William H Gates III
CIK 902012 · last filed 2026-09-14
William H Gates III is a corporate insider who has filed 595 SEC Form 4 insider transactions across 11 companies since 2007. The most recent filing shows the insider bought $258.6M of RSG on Sep 14, 2026. Across all open-market trades the lifetime net is −$17.03B, making them a net seller over the disclosed history. Current disclosed insider exposure totals $146.37B across reported positions. 494 SEC filings were submitted jointly with CASCADE INVESTMENT, L.L.C.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
MSFT price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
KIRKLAND, WA 98033
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| RSG | 10%+ Owner | 116,741,230 | $241.31 | $28.17B | $4.42B | 92 | 2026-09-14 |
| Evolv Technologies Holdings, Inc. (EVLVW) Delisted | 10%+ Owner | 17,965,332 | $0.00 | $75.5K | -$23.89M | 1 | 2025-09-12 |
| ECL | 10%+ Owner | 29,248,741 | $288.89 | $8.45B | $682.84M | 20 | 2024-11-22 |
| WIW | 10%+ Owner | 13,873,452 | $7.94 | $110.16M | $72.63M | 44 | 2022-06-01 |
| WIA | 10%+ Owner | 5,195,082 | $7.63 | $39.64M | -$17.44M | 47 | 2022-05-27 |
| XCUR | 10%+ Owner | 33,765 | $1.09 | $36.8K | -$606.4K | 1 | 2021-12-22 |
| AN | 10%+ Owner | 10,417,807 | $160.20 | $1.67B | -$149.92M | 43 | 2021-10-25 |
| DE | 10%+ Owner | 29,259,573 | $641.25 | $18.76B | $0 | 1 | 2021-05-14 |
| GAMCO INVESTORS, INC. ET AL (GBL) Delisted | 10%+ Owner | 17,245 | $14.78 | $254.9K | -$7.23M | 8 | 2017-11-22 |
| MSFT | Director | 167,417,750 | $532.60 | $89.17B | -$21.99B | 318 | 2017-05-05 |
| Alto Ingredients, Inc. (PEIX) Delisted | 10%+ Owner | 222,514 | $6.78 | $1.51M | -$22.05M | 20 | 2008-06-11 |
Recent Filings
595 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-14 | RSG | Buy (P) | +1,161,620 | $258.61M | EDGAR |
| 2026-08-20 | RSG | Buy (P) | +757,938 | $166.81M | EDGAR |
| 2026-08-18 | RSG | Buy (P) | +712,100 | $153.29M | EDGAR |
| 2026-08-12 | RSG | Buy (P) | +1,003,328 | $216.29M | EDGAR |
| 2026-05-18 | RSG | Buy (P) | +976,000 | $203.68M | EDGAR |
| 2025-09-12 | Evolv Technologies Holdings, Inc. (EVLVW) Delisted | Sell (S) | −2,941,400 | -$23.89M | EDGAR |
| 2025-08-21 | RSG | Buy (P) | +8,516 | $2.00M | EDGAR |
| 2024-11-22 | ECL | Sell (S) | −553,084 | -$134.39M | EDGAR |
| 2024-11-20 | ECL | Sell (S) | −326,916 | -$80.17M | EDGAR |
| 2024-11-18 | ECL | Sell (S) | −400,000 | -$98.66M | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.