David Buonasera
CIK 1966857 · CHIEF TECHNOLOGY OFFICER · last filed 2026-06-03
David Buonasera is a CHIEF TECHNOLOGY OFFICER who has filed 29 SEC Form 4 insider transactions across 1 company since 2023. The most recent filing shows the insider sold $21.1K of MGNI on Jun 3, 2026. Across all open-market trades the lifetime net is −$1.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.8M across reported positions.
"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.
$4.76M
1
29
-$1.46M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MGNI | CHIEF TECHNOLOGY OFFICER | 292,784 | $16.25 | $4.76M | -$1.46M | 29 | 2026-06-03 |
Recent Filings
29 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-03 | MGNI | Sell (S) | −1,409 | -$21.1K | EDGAR |
| 2026-05-19 | MGNI | Tax (F) | −8,335 | -$106.9K | EDGAR |
| 2026-02-18 | MGNI | Tax (F) | −17,137 | -$200.5K | EDGAR |
| 2026-01-12 | MGNI | Mixed | +10,605 | -$199.4K | EDGAR |
| 2026-01-05 | MGNI | Grant (A) | +76,803 | $0 | EDGAR |
| 2025-11-18 | MGNI | Tax (F) | −7,129 | -$100.9K | EDGAR |
| 2025-09-04 | MGNI | Sell (S) | −2,950 | -$74.8K | EDGAR |
| 2025-08-20 | MGNI | Sell (S) | −7,834 | -$186.8K | EDGAR |
| 2025-07-02 | MGNI | Sell (S) | −9,289 | -$204.4K | EDGAR |
| 2025-05-28 | MGNI | Sell (S) | −12,395 | -$194.8K | EDGAR |