BlackRock Portfolio Management LLC is an investment firm that reports beneficial ownership of shares in Clearway Energy, Inc. (CWEN) and 2 other companies under U.S. securities law. It has submitted 16 SEC insider filings since 2025, most recently in July 2026.
Every role BlackRock Portfolio Management LLC has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
Clearway Energy, Inc. (CWEN)5 filingsYork Space Systems Inc. (YSS)4 filingsUpdated Aug 30, 2026
BlackRock Portfolio Management LLC is 10% Owner of Clearway Energy, Inc. (CWEN). 22 SEC Form 4 filings on record going back to 2025, most recently on 11 August 2026. Most recent open-market trade: sold $182K of YSS on 10 August 2026. Lifetime open-market purchases: $25.59M. Lifetime open-market sales: $24.10M.
Every recent SEC Form 4 transaction BlackRock Portfolio Management LLC has reported, most recent first.
InsiderAlpha's records for BlackRock Portfolio Management LLC go back to 2025: 22 primary Form 4 filings, an average of 11.0 per year. The typical open-market purchase is $25.59M (1 buy totaling $25.59M). The largest single buy on record is $25.59M of YSS in 2026. Sales side: 13 recorded sales totaling $24.10M, so the filing history runs buy-heavy by dollar value. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Insiders who reported open-market trades in the last 12 months at the companies BlackRock Portfolio Management LLC files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
BlackRock Portfolio Management LLC is an investment firm, tracked as 10% Owner of Clearway Energy, Inc. (CWEN). InsiderAlpha holds 22 primary Form 4 filings for it, the earliest from 2025, updated as new SEC EDGAR filings are processed.
9 primary Form 4 filings in the last 90 days, covering 2 companies.
Recorded transactions: 1 open-market purchase ($25.59M) and 13 open-market sales ($24.10M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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$YSS York Space Systems Inc.116.2K shares @ $13.49$1.57M