Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| MGNI | Buonasera David | CHIEF TECHNOLOGY OFFICER | 09/14/2026 | Verkauf | 24.00 | 1,165 | 27,960 | Form 4 |
| MGNI | Spillane Robert F | Director | 09/14/2026 | Verkauf | 23.76 | 10,363 | 246,225 | Form 4 |
| MGNI | Spillane Robert F | Director | 09/14/2026 | Optionsausübung | 5.17 | 10,363 | 53,577 | Form 4 |
| MGNI | Evans Katie Seitz | See Remarks | 09/11/2026 | Verkauf | 24.00 | 13,997 | 335,928 | Form 4 |
| MGNI | Saltz Aaron | CHIEF LEGAL OFFICER | 09/10/2026 | Verkauf | 23.41 | 40,000 | 936,400 | Form 4 |
| MGNI | Caine Paul | Director | 09/10/2026 | Verkauf | 23.53 | 5,000 | 117,650 | Form 4 |
| MGNI | Evans Katie Seitz | See Remarks | 09/09/2026 | Verkauf | 23.46 | 11,100 | 260,406 | Form 4 |
| MGNI | Evans Katie Seitz | See Remarks | 09/08/2026 | Verkauf | 23.63 | 32,285 | 762,895 | Form 4 |
| MGNI | Evans Katie Seitz | See Remarks | 09/08/2026 | Optionsausübung | 5.16 | 13,546 | 69,897 | Form 4 |
| MGNI | Buonasera David | CHIEF TECHNOLOGY OFFICER | 09/02/2026 | Verkauf | 25.00 | 1,043 | 26,075 | Form 4 |
| MGNI | Buonasera David | CHIEF TECHNOLOGY OFFICER | 09/01/2026 | Verkauf | 23.42 | 5,371 | 125,789 | Form 4 |
| MGNI | Harden Sarah Patricia | Director | 08/28/2026 | Verkauf | 24.00 | 18,436 | 442,464 | Form 4 |
| MGNI | Harden Sarah Patricia | Director | 08/26/2026 | Verkauf | 23.31 | 30,550 | 712,121 | Form 4 |
| MGNI | Buckley Sean Patrick | See Remarks | 08/18/2026 | Verkauf | 25.00 | 2,759 | 68,975 | Form 4 |
| MGNI | Buckley Sean Patrick | See Remarks | 08/17/2026 | Verkauf | 24.31 | 8,271 | 201,068 | Form 4 |
| MGNI | Buonasera David | CHIEF TECHNOLOGY OFFICER | 08/15/2026 | Steuer-Abgabe | 24.73 | 8,102 | 200,362 | Form 4 |
| MGNI | Buckley Sean Patrick | See Remarks | 08/15/2026 | Steuer-Abgabe | 24.73 | 11,715 | 289,712 | Form 4 |
| MGNI | Saltz Aaron | CHIEF LEGAL OFFICER | 08/15/2026 | Steuer-Abgabe | 24.73 | 5,627 | 139,156 | Form 4 |
| MGNI | Gephart Brian | CHIEF ACCOUNTING OFFICER | 08/15/2026 | Steuer-Abgabe | 24.73 | 3,789 | 93,702 | Form 4 |
| MGNI | Evans Katie Seitz | See Remarks | 08/15/2026 | Steuer-Abgabe | 24.73 | 11,204 | 277,075 | Form 4 |
| MGNI | Day David | CHIEF FINANCIAL OFFICER | 08/15/2026 | Steuer-Abgabe | 24.73 | 14,170 | 350,424 | Form 4 |
| MGNI | Barrett Michael G. | CEO | 08/15/2026 | Steuer-Abgabe | 24.73 | 10,404 | 257,291 | Form 4 |
| MGNI | Caine Paul | Director | 08/14/2026 | Verkauf | 25.00 | 7,500 | 187,500 | Form 4 |
| MGNI | Day David | CHIEF FINANCIAL OFFICER | 08/13/2026 | Schenkung | — | 26,258 | — | Form 4 |
| MGNI | Gephart Brian | CHIEF ACCOUNTING OFFICER | 08/10/2026 | Verkauf | 24.68 | 12,479 | 307,982 | Form 4 |
| MGNI | Lam Rachel | Director | 08/10/2026 | Verkauf | 24.16 | 10,000 | 241,600 | Form 4 |
| MGNI | Caine Paul | Director | 08/10/2026 | Verkauf | 24.35 | 5,000 | 121,750 | Form 4 |
| MGNI | Buonasera David | CHIEF TECHNOLOGY OFFICER | 08/06/2026 | Verkauf | 25.00 | 871 | 21,775 | Form 4 |
| MGNI | Buonasera David | CHIEF TECHNOLOGY OFFICER | 08/06/2026 | Verkauf | 24.00 | 2,602 | 62,448 | Form 4 |
| MGNI | Buonasera David | CHIEF TECHNOLOGY OFFICER | 08/06/2026 | Verkauf | 22.81 | 4,176 | 95,255 | Form 4 |
| MGNI | Buckley Sean Patrick | See Remarks | 08/06/2026 | Verkauf | 23.00 | 19,237 | 442,451 | Form 4 |
| MGNI | Buckley Sean Patrick | See Remarks | 08/06/2026 | Verkauf | 25.09 | 47,942 | 1,202,865 | Form 4 |
| MGNI | Buckley Sean Patrick | See Remarks | 08/06/2026 | Optionsausübung | 13.90 | 28,703 | 398,972 | Form 4 |
| MGNI | Evans Katie Seitz | See Remarks | 08/06/2026 | Verkauf | 24.00 | 20,000 | 480,000 | Form 4 |
| MGNI | Evans Katie Seitz | See Remarks | 08/06/2026 | Optionsausübung | 5.16 | 20,000 | 103,200 | Form 4 |
| MGNI | Knopper Douglas S | Director | 08/06/2026 | Verkauf | 22.72 | 37,337 | 848,297 | Form 4 |
| MGNI | Barrett Michael G. | CEO | 08/06/2026 | Verkauf | 22.72 | 293,968 | 6,678,953 | Form 4 |
| MGNI | Barrett Michael G. | CEO | 08/06/2026 | Optionsausübung | 5.80 | 293,968 | 1,705,014 | Form 4 |
| MGNI | Barrett Michael G. | CEO | 07/15/2026 | Verkauf | 20.35 | 38,596 | 785,429 | Form 4 |
| MGNI | Barrett Michael G. | CEO | 07/15/2026 | Optionsausübung | 5.80 | 38,596 | 223,857 | Form 4 |
| MGNI | Caine Paul | Director | 07/10/2026 | Verkauf | 20.64 | 5,000 | 103,200 | Form 4 |
| MGNI | Buonasera David | CHIEF TECHNOLOGY OFFICER | 07/07/2026 | Verkauf | 21.00 | 1,224 | 25,704 | Form 4 |
| MGNI | Buckley Sean Patrick | See Remarks | 07/07/2026 | Verkauf | 21.03 | 19,233 | 404,470 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).