Over the past 12 months, Magnite insiders sold $26.65 million of stock on the open market (1.29Mn shares) and made no open-market purchases.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | David Day | Chief Financial Officer | 452,861 | 0 | 452,861 | 10.6% | 18 Aug, 2026 |
| 2 | Katie Seitz Evans | President, Operations | 441,800 | 0 | 441,800 | 10.3% | 11 Sep, 2026 |
| 3 | Michael G. Barrett | Ceo | 392,670 | 0 | 392,670 | 9.2% | 18 Aug, 2026 |
| 4 | Adam Lee Soroca | Chief Product Officer | 388,425 | 0 | 388,425 | 9.1% | 18 Feb, 2026 |
| 5 | Joseph R Prusz | Chief Revenue Officer, Dv+ | 311,083 | 0 | 311,083 | 7.3% | 16 Feb, 2022 |
| 6 | Sean Patrick Buckley | President, Revenue | 293,060 | 0 | 293,060 | 6.8% | 18 Aug, 2026 |
| 7 | David Buonasera | Chief Technology Officer | 245,155 | 0 | 245,155 | 5.7% | 16 Sep, 2026 |
| 8 | Rachel Lam | Director | 230,620 | 0 | 230,620 | 5.4% | 12 Aug, 2026 |
| 9 | Aaron Saltz | Chief Legal Officer | 224,389 | 0 | 224,389 | 5.2% | 11 Sep, 2026 |
| 10 | James Allen Dove | Chief Technology Officer | 191,071 | 0 | 191,071 | 4.5% | 17 Aug, 2022 |
| 11 | Brian Gephart | Chief Financial Officer | 167,010 | 0 | 167,010 | 3.9% | 02 Oct, 2026 |
| 12 | Paul Caine | Director | 124,901 | 0 | 124,901 | 2.9% | 14 Oct, 2026 |
| 13 | Robert J Frankenberg | Director | 119,090 | 0 | 119,090 | 2.8% | 16 Jun, 2023 |
| 14 | Sarah Patricia Harden | Director | 114,751 | 0 | 114,751 | 2.7% | 28 Aug, 2026 |
| 15 | Lisa L Troe | Director | 114,218 | 0 | 114,218 | 2.7% | 12 Jun, 2023 |
| 16 | James Rossman | Director | 107,477 | 0 | 107,477 | 2.5% | 10 Jun, 2026 |
| 17 | Haas Sullivan | Chief Accounting Officer | 97,554 | 0 | 97,554 | 2.3% | 02 Oct, 2026 |
| 18 | Diane Yu | Director | 81,279 | 0 | 81,279 | 1.9% | 10 Jun, 2026 |
| 19 | David T. Pearson | Director | 79,001 | 0 | 79,001 | 1.8% | 10 Jun, 2026 |
| 20 | Robert F Spillane | Director | 57,715 | 0 | 57,715 | 1.3% | 16 Sep, 2026 |
| 21 | Douglas S Knopper | Director | 51,136 | 0 | 51,136 | 1.2% | 18 Sep, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 12 Oct, 2026 | Paul Caine | Director | Disposed S | 12,500 | $25.29 | $316.13K | 124,901 | Direct |
| 01 Oct, 2026 | Haas Sullivan | Chief Accounting Officer | Acquired A | 24,641 | $0.00 | $0 | 97,554 | Direct |
| 01 Oct, 2026 | Brian Gephart | Chief Financial Officer | Acquired A | 64,682 | $0.00 | $0 | 167,010 | Direct |
| 17 Sep, 2026 | Paul Caine | Director | Disposed S | 7,500 | $26.50 | $198.75K | 137,401 | Direct |
| 17 Sep, 2026 | Douglas S Knopper | Director | Disposed S | 37,337 | $26.28 | $981.22K | 51,136 | Direct |
| 14 Sep, 2026 | Robert F Spillane | Director | Acquired M | 10,363 | $5.17 | $53.58K | 68,078 | Direct |
| 14 Sep, 2026 | David Buonasera | Chief Technology Officer | Disposed S | 1,165 | $24.00 | $27.96K | 245,155 | Direct |
| 14 Sep, 2026 | Robert F Spillane | Director | Disposed S | 10,363 | $23.76 | $246.22K | 57,715 | Direct |
| 14 Sep, 2026 | Robert F Spillane | Director | Disposed M | 10,363 | $0.00 | $0 | 0 | Direct |
| 10 Sep, 2026 | Aaron Saltz | Chief Legal Officer | Disposed S | 40,000 | $23.41 | $936.40K | 224,389 | Direct |
| 11 Sep, 2026 | Katie Seitz Evans | Officer | Disposed S | 13,997 | $24.00 | $335.93K | 441,800 | Direct |
| 10 Sep, 2026 | Paul Caine | Director | Disposed S | 5,000 | $23.53 | $117.65K | 144,901 | Direct |
| 08 Sep, 2026 | Katie Seitz Evans | Officer | Acquired M | 13,546 | $5.16 | $69.90K | 499,182 | Direct |
| 08 Sep, 2026 | Katie Seitz Evans | Officer | Disposed S | 32,285 | $23.63 | $762.89K | 466,897 | Direct |
| 09 Sep, 2026 | Katie Seitz Evans | Officer | Disposed S | 11,100 | $23.46 | $260.41K | 455,797 | Direct |
| 08 Sep, 2026 | Katie Seitz Evans | Officer | Disposed M | 13,546 | $0.00 | $0 | 0 | Direct |
| 01 Sep, 2026 | David Buonasera | Chief Technology Officer | Disposed S | 5,371 | $23.42 | $125.79K | 247,363 | Direct |
| 02 Sep, 2026 | David Buonasera | Chief Technology Officer | Disposed S | 1,043 | $25.00 | $26.08K | 246,320 | Direct |
| 26 Aug, 2026 | Sarah Patricia Harden | Director | Disposed S | 30,550 | $23.31 | $712.12K | 133,187 | Direct |
| 28 Aug, 2026 | Sarah Patricia Harden | Director | Disposed S | 18,436 | $24.00 | $442.46K | 114,751 | Direct |