MAGNITE, INC. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Soroca Adam Lee | CHIEF PRODUCT OFFICER | Sale | 16,656 | $17.00 | $283,152 | 326,114 | Dec 17, 2025 |
| Buckley Sean Patrick | President, Revenue | Sale | 2,213 | $14.50 | $32,089 | 268,912 | Nov 24, 2025 |
| Spillane Robert F | — | Sale | 12,500 | $14.22 | $177,750 | 53,917 | Nov 21, 2025 |
| Buckley Sean Patrick | President, Revenue | Tax Withholding | 11,642 | $14.15 | $164,734 | 275,551 | Nov 18, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFICER | Tax Withholding | 9,422 | $14.15 | $133,321 | 336,971 | Nov 18, 2025 |
| Evans Katie Seitz | President, Operations | Tax Withholding | 10,354 | $14.15 | $146,509 | 383,735 | Nov 15, 2025 |
| Buonasera David | CHIEF TECHNOLOGY OFFICER | Tax Withholding | 7,129 | $14.15 | $100,875 | 231,824 | Nov 15, 2025 |
| Gephart Brian | CHIEF ACCOUNTING OFFICER | Tax Withholding | 3,549 | $14.15 | $50,218 | 89,349 | Nov 15, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | Tax Withholding | 5,695 | $14.15 | $80,584 | 209,384 | Nov 15, 2025 |
| BARRETT MICHAEL G. | CEO | Tax Withholding | 12,198 | $14.15 | $172,602 | 237,659 | Nov 15, 2025 |
| Day David | CHIEF FINANCIAL OFFICER | Tax Withholding | 13,197 | $14.15 | $186,738 | 368,909 | Nov 15, 2025 |
| Caine Paul | — | Sale | 5,000 | $20.00 | $100,000 | 153,603 | Oct 24, 2025 |
| Caine Paul | — | Sale | 7,500 | $25.00 | $187,500 | 158,603 | Sep 19, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | Sale | 8,522 | $24.50 | $208,789 | 215,079 | Sep 19, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | Sale | 6,180 | $23.94 | $147,949 | 223,601 | Sep 15, 2025 |
| Caine Paul | — | Sale | 1,189 | $23.91 | $28,429 | 166,103 | Sep 10, 2025 |
| Buckley Sean Patrick | President, Revenue | Sale | 20,000 | $24.61 | $492,200 | 287,193 | Sep 8, 2025 |
| Gephart Brian | CHIEF ACCOUNTING OFFICER | Sale | 27,671 | $24.71 | $683,750 | 92,898 | Sep 4, 2025 |
| Buonasera David | CHIEF TECHNOLOGY OFFICER | Sale | 2,950 | $25.37 | $74,842 | 238,629 | Sep 3, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFICER | Option Exercise | 24,986 | $4.92 | $122,931 | 371,379 | Sep 2, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | Sale | 12,403 | $26.07 | $323,346 | 229,781 | Aug 29, 2025 |
| Evans Katie Seitz | President, Operations | Sale | 21,509 | $25.52 | $548,910 | 394,089 | Aug 27, 2025 |
| Yu Diane | — | Sale | 20,000 | $25.23 | $504,600 | 67,481 | Aug 26, 2025 |
| Caine Paul | — | Sale | 7,500 | $25.00 | $187,500 | 171,103 | Aug 25, 2025 |
| Evans Katie Seitz | President, Operations | Sale | 8,345 | $26.00 | $216,970 | 415,598 | Aug 25, 2025 |
| Day David | CHIEF FINANCIAL OFFICER | Sale | 13,366 | $23.85 | $318,779 | 382,106 | Aug 18, 2025 |
| Evans Katie Seitz | President, Operations | Sale | 10,487 | $23.85 | $250,115 | 423,943 | Aug 18, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | Sale | 5,770 | $23.85 | $137,615 | 242,184 | Aug 18, 2025 |
| Buckley Sean Patrick | President, Revenue | Sale | 9,315 | $23.42 | $218,157 | 327,193 | Aug 18, 2025 |
| Buonasera David | CHIEF TECHNOLOGY OFFICER | Sale | 7,834 | $23.85 | $186,841 | 241,579 | Aug 18, 2025 |
| Gephart Brian | CHIEF ACCOUNTING OFFICER | Sale | 2,961 | $23.85 | $70,620 | 120,569 | Aug 18, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFICER | Sale | 10,579 | $23.47 | $248,289 | 346,393 | Aug 18, 2025 |
| BARRETT MICHAEL G. | CEO | Sale | 35,951 | $23.85 | $857,431 | 249,857 | Aug 18, 2025 |
| Day David | CHIEF FINANCIAL OFFICER | Gift | 26,374 | — | — | 395,472 | Aug 15, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | Sale | 13,860 | $23.34 | $323,492 | 247,954 | Aug 14, 2025 |
| Lam Rachel | — | Sale | 15,000 | $22.25 | $333,750 | 226,822 | Aug 12, 2025 |
| Caine Paul | — | Sale | 5,000 | $22.29 | $111,450 | 178,603 | Aug 11, 2025 |
| BARRETT MICHAEL G. | CEO | Sale | 70,900 | $23.27 | $1,649,843 | 285,808 | Jul 15, 2025 |
| Caine Paul | — | Sale | 5,000 | $23.53 | $117,650 | 183,603 | Jul 10, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFICER | Option Exercise | 8,327 | $4.92 | $40,969 | 409,256 | Jul 3, 2025 |
| Evans Katie Seitz | President, Operations | Sale | 8,358 | $22.00 | $183,876 | 450,567 | Jun 30, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | Sale | 17,574 | $22.00 | $386,628 | 261,814 | Jun 30, 2025 |
| Day David | CHIEF FINANCIAL OFFICER | Sale | 21,682 | $22.00 | $477,004 | 421,846 | Jun 30, 2025 |
| Buonasera David | CHIEF TECHNOLOGY OFFICER | Sale | 9,289 | $22.00 | $204,358 | 249,413 | Jun 30, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFICER | Sale | 44,519 | $20.00 | $890,380 | 400,927 | Jun 24, 2025 |
| Caine Paul | — | Sale | 5,000 | $20.00 | $100,000 | 188,603 | Jun 24, 2025 |
| BARRETT MICHAEL G. | CEO | Sale | 300,000 | $20.01 | $6,003,000 | 356,708 | Jun 24, 2025 |
| Day David | CHIEF FINANCIAL OFFICER | Sale | 35,000 | $19.95 | $698,250 | 443,528 | Jun 24, 2025 |
| Rossman James | — | Sale | 137,007 | $18.78 | $2,572,991 | 93,679 | Jun 18, 2025 |
| Day David | CHIEF FINANCIAL OFFICER | Sale | 38,146 | $18.95 | $722,867 | 443,528 | Jun 18, 2025 |