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The Friday FilingWeek ending Aug 28, 2026

MAIR insider buys $219 million, and the week's other big purchases

The week's notable insider trades and Congress reports, from SEC filings.

By · Founder and editor, WallStPal

The week in one paragraph

Selling outweighed buying, as it does most weeks: insiders reported 378 purchases worth $751.8 million and 1099 sales worth $4.03 billion, 37% of the sales under pre-arranged 10b5-1 plans. The largest purchase was at MAIR, where Ernesto Bertarelli bought $219 million. 3 companies had several insiders buying.

Biggest insider buys

MAIR 10% owner Ernesto Bertarelli bought 8,770,524 shares for $219 million, adding 23% to their holding.

RSG 10% owner Cascade Investment, LLC bought 301,639 shares for $67.2 million.

RSG 10% owner Cascade Investment, LLC bought 284,600 shares for $62.5 million.

RSG 10% owner Cascade Investment, LLC bought 275,500 shares for $61 million.

RSG 10% owner Cascade Investment, LLC bought 269,477 shares for $59.8 million.

Several insiders buying

MAIR: 2 insiders bought a combined $219.6 million in the 30 days to this week.

BABA: 2 insiders bought a combined $25.7 million in the 30 days to this week.

SUJA: 2 insiders bought a combined $20.5 million in the 30 days to this week.

Largest sales

ALH: Bdt Capital Partners, LLC sold $589.6 million.

AVAH: Paul R. Vigano sold $166.8 million.

AVAH: Robert M. Williams Jr sold $166.8 million.

Congress trades reported this week

Rep. Michael A. Rulli (R-OH-6): partial sell of GOOGL, $50K–$100K, traded 2026-08-24.

Rep. Kelly Morrison (D-MN-3): sell of ACN, $15K–$50K, traded 2026-08-11 (spouse).

Rep. Jared Moskowitz (D-FL-23): buy of AMAT, $1K–$15K, traded 2026-07-13.

Rep. Jared Moskowitz (D-FL-23): sell of STE, $1K–$15K, traded 2026-07-13.

Rep. Jared Moskowitz (D-FL-23): partial sell of GWW, $1K–$15K, traded 2026-07-13.

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Sources

  1. Form 4: Ernesto Bertarelli, MAIR · filed 2026-08-27
  2. Form 4: Cascade Investment, LLC, RSG · filed 2026-08-26
  3. Form 4: Cascade Investment, LLC, RSG · filed 2026-08-28
  4. Form 4: Cascade Investment, LLC, RSG · filed 2026-08-28
  5. Form 4: Cascade Investment, LLC, RSG · filed 2026-08-26
  6. Form 4: Bdt Capital Partners, LLC, ALH · filed 2026-08-24
  7. Form 4: Paul R. Vigano, AVAH · filed 2026-08-24
  8. Form 4: Robert M. Williams Jr, AVAH · filed 2026-08-24

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