Day David
Officer · MGNI
As of 2026-09-16, Day David has 33 Form 4 transactions on record across 1 company — 10 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.
Reconstructed holdings
- Direct $10.8M
- Indirect $0
| MGNI | direct | 452,861 sh | $10.8M |
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 |
|---|---|---|---|---|---|---|---|
| 2025-08-18 | MGNI | Sale | 13,366 @ $23.85 | $319K | −3.4% of holding | 382,106 | Form 4 |
| 2025-06-30 | MGNI | Sale | 21,682 @ $22.00 | $477K | −4.9% of holding | 421,846 | Form 4 |
| 2025-06-26 | MGNI | Sale | 36,000 @ $20.95 | $754K | −7.5% of holding | 443,528 | Form 4 |
| 2025-06-24 | MGNI | Sale | 35,000 @ $19.95 | $698K | −7.3% of holding | 443,528 | Form 4 |
| 2025-06-18 | MGNI | Sale | 38,146 @ $18.95 | $723K | −7.9% of holding | 443,528 | Form 4 |
| 2025-02-07 | MGNI | Sale | 39,000 @ $20.00 | $780K | −7.4% of holding | 488,506 | Form 4 |
| 2025-02-06 | MGNI | Sale | 13,245 @ $18.35 | $243K | −2.6% of holding | 488,506 | Form 4 |
| 2025-01-03 | MGNI | Sale | 13,345 @ $17.00 | $227K | −3.4% of holding | 374,014 | Form 4 |
| 2024-12-17 | MGNI | Sale | 13,500 @ $16.32 | $220K | −3.4% of holding | 387,359 | Form 4 |
| 2024-12-16 | MGNI | Sale | 11,644 @ $16.44 | $191K | −2.8% of holding | 400,859 | Form 4 |
23 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-08-15 | MGNI | Withheld for tax | 14,170 | 452,861 | Form 4 |
| 2026-08-13 | MGNI | Gift | 26,258 | 467,031 | Form 4 |
| 2026-05-15 | MGNI | Withheld for tax | 14,170 | 493,289 | Form 4 |
| 2026-02-15 | MGNI | Withheld for tax | 30,617 | 507,459 | Form 4 |
| 2026-01-09 | MGNI | Withheld for tax | 35,169 | 538,076 | Form 4 |
| 2026-01-09 | MGNI | Option exercise | 72,675 | 573,245 | Form 4 |
| 2026-01-09 | MGNI | Option exercise | 72,675 | 0 | Form 4 |
| 2026-01-01 | MGNI | Award / grant | 44,231 | 44,231 | Form 4 |
| 2026-01-01 | MGNI | Award / grant | 131,661 | 500,570 | Form 4 |
| 2025-11-15 | MGNI | Withheld for tax | 13,197 | 368,909 | Form 4 |
| 2025-08-15 | MGNI | Gift | 26,374 | 395,472 | Form 4 |
| 2025-06-26 | MGNI | Option exercise | 36,000 | 479,528 | Form 4 |
| 2025-06-26 | MGNI | Option exercise | 36,000 | 44,784 | Form 4 |
| 2025-06-24 | MGNI | Option exercise | 35,000 | 478,528 | Form 4 |
| 2025-06-24 | MGNI | Option exercise | 35,000 | 80,784 | Form 4 |
| 2025-06-18 | MGNI | Option exercise | 38,146 | 481,674 | Form 4 |
| 2025-06-18 | MGNI | Option exercise | 38,146 | 0 | Form 4 |
| 2025-05-15 | MGNI | Withheld for tax | 13,865 | 443,528 | Form 4 |
| 2025-02-15 | MGNI | Withheld for tax | 31,113 | 457,393 | Form 4 |
| 2025-02-07 | MGNI | Option exercise | 39,000 | 527,506 | Form 4 |
| 2025-02-07 | MGNI | Option exercise | 39,000 | 38,146 | Form 4 |
| 2025-01-09 | MGNI | Award / grant | 127,737 | 501,751 | Form 4 |
| 2025-01-09 | MGNI | Award / grant | 43,000 | 43,000 | 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.