# CeriBell, Inc. (CBLL) insider trading

> In the 12 months to Nov 13, 2026, 9 CBLL insiders reported open-market sales of $22.9M across 52 filings; no open-market purchases were filed.

Canonical: https://massive.com/quote/cbll/insider-trading
Latest filing: 2026-11-10 (last 12 months; source: SEC EDGAR)
Source: Massive (https://massive.com/docs/llms.txt)

## Summary

| Measure | Value | Detail |
| --- | --- | --- |
| Open-market sales | $22.9M | 52 filings · 9 insiders |
| Open-market purchases | $0 | 0 filings |
| Pre-arranged sales (10b5-1) | 48 of 52 | $18.1M of $22.9M sold (79%) |

## Open-market trades by insider

| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
| --- | --- | --- | --- | --- | --- | --- |
| Xingjuan Chao | President and CEO | $10.8M | — | 14 | 100% of sales | 2026-09-17 |
| Jon Winkelried | Other | $4.1M | — | 1 | — | 2026-06-30 |
| Josef Parvizi | Director | $2.1M | — | 5 | 100% of sales | 2026-02-23 |
| Raymond Woo | Chief Technology Officer | $1.7M | — | 10 | 100% of sales | 2026-11-04 |
| Scott Blumberg | Chief Financial Officer | $1.7M | — | 4 | 100% of sales | 2026-09-17 |
| William W. Burke | Director | $764.5K | — | 2 | 100% of sales | 2026-07-02 |
| Joseph Michael Taylor | Director | $685.3K | — | 3 | — | 2026-11-10 |
| David Foehr | Senior VP, Finance and PAO | $683.3K | — | 8 | 100% of sales | 2026-09-10 |
| Rebecca B. Robertson | Director | $314.5K | — | 5 | 100% of sales | 2026-03-05 |

## Open-market trades by filing

52 filings in the last 12 months, newest first.

| Filed | Traded | Insider | Role | Type | Shares | Avg price | Value | Held after | Filing |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2026-11-10 | 2026-11-09 | Joseph Michael Taylor | Director | Sale | 10,200 | $27.22 | $277.6K | 38,278 | — |
| 2026-11-04 | 2026-11-02 | Raymond Woo | Chief Technology Officer | Sale (10b5-1) | 4,887 | $26.96 | $131.8K | 203,118 | — |
| 2026-10-02 | 2026-10-01 | Raymond Woo | Chief Technology Officer | Sale (10b5-1) | 4,887 | $24.38 | $119.1K | 203,118 | — |
| 2026-09-17 | 2026-09-15 | Scott Blumberg | Chief Financial Officer | Sale (10b5-1) | 846 | $25.00 | $21.2K | 146,600 | — |
| 2026-09-17 | 2026-09-15 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 20,846 | $25.03 | $521.8K | 746,345 | — |
| 2026-09-10 | 2026-09-08 | Raymond Woo | Chief Technology Officer | Sale (10b5-1) | 4,887 | $24.33 | $118.9K | 203,118 | — |
| 2026-09-10 | 2026-09-08 | David Foehr | Senior VP, Finance and PAO | Sale (10b5-1) | 9,255 | $24.25 | $224.5K | 34,144 | — |
| 2026-09-04 | 2026-09-02 | Scott Blumberg | Chief Financial Officer | Sale (10b5-1) | 652 | $25.00 | $16.3K | 146,600 | — |
| 2026-09-04 | 2026-09-02 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 39,540 | $24.61 | $973.1K | 767,191 | — |
| 2026-08-25 | 2026-08-24 | David Foehr | Senior VP, Finance and PAO | Sale (10b5-1) | 859 | $23.95 | $20.6K | 35,899 | — |
| 2026-08-20 | 2026-08-18 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 33,614 | $25.03 | $841.3K | 787,799 | — |
| 2026-08-20 | 2026-08-18 | Scott Blumberg | Chief Financial Officer | Sale (10b5-1) | 34,502 | $25.03 | $863.6K | 148,121 | — |
| 2026-08-14 | 2026-08-13 | Joseph Michael Taylor | Director | Sale | 13,095 | $23.40 | $306.4K | 48,478 | — |
| 2026-08-05 | 2026-08-03 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 39,000 | $18.32 | $714.5K | 788,317 | — |
| 2026-07-09 | 2026-07-07 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 39,000 | $19.90 | $776.1K | 802,317 | — |
| 2026-07-02 | 2026-06-30 | William W. Burke | Director | Sale (10b5-1) | 2,207 | $19.84 | $43.8K | 23,022 | — |
| 2026-06-30 | 2026-06-26 | Jon Winkelried | Other | Sale | 202,368 | $20.12 | $4.1M | 3,765,054 | — |
| 2026-06-15 | 2026-06-11 | Joseph Michael Taylor | Director | Sale | 5,500 | $18.41 | $101.3K | 61,573 | — |
| 2026-06-10 | 2026-06-08 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 39,000 | $18.33 | $714.9K | 816,317 | — |
| 2026-05-26 | 2026-05-22 | David Foehr | Senior VP, Finance and PAO | Sale (10b5-1) | 862 | $18.80 | $16.2K | 37,751 | — |
| 2026-05-07 | 2026-05-05 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 39,000 | $20.10 | $784.0K | 836,347 | — |
| 2026-05-04 | 2026-05-01 | Raymond Woo | Chief Technology Officer | Sale (10b5-1) | 11,104 | $20.44 | $226.9K | 197,648 | — |
| 2026-04-08 | 2026-04-06 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 39,000 | $18.40 | $717.6K | 850,347 | — |
| 2026-04-03 | 2026-04-01 | Raymond Woo | Chief Technology Officer | Sale (10b5-1) | 11,112 | $18.56 | $206.2K | 166,912 | — |
| 2026-03-05 | 2026-03-03 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 39,000 | $17.45 | $680.6K | 711,164 | — |
| 2026-03-05 | 2026-03-03 | Rebecca B. Robertson | Director | Sale (10b5-1) | 827 | $17.80 | $14.7K | 18,749 | — |
| 2026-03-05 | 2026-03-03 | David Foehr | Senior VP, Finance and PAO | Sale (10b5-1) | 4,560 | $17.80 | $81.2K | 17,550 | — |
| 2026-03-04 | 2026-03-02 | Raymond Woo | Chief Technology Officer | Sale (10b5-1) | 11,112 | $18.25 | $202.8K | 166,912 | — |
| 2026-02-25 | 2026-02-24 | David Foehr | Senior VP, Finance and PAO | Sale (10b5-1) | 781 | $19.98 | $15.6K | 17,550 | — |
| 2026-02-23 | 2026-02-19 | Josef Parvizi | Director | Sale (10b5-1) | 16,714 | $20.27 | $338.8K | 722,652 | — |
| 2026-02-19 | 2026-02-17 | Josef Parvizi | Director | Sale (10b5-1) | 8,286 | $20.00 | $165.7K | 739,366 | — |
| 2026-02-06 | 2026-02-04 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 39,000 | $20.16 | $786.2K | 727,248 | — |
| 2026-02-05 | 2026-02-03 | David Foehr | Senior VP, Finance and PAO | Sale (10b5-1) | 5,556 | $20.00 | $111.1K | 18,900 | — |
| 2026-02-04 | 2026-02-02 | Raymond Woo | Chief Technology Officer | Sale (10b5-1) | 11,112 | $20.55 | $228.4K | 167,617 | — |
| 2026-01-20 | 2026-01-15 | Josef Parvizi | Director | Sale (10b5-1) | 25,000 | $22.94 | $573.5K | 747,652 | — |
| 2026-01-07 | 2026-01-05 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 79,000 | $21.27 | $1.7M | 741,248 | — |
| 2026-01-07 | 2026-01-05 | David Foehr | Senior VP, Finance and PAO | Sale (10b5-1) | 5,556 | $22.60 | $125.6K | 18,900 | — |
| 2026-01-06 | 2025-06-17 | Rebecca B. Robertson | Director | Sale (10b5-1) | 7,445 | $17.63 | $131.3K | 21,230 | — |
| 2026-01-06 | 2026-01-02 | Rebecca B. Robertson | Director | Sale (10b5-1) | 2,500 | $21.89 | $54.7K | 19,576 | — |
| 2026-01-06 | 2026-01-02 | Raymond Woo | Chief Technology Officer | Sale (10b5-1) | 11,112 | $21.18 | $235.4K | 167,317 | — |
| 2025-12-29 | 2025-12-22 | Scott Blumberg | Chief Financial Officer | Sale (10b5-1) | 36,000 | $21.00 | $756.0K | 118,842 | — |
| 2025-12-17 | 2025-12-15 | Josef Parvizi | Director | Sale (10b5-1) | 25,000 | $21.49 | $537.3K | 772,652 | — |
| 2025-12-11 | 2025-12-09 | William W. Burke | Director | Sale (10b5-1) | 32,728 | $22.02 | $720.7K | 17,391 | — |
| 2025-12-10 | 2025-12-08 | Rebecca B. Robertson | Director | Sale (10b5-1) | 5,000 | $20.00 | $100.0K | 8,388 | — |
| 2025-12-10 | 2025-12-08 | Josef Parvizi | Director | Sale (10b5-1) | 25,000 | $20.26 | $506.5K | 797,652 | — |
| 2025-12-08 | 2025-12-04 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 25,000 | $18.82 | $470.5K | 798,135 | — |
| 2025-12-05 | 2025-12-03 | David Foehr | Senior VP, Finance and PAO | Sale (10b5-1) | 5,265 | $16.83 | $88.6K | 19,384 | — |
| 2025-12-04 | 2025-12-02 | Rebecca B. Robertson | Director | Sale (10b5-1) | 827 | $16.67 | $13.8K | 8,388 | — |
| 2025-12-03 | 2025-12-01 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 25,000 | $16.59 | $414.8K | 798,135 | — |
| 2025-12-03 | 2025-12-01 | Raymond Woo | Chief Technology Officer | Sale (10b5-1) | 11,112 | $12.28 | $136.5K | 167,704 | — |
| 2025-11-25 | 2025-11-21 | Xingjuan Chao | President and CEO | Sale (10b5-1) | 50,000 | $15.13 | $756.5K | 798,135 | — |
| 2025-11-13 | 2025-11-11 | Raymond Woo | Chief Technology Officer | Sale (10b5-1) | 11,112 | $12.28 | $136.5K | 167,704 | — |

## Other insider activity (not market trades)

- Option exercises: 76 records
- Tax withholding: 5 records
- Tax withholding (sold to cover): 15 records
- Grants and awards: 13 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.

## FAQ

### 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.

## Live data

This page joins two Massive endpoints: Form 4 filings and daily prices. The CBLL Form 4 request:

- `GET https://api.massive.com/stocks/filings/vX/form-4?tickers=CBLL&filing_date.gte=2025-11-13&sort=filing_date.desc&limit=500`

Requests need a Massive API key. API reference for agents: https://massive.com/docs/llms.txt. Connect an AI agent through the Massive MCP server: https://massive.com/docs/ai-tools.

## Related

- [CeriBell, Inc. (CBLL) stock price](https://massive.com/quote/cbll.md)
- [Recent insider trading](https://massive.com/quote/insider-trading.md)
- [Markets overview](https://massive.com/quote/index.md)

Nothing here is investment advice. Data and content are provided for informational purposes under the Massive Terms of Service: https://massive.com/terms