Brian Gephart
CIK 1778484 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 3, 2022 · Latest: Feb. 3, 2022
On this page
Insider at
Insider transactions
0 buys (P)
1 sells (S)
Net:
$-307,982
+ 10 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
10 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 10, 2026 | MGNI | S | 12,479 | $24.68 | $307,982 | 106,117 Direct | -10.52% | Disposed | -4.8% (price as of 2026-08-20) |
| Aug. 16, 2023 | MGNI | S | 1,141 | $8.31 | $9,482 | 95,422 Direct | -1.18% | Disposed | 182.9% (price as of 2026-08-20) |
| May 16, 2023 | MGNI | S | 1,237 | $10.88 | $13,459 | 96,563 Direct | -1.26% | Disposed | 116.0% (price as of 2026-08-20) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| July 1, 2021 | MGNI | Stock Option (Right to Buy) | Common Stock (13,594) | $34.68 | July 1, 2031 | 13,594 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).