MGNI insider transaction filings
MAGNITE, INC. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-08-18. Screen MGNI transaction legs live →
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-18 | 4 | Buonasera David — CHIEF TECHNOLOGY OFFICER | Tax withholding (F): 8,102 @ $24.73 | EDGAR |
| 2026-08-18 | 4 | Gephart Brian — CHIEF ACCOUNTING OFFICER | Tax withholding (F): 3,789 @ $24.73 | EDGAR |
| 2026-08-18 | 4 | Saltz Aaron — CHIEF LEGAL OFFICER | Tax withholding (F): 5,627 @ $24.73 | EDGAR |
| 2026-08-18 | 4 | Evans Katie Seitz — See Remarks | Tax withholding (F): 11,204 @ $24.73 | EDGAR |
| 2026-08-18 | 4 | Caine Paul — Director | Sale (S): 7,500 @ $25 | EDGAR |
| 2026-08-18 | 4 | Day David — CHIEF FINANCIAL OFFICER | Tax withholding (F): 14,170 @ $24.73 | EDGAR |
| 2026-08-18 | 4 | BARRETT MICHAEL G. — CEO, Director | Tax withholding (F): 10,404 @ $24.73 | EDGAR |
| 2026-08-18 | 4 | Buckley Sean Patrick — See Remarks | Tax withholding (F): 11,715 @ $24.73 · Sale (S): 8,271 @ $24.31 · Sale (S): 2,759 @ $25 | EDGAR |
| 2026-08-14 | 4 | Day David — CHIEF FINANCIAL OFFICER | Gift (G): 26,258 @ $0 | EDGAR |
| 2026-08-12 | 4 | Gephart Brian — CHIEF ACCOUNTING OFFICER | Sale (S): 12,479 @ $24.68 | EDGAR |
| 2026-08-12 | 4 | Lam Rachel — Director | Sale (S): 10,000 @ $24.16 | EDGAR |
| 2026-08-12 | 4 | Caine Paul — Director | Sale (S): 5,000 @ $24.35 | EDGAR |
| 2026-08-07 | 4 | Buckley Sean Patrick — See Remarks | Option exercise (M): 28,703 @ $13.90 · Sale (S): 47,942 @ $25.09 · Sale (S): 19,237 @ $23 · Option exercise (M): 28,703 (derivative) @ $0 | EDGAR |
| 2026-08-07 | 4 | Knopper Douglas S — Director | Sale (S): 37,337 @ $22.72 | EDGAR |
| 2026-08-07 | 4 | Buonasera David — CHIEF TECHNOLOGY OFFICER | Sale (S): 4,176 @ $22.81 · Sale (S): 2,602 @ $24 · Sale (S): 871 @ $25 | EDGAR |
| 2026-08-07 | 4 | Evans Katie Seitz — See Remarks | Option exercise (M): 20,000 @ $5.16 · Sale (S): 20,000 @ $24 · Option exercise (M): 20,000 (derivative) @ $0 | EDGAR |
| 2026-08-07 | 4 | BARRETT MICHAEL G. — CEO, Director | Option exercise (M): 293,968 @ $5.80 · Sale (S): 293,968 @ $22.72 · Option exercise (M): 293,968 (derivative) @ $0 | EDGAR |
| 2026-07-17 | 4 | BARRETT MICHAEL G. — CEO, Director | Option exercise (M): 38,596 @ $5.80 · Sale (S): 38,596 @ $20.35 · Option exercise (M): 38,596 (derivative) @ $0 | EDGAR |
| 2026-07-14 | 4 | Caine Paul — Director | Sale (S): 5,000 @ $20.64 | EDGAR |
| 2026-07-09 | 4 | Buonasera David — CHIEF TECHNOLOGY OFFICER | Sale (S): 1,224 @ $21 | EDGAR |
| 2026-07-09 | 4 | Buckley Sean Patrick — See Remarks | Sale (S): 19,233 @ $21.03 | EDGAR |
| 2026-07-02 | 4 | Buonasera David — CHIEF TECHNOLOGY OFFICER | Sale (S): 9,376 @ $20 | EDGAR |
| 2026-07-01 | 4 | BARRETT MICHAEL G. — CEO, Director | Option exercise (M): 75,000 @ $5.80 · Sale (S): 75,000 @ $19.50 · Option exercise (M): 75,000 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | Buckley Sean Patrick — See Remarks | Sale (S): 19,233 @ $19 | EDGAR |
| 2026-06-17 | 4 | Buonasera David — CHIEF TECHNOLOGY OFFICER | Sale (S): 1,057 @ $17 · Sale (S): 11,233 @ $18 · Sale (S): 1,409 @ $19 | EDGAR |
| 2026-06-17 | 4 | Knopper Douglas S — Director | Sale (S): 37,337 @ $18.10 | EDGAR |
| 2026-06-17 | 4 | BARRETT MICHAEL G. — CEO, Director | Option exercise (M): 178,596 @ $5.80 · Sale (S): 178,596 @ $16.59 · Option exercise (M): 100,000 @ $5.80 · Sale (S): 100,000 @ $17.50 · Option exercise (M): 178,596 (derivative) @ $0 · Option exercise (M): 100,000 (derivative) @ $0 | EDGAR |
| 2026-06-10 | 4 | Yu Diane — Director | Grant/award (A): 13,798 @ $0 | EDGAR |
| 2026-06-10 | 4 | Spillane Robert F — Director | Grant/award (A): 13,798 @ $0 | EDGAR |
| 2026-06-10 | 4 | Harden Sarah Patricia — Director | Grant/award (A): 13,798 @ $0 | EDGAR |
| 2026-06-10 | 4 | Lam Rachel — Director | Grant/award (A): 13,798 @ $0 | EDGAR |
| 2026-06-10 | 4 | PEARSON DAVID T. — Director | Grant/award (A): 13,798 @ $0 · Sale (S): 10,766 @ $15.65 | EDGAR |
| 2026-06-10 | 4 | Caine Paul — Director | Grant/award (A): 13,798 @ $0 | EDGAR |
| 2026-06-10 | 4 | Knopper Douglas S — Director | Grant/award (A): 13,798 @ $0 · Sale (S): 10,766 @ $15.73 | EDGAR |
| 2026-06-10 | 4 | Rossman James — Director | Grant/award (A): 13,798 @ $0 | EDGAR |
| 2026-06-03 | 4 | Buonasera David — CHIEF TECHNOLOGY OFFICER | Sale (S): 1,409 @ $15 | EDGAR |
| 2026-05-21 | 4 | Spillane Robert F — Director | Sale (S): 10,000 @ $13.33 | EDGAR |
| 2026-05-19 | 4 | Buonasera David — CHIEF TECHNOLOGY OFFICER | Tax withholding (F): 8,335 @ $12.82 | EDGAR |
| 2026-05-19 | 4 | Buckley Sean Patrick — President, Revenue | Tax withholding (F): 12,019 @ $12.82 | EDGAR |
| 2026-05-19 | 4 | Saltz Aaron — CHIEF LEGAL OFFICER | Tax withholding (F): 5,627 @ $12.82 | EDGAR |
| 2026-05-19 | 4 | Gephart Brian — CHIEF ACCOUNTING OFFICER | Tax withholding (F): 3,789 @ $12.82 | EDGAR |
| 2026-05-19 | 4 | Evans Katie Seitz — President, Operations | Tax withholding (F): 11,204 @ $12.82 | EDGAR |
| 2026-05-19 | 4 | Day David — CHIEF FINANCIAL OFFICER | Tax withholding (F): 14,170 @ $12.82 | EDGAR |
| 2026-05-19 | 4 | BARRETT MICHAEL G. — CEO, Director | Tax withholding (F): 10,404 @ $12.82 | EDGAR |
| 2026-02-18 | 4 | Buonasera David — CHIEF TECHNOLOGY OFFICER | Tax withholding (F): 17,137 @ $11.70 | EDGAR |
| 2026-02-18 | 4 | Buckley Sean Patrick — President, Revenue | Tax withholding (F): 26,942 @ $11.70 | EDGAR |
| 2026-02-18 | 4 | Saltz Aaron — CHIEF LEGAL OFFICER | Tax withholding (F): 12,761 @ $11.70 | EDGAR |
| 2026-02-18 | 4 | Gephart Brian — CHIEF ACCOUNTING OFFICER | Tax withholding (F): 6,149 @ $11.70 | EDGAR |
| 2026-02-18 | 4 | Soroca Adam Lee — CHIEF PRODUCT OFFICER | Tax withholding (F): 18,933 @ $11.70 · Sale (S): 21,529 @ $12 | EDGAR |
| 2026-02-18 | 4 | Evans Katie Seitz — President, Operations | Tax withholding (F): 27,428 @ $11.70 | EDGAR |
Recent 8-K events — MAGNITE, INC.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-05 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-11 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-05-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-04-20 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-04-10 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-02-25 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-05 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-09-16 | 8-K | 7.01 — Regulation FD Disclosure 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-09-05 | 8-K | 1.01 — Entry into a Material Definitive Agreement | EDGAR |
| 2025-08-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
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