Gregory Q Brown
CIK 1201232 · Chairman and CEO · last filed 2026-09-04
Gregory Q Brown is a Chairman and CEO who has filed 186 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing, for MSI, was dated Sep 4, 2026. Across all open-market trades the lifetime net is −$1.15B, making them a net seller over the disclosed history. Current disclosed insider exposure totals $40.2M across reported positions. 201 SEC filings were submitted jointly with Motorola Solutions, Inc.
"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.
MSI 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
CHICAGO, IL 60661
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MSI | Chairman and CEO | 74,438 | $515.05 | $38.34M | -$1.16B | 143 | 2026-09-04 |
| XRX | Director | 15,518 | $1.11 | $17.2K | $0 | 4 | 2019-05-21 |
| CSCO | Director | 19,680 | $93.63 | $1.84M | $0 | 3 | 2014-03-14 |
| Motorola Solutions, Inc. (MOT) Delisted | Co-CEO & CEO, EMS and Networks | 393,121 | — | — | $2.01M | 15 | 2010-08-03 |
Recent Filings
186 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-04 | MSI | Mixed | — | -$5.74M | EDGAR |
| 2026-08-24 | MSI | Gift (G) | — | $0 | EDGAR |
| 2026-03-16 | MSI | Mixed | +8,398 | -$3.72M | EDGAR |
| 2026-03-11 | MSI | Mixed | −14,068 | -$12.27M | EDGAR |
| 2026-03-06 | MSI | Mixed | — | -$11.28M | EDGAR |
| 2026-03-04 | MSI | Notice (144) | −28,435 | -$13.59M | EDGAR |
| 2026-02-27 | MSI | Sell (S) | −21,600 | -$10.14M | EDGAR |
| 2026-02-27 | MSI | Mixed | +21,954 | -$10.14M | EDGAR |
| 2026-02-25 | MSI | Notice (144) | −43,200 | -$20.36M | EDGAR |
| 2026-02-25 | MSI | Mixed | — | -$39.53M | 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.