Rubicon Project Inc

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Rubicon Project Inc
TickerMGNI
CIK #0001595974
CUSIP55955D100
SectorTechnology - Services-Computer Programming, Data Processing, Etc.
Address12181 Bluff Creek Drive, 4th Floor, Los Angeles, CA 90094
Source [EDGAR]
CIK Filing 2011 - 2024
[0001595974] 10-K
[0001595974] 10-Q
[0001595974] 3
[0001595974] 4
[0001595974] 8-K
[0001595974] SC 13D
[0001595974] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Edenbrook Capital LLC Magnite Inc [2022-11-10] 5.17
Granahan Investment Management LLC Magnite Inc [2022-02-14] 6.44
Vanguard Group Inc Magnite Inc [2022-02-10] 8.97
FMR LLC Magnite Inc [2022-02-09] 0.0
Bertelsmann SE & Co KGAA Magnite Inc [2021-05-10] 9.6
BlackRock Inc Rubicon Project Inc [2020-02-07] 6.6
Outerbridge Capital Management LLC Rubicon Project Inc [2019-12-23] 5.51
Outerbridge Capital Management LLC Rubicon Project Inc [2019-12-02] 4.41
Dimensional Fund Advisors LP Rubicon Project Inc [2019-02-08] 5.06
BlackRock Inc Rubicon Project Inc [2018-02-01] 5.5
Divisar Capital Management LLC Rubicon Project Inc [2017-08-08] 5.1
Rubicon Project Inc Rubicon Project Inc [2016-02-16] 3.6
Bank of Montreal /Can/ Rubicon Project Inc [2016-02-16] 6.8454
PRIMECAP Management Co/CA/ Rubicon Project Inc [2015-12-07] 5.3
40 North Management LLC Rubicon Project Inc [2015-11-27] 6.5
Addante Frank Rubicon Project Inc [2015-04-09] 7.6
Clearstone Venture Partners III-A LP Rubicon Project Inc [2015-02-17] 17.2
News Corp Rubicon Project Inc [2015-02-13] 13.2
Mayfield XII Management LLC Rubicon Project Inc [2015-01-30] 11.4
Form 3/4/5 Filer 2011 - 2024
Magnite Inc
Day David
Evans Katie Seitz
TROE Lisa L
Buckley Sean Patrick
Barrett Michael G
Buonasera David
Soroca Adam Lee
Saltz Aaron
Gephart Brian
Dove James Allen
Knopper Douglas S
Lam Rachel
Rossman James
Caine Paul
Pearson David T
Yu Diane
Harden Sarah Patricia
Frankenberg Robert J
Spillane Robert F
Prusz Joseph R
Kershaw Thomas
Hughes Shawna
Filip Eve
Tuller Blima
Zagorski Mark
Addante Frank
Feldman Jonathan
Coleman Lewis W
Mandal Sumant
Copple Brian William
Raifman Gregory R
Richter James Neal
Patz Harry Jr
Tappin Todd L
Clearstone Venture Management III, L.L.C.
Clearstone Venture Partners III-A LP
Clearstone Venture Partners III-B, a Delaware Multiple Serie
Mayfield XII Management, L.L.C.
Beck James T
Mayfield XII A Delaware L P
Mayfield Principals Fund XII
Mayfield Associates Fund XII
Chaddha Navin
Vasan Robert T
MOHN JARL
News Corp
Form 13F Holdings
Firm Period DFND Voting Shares
Vanguard Group Inc [2023-03-31] SOLE 0.0 12,222,571.0
Granahan Investment Management LLC [2023-03-31] SOLE 8,057,504.0 9,133,115.0
BlackRock Inc. [2023-03-31] SOLE 8,573,377.0 8,851,159.0
FMR LLC [2023-03-31] DFND 6,801,958.0 6,804,918.0
Edenbrook Capital LLC [2023-03-31] DFND 6,465,243.0 6,465,243.0
Parallax Volatility Advisers LP [2023-03-31] SOLE 5,392,086.0 5,392,086.0
Dimensional Fund Advisors LP [2023-03-31] SOLE 3,884,407.0 3,970,868.0
Bank of New York Mellon Corp [2023-03-31] DFND 2,458,450.0 2,967,266.0
State Street Corp [2023-03-31] DFND 2,456,739.0 2,731,178.0
Frontier Capital Management Co LLC [2023-03-31] SOLE 790,960.0 2,676,617.0
Geode Capital Management LLC [2023-03-31] DFND 2,462,541.0 2,462,541.0
Nuveen Asset Management LLC [2023-03-31] DFND 2,320,788.0 2,322,652.0
Victory Capital Management Inc [2023-03-31] SOLE 1,691,554.0 1,722,828.0
Kennedy Capital Management LLC [2023-03-31] SOLE 1,521,363.0 1,623,214.0
Wellington Management Group LLP [2023-03-31] DFND 0.0 1,604,597.0
Royce & Associates LP [2023-03-31] SOLE 1,534,041.0 1,534,041.0
Citadel Advisors LLC [2023-03-31] DFND 1,251,461.0 1,251,461.0
Northern Trust Corp [2023-03-31] DFND 64,982.0 1,231,073.0
Nordea Investment Management AB [2023-03-31] SOLE 0.0 1,046,227.0
Charles Schwab Investment Management Inc [2023-03-31] SOLE 907,084.0 907,084.0
Kopion Asset Management LLC [2023-03-31] SOLE 0.0 866,446.0
Bank of New York Mellon Corp [2023-03-31] OTR 846,424.0 846,424.0
Williams Jones Wealth Management LLC [2023-03-31] SOLE 0.0 820,036.0
Penn Capital Management Company LLC [2023-03-31] SOLE 817,948.0 817,948.0
Goldman Sachs Group Inc [2023-03-31] DFND 747,930.0 747,990.0
JPMorgan Chase & Co [2023-03-31] DFND 506,713.0 739,388.0
Renaissance Technologies LLC [2023-03-31] SOLE 718,054.0 718,054.0
New York State Common Retirement Fund [2023-03-31] SOLE 704,918.0 704,918.0
Silvercrest Asset Management Group LLC [2023-03-31] SOLE 400,912.0 702,389.0
Susquehanna International Group LLP [2023-03-31] DFND 245,886.0 672,686.0
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