RONALD D FISHER
CIK 1065266 · last filed 2026-05-19
RONALD D FISHER is a corporate insider who has filed 23 SEC Form 4 insider transactions across 4 companies since 2009. The most recent filing, for ARM, was dated May 19, 2026. Across all open-market trades the lifetime net is −$99.9M, making them a net seller over the disclosed history.
"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.
$0
4
23
-$99.86M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ARM | Director | — | $380.81 | — | $0 | 1 | 2026-05-19 |
| T-Mobile US, Inc. (TMUSR) Delisted | Director | 571,672 | — | — | $36.05M | 1 | 2020-06-30 |
| S | Director | 0 | $14.85 | $0 | -$2.03M | 16 | 2020-04-02 |
| GSI COMMERCE INC (GSIC) Delisted | Director | 4,515 | — | — | -$133.88M | 4 | 2011-06-03 |
Recent Filings
23 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-19 | ARM | Grant (A) | — | $0 | EDGAR |
| 2020-06-30 | T-Mobile US, Inc. (TMUSR) Delisted | Buy (P) | +350,000 | $36.05M | EDGAR |
| 2020-04-02 | S | Disp (D) | −2,161,388 | $0 | EDGAR |
| 2019-08-05 | S | Grant (A) | +69,638 | $0 | EDGAR |
| 2018-11-19 | S | Mixed | +384,102 | -$2.03M | EDGAR |
| 2018-11-19 | S | Grant (A) | +81,566 | $0 | EDGAR |
| 2018-08-09 | S | Grant (A) | +81,566 | $0 | EDGAR |
| 2017-12-21 | S | Mixed | +374,731 | -$2.08M | EDGAR |
| 2017-11-17 | S | Mixed | +400,151 | -$1.92M | EDGAR |
| 2017-08-07 | S | Grant (A) | +58,548 | $0 | EDGAR |