Massivemarkets

SEC Form 4

CeriBell, Inc. (CBLL) insider trading

In the 12 months to Nov 14, 2026, 9 CBLL insiders reported open-market sales of $23.2M across 52 filings; no open-market purchases were filed.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$23.2M
52 filings · 9 insiders
Open-market purchases
$0
0 filings
Pre-arranged sales (10b5-1)
48 of 52
$18.5M of $23.2M sold (80%)

Who traded CBLL, and when

  • Sale
  • Sale, pre-arranged (10b5-1)

CBLL daily close from Nov 14, 2025 to Nov 13, 2026, between $12.89 and $28.27, last $26.14. 52 sale and 0 purchase filings by 9 insiders, marked at their filing dates. Xingjuan Chao, President and CEO: sold $10.8M across 14 filings, first filed Nov 25, 2025, last Sep 17, 2026. Jon Winkelried, Other: sold $4.1M across 1 filing, first filed Jun 30, 2026, last Jun 30, 2026. Josef Parvizi, Director: sold $2.1M across 5 filings, first filed Dec 10, 2025, last Feb 23, 2026. Scott Blumberg, Chief Financial Officer: sold $1.7M across 4 filings, first filed Dec 29, 2025, last Sep 17, 2026. Raymond Woo, Chief Technology Officer: sold $1.6M across 9 filings, first filed Dec 3, 2025, last Nov 4, 2026. William W. Burke, Director: sold $1.2M across 3 filings, first filed Dec 11, 2025, last Nov 13, 2026. 3 others: sold $1.7M across 16 filings, first filed Dec 4, 2025, last Nov 10, 2026.

Largest mark · tap a row for others

Jon Winkelried · Other

Sale $4,071,705

202,368 shares at $20.12 avg

Filed Jun 30, 2026 · traded Jun 26

Close on filing date $19.45

CBLL daily closelast $26.14

Xingjuan Chao · President and CEO

$10.8M sold

Jon Winkelried · Other

$4.1M sold

Josef Parvizi · Director

$2.1M sold

Scott Blumberg · Chief Financial Officer

$1.7M sold

Raymond Woo · Chief Technology Officer

$1.6M sold

William W. Burke · Director

$1.2M sold

3 others

$1.7M sold
One row per insider, smaller filers combined; marks sit at the SEC filing date, sized by dollar value.

Open-market trades

52 filings in the last 12 months
Other insider activity (not market trades) · 107 records
  • Option exercises74 records
  • Tax withholding5 records
  • Tax withholding (sold to cover)15 records
  • Grants and awards13 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

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.
Pre-arranged (10b5-1)
The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Counted once
When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.

Frequently asked questions

Has CeriBell, Inc.'s CEO sold stock?

Yes. Xingjuan Chao (CEO) sold 546,000 shares ($10.8M) between Nov 2025 and Sep 2026, all under a pre-arranged 10b5-1 plan.

How current is CBLL’s insider data?

These are CBLL 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 CBLL 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 CBLL 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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