Magnite, Inc. MGNI
We take great care to ensure that the data presented and summarized in this overview for MAGNITE, INC. is accurate and up-to-date, based on a comprehensive analysis of 13F filing forms for institutional ownership and form 4 filings for insider transactions. Please note that this data may differ from other sources and should not be relied upon as the sole basis for investment decisions.
Top Institutions Holding MGNI
View all-
Vanguard Group Inc Valley Forge, PA14.7MShares$207 Million0.0% of portfolio
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Black Rock Inc. New York, NY9.7MShares$137 Million0.0% of portfolio
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Capital Research Global Investors Los Angeles, CA6.98MShares$98.8 Million0.03% of portfolio
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Wellington Management Group LLP Boston, MA5.14MShares$72.8 Million0.02% of portfolio
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American Century Companies Inc Kansas City, MO4.59MShares$65 Million0.05% of portfolio
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Boston Partners Boston, MA4.45MShares$63 Million0.11% of portfolio
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Nuveen Asset Management, LLC Chicago, IL3.94MShares$55.8 Million0.02% of portfolio
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Granahan Investment Management, LLC Waltham, MA3.87MShares$54.8 Million3.99% of portfolio
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Dimensional Fund Advisors LP Austin, TX3.57MShares$50.5 Million0.02% of portfolio
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Geode Capital Management, LLC Boston, MA3.4MShares$48.1 Million0.0% of portfolio
Latest Institutional Activity in MGNI
Top Purchases
Top Sells
About MGNI
Magnite, Inc. operates an independent sell-side advertising platform in the United States and internationally. The company's platform offers applications and services for sellers of digital advertising inventory or publishers that own and operate CTV channels, applications, websites, and other digital media properties, to manage and monetize their inventory; and provides applications and services for buyers, including advertisers, agencies, agency trading desks, and demand side platforms to buy digital advertising inventory. It markets its technology solutions to buyers and sellers through a sales teams that operate from various locations. The company was formerly known as The Rubicon Project, Inc. and changed name to Magnite, Inc. in July 2020. Magnite, Inc. was incorporated in 2007 and is headquartered in New York, New York.
Insider Transactions at MGNI
Insider Transaction List
View all| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Jan 09
2026
|
Michael G. Barrett CEO |
SELL
Payment of exercise price or tax liability
|
Direct |
109,742
-20.12%
|
$1,755,872
$16.17 P/Share
|
|
Jan 09
2026
|
Michael G. Barrett CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
213,750
+28.15%
|
-
|
|
Jan 09
2026
|
Katie Seitz Evans President, Operations |
SELL
Payment of exercise price or tax liability
|
Direct |
26,836
-4.77%
|
$429,376
$16.17 P/Share
|
|
Jan 09
2026
|
Katie Seitz Evans President, Operations |
BUY
Exercise of conversion of derivative security
|
Direct |
51,300
+8.36%
|
-
|
|
Jan 09
2026
|
Sean Patrick Buckley President, Revenue |
SELL
Payment of exercise price or tax liability
|
Direct |
30,369
-6.6%
|
$485,904
$16.17 P/Share
|
|
Jan 09
2026
|
Sean Patrick Buckley President, Revenue |
BUY
Exercise of conversion of derivative security
|
Direct |
64,125
+12.23%
|
-
|
|
Jan 09
2026
|
Aaron Saltz CHIEF LEGAL OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
15,026
-4.95%
|
$240,416
$16.17 P/Share
|
|
Jan 09
2026
|
Aaron Saltz CHIEF LEGAL OFFICER |
BUY
Exercise of conversion of derivative security
|
Direct |
28,215
+8.51%
|
-
|
|
Jan 09
2026
|
David Buonasera CHIEF TECHNOLOGY OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
12,330
-3.72%
|
$197,280
$16.17 P/Share
|
|
Jan 09
2026
|
David Buonasera CHIEF TECHNOLOGY OFFICER |
BUY
Exercise of conversion of derivative security
|
Direct |
22,935
+6.47%
|
-
|
|
Jan 09
2026
|
Adam Lee Soroca CHIEF PRODUCT OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
25,330
-5.58%
|
$405,280
$16.17 P/Share
|
|
Jan 09
2026
|
Adam Lee Soroca CHIEF PRODUCT OFFICER |
BUY
Exercise of conversion of derivative security
|
Direct |
51,300
+10.15%
|
-
|
|
Jan 09
2026
|
David Day CHIEF FINANCIAL OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
35,169
-6.14%
|
$562,704
$16.17 P/Share
|
|
Jan 09
2026
|
David Day CHIEF FINANCIAL OFFICER |
BUY
Exercise of conversion of derivative security
|
Direct |
72,675
+11.25%
|
-
|
|
Jan 01
2026
|
Michael G. Barrett CEO |
BUY
Grant, award, or other acquisition
|
Direct |
94,044
+22.09%
|
-
|
|
Jan 01
2026
|
Katie Seitz Evans President, Operations |
BUY
Grant, award, or other acquisition
|
Direct |
127,273
+19.94%
|
-
|
|
Jan 01
2026
|
Adam Lee Soroca CHIEF PRODUCT OFFICER |
BUY
Grant, award, or other acquisition
|
Direct |
76,803
+16.01%
|
-
|
|
Jan 01
2026
|
David Buonasera CHIEF TECHNOLOGY OFFICER |
BUY
Grant, award, or other acquisition
|
Direct |
76,803
+19.93%
|
-
|
|
Jan 01
2026
|
Aaron Saltz CHIEF LEGAL OFFICER |
BUY
Grant, award, or other acquisition
|
Direct |
65,831
+19.3%
|
-
|
|
Jan 01
2026
|
Brian Gephart CHIEF ACCOUNTING OFFICER |
BUY
Grant, award, or other acquisition
|
Direct |
39,185
+23.36%
|
-
|
Last 12 Months Summary
| Grant, award, or other acquisition | 825K shares |
|---|---|
| Exercise of conversion of derivative security | 892K shares |
| Payment of exercise price or tax liability | 631K shares |
|---|---|
| Open market or private sale | 1.72M shares |
| Bona fide gift | 26.4K shares |