MAGNITE, INC.
Total Trades
129
Buys
2
Sells
112
Largest Trade
N/A
Insiders
15
Institutional Funds
249
Inst. Value
$1M+
Activist Filings
19
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | SELL | $100K–$500K | 22K | $12.00 | Feb 18, 2026 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | EXERCISE | $50K–$100K | 17K | $4.92 | Dec 19, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | SELL | $100K–$500K | 17K | $17.00 | Dec 19, 2025 |
| Buckley Sean Patrick | President, Revenue | SELL | $15K–$50K | 2K | $14.50 | Nov 26, 2025 |
| Spillane Robert F | Director | SELL | $100K–$500K | 13K | $14.22 | Nov 21, 2025 |
| Buckley Sean Patrick | President, Revenue | SELL | $50K–$100K | 4K | $13.36 | Nov 19, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | SELL | $100K–$500K | 11K | $13.23 | Nov 19, 2025 |
| Caine Paul | Director | SELL | $100K–$500K | 5K | $20.00 | Oct 28, 2025 |
| Caine Paul | Director | SELL | $100K–$500K | 8K | $25.00 | Sep 19, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | SELL | $100K–$500K | 9K | $24.50 | Sep 19, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | SELL | $100K–$500K | 6K | $23.94 | Sep 17, 2025 |
| Caine Paul | Director | SELL | $100K–$500K | 5K | $23.60 | Sep 12, 2025 |
| Buckley Sean Patrick | President, Revenue | SELL | $1M+ | 40K | $25.09 | Sep 10, 2025 |
| Gephart Brian | CHIEF ACCOUNTING O… | SELL | $500K+ | 28K | $24.71 | Sep 5, 2025 |
| Buonasera David | CHIEF TECHNOLOGY O… | SELL | $50K–$100K | 3K | $25.37 | Sep 4, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | EXERCISE | $100K–$500K | 25K | $4.92 | Sep 4, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | SELL | $500K+ | 25K | $24.69 | Sep 4, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | SELL | $100K–$500K | 12K | $26.07 | Aug 29, 2025 |
| Evans Katie Seitz | President | SELL | $500K+ | 22K | $25.52 | Aug 29, 2025 |
| Yu Diane | Director | SELL | $500K+ | 20K | $25.23 | Aug 27, 2025 |
| Caine Paul | Director | SELL | $100K–$500K | 8K | $25.00 | Aug 26, 2025 |
| Evans Katie Seitz | President | SELL | $100K–$500K | 8K | $26.00 | Aug 26, 2025 |
| BARRETT MICHAEL G. | CEO | SELL | $1M+ | 71K | $23.27 | Jul 17, 2025 |
| Caine Paul | Director | SELL | $100K–$500K | 5K | $23.53 | Jul 11, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | SELL | $1M+ | 43K | $25.00 | Jul 8, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | EXERCISE | $15K–$50K | 8K | $4.92 | Jul 8, 2025 |
| Evans Katie Seitz | President | SELL | $500K+ | 24K | $23.32 | Jul 2, 2025 |
| Evans Katie Seitz | President | EXERCISE | $50K–$100K | 16K | $3.61 | Jul 2, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | SELL | $100K–$500K | 18K | $22.00 | Jul 2, 2025 |
| Day David | CHIEF FINANCIAL OF… | SELL | $100K–$500K | 22K | $22.00 | Jul 2, 2025 |
| Buonasera David | CHIEF TECHNOLOGY O… | SELL | $100K–$500K | 9K | $22.00 | Jul 2, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | SELL | $500K+ | 45K | $20.00 | Jun 26, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | EXERCISE | $15K–$50K | 8K | $1.97 | Jun 26, 2025 |
| Caine Paul | Director | SELL | $100K–$500K | 5K | $20.00 | Jun 26, 2025 |
| BARRETT MICHAEL G. | CEO | SELL | $1M+ | 300K | $20.01 | Jun 26, 2025 |
| Day David | CHIEF FINANCIAL OF… | SELL | $1M+ | 71K | $20.46 | Jun 26, 2025 |
| Day David | CHIEF FINANCIAL OF… | EXERCISE | $100K–$500K | 71K | $5.28 | Jun 26, 2025 |
| Rossman James | Director | SELL | $1M+ | 137K | $18.78 | Jun 20, 2025 |
| Day David | CHIEF FINANCIAL OF… | SELL | $500K+ | 38K | $18.95 | Jun 20, 2025 |
| Day David | CHIEF FINANCIAL OF… | EXERCISE | $100K–$500K | 38K | $4.92 | Jun 20, 2025 |
| Evans Katie Seitz | President | EXERCISE | $50K–$100K | 20K | $3.61 | Jun 18, 2025 |
| Evans Katie Seitz | President | SELL | $100K–$500K | 20K | $18.50 | Jun 18, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | SELL | $100K–$500K | 17K | $17.50 | Jun 18, 2025 |
| BARRETT MICHAEL G. | CEO | SELL | $1M+ | 75K | $18.26 | Jun 18, 2025 |
| Spillane Robert F | Director | SELL | $100K–$500K | 15K | $17.57 | Jun 12, 2025 |
| Saltz Aaron | CHIEF LEGAL OFFICER | SELL | $100K–$500K | 15K | $16.71 | Jun 6, 2025 |
| Evans Katie Seitz | President | SELL | $500K+ | 35K | $17.36 | Jun 6, 2025 |
| Evans Katie Seitz | President | EXERCISE | $50K–$100K | 20K | $3.61 | Jun 6, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | EXERCISE | $15K–$50K | 8K | $1.97 | Jun 6, 2025 |
| Soroca Adam Lee | CHIEF PRODUCT OFFI… | SELL | $100K–$500K | 8K | $17.70 | Jun 6, 2025 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 249 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| VANGUARD GROUP INC | 13.6M | $1M+ | SH |
| Capital Research Global Investors | 12.9M | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 5.3M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 3.3M | $1M+ | SH |
| STATE STREET CORP | 3.1M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 3.0M | $1M+ | SH |
| KENNEDY CAPITAL MANAGEMENT LLC | 1.4M | $1M+ | SH |
| Maestria Partners LLC | 1.4M | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.2M | $1M+ | SH |
| ROYCE & ASSOCIATES LP | 1.2M | $1M+ | SH |
| Stephens Investment Management Group LLC | 1.1M | $1M+ | SH |
| Nuveen, LLC | 937K | $1M+ | SH |
| BALYASNY ASSET MANAGEMENT L.P. | 873K | $1M+ | SH |
| J. Goldman & Co LP | 783K | $1M+ | SH |
| Schonfeld Strategic Advisors LLC | 780K | $1M+ | SH |
| Penn Capital Management Company, LLC | 695K | $1M+ | SH |
| NOMURA ASSET MANAGEMENT CO LTD | 623K | $1M+ | SH |
| Kopion Asset Management, LLC | 614K | $1M+ | SH |
| APIS CAPITAL ADVISORS, LLC | 604K | $1M+ | SH |
| Pillsbury Lake Capital LLC | 584K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Capital Research Global Investors
SC 13G · Feb 12, 2026
9.0%
12.9M shares
Wellington Management Group LLP
SC 13G · Feb 10, 2026
6.0%
8.6M shares
SC 13G/A · Dec 5, 2025
5.7%
8.1M shares
Capital Research Global Investors
SC 13G/A · Nov 13, 2025
4.9%
7.0M shares
SC 13G/A · Oct 6, 2025
10.3%
14.7M shares
SC 13G/A · Jul 8, 2025
12.2%
17.2M shares
Capital Research Global Investors
SC 13G/A · May 13, 2025
9.0%
12.9M shares
SC 13G · May 12, 2025
6.8%
9.7M shares
Capital Research Global Investors
SC 13G · Feb 13, 2025
5.5%
7.7M shares
SC 13G/A · Nov 12, 2024
0.0%
0 shares
SC 13G/A · Nov 12, 2024
2.7%
3.8M shares
Granahan Investment Management LLC
SC 13G/A · Feb 14, 2024
4.9%
6.7M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
9.2%
12.7M shares
SC 13G/A · Jan 26, 2024
7.3%
10.0M shares
SC 13D/A · Jul 14, 2023
4.1%
5.6M shares
Granahan Investment Management LLC
SC 13G/A · Feb 14, 2023
7.8%
10.4M shares
SC 13G/A · Jan 31, 2023
6.7%
8.9M shares
SC 13D · Nov 10, 2022
5.2%
6.9M shares
Granahan Investment Management LLC
SC 13G · Feb 14, 2022
6.4%
8.5M shares