Magnite's three largest insider shareholders as of March 23, 2026 are Katie Seitz Evans (President, Operations, 508.04K shares), Thomas Kershaw (Chief Technology Officer, 473.76K shares), Sean Patrick Buckley (President, Revenue, 403.00K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Katie Seitz Evans | President, Operations | 508,044 | 0 | 18 Feb, 2026 |
| Thomas Kershaw | Chief Technology Officer | 473,763 | 0 | 19 May, 2021 |
| Sean Patrick Buckley | President, Revenue | 402,999 | 0 | 18 Feb, 2026 |
| Adam Lee Soroca | Chief Product Officer | 388,425 | 0 | 18 Feb, 2026 |
| Joseph R Prusz | Chief Revenue Officer, Dv+ | 311,083 | 0 | 16 Feb, 2022 |
| David Buonasera | Chief Technology Officer | 302,095 | 0 | 18 Feb, 2026 |
| Aaron Saltz | Chief Legal Officer | 275,643 | 0 | 18 Feb, 2026 |
| Rachel Lam | 226,822 | 0 | 14 Aug, 2025 | |
| James Allen Dove | Chief Technology Officer | 191,071 | 0 | 17 Aug, 2022 |
| Shawna Hughes | Chief Accounting Officer | 178,129 | 0 | 19 May, 2021 |
| Sarah Patricia Harden | 149,939 | 0 | 06 Jun, 2025 | |
| Brian Gephart | Chief Accounting Officer | 122,385 | 0 | 18 Feb, 2026 |
| Lisa L Troe | 114,218 | 0 | 12 Jun, 2023 | |
| James Rossman | 93,679 | 0 | 20 Jun, 2025 | |
| David T. Pearson | 75,969 | 0 | 06 Jun, 2025 | |
| Diane Yu | 67,481 | 0 | 27 Aug, 2025 | |
| Robert F Spillane | 53,917 | 0 | 21 Nov, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 15 Feb, 2026 | Adam Lee Soroca | Common Stock | D | 18,933 | $11.70 | 409,954 | D | F |
| 15 Feb, 2026 | Brian Gephart | Common Stock | D | 6,149 | $11.70 | 122,385 | D | F |
| 15 Feb, 2026 | David Buonasera | Common Stock | D | 17,137 | $11.70 | 302,095 | D | F |
| 15 Feb, 2026 | Katie Seitz Evans | Common Stock | D | 27,428 | $11.70 | 508,044 | D | F |
| 15 Feb, 2026 | Sean Patrick Buckley | Common Stock | D | 26,942 | $11.70 | 402,999 | D | F |
| 15 Feb, 2026 | Aaron Saltz | Common Stock | D | 12,761 | $11.70 | 275,643 | D | F |
| 18 Feb, 2026 | Adam Lee Soroca | Common Stock | D | 21,529 | $12.00 | 388,425 | D | S |
| 09 Jan, 2026 | Sean Patrick Buckley | Common Stock | A | 64,125 | $0.00 | 460,310 | D | M |
| 09 Jan, 2026 | Katie Seitz Evans | Common Stock | A | 51,300 | $0.00 | 562,308 | D | M |
| 09 Jan, 2026 | Adam Lee Soroca | Common Stock | A | 51,300 | $0.00 | 454,217 | D | M |
| 09 Jan, 2026 | Aaron Saltz | Common Stock | A | 28,215 | $0.00 | 303,430 | D | M |
| 09 Jan, 2026 | David Buonasera | Common Stock | A | 22,935 | $0.00 | 331,562 | D | M |
| 09 Jan, 2026 | Sean Patrick Buckley | Common Stock | D | 30,369 | $16.17 | 429,941 | D | F |
| 09 Jan, 2026 | David Buonasera | Common Stock | D | 12,330 | $16.17 | 319,232 | D | F |
| 09 Jan, 2026 | Aaron Saltz | Common Stock | D | 15,026 | $16.17 | 288,404 | D | F |
| 09 Jan, 2026 | Adam Lee Soroca | Common Stock | D | 25,330 | $16.17 | 428,887 | D | F |
| 09 Jan, 2026 | Katie Seitz Evans | Common Stock | D | 26,836 | $16.17 | 535,472 | D | F |
| 09 Jan, 2026 | Adam Lee Soroca | Performance Stock Units | D | 51,300 | $0.00 | 0 | D | M |
| 09 Jan, 2026 | Aaron Saltz | Performance Stock Units | D | 28,215 | $0.00 | 0 | D | M |
| 09 Jan, 2026 | Sean Patrick Buckley | Performance Stock Units | D | 64,125 | $0.00 | 0 | D | M |