13F Pro

SEC Form 4 reporting owner

Robertson Rebecca B

Robertson Rebecca B has filed 7 Form 4 transactions reported between December 2, 2025 and June 2, 2026, as a reporting owner of Ceribell, Inc. and Director of TANDEM DIABETES CARE INC.

Name as filed: ROBERTSON REBECCA B

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$29K
2 lines
Companies
2
with Form 4 filings
Latest transaction
Jun 2, 2026
transaction date

Roles and reported holdings

  • CBLLCeribell, Inc.
    Dec 2, 2025 – Jun 2, 2026

    Reporting owner

    Held directly18,749 sh as of Mar 3, 2026 · Form 4

    24 months: $29K sold

  • TNDMTANDEM DIABETES CARE INC
    May 20, 2026 – May 21, 2026

    Director

    No common-stock holding reported on a purchase, sale, gift or withholding line.

Transaction history

All 7 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Jun 2, 2026CBLLGrant or awardCode A · direct7,838—Form 4
May 21, 2026TNDMDirectorOption exerciseCode M · direct8,759—Form 4
May 20, 2026TNDMDirectorGrant or awardCode A · direct10,220—Form 4
Mar 3, 2026CBLLOpen-market saleCode S · direct827$15K@ $17.80Form 4
Jan 2, 2026CBLLOption exerciseCode M · direct2,500$6K@ $2.24Form 4
Dec 8, 2025CBLLOption exerciseCode M · direct5,000$11K@ $2.24Form 4
Dec 2, 2025CBLLOpen-market saleCode S · direct827$14K@ $16.67Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.