13F Pro

SEC Form 4 reporting owner

BlackRock Portfolio Management LLC

BlackRock Portfolio Management LLC has filed 29 Form 4 transactions reported between December 12, 2025 and September 23, 2026, as 10% owner of Clearway Energy, Inc. and 10% owner of York Space Systems Inc..

Name as filed: BlackRock Portfolio Management LLC

Open-market buys, 24 mo
$25.6M
1 lines
Open-market sales, 24 mo
$18.4M
10 lines
Companies
2
with Form 4 filings
Latest transaction
Sep 23, 2026
transaction date

Roles and reported holdings

  • CWENClearway Energy, Inc.
    Dec 12, 2025 – Sep 23, 2026

    10% owner

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

  • YSSYork Space Systems Inc.
    Jan 30, 2026 – Aug 7, 2026

    10% owner

    Held indirectly (latest line)16,517,115 sh as of Aug 7, 2026 · Form 4

    24 months: $25.6M bought · $18.4M sold

Transaction history

All 29 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 23, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect5,275—Form 4
Sep 23, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect260$8K@ $30.12Form 4
Aug 7, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect1,646—Form 4
Aug 7, 2026YSS10% ownerOpen-market saleCode S · indirect200,170$2.2M@ $10.99Form 4
Aug 6, 2026YSS10% ownerOpen-market saleCode S · indirect201,504$2.3M@ $11.60Form 4
Aug 5, 2026YSS10% ownerOpen-market saleCode S · indirect11,784$180K@ $15.28Form 4
Aug 5, 2026YSS10% ownerOpen-market saleCode S · indirect116,162$1.6M@ $13.49Form 4
Aug 4, 2026YSS10% ownerOpen-market saleCode S · indirect456,310$7.1M@ $15.58Form 4
Aug 4, 2026YSS10% ownerOpen-market saleCode S · indirect77,743$1.2M@ $15.02Form 4
Aug 3, 2026YSS10% ownerOpen-market saleCode S · indirect13,754$207K@ $15.03Form 4
Jul 31, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect217—Form 4
Jul 31, 2026YSS10% ownerOpen-market saleCode S · indirect35,574$539K@ $15.14Form 4
Jul 30, 2026YSS10% ownerOpen-market saleCode S · indirect140,823$2.1M@ $15.18Form 4
Jul 29, 2026YSS10% ownerOpen-market saleCode S · indirect63,390$971K@ $15.31Form 4
Jul 9, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect101—Form 4
Jun 18, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect945—Form 4
Jun 12, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect438—Form 4
May 1, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect6,461—Form 4
Apr 29, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect21,841—Form 4
Apr 1, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect42,738,750—Form 4
Apr 1, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect435,552$17.4M@ $39.91Form 4
Apr 1, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect99,661$4.0M@ $39.91Form 4
Mar 31, 2026CWEN10% ownerConversion of derivativeCode C · indirect215,000—Form 4
Mar 26, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect1,091—Form 4
Mar 13, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect493—Form 4
Feb 23, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect875—Form 4
Feb 23, 2026CWEN10% ownerOther acquisition or dispositionCode J · indirect129$5K@ $39.61Form 4
Jan 30, 2026YSSOpen-market purchaseCode P · indirect752,500$25.6M@ $34.00Form 4
Dec 12, 2025CWEN10% ownerOther acquisition or dispositionCode J · indirect1,737—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.