SEC Form 4 reporting owner

Wirtjes Sean M

Wirtjes Sean M has filed 6 Form 4 transactions reported between February 9, 2026 and May 29, 2026, as CHIEF FINANCIAL OFFICER of RAPID MICRO BIOSYSTEMS, INC..

Name as filed: WIRTJES SEAN M

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$123K
3 lines
Companies
1
with Form 4 filings
Latest transaction
May 29, 2026
transaction date

Roles and reported holdings

  • RPIDRAPID MICRO BIOSYSTEMS, INC.
    Feb 9, 2026 – May 29, 2026

    CHIEF FINANCIAL OFFICER

    Held directly556,194 sh as of Mar 11, 2026 · Form 4

    24 months: $123K sold

Transaction history

All 6 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
May 29, 2026RPIDCHIEF FINANCIAL OFFICERGrant or awardCode A · direct12,787$25K@ $1.96Form 4
Mar 11, 2026RPIDCHIEF FINANCIAL OFFICEROpen-market saleCode S · direct7,480$32K@ $4.32Form 4
Feb 20, 2026RPIDCHIEF FINANCIAL OFFICEROpen-market saleCode S · direct17,254$68K@ $3.92Form 4
Feb 11, 2026RPIDCHIEF FINANCIAL OFFICERGrant or awardCode A · direct193,000—Form 4
Feb 11, 2026RPIDCHIEF FINANCIAL OFFICERGrant or awardCode A · direct97,000—Form 4
Feb 9, 2026RPIDCHIEF FINANCIAL OFFICEROpen-market saleCode S · direct6,027$23K@ $3.78Form 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.