SEC Form 4
OS Therapies Incorporated (OSTX) insider trading
No open-market OSTX insider purchases or sales were filed in the 12 months to Oct 31, 2026.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $0
- 0 filings · 0 insiders
- Open-market purchases
- $0
- 0 filings
Who traded OSTX, and when
OSTX daily close from Oct 31, 2025 to Oct 30, 2026, between $1.16 and $2.24, last $1.24. No open-market insider purchases or sales were filed in this period.
No open-market insider purchases or sales were filed in the last 12 months.
Open-market trades
0 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| No open-market purchases or sales in the last 12 months. | ||||||
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
| No open-market purchases or sales in the last 12 months. | |||||||
GET /stocks/filings/vX/form-4?tickers=OSTX&filing_date.gte=2025-10-31&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"OSTX"
],
"issuer_cik": "0001795091",
"owner_cik": "0001433316",
"accession_number": "0001213900-26-114604",
"form_type": "4",
"filing_date": "2026-10-30",
"period_of_report": "2026-10-22",
"issuer_name": "OS Therapies Inc",
"issuer_trading_symbol": "OSTX",
"owner_name": "Francis Knuettel II",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Financial Officer",
"security_type": "non_derivative",
"record_type": "holding",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"shares_owned_following_transaction": 20000,
"not_subject_to_section_16": false,
"direct_or_indirect": "I",
"nature_of_ownership": "By Lara Knuettel Revocable Trust",
"footnotes": [
{
"id": "F1",
"description": "The reporting person is the co-trustee of the Lara Knuettel Revocable Trust and may be deemed to beneficially own the shares of common stock held of record by such trust. The reporting person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein."
}
]
},
{
"tickers": [
"OSTX"
],
"issuer_cik": "0001795091",
"owner_cik": "0002042392",
"accession_number": "0001213900-26-114610",
"form_type": "4",
"filing_date": "2026-10-30",
"period_of_report": "2026-10-22",
"issuer_name": "OS Therapies Inc",
"issuer_trading_symbol": "OSTX",
"owner_name": "McKean-Dieser Avril Suzette",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "holding",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"shares_owned_following_transaction": 5000,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has OS Therapies Incorporated's CEO sold stock?
No. Paul A. Romness (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is OSTX’s insider data?
These are OSTX Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
Build with AI
Track OSTX insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for OSTX every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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