | — |
McKean-Dieser Avril SuzetteDirector | — | — |
Petit RobertSee Remarks | — | — |
Romness Paul A.CEOPresident and CEO · Director | — | — |
Search Theodore F.Director | — | — |
Institutional holders 27
View all →| Holder | Value | % of shares |
|---|---|---|
| $756.6K | 1.21% | |
| $560.0K | 0.90% | |
| $460.7K | 0.54% | |
| $394.9K | 0.63% | |
| $228.2K | 0.27% | |
| $153.9K | 0.25% | |
| $99.8K | 0.16% | |
| $45.1K | 0.07% | |
| $43.1K | 0.07% | |
| $38.8K | 0.06% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | Common Stock | $344.0K | +181K +294.76% | 242,479 0.54% of shares | low |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | Exit | Common Stock | $-153.9K | -110K -100.00% | 0 | low |
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common Stock | $117.0K | +62K +105.30% | 120,100 0.27% of shares | low |
| Q1 2026 as of | Two Sigma Investments, LP 13F manager | Trim | Common Stock | $-86.2K | -61K -69.86% | 26,380 0.06% of shares | low |
| Q1 2026 as of | Geode Capital Management, LLC 13F manager | Add | Common Stock | $47.9K | +34K +13.82% | 280,045 0.63% of shares | low |
| Q1 2026 as of | Sanders Morris Harris LLC 13F manager | New | Common Stock | $45.1K | +32K | 32,000 0.07% of shares | low |
| Q1 2026 as of | Millennium Management LLC 13F manager | Exit | Common Stock | $-43.1K | -31K -100.00% | 0 | low |
| Q2 2026 as of | Quadrature Capital Ltd 13F manager | New | Common Stock | $29.8K | +16K | 15,662 0.04% of shares | low |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| OSTX | Common Stock | 68764Y207 |