Katie Seitz Evans
CIK 1700262 · View on SEC EDGAR ↗
First SEC filing: Sept. 25, 2020 · Latest: Sept. 25, 2020
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 6, 2026 | MGNI | S 10b5-1 | 20,000 | $24.00 | $480,000 | 496,840 Direct | -3.87% | Disposed | -2.1% (price as of 2026-08-20) |
| Aug. 16, 2023 | MGNI | S | 7,038 | $8.31 | $58,486 | 349,033 Direct | -1.98% | Disposed | 182.9% (price as of 2026-08-20) |
| July 11, 2023 | MGNI | S 10b5-1 | 17,774 | $15.00 | $266,610 | 356,071 Direct | -4.75% | Disposed | 56.7% (price as of 2026-08-20) |
| June 12, 2023 | MGNI | S 10b5-1 | 11,098 | $13.43 | $149,046 | 373,845 Direct | -2.88% | Disposed | 75.0% (price as of 2026-08-20) |
| May 16, 2023 | MGNI | S | 7,450 | $10.88 | $81,056 | 384,943 Direct | -1.90% | Disposed | 116.0% (price as of 2026-08-20) |
| March 1, 2023 | MGNI | S | 78,155 | $10.99 | $858,923 | 392,393 Direct | -16.61% | Disposed | 113.9% (price as of 2026-08-20) |
| April 6, 2022 | MGNI | S 10b5-1 | 15,805 | $13.13 | $207,520 | 393,276 Direct | -3.86% | Disposed | 79.0% (price as of 2026-08-20) |
| Sept. 14, 2021 | MGNI | S 10b5-1 | 32,260 | $30.00 | $967,800 | 354,744 Direct | -8.34% | Disposed | -21.7% (price as of 2026-08-20) |
| Sept. 13, 2021 | MGNI | S 10b5-1 | 2,476 | $29.97 | $74,206 | 387,004 Direct | -0.64% | Disposed | -21.6% (price as of 2026-08-20) |
| Sept. 13, 2021 | MGNI | S 10b5-1 | 870 | $28.84 | $25,091 | 389,480 Direct | -0.22% | Disposed | -18.5% (price as of 2026-08-20) |
| Sept. 13, 2021 | MGNI | S 10b5-1 | 28,584 | $28.34 | $810,071 | 390,350 Direct | -6.82% | Disposed | -17.1% (price as of 2026-08-20) |
| Aug. 16, 2021 | MGNI | S | 3,329 | $26.82 | $89,284 | 418,934 Direct | -0.79% | Disposed | -12.4% (price as of 2026-08-20) |
| May 17, 2021 | MGNI | S | 12,438 | $25.98 | $323,139 | 379,460 Direct | -3.17% | Disposed | -9.5% (price as of 2026-08-20) |
| April 5, 2021 | MGNI | S | 27,896 | $40.26 | $1,123,093 | 391,898 Direct | -6.65% | Disposed | -41.6% (price as of 2026-08-20) |
| April 1, 2021 | MGNI | S 10b5-1 | 55,363 | $44.11 | $2,442,062 | 419,794 Direct | -11.65% | Disposed | -46.7% (price as of 2026-08-20) |
| April 1, 2021 | MGNI | S 10b5-1 | 40,238 | $43.36 | $1,744,720 | 475,157 Direct | -7.81% | Disposed | -45.8% (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 |
|---|---|---|---|---|---|---|---|
| Aug. 6, 2026 | MGNI | Employee Stock Option (Right to Buy) | Common Stock (20,000) | $5.16 | Feb. 27, 2029 | 20,000 | Disposed |
| Jan. 2, 2024 | MGNI | Performance Stock Units | Common Stock (40,602) | — | — | 40,602 | Acquired |
| Jan. 1, 2023 | MGNI | Performance Stock Units | Common Stock (40,602) | — | — | 40,602 | Acquired |
| Feb. 1, 2022 | MGNI | Employee Stock Option (right to buy) | Common Stock (68,886) | $13.90 | Feb. 1, 2032 | 68,886 | Acquired |
| May 26, 2021 | MGNI | Stock Option (Right to Buy) | Common Stock (1,442) | $3.96 | June 8, 2021 | 1,442 | Disposed |
| May 26, 2021 | MGNI | Stock Option (Right to Buy) | Common Stock (2,291) | $3.95 | Dec. 5, 2023 | 22,971 | Disposed |
| May 26, 2021 | MGNI | Stock Option (Right to Buy) | Common Stock (5,410) | $7.74 | July 31, 2023 | 5,410 | Disposed |
| May 26, 2021 | MGNI | Stock Option (Right to Buy) | Common Stock (7,212) | $5.46 | March 5, 2023 | 7,212 | Disposed |
| May 26, 2021 | MGNI | Stock Option (Right to Buy) | Common Stock (2,884) | $4.64 | July 19, 2022 | 2,884 | Disposed |
| May 26, 2021 | MGNI | Stock Option (Right to Buy) | Common Stock (2,884) | $4.64 | July 26, 2022 | 2,884 | Disposed |
| April 1, 2021 | MGNI | Employee Stock Option (right to buy) | Common Stock (17,726) | $42.80 | April 1, 2031 | 17,726 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 11 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Sept. 25, 2020 | MGNI | Common Stock | 520,271 | Indirect |
| Sept. 25, 2020 | MGNI | Stock Option (Right to Buy)→ Common Stock (1,442) | 1,442 | Direct |
| Sept. 25, 2020 | MGNI | Stock Option (Right to Buy)→ Common Stock (1,442) | 1,442 | Direct |
| Sept. 25, 2020 | MGNI | Stock Option (Right to Buy)→ Common Stock (2,884) | 2,884 | Direct |
| Sept. 25, 2020 | MGNI | Stock Option (Right to Buy)→ Common Stock (2,884) | 2,884 | Direct |
| Sept. 25, 2020 | MGNI | Stock Option (Right to Buy)→ Common Stock (7,212) | 7,212 | Direct |
| Sept. 25, 2020 | MGNI | Stock Option (Right to Buy)→ Common Stock (5,410) | 5,410 | Direct |
| Sept. 25, 2020 | MGNI | Stock Option (Right to Buy)→ Common Stock (22,971) | 22,971 | Direct |
| Sept. 25, 2020 | MGNI | Stock Option (Right to Buy)→ Common Stock (56,137) | 56,137 | Direct |
| Sept. 25, 2020 | MGNI | Stock Option (Right to Buy)→ Common Stock (33,546) | 33,546 | Direct |
| Sept. 25, 2020 | MGNI | Stock Option (Right to Buy)→ Common Stock (69,470) | 69,470 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $600,000 | $21,240 | $2,902,469 | — | $581,040 | — | $10,635 | $4,115,384 |
| 2024 | $490,000 | — | $1,524,735 | — | $371,229 | — | $10,485 | $2,396,449 |
| 2023 | $490,000 | — | $1,745,371 | — | $285,170 | — | $10,035 | $2,530,576 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.