MGNI Insider Trading

Magnite, Inc. · full profile →Last filing Jul 15, 2026
Net Selling · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$9.7M
8 insiders
Net Insider Flow
-$9.7M
open market, 180d
Reporting Insiders
8
18 P/S transactions
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Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jul 15, 2026Barrett Michael G.CEO, DirectorOption exercise(M)39K$0
Jul 15, 2026Barrett Michael G.CEO, DirectorSell(S)39K$20.35$785K
Jul 15, 2026Barrett Michael G.CEO, DirectorOption exercise(M)39K$5.80$224K
Jul 10, 2026Caine PaulDirectorSell(S)5K$20.64$103K
Jul 7, 2026Buckley Sean PatrickSee RemarksSell(S)19K$21.03$404K
Jul 7, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERSell(S)1K$21.00$26K
Jul 1, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERSell(S)9K$20.00$188K
Jun 29, 2026Barrett Michael G.CEO, DirectorOption exercise(M)75K$5.80$435K
Jun 29, 2026Barrett Michael G.CEO, DirectorSell(S)75K$19.50$1.5M
Jun 29, 2026Barrett Michael G.CEO, DirectorOption exercise(M)75K$0
Jun 17, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERSell(S)1K$19.00$27K
Jun 17, 2026Buckley Sean PatrickSee RemarksSell(S)19K$19.00$365K
Jun 16, 2026Knopper Douglas SDirectorSell(S)37K$18.10$676K
Jun 16, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERSell(S)11K$18.00$202K
Jun 16, 2026Barrett Michael G.CEO, DirectorOption exercise(M)100K$5.80$580K
Jun 16, 2026Barrett Michael G.CEO, DirectorSell(S)100K$17.50$1.8M
Jun 16, 2026Barrett Michael G.CEO, DirectorOption exercise(M)100K$0
Jun 15, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERSell(S)1K$17.00$18K
Jun 15, 2026Barrett Michael G.CEO, DirectorOption exercise(M)179K$5.80$1.0M
Jun 15, 2026Barrett Michael G.CEO, DirectorSell(S)179K$16.59$3.0M
Jun 15, 2026Barrett Michael G.CEO, DirectorOption exercise(M)179K$0
Jun 10, 2026Pearson David T.DirectorSell(S)11K$15.65$168K
Jun 10, 2026Knopper Douglas SDirectorSell(S)11K$15.73$169K
Jun 8, 2026Rossman JamesDirectorGrant(A)14K$0
Jun 8, 2026Lam RachelDirectorGrant(A)14K$0
Jun 8, 2026Pearson David T.DirectorGrant(A)14K$0
Jun 8, 2026Caine PaulDirectorGrant(A)14K$0
Jun 8, 2026Yu DianeDirectorGrant(A)14K$0
Jun 8, 2026Spillane Robert FDirectorGrant(A)14K$0
Jun 8, 2026Harden Sarah PatriciaDirectorGrant(A)14K$0
Jun 8, 2026Knopper Douglas SDirectorGrant(A)14K$0
Jun 1, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERSell(S)1K$15.00$21K
May 19, 2026Spillane Robert FDirectorSell(S)10K$13.33$133K
May 15, 2026Evans Katie SeitzPresident, OperationsTax withholding(F)11K$12.82$144K
May 15, 2026Barrett Michael G.CEO, DirectorTax withholding(F)10K$12.82$133K
May 15, 2026Buckley Sean PatrickPresident, RevenueTax withholding(F)12K$12.82$154K
May 15, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERTax withholding(F)8K$12.82$107K
May 15, 2026Day DavidCHIEF FINANCIAL OFFICERTax withholding(F)14K$12.82$182K
May 15, 2026Gephart BrianCHIEF ACCOUNTING OFFICERTax withholding(F)4K$12.82$49K
May 15, 2026Saltz AaronCHIEF LEGAL OFFICERTax withholding(F)6K$12.82$72K
Feb 18, 2026Soroca Adam LeeCHIEF PRODUCT OFFICERSell(S)22K$12.00$258K
Feb 15, 2026Barrett Michael G.CEO, DirectorTax withholding(F)24K$11.70$276K
Feb 15, 2026Day DavidCHIEF FINANCIAL OFFICERTax withholding(F)31K$11.70$358K
Feb 15, 2026Evans Katie SeitzPresident, OperationsTax withholding(F)27K$11.70$321K
Feb 15, 2026Soroca Adam LeeCHIEF PRODUCT OFFICERTax withholding(F)19K$11.70$222K
Feb 15, 2026Gephart BrianCHIEF ACCOUNTING OFFICERTax withholding(F)6K$11.70$72K
Feb 15, 2026Saltz AaronCHIEF LEGAL OFFICERTax withholding(F)13K$11.70$149K
Feb 15, 2026Buckley Sean PatrickPresident, RevenueTax withholding(F)27K$11.70$315K
Feb 15, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERTax withholding(F)17K$11.70$201K
Jan 9, 2026Barrett Michael G.CEO, DirectorOption exercise(M)214K$0
Jan 9, 2026Barrett Michael G.CEO, DirectorTax withholding(F)110K$16.17$1.8M
Jan 9, 2026Barrett Michael G.CEO, DirectorOption exercise(M)214K$0
Jan 9, 2026Day DavidCHIEF FINANCIAL OFFICEROption exercise(M)73K$0
Jan 9, 2026Day DavidCHIEF FINANCIAL OFFICERTax withholding(F)35K$16.17$569K
Jan 9, 2026Day DavidCHIEF FINANCIAL OFFICEROption exercise(M)73K$0
Jan 9, 2026Evans Katie SeitzPresident, OperationsTax withholding(F)27K$16.17$434K
Jan 9, 2026Evans Katie SeitzPresident, OperationsOption exercise(M)51K$0
Jan 9, 2026Evans Katie SeitzPresident, OperationsOption exercise(M)51K$0
Jan 9, 2026Soroca Adam LeeCHIEF PRODUCT OFFICERTax withholding(F)25K$16.17$410K
Jan 9, 2026Soroca Adam LeeCHIEF PRODUCT OFFICEROption exercise(M)51K$0
Jan 9, 2026Soroca Adam LeeCHIEF PRODUCT OFFICEROption exercise(M)51K$0
Jan 9, 2026Saltz AaronCHIEF LEGAL OFFICEROption exercise(M)28K$0
Jan 9, 2026Saltz AaronCHIEF LEGAL OFFICERTax withholding(F)15K$16.17$243K
Jan 9, 2026Saltz AaronCHIEF LEGAL OFFICEROption exercise(M)28K$0
Jan 9, 2026Buckley Sean PatrickPresident, RevenueTax withholding(F)30K$16.17$491K
Jan 9, 2026Buckley Sean PatrickPresident, RevenueOption exercise(M)64K$0
Jan 9, 2026Buckley Sean PatrickPresident, RevenueOption exercise(M)64K$0
Jan 9, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICEROption exercise(M)23K$0
Jan 9, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERTax withholding(F)12K$16.17$199K
Jan 9, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICEROption exercise(M)23K$0
Jan 1, 2026Barrett Michael G.CEO, DirectorGrant(A)94K$0
Jan 1, 2026Barrett Michael G.CEO, DirectorGrant(A)91K$0
Jan 1, 2026Barrett Michael G.CEO, DirectorGrant(A)123K$0
Jan 1, 2026Day DavidCHIEF FINANCIAL OFFICERGrant(A)132K$0
Jan 1, 2026Day DavidCHIEF FINANCIAL OFFICERGrant(A)44K$0
Jan 1, 2026Evans Katie SeitzPresident, OperationsGrant(A)127K$0
Jan 1, 2026Evans Katie SeitzPresident, OperationsGrant(A)43K$0
Jan 1, 2026Soroca Adam LeeCHIEF PRODUCT OFFICERGrant(A)77K$0
Jan 1, 2026Soroca Adam LeeCHIEF PRODUCT OFFICERGrant(A)26K$0
Jan 1, 2026Gephart BrianCHIEF ACCOUNTING OFFICERGrant(A)39K$0
Jan 1, 2026Saltz AaronCHIEF LEGAL OFFICERGrant(A)66K$0
Jan 1, 2026Saltz AaronCHIEF LEGAL OFFICERGrant(A)22K$0
Jan 1, 2026Buckley Sean PatrickPresident, RevenueGrant(A)127K$0
Jan 1, 2026Buckley Sean PatrickPresident, RevenueGrant(A)43K$0
Jan 1, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERGrant(A)77K$0
Jan 1, 2026Buonasera DavidCHIEF TECHNOLOGY OFFICERGrant(A)26K$0
Dec 17, 2025Soroca Adam LeeCHIEF PRODUCT OFFICEROption exercise(M)17K$4.92$82K
Dec 17, 2025Soroca Adam LeeCHIEF PRODUCT OFFICERSell(S)17K$17.00$283K
Dec 17, 2025Soroca Adam LeeCHIEF PRODUCT OFFICEROption exercise(M)17K$0
Nov 24, 2025Buckley Sean PatrickPresident, RevenueSell(S)2K$14.50$32K
Nov 21, 2025Spillane Robert FDirectorSell(S)13K$14.22$178K
Nov 18, 2025Soroca Adam LeeCHIEF PRODUCT OFFICERSell(S)11K$13.23$144K
Nov 18, 2025Buckley Sean PatrickPresident, RevenueSell(S)4K$13.36$59K
Nov 15, 2025Barrett Michael G.CEO, DirectorTax withholding(F)12K$14.15$173K
Nov 15, 2025Day DavidCHIEF FINANCIAL OFFICERTax withholding(F)13K$14.15$187K
Nov 15, 2025Evans Katie SeitzPresident, OperationsTax withholding(F)10K$14.15$147K
Nov 15, 2025Soroca Adam LeeCHIEF PRODUCT OFFICERTax withholding(F)9K$14.15$133K
Nov 15, 2025Gephart BrianCHIEF ACCOUNTING OFFICERTax withholding(F)4K$14.15$50K
Nov 15, 2025Saltz AaronCHIEF LEGAL OFFICERTax withholding(F)6K$14.15$81K
Nov 15, 2025Buckley Sean PatrickPresident, RevenueTax withholding(F)12K$14.15$165K

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-01-042026-07-20. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).