Buonasera David
Officer · MGNI
As of 2026-09-16, Buonasera David has 31 Form 4 transactions on record across 1 company — 21 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in September in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $5.8M
- Indirect $0
| MGNI | direct | 245,155 sh | $5.8M |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-14 | MGNI | Sale | 1,165 @ $24.00 | $28K | −0.5% of holding | 245,155 | Form 4 |
| 2026-09-02 | MGNI | Sale | 1,043 @ $25.00 | $26K | −0.4% of holding | 246,320 | Form 4 |
| 2026-09-01 | MGNI | Sale | 5,371 @ $23.42 | $126K | −2.1% of holding | 247,363 | Form 4 |
| 2026-08-06 | MGNI | Sale | 4,176 @ $22.81 | $95K | −1.6% of holding | 264,309 | Form 4 |
| 2026-08-06 | MGNI | Sale | 2,602 @ $24.00 | $62K | −1.0% of holding | 261,707 | Form 4 |
| 2026-08-06 | MGNI | Sale | 871 @ $25.00 | $22K | −0.3% of holding | 260,836 | Form 4 |
| 2026-07-07 | MGNI | Sale | 1,224 @ $21.00 | $26K | −0.5% of holding | 268,485 | Form 4 |
| 2026-07-01 | MGNI | Sale | 9,376 @ $20.00 | $188K | −3.4% of holding | 269,709 | Form 4 |
| 2026-06-17 | MGNI | Sale | 1,409 @ $19.00 | $27K | −0.5% of holding | 279,085 | Form 4 |
| 2026-06-16 | MGNI | Sale | 11,233 @ $18.00 | $202K | −3.9% of holding | 280,494 | Form 4 |
| 2026-06-15 | MGNI | Sale | 1,057 @ $17.00 | $18K | −0.4% of holding | 291,727 | Form 4 |
| 2026-06-01 | MGNI | Sale | 1,409 @ $15.00 | $21K | −0.5% of holding | 292,784 | Form 4 |
| 2025-09-03 | MGNI | Sale | 2,950 @ $25.37 | $75K | −1.2% of holding | 238,629 | Form 4 |
| 2025-08-18 | MGNI | Sale | 7,834 @ $23.85 | $187K | −3.1% of holding | 241,579 | Form 4 |
| 2025-06-30 | MGNI | Sale | 9,289 @ $22.00 | $204K | −3.6% of holding | 249,413 | Form 4 |
| 2025-05-27 | MGNI | Sale | 8,742 @ $16.00 | $140K | −3.3% of holding | 258,702 | Form 4 |
| 2025-05-23 | MGNI | Sale | 3,653 @ $15.03 | $55K | −1.3% of holding | 267,444 | Form 4 |
| 2024-12-13 | MGNI | Sale | 1,969 @ $16.31 | $32K | −0.9% of holding | 223,795 | Form 4 |
13 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-08-15 | MGNI | Withheld for tax | 8,102 | 252,734 | Form 4 |
| 2026-05-15 | MGNI | Withheld for tax | 8,335 | 294,193 | Form 4 |
| 2026-02-15 | MGNI | Withheld for tax | 17,137 | 302,095 | Form 4 |
| 2026-01-09 | MGNI | Withheld for tax | 12,330 | 319,232 | Form 4 |
| 2026-01-09 | MGNI | Option exercise | 22,935 | 0 | Form 4 |
| 2026-01-09 | MGNI | Option exercise | 22,935 | 331,562 | Form 4 |
| 2026-01-01 | MGNI | Award / grant | 25,801 | 25,801 | Form 4 |
| 2026-01-01 | MGNI | Award / grant | 76,803 | 308,627 | Form 4 |
| 2025-11-15 | MGNI | Withheld for tax | 7,129 | 231,824 | Form 4 |
| 2025-05-15 | MGNI | Withheld for tax | 8,038 | 271,097 | Form 4 |
| 2025-02-15 | MGNI | Withheld for tax | 17,384 | 278,795 | Form 4 |
| 2025-01-09 | MGNI | Award / grant | 72,384 | 296,179 | Form 4 |
| 2025-01-09 | MGNI | Award / grant | 24,366 | 24,366 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.