NYSE American · OSTXHealthcarePharmaceuticals

OS Therapies Incorporated (OSTX)

$1.15−0.86%
Close Nov 4, 2026 · split-adjusted
Nov 4, 2026$1.15▼ 35.39% in range
Nov 4, 2025Low $1.15 · High $2.24Nov 4, 2026
What changed · written from our data
As of Nov 4, 2026

OS Therapies Incorporated closed at $1.15 on Nov 4, down 0.86%, within 0.0% of its 52-week closing low. Volume of 503.3K shares was 1.13× its 20-day average (close to normal).

Split-adjusted performance: -22.8% over one month, -33.5% over six months, -38.5% over one year.

Short interest was 2.8M shares at the Oct 15 settlement, up 8.7% from the prior report (6.8% of float, 2.9 days to cover).

Market cap$53.8M46.8M shares
Revenue · quarter$0.00—
Diluted EPS$-0.20—
P/E · TTM—
Net margin—
Dividend yieldNone
52-week range1.15 – 2.24−48.7% from high
Volume503.3K1.13× 20-day avg
Volatility · 60d58.7%Annualised
Short % of float6.8%2.9 days to cover
Net cash$105.0KCash $205.0K
Next earnings—Not scheduled
Split-adjusted performance
1W −8.0%1M −22.8%3M −29.4%6M −33.5%YTD −17.9%1Y −38.5%3Y —5Y —

Earnings reactions

History →

No reported quarters with price history yet.

Rank within Pharmaceuticals

Percentile among 420 companies (100 = best)

6-month momentum40
Revenue growth—
Net margin—
Value (low P/E)—
Size31

Industry medians: 6-month return −25.5%, revenue growth +6.2%, net margin −33.8%, P/E 16.1×.

Short interest

Details →
Shares short2.8M+8.7% vs prior
Days to cover2.9Settled Oct 15
% of float6.8%
Short vol. 10d47.6%of daily volume

Closest peers by size in Pharmaceuticals

CompanyPriceToday6MRev. growthNet marginP/EMkt cap
OSTXOS Therapies Incorporated$1.15−0.86%−33.5%———$53.8M
TLPHTalphera$1.05+0.96%+20.7%———$54.5MCompare
HOWLWerewolf Therapeutics$1.09+1.87%+67.6%—17.5%—$53.0MCompare
PLRXPliant Therapeutics$0.8518−1.03%−30.7%———$52.7MCompare
BOLDBoundless Bio$2.40+0.84%+51.9%———$55.5MCompare
ONCYOncolytics Biotech$0.4248+8.92%−53.8%———$55.7MCompare
RFLRafael Holdings$1.07−0.93%−14.4%−30.3%−3760.7%—$55.8MCompare
ANVSAnnovis Bio$1.21+11.01%−49.6%———$51.6MCompare
IBIOiBio$0.8000−2.85%−54.8%−100.0%——$51.4MCompare

News about OS Therapies Incorporated

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No recent articles focused on OS Therapies Incorporated. 1 articles mention it in passing.

Quick answers

What does OS Therapies Incorporated do?
OS Therapies Inc is a clinical stage biopharmaceutical company focused on the identification, development and commercialization of treatments for Osteosarcoma (OS) and other solid tumors. The company's mission is to address the need for new treatments in cancers of the bone in children and young adults.
What is OSTX's market cap?
$53.83M, based on the Nov 4 close of $1.15.
Does OS Therapies Incorporated pay a dividend?
No regular cash dividend has been paid in the last year.
How much of OSTX is sold short?
2.8M shares, 6.8% of float, as of Oct 15, 2026.
What sector is OSTX in?
Healthcare, in the Pharmaceuticals industry.

About OS Therapies Incorporated

OS Therapies Inc is a clinical stage biopharmaceutical company focused on the identification, development and commercialization of treatments for Osteosarcoma (OS) and other solid tumors. The company's mission is to address the need for new treatments in cancers of the bone in children and young adults. The company has pipeline of product candidates targeting multiple indications for solid cancers including two drug technologies: (i) OST-HER2, an off-the-shelf immunotherapy, which is a type of cancer treatment that helps the immune system fight cancer and OST-tADC which is a tunable drug conjugate (tADC) platform currently in preclinical development. Each tADC contains four main components: ligand, payload cassette adaptor, linker and payload.

HQ: Rockville, MD5 employeesListed Aug 1, 2024ostherapies.com

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology