13F Pro

SEC Form 4 reporting owner

Prins Richard K

Prins Richard K has filed 8 Form 4 transactions reported between August 19, 2024 and August 11, 2026, as a reporting owner of Amphastar Pharmaceuticals, Inc. and Director of IGC Pharma, Inc..

Name as filed: PRINS RICHARD K

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$162K
1 lines
Companies
2
with Form 4 filings
Latest transaction
Aug 11, 2026
transaction date

Roles and reported holdings

  • AMPHAmphastar Pharmaceuticals, Inc.
    Aug 19, 2024 – Aug 11, 2026

    Reporting owner

    Held directly29,625 sh as of Aug 11, 2026 · Form 4

    24 months: $162K sold

  • IGCIGC Pharma, Inc.
    Jan 19, 2026 – Apr 1, 2026

    Director

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

Transaction history

All 8 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Aug 11, 2026AMPHOpen-market saleCode S · direct7,973$162K@ $20.30Form 4
Jun 1, 2026AMPHGrant or awardCode A · direct17,365—Form 4
Jun 1, 2026AMPHGrant or awardCode A · direct8,143—Form 4
Apr 1, 2026IGCDirectorOption exerciseCode M · direct70,000—Form 4
Apr 1, 2026IGCDirectorOption exerciseCode M · direct100,000—Form 4
Jan 19, 2026IGCDirectorOption exerciseCode M · direct100,000—Form 4
Nov 25, 2025AMPHOption exerciseCode M · direct4,179$70K@ $16.69Form 4
Aug 19, 2024AMPHGiftCode G · direct1,500—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.