BXDC insider buys $189.7 million, and the week's other big purchases

The week in one paragraph

Selling outweighed buying, as it does most weeks: insiders reported 560 purchases worth $586.3 million and 1312 sales worth $4.52 billion, 43% of the sales under pre-arranged 10b5-1 plans. The largest purchase was at BXDC, where Blackstone Treasury Holdings III LLC bought $189.7 million. 3 companies had several insiders buying.

Biggest insider buys

BXDC 10% owner Blackstone Treasury Holdings III LLC bought 9,486,795 shares for $189.7 million, opening a new position.

BRCB director Cynosure Group, LLC bought 13,642,712 shares for $73 million, opening a new position.

RSG 10% owner Cascade Investment, LLC bought 307,505 shares for $63.9 million.

RSG 10% owner Cascade Investment, LLC bought 119,795 shares for $25 million.

LNBIX 10% owner Lincoln Financial Investments Corp bought 2,448,579.82 shares for $25 million, adding 14% to their holding.

Several insiders buying

RIVN: 2 insiders bought a combined $1 billion in the 30 days to this week.

BXDC: 8 insiders bought a combined $191.2 million in the 30 days to this week.

WGS: 2 insiders bought a combined $82 million in the 30 days to this week.

Largest sales

CARR: Maximilian Viessmann sold $750 million.

SITM: Megachips Corp /fi sold $311.8 million.

PUMP: Exxon Mobil Corp sold $276.6 million.

Congress trades reported this week

Rep. Sara Jacobs (D-CA-51): partial sell of QCOM, $500K–$1M, traded 2026-05-07.

Rep. Sara Jacobs (D-CA-51): partial sell of QCOM, $500K–$1M, traded 2026-05-06.

Sen. Bernie Moreno (R-OH): sell of ETOR, $100K–$250K, traded 2026-05-06.

Rep. Brian Babin (R-TX-36): partial sell of FTAI, $50K–$100K, traded 2026-05-05.

Rep. Jake Auchincloss (D-MA-4): partial sell of STT, $15K–$50K, traded 2026-05-18 (spouse).

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