David Buonasera
CIK 1966857 · CHIEF TECHNOLOGY OFFICER · last filed 2026-06-03
"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.
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Disclosed Exposure
$4.76M
Companies
1
Total Filings
29
Lifetime Open-Market Net
-$1.46M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 3 of 3
29 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-05-17 | MGNI | Mixed | −13,132 | -$143.5K | EDGAR |
| 2024-02-16 | MGNI | Tax (F) | −6,765 | -$65.9K | EDGAR |
| 2024-01-04 | MGNI | Grant (A) | +85,058 | $0 | EDGAR |
| 2023-11-17 | MGNI | Tax (F) | −1,665 | -$13.1K | EDGAR |
| 2023-09-07 | MGNI | Sell (S) | −5,444 | -$46.7K | EDGAR |
| 2023-08-18 | MGNI | Sell (S) | −2,648 | -$22.0K | EDGAR |
| 2023-07-06 | MGNI | Sell (S) | −6,624 | -$89.0K | EDGAR |
| 2023-05-18 | MGNI | Sell (S) | −1,559 | -$17.0K | EDGAR |
| 2023-03-02 | MGNI | Grant (A) | +46,873 | $0 | EDGAR |
Showing 21–29 of 29
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Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.