13F Pro

SEC Form 4 reporting owner

Castagna Michael

Castagna Michael has filed 24 Form 4 transactions reported between December 2, 2025 and July 15, 2026, as Chief Executive Officer of MANNKIND CORP.

Name as filed: Castagna Michael

Open-market buys, 24 mo
$259K
1 lines
Open-market sales, 24 mo
None
reported
Companies
1
with Form 4 filings
Latest transaction
Jul 15, 2026
transaction date

Roles and reported holdings

  • MNKDMANNKIND CORP
    Dec 2, 2025 – Jul 15, 2026

    Chief Executive Officer

    Held directly2,433,779 sh as of Jul 15, 2026 · Form 4

    24 months: $259K bought

Transaction history

All 24 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Jul 15, 2026MNKDChief Executive OfficerShares withheld for tax or exercise priceCode F · direct58,904$241K@ $4.09Form 4
Jul 15, 2026MNKDChief Executive OfficerShares withheld for tax or exercise priceCode F · direct63,996$262K@ $4.09Form 4
Jul 15, 2026MNKDChief Executive OfficerShares withheld for tax or exercise priceCode F · direct47,481$194K@ $4.09Form 4
Jul 15, 2026MNKDChief Executive OfficerShares withheld for tax or exercise priceCode F · direct192,819$789K@ $4.09Form 4
Jul 15, 2026MNKDChief Executive OfficerOption exerciseCode M · direct350,260—Form 4
May 11, 2026MNKDChief Executive OfficerShares withheld for tax or exercise priceCode F · direct34,957$123K@ $3.52Form 4
Mar 23, 2026MNKDChief Executive OfficerGrant or awardCode A · direct782,000—Form 4
Mar 23, 2026MNKDChief Executive OfficerGrant or awardCode A · direct796,000—Form 4
Mar 10, 2026MNKDChief Executive OfficerOpen-market purchaseCode P · direct100,000$259K@ $2.59Form 4
Mar 1, 2026MNKDChief Executive OfficerGrant or awardCode A · direct15,290$50K@ $3.27Form 4
Feb 26, 2026MNKDChief Executive OfficerGrant or awardCode A · direct37,525—Form 4
Feb 26, 2026MNKDChief Executive OfficerGrant or awardCode A · direct57,750—Form 4
Feb 26, 2026MNKDChief Executive OfficerGrant or awardCode A · direct50,000—Form 4
Dec 24, 2025MNKDChief Executive OfficerGiftCode G · direct44,171—Form 4
Dec 17, 2025MNKDChief Executive OfficerOption exerciseCode M · direct50,000—Form 4
Dec 17, 2025MNKDChief Executive OfficerOption exerciseCode M · direct15,804—Form 4
Dec 17, 2025MNKDChief Executive OfficerOption exerciseCode M · direct65,804$299K@ $4.55Form 4
Dec 16, 2025MNKDChief Executive OfficerOption exerciseCode M · direct21,310$97K@ $4.55Form 4
Dec 12, 2025MNKDChief Executive OfficerOption exerciseCode M · direct12,886—Form 4
Dec 12, 2025MNKDChief Executive OfficerOption exerciseCode M · direct7,920—Form 4
Dec 12, 2025MNKDChief Executive OfficerOption exerciseCode M · direct20,806$95K@ $4.55Form 4
Dec 2, 2025MNKDChief Executive OfficerOption exerciseCode M · direct42,080—Form 4
Dec 2, 2025MNKDChief Executive OfficerOption exerciseCode M · direct65,840—Form 4
Dec 2, 2025MNKDChief Executive OfficerOption exerciseCode M · direct107,920$491K@ $4.55Form 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.