A fresh Form 4 filing shows BlueArc Capital Management, LLC, a 10%+ owner of AMG Pantheon Infrastructure Fund, LLC (PBLSX), purchased 3,679,853 shares on the open market on April 1, 2026. The insider paid $10.87 per share, for a total outlay of $39,999,999.99. Following the purchase, BlueArc Capital Management now holds 8,613,599 shares directly.
Because this was an open-market purchase, it means BlueArc Capital Management used its own capital to acquire the position rather than receiving shares through options, grants, or other compensation-linked mechanisms — a distinction that generally carries more weight for observers of insider activity.
Part of a Larger Buying Pattern
This transaction is not an isolated event. It is the second open-market purchase by BlueArc Capital Management in AMG Pantheon Infrastructure Fund since October 24, 2025. Across the two purchases spanning October 24, 2025 to April 1, 2026, the firm has committed a combined $65,000,000 to acquiring shares of PBLSX. Whoisbuyingnow.com classifies this repeated, concentrated buying behavior as a ‘cluster buy’ — a label reserved for situations where the same insider (or group of insiders) makes multiple sizable purchases within a defined window rather than a single one-off trade.
Cluster buying patterns like this one are notable because they show sustained conviction over time rather than a single moment of purchasing activity. A insider adding tens of millions of dollars across two separate transactions, months apart, suggests the position was built deliberately rather than opportunistically in response to a single short-term price move.
What the Numbers Show
The April 1 purchase alone accounts for roughly 61.5% of the total $65,000,000 committed across both transactions, indicating the pace of buying accelerated rather than slowed heading into 2026. With 8,613,599 shares now held directly, BlueArc Capital Management’s stake in AMG Pantheon Infrastructure Fund reflects one of the more substantial insider positions tracked in recent filings on this site.
Academic research on insider trading disclosures has found that clustered buying by insiders — particularly by significant owners rather than individual officers — can correlate with subsequent outperformance on average across large samples of filings. That said, this is a single filing tied to one entity and one fund, and readers should treat it as a data point in the public record rather than a signal to act on. Whoisbuyingnow.com will continue monitoring SEC filings for any additional transactions from BlueArc Capital Management or other insiders connected to AMG Pantheon Infrastructure Fund.
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Source: original SEC Form 4 filing.