Niccolo de Masi
CIK 1480011 · President and CEO · last filed 2026-09-15
Niccolo de Masi is a President and CEO who has filed 118 SEC Form 4 insider transactions across 7 companies since 2010. The most recent filing shows the insider had shares withheld for taxes covering $598.0K of IONQ on Sep 15, 2026. Across all open-market trades the lifetime net is −$165.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $73.9M across reported positions. 5 SEC filings were submitted jointly with RESIDEO TECHNOLOGIES, 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.
IONQ.WS 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
SAN FRANCISCO, CA 94105
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| IONQ | President and CEO | 1,123,426 | $31.26 | $35.12M | $0 | 1 | 2026-09-15 |
| IONQ.WS | President and CEO | 1,139,547 | $33.55 | $38.23M | -$105.90M | 14 | 2026-06-12 |
| RSI | Director | 23,171 | $17.84 | $413.4K | -$44.75M | 10 | 2026-03-17 |
| Planet Labs PBC (PL.WS) Delisted | Director | 3,285,866 | $23.71 | $77.91M | $245.6K | 6 | 2025-06-18 |
| GLU MOBILE INC (GLUU) Delisted | Executive Chairman | 497,744 | $12.50 | $6.22M | -$15.35M | 54 | 2020-12-01 |
| REZI | See remarks | 10,415 | $17.07 | $177.8K | $100.0K | 4 | 2019-11-19 |
| XURA, INC. (MESG) Delisted | Director | 0 | — | — | $0 | 2 | 2016-08-19 |
Recent Filings
118 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-15 | IONQ | Tax (F) | −16,121 | -$598.0K | EDGAR |
| 2026-09-10 | IONQ | Notice (144) | −17,690 | -$668.3K | EDGAR |
| 2026-06-12 | IONQ.WS | Tax (F) | −16,120 | -$906.0K | EDGAR |
| 2026-06-10 | IONQ | Notice (144) | −17,690 | -$1.11M | EDGAR |
| 2026-03-17 | RSI | Grant (A) | +7,968 | $0 | EDGAR |
| 2026-03-13 | IONQ.WS | Tax (F) | −20,785 | -$723.4K | EDGAR |
| 2026-03-10 | IONQ | Notice (144) | −26,320 | -$940.4K | EDGAR |
| 2026-02-20 | IONQ.WS | Grant (A) | +11,556 | $0 | EDGAR |
| 2025-12-15 | IONQ.WS | Tax (F) | −16,290 | -$822.4K | EDGAR |
| 2025-12-10 | IONQ | Notice (144) | −17,690 | -$932.1K | 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.