Biggest insider buys, week of Sep 7–13, 2026: Republic Services (RSG) leads with $324.3M
Insiders reported 352 purchases of common stock across 125 companies in SEC Form 4 filings. These are the five U.S. companies with the most insider buying by dollar value.
Industry: Refuse Systems. SEC ↗
One insider bought 1,456,107 shares in 13 transactions at an average of $222.71 a share.
- CASCADE INVESTMENT, L.L.C.; GATES WILLIAM H III, 10% owner: bought 268,220 shares at $222.92 ($59.79M) on Sep 4, 2026. Filed Sep 8, 2026. View Form 4 on SEC.gov ↗
- CASCADE INVESTMENT, L.L.C.; GATES WILLIAM H III, 10% owner: bought 253,253 shares at $224.90 ($56.96M) on Sep 3, 2026. Filed Sep 8, 2026. View Form 4 on SEC.gov ↗
- CASCADE INVESTMENT, L.L.C.; GATES WILLIAM H III, 10% owner: bought 249,866 shares at $221.82 ($55.43M) on Sep 8, 2026. Filed Sep 10, 2026. View Form 4 on SEC.gov ↗
All insider trades in RSG →10 smaller transactions not listedGroup 1 Automotive, Inc. is an international Fortune 300 automotive retailer with automotive dealerships and collision centers in the United States and the United Kingdom. Wikipedia (CC BY-SA 4.0) ↗
One insider bought 224,280 shares in 40 transactions at an average of $286.78 a share.
- Conifer Management, L.L.C., 10% owner: bought 39,075 shares at $282.60 ($11.04M) on Sep 3, 2026. Filed Sep 8, 2026. View Form 4 on SEC.gov ↗
- Conifer Management, L.L.C., 10% owner: bought 23,449 shares at $282.21 ($6.62M) on Sep 9, 2026. Filed Sep 11, 2026. View Form 4 on SEC.gov ↗
- Conifer Management, L.L.C., 10% owner: bought 19,286 shares at $302.46 ($5.83M) on Sep 4, 2026. Filed Sep 8, 2026. View Form 4 on SEC.gov ↗
All insider trades in GPI →37 smaller transactions not listedIndustry: Retail-Catalog & Mail-Order Houses. SEC ↗
One insider bought 2,320,000 shares in 2 transactions at an average of $16.31 a share.
- GOLDENTREE ASSET MANAGEMENT LP; GoldenTree Asset Management LLC; Tananbaum Steven A., 10% owner: bought 1,600,000 shares at $16.25 ($26M) on Sep 8, 2026. Filed Sep 10, 2026. View Form 4 on SEC.gov ↗
- GOLDENTREE ASSET MANAGEMENT LP; GoldenTree Asset Management LLC; Tananbaum Steven A., 10% owner: bought 720,000 shares at $16.45 ($11.84M) on Sep 3, 2026. Filed Sep 8, 2026. View Form 4 on SEC.gov ↗
Industry: Trucking (No Local). SEC ↗
One insider bought 3,268,000 shares in 1 transaction at an average of $9.55 a share.
- MOROUN MATTHEW T, Director: bought 3,268,000 shares at $9.55 ($31.23M) on Sep 3, 2026. Filed Sep 8, 2026. View Form 4 on SEC.gov ↗
Industry: Retail-Computer & Computer Software Stores. SEC ↗
4 insiders bought 1,070,255 shares in 4 transactions at an average of $20.28 a share, including the CEO or CFO.
- Cohen Ryan, President, CEO and Chairman: bought 1,000,000 shares at $20.38 ($20.38M) on Sep 10, 2026. Filed Sep 10, 2026. View Form 4 on SEC.gov ↗
- Cheng Lawrence, Director: bought 55,000 shares at $18.80 ($1.03M) on Sep 8, 2026. Filed Sep 8, 2026. View Form 4 on SEC.gov ↗
- Grube James, Director: bought 10,255 shares at $19.12 ($196.08K) on Sep 9, 2026. Filed Sep 9, 2026. View Form 4 on SEC.gov ↗
All insider trades in GME →1 smaller transaction not listed
How this report is made
This report is compiled automatically from SEC Form 4 filings received during the week shown. Companies are ranked by the total dollar value of insider purchases (transaction code P, open-market or private purchase). “Insiders” include officers, directors and owners of more than 10% of a company, which can be investment funds. Only common stock is counted: preferred shares, units and derivatives are left out, as are filings that fail our data checks. When a fund and the insider who controls it both report the same trade, it is counted once. Only U.S.-based companies are ranked, because insiders of foreign companies sometimes report prices in their local currency.
Every figure comes from the original filing, which is linked in each entry; the filing is the authoritative record. This is information, not investment advice. See the methodology, disclaimer and corrections policy.