Michael G. Barrett
CIK 1100612 · View on SEC EDGAR ↗
Insider
First SEC filing: June 4, 2026 · Latest: June 4, 2026
On this page
Insider at
Insider transactions
0 buys (P)
5 sells (S)
Net:
$-13,639,790
+ 46 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
46 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 6, 2026 | MGNI | S 10b5-1 | 293,968 | $22.72 | $6,678,953 | 403,074 Direct | -42.17% | Disposed | 8.3% (price as of 2026-08-19) |
| July 15, 2026 | MGNI | S 10b5-1 | 38,596 | $20.35 | $785,429 | 403,074 Direct | -8.74% | Disposed | 20.9% (price as of 2026-08-19) |
| June 29, 2026 | MGNI | S 10b5-1 | 75,000 | $19.50 | $1,462,500 | 403,074 Direct | -15.69% | Disposed | 26.2% (price as of 2026-08-19) |
| June 16, 2026 | MGNI | S 10b5-1 | 100,000 | $17.50 | $1,750,000 | 403,074 Direct | -19.88% | Disposed | 40.6% (price as of 2026-08-19) |
| June 15, 2026 | MGNI | S 10b5-1 | 178,596 | $16.59 | $2,962,908 | 403,074 Direct | -30.70% | Disposed | 48.3% (price as of 2026-08-19) |
| Nov. 15, 2023 | MGNI | S 10b5-1 | 75,000 | $7.80 | $585,000 | 1,219,203 Direct | -5.80% | Disposed | 215.4% (price as of 2026-08-19) |
| Aug. 16, 2023 | MGNI | S | 35,869 | $8.31 | $298,071 | 1,294,203 Direct | -2.70% | Disposed | 196.0% (price as of 2026-08-19) |
| Aug. 15, 2023 | MGNI | S 10b5-1 | 75,000 | $8.52 | $639,000 | 1,330,072 Direct | -5.34% | Disposed | 188.7% (price as of 2026-08-19) |
| July 11, 2023 | MGNI | S 10b5-1 | 25,000 | $15.02 | $375,500 | 1,405,072 Direct | -1.75% | Disposed | 63.8% (price as of 2026-08-19) |
| May 31, 2023 | MGNI | S 10b5-1 | 75,000 | $11.69 | $876,750 | 1,430,072 Direct | -4.98% | Disposed | 110.4% (price as of 2026-08-19) |
| May 16, 2023 | MGNI | S | 24,679 | $10.88 | $268,508 | 1,505,072 Direct | -1.61% | Disposed | 126.1% (price as of 2026-08-19) |
| March 15, 2023 | MGNI | S 10b5-1 | 75,000 | $8.39 | $629,250 | 1,459,509 Direct | -4.89% | Disposed | 193.2% (price as of 2026-08-19) |
| Nov. 15, 2022 | MGNI | S 10b5-1 | 7,214 | $11.86 | $85,558 | 1,430,236 Direct | -0.50% | Disposed | 107.4% (price as of 2026-08-19) |
| Nov. 15, 2022 | MGNI | S 10b5-1 | 67,786 | $11.55 | $782,928 | 1,437,450 Direct | -4.50% | Disposed | 113.0% (price as of 2026-08-19) |
| Aug. 16, 2021 | MGNI | S | 6,341 | $26.82 | $170,066 | 1,342,429 Direct | -0.47% | Disposed | -8.3% (price as of 2026-08-19) |
| Aug. 16, 2021 | MGNI | S 10b5-1 | 9,729 | $28.47 | $276,985 | 1,348,770 Direct | -0.72% | Disposed | -13.6% (price as of 2026-08-19) |
| Aug. 16, 2021 | MGNI | S 10b5-1 | 65,271 | $27.81 | $1,815,187 | 1,358,499 Direct | -4.58% | Disposed | -11.5% (price as of 2026-08-19) |
| May 17, 2021 | MGNI | S | 105,138 | $25.98 | $2,731,485 | 1,423,770 Direct | -6.88% | Disposed | -5.3% (price as of 2026-08-19) |
| April 5, 2021 | MGNI | S 10b5-1 | 518 | $43.51 | $22,538 | 1,526,678 Direct | -0.03% | Disposed | -43.5% (price as of 2026-08-19) |
| April 5, 2021 | MGNI | S 10b5-1 | 2,841 | $42.39 | $120,430 | 1,527,196 Direct | -0.19% | Disposed | -42.0% (price as of 2026-08-19) |
| April 5, 2021 | MGNI | S 10b5-1 | 2,926 | $41.51 | $121,458 | 1,530,037 Direct | -0.19% | Disposed | -40.7% (price as of 2026-08-19) |
| April 5, 2021 | MGNI | S 10b5-1 | 16,933 | $40.28 | $682,061 | 1,532,963 Direct | -1.09% | Disposed | -38.9% (price as of 2026-08-19) |
| April 5, 2021 | MGNI | S 10b5-1 | 51,782 | $39.48 | $2,044,353 | 1,549,896 Direct | -3.23% | Disposed | -37.7% (price as of 2026-08-19) |
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 | Stock Option (right to buy) | Common Stock (293,968) | $5.80 | March 17, 2027 | 293,968 | Disposed |
| July 15, 2026 | MGNI | Employee Stock Option (Right to Buy) | Common Stock (38,596) | $5.80 | March 17, 2027 | 38,596 | Disposed |
| June 29, 2026 | MGNI | Employee Stock Option (Right to Buy) | Common Stock (75,000) | $5.80 | March 17, 2027 | 75,000 | Disposed |
| June 16, 2026 | MGNI | Employee Stock Option (Right to Buy) | Common Stock (100,000) | $5.80 | March 17, 2027 | 100,000 | Disposed |
| June 15, 2026 | MGNI | Employee Stock Option (Right to Buy) | Common Stock (178,596) | $5.80 | March 17, 2027 | 178,596 | Disposed |
| June 3, 2026 | OUT | Restricted Share Units | Common Stock (5,918) | — | — | 5,918 | Acquired |
| Jan. 9, 2026 | MGNI | Performance Stock Units | Common Stock (213,750) | — | — | 213,750 | Disposed |
| Jan. 1, 2026 | MGNI | Stock Option (Right to Buy) | Common Stock (90,909) | $16.23 | Jan. 1, 2036 | 90,909 | Acquired |
| Jan. 1, 2026 | MGNI | Performance Stock Units | Common Stock (122,864) | — | — | 122,864 | Acquired |
| Sept. 18, 2025 | OUT | Restricted Share Units | Common Stock (6,047) | — | — | 6,047 | Acquired |
| Jan. 2, 2024 | MGNI | Stock Option (Right to Buy) | Common Stock (129,870) | $9.20 | Jan. 2, 2034 | 129,870 | Acquired |
| Jan. 2, 2024 | MGNI | Performance Stock Units | Common Stock (169,173) | — | — | 169,173 | Acquired |
| April 4, 2023 | MGNI | Performance Stock Units | Common Stock (138,014) | — | — | 138,014 | Disposed |
| Jan. 1, 2023 | MGNI | Stock Option (Right to Buy) | Common Stock (129,870) | $10.59 | Jan. 1, 2033 | 129,870 | Acquired |
| Jan. 1, 2023 | MGNI | Performance Stock Units | Common Stock (169,173) | — | — | 169,173 | Acquired |
| Feb. 1, 2022 | MGNI | Performance Stock Units | Common Stock (86,806) | — | — | 86,806 | Acquired |
| Feb. 1, 2022 | MGNI | Stock Option (right to buy) | Common Stock (172,216) | $13.90 | Feb. 1, 2032 | 172,216 | Acquired |
| Aug. 26, 2021 | MGNI | Performance Stock Units | Common Stock (379,635) | — | — | 379,635 | Acquired |
| April 1, 2021 | MGNI | Performance Stock Units | Common Stock (26,291) | — | — | 26,291 | Acquired |
| April 1, 2021 | MGNI | Employee Stock Option (right to buy) | Common Stock (54,358) | $42.80 | April 1, 2031 | 54,358 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
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 | $650,000 | $23,010 | $3,601,632 | $927,883 | $629,460 | — | $10,635 | $5,842,620 |
| 2024 | $625,000 | — | $3,111,848 | $823,337 | $676,438 | — | $10,485 | $5,247,108 |
| 2023 | $625,000 | — | $3,541,462 | $943,752 | $519,625 | — | $10,035 | $5,639,874 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.