13F Pro

SEC Form 4 reporting owner

Griffith Joseph H. IV

Griffith Joseph H. IV has filed 9 Form 4 transactions reported between February 1, 2026 and August 25, 2026, as Chief Financial Officer of 908 Devices Inc..

Name as filed: Griffith Joseph H. IV

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$331K
3 lines
Companies
1
with Form 4 filings
Latest transaction
Aug 25, 2026
transaction date

Roles and reported holdings

  • MASS908 Devices Inc.
    Feb 1, 2026 – Aug 25, 2026

    Chief Financial Officer

    Held directly121,497 sh as of Aug 25, 2026 · Form 4

    24 months: $331K sold

Transaction history

All 9 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Aug 25, 2026MASSChief Financial OfficerOpen-market saleCode S · direct11,459$125K@ $10.95Form 4
May 28, 2026MASSChief Financial OfficerOpen-market saleCode S · direct6,940$63K@ $9.03Form 4
Feb 2, 2026MASSChief Financial OfficerGrant or awardCode A · direct52,967—Form 4
Feb 2, 2026MASSChief Financial OfficerGrant or awardCode A · direct121,164—Form 4
Feb 2, 2026MASSChief Financial OfficerOpen-market saleCode S · direct23,175$143K@ $6.18Form 4
Feb 1, 2026MASSChief Financial OfficerOption exerciseCode M · direct43,473—Form 4
Feb 1, 2026MASSChief Financial OfficerOption exerciseCode M · direct11,260—Form 4
Feb 1, 2026MASSChief Financial OfficerOption exerciseCode M · direct10,306—Form 4
Feb 1, 2026MASSChief Financial OfficerOption exerciseCode M · direct5,102—Form 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.