The largest open-market buyer on the Form 4 tape this month is not an executive. It is Cascade Investment, the holding company through which Bill Gates invests, and it has been buying Republic Services almost every session.
Across 32 filings dated 20 August to 4 September, Cascade bought $625.0 million of the waste hauler's stock, paying between $222.81 and $225.35 a share. The two largest single purchases came back to back: 253,253 shares for $56.96 million on 3 September, then 268,220 shares for $59.79 million on 4 September.
Scale is what separates this from a normal insider purchase. Republic Services is a $67.7 billion company, so the position is not a signal about liquidity or a board member topping up after a decline. It is a long-standing holder adding steadily at prices it apparently finds acceptable, session after session, without waiting for a pullback.
The filer's role matters for how the data should be read. Cascade files as a beneficial owner rather than an officer or director, so these purchases carry no view from inside the business the way a chief executive's would. What they carry instead is the decision of an owner who already knows the company well and chose to add rather than trim.
Waste collection is the kind of business that rarely leads a market narrative: contracted revenue, route density, pricing that tracks inflation. That is also why a buyer of this size accumulating in the open market, rather than through a negotiated block, is worth noting at all.
Figures are from SEC Form 4 filings via EDGAR, reviewed by InsiderBuying.com, for purchases dated 20 August to 4 September 2026. Nothing here is a recommendation, and a purchase is not a forecast.
Track every Form 4 filed at Republic Services (RSG) → insiderbuying.com/companies/RSG