Matthew S Bromberg
CIK 1680979 · President and CEO · last filed 2026-09-18
Matthew S Bromberg is a President and CEO who has filed 92 SEC Form 4 insider transactions across 5 companies since 2016. The most recent filing, for JMKE, was dated Sep 18, 2026. Across all open-market trades the lifetime net is −$24.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $62.5M across reported positions. 16 SEC filings were submitted jointly with Unity Software 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.
U 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
116 NEW MONTGOMERY STREET
SAN FRANCISCO, CA 94105
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| JMKE | Director | — | $17.95 | — | $0 | 1 | 2026-09-18 |
| U | President and CEO | 1,541,131 | $40.40 | $62.26M | -$16.44M | 10 | 2026-08-26 |
| BMBL | Director | 36,522 | $5.94 | $216.9K | -$207.7K | 3 | 2024-06-07 |
| ZYNGA INC (ZNGA) Delisted | Chief Operating Officer | 985,829 | $8.18 | $8.06M | -$7.42M | 66 | 2021-10-19 |
| FITBIT, INC. (FIT) Delisted | Director | 0 | — | — | $0 | 6 | 2021-01-14 |
Recent Filings
92 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-18 | JMKE | Grant (A) | — | $0 | EDGAR |
| 2026-08-26 | U | Sell (S) | −16,383 | -$742.3K | EDGAR |
| 2026-08-25 | U | Notice (144) | −16,383 | -$742.3K | EDGAR |
| 2026-08-19 | U | Grant (A) | — | $0 | EDGAR |
| 2026-05-28 | U | Sell (S) | −138,993 | -$3.78M | EDGAR |
| 2026-05-26 | U | Notice (144) | −138,993 | -$3.78M | EDGAR |
| 2026-03-04 | U | Grant (A) | +503,966 | $0 | EDGAR |
| 2025-11-26 | U | Sell (S) | −41,025 | -$1.70M | EDGAR |
| 2025-11-25 | U | Notice (144) | −41,025 | -$1.70M | EDGAR |
| 2025-09-16 | U | Sell (S) | −122,318 | -$2.60M | 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.