INSIDER
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Data sources

Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

RH CHAIN…
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
01Overview02Follow the Money03Daily Brief04Live05Congress06Corporate Insiders07Government Money08Political Influence09Institutions10Washington Network11Follow the Power12Disclosure Clock13AI Investigator14Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 425m ago
HOUSE PTR24m ago
SEC 13F24m ago
ROBINHOOD CHAIN24m ago
Public company

MGNIMAGNITE, INC.

CIK 0001595974

EDGAR filingsOpen in network
Disclosed transactions38
Buys / sells0 / 15
Max Insider Score41
Connections9with evidence

MGNI · disclosed activity on price

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
17
SH
Sullivan HaasCHIEF ACCOUNTING OFFICER
MGNIMAGNITE, INC.
Grant or award
A—
24.6K sh
Oct 1, 2026Oct 2, 2026
traded Oct 1, 2026
+1dSEC FORM 4

Evidence

Verified connections

  • In industryevidence
    Telecommunications & technologySEC SIC 7370 · Services-Computer Programming, Data Processing, Etc. · Nov 4, 2026
  • ← Insider ofevidence
    Sullivan HaasCHIEF ACCOUNTING OFFICER · Oct 2, 2026
  • ← Insider ofevidence
    Harden Sarah PatriciaDirector · Aug 28, 2026
  • ← Insider ofevidence
    Gephart BrianCHIEF ACCOUNTING OFFICER · Aug 12, 2026
11
BD
Buonasera DavidCHIEF TECHNOLOGY OFFICER
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL
$28K
1,165 sh
Sep 14, 2026
Sep 16, 2026
traded Sep 14, 2026
+2d
SEC FORM 4

Evidence

22
ES
Evans Katie SeitzSee Remarks
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$336K
14.0K sh
Sep 11, 2026Sep 11, 2026
traded Sep 11, 2026
+0dSEC FORM 4

Evidence

30
SA
Saltz AaronCHIEF LEGAL OFFICER
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$936K
40.0K sh
Sep 10, 2026Sep 11, 2026
traded Sep 10, 2026
+1dSEC FORM 4

Evidence

0
ES
Evans Katie SeitzSee Remarks
MGNIMAGNITE, INC.
Option exercise · 10b5-1 plan
M—
13.5K sh
Sep 8, 2026Sep 10, 2026
traded Sep 8, 2026
+2dSEC FORM 4

Evidence

2
ES
Evans Katie SeitzSee Remarks
MGNIMAGNITE, INC.
Option exercise · 10b5-1 plan
M$70K
13.5K sh
Sep 8, 2026Sep 10, 2026
traded Sep 8, 2026
+2dSEC FORM 4

Evidence

30
ES
Evans Katie SeitzSee Remarks
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$763K
32.3K sh
Sep 8, 2026Sep 10, 2026
traded Sep 8, 2026
+2dSEC FORM 4

Evidence

22
ES
Evans Katie SeitzSee Remarks
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$260K
11.1K sh
Sep 9, 2026Sep 10, 2026
traded Sep 9, 2026
+1dSEC FORM 4

Evidence

20
HP
Harden Sarah PatriciaDirector
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$712K
30.6K sh
Aug 26, 2026Aug 28, 2026
traded Aug 26, 2026
+2dSEC FORM 4

Evidence

21
HP
Harden Sarah PatriciaDirector
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$442K
18.4K sh
Aug 28, 2026Aug 28, 2026
traded Aug 28, 2026
+0dSEC FORM 4

Evidence

41
GB
Gephart BrianCHIEF ACCOUNTING OFFICER
MGNIMAGNITE, INC.
Open-market sale
SELL$308K
12.5K sh
Aug 10, 2026Aug 12, 2026
traded Aug 10, 2026
+2dSEC FORM 4

Evidence

18
BD
Buonasera DavidCHIEF TECHNOLOGY OFFICER
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$62K
2,602 sh
Aug 6, 2026Aug 7, 2026
traded Aug 6, 2026
+1dSEC FORM 4

Evidence

21
BP
Buckley Sean PatrickSee Remarks
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$442K
19.2K sh
Aug 6, 2026Aug 7, 2026
traded Aug 6, 2026
+1dSEC FORM 4

Evidence

15
BD
Buonasera DavidCHIEF TECHNOLOGY OFFICER
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$22K
871 sh
Aug 6, 2026Aug 7, 2026
traded Aug 6, 2026
+1dSEC FORM 4

Evidence

24
BP
Buckley Sean PatrickSee Remarks
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$1.20M
47.9K sh
Aug 6, 2026Aug 7, 2026
traded Aug 6, 2026
+1dSEC FORM 4

Evidence

7
BP
Buckley Sean PatrickSee Remarks
MGNIMAGNITE, INC.
Option exercise · 10b5-1 plan
M—
28.7K sh
Aug 6, 2026Aug 7, 2026
traded Aug 6, 2026
+1dSEC FORM 4

Evidence

5
BP
Buckley Sean PatrickSee Remarks
MGNIMAGNITE, INC.
Option exercise · 10b5-1 plan
M$399K
28.7K sh
Aug 6, 2026Aug 7, 2026
traded Aug 6, 2026
+1dSEC FORM 4

Evidence

18
BD
Buonasera DavidCHIEF TECHNOLOGY OFFICER
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$95K
4,176 sh
Aug 6, 2026Aug 7, 2026
traded Aug 6, 2026
+1dSEC FORM 4

Evidence

9
BP
Buckley Sean PatrickPresident, Revenue
MGNIMAGNITE, INC.
Option exercise
M—
64.1K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

13
ES
Evans Katie SeitzPresident, Operations
MGNIMAGNITE, INC.
Option exercise
M—
51.3K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

13
BD
Buonasera DavidCHIEF TECHNOLOGY OFFICER
MGNIMAGNITE, INC.
Option exercise
M—
22.9K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

12
BD
Buonasera DavidCHIEF TECHNOLOGY OFFICER
MGNIMAGNITE, INC.
Tax withholding
F$199K
12.3K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

15
BP
Buckley Sean PatrickPresident, Revenue
MGNIMAGNITE, INC.
Tax withholding
F$491K
30.4K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

5
BP
Buckley Sean PatrickPresident, Revenue
MGNIMAGNITE, INC.
Option exercise
M—
64.1K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

9
BD
Buonasera DavidCHIEF TECHNOLOGY OFFICER
MGNIMAGNITE, INC.
Option exercise
M—
22.9K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

16
SA
Saltz AaronCHIEF LEGAL OFFICER
MGNIMAGNITE, INC.
Tax withholding
F$243K
15.0K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

9
SA
Saltz AaronCHIEF LEGAL OFFICER
MGNIMAGNITE, INC.
Option exercise
M—
28.2K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

9
SL
Soroca Adam LeeCHIEF PRODUCT OFFICER
MGNIMAGNITE, INC.
Option exercise
M—
51.3K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

15
SL
Soroca Adam LeeCHIEF PRODUCT OFFICER
MGNIMAGNITE, INC.
Tax withholding
F$410K
25.3K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

19
ES
Evans Katie SeitzPresident, Operations
MGNIMAGNITE, INC.
Tax withholding
F$434K
26.8K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

9
ES
Evans Katie SeitzPresident, Operations
MGNIMAGNITE, INC.
Option exercise
M—
51.3K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

13
SA
Saltz AaronCHIEF LEGAL OFFICER
MGNIMAGNITE, INC.
Option exercise
M—
28.2K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

5
SL
Soroca Adam LeeCHIEF PRODUCT OFFICER
MGNIMAGNITE, INC.
Option exercise
M—
51.3K sh
Jan 9, 2026Jan 12, 2026
traded Jan 9, 2026
+3dSEC FORM 4

Evidence

7
SL
Soroca Adam LeeCHIEF PRODUCT OFFICER
MGNIMAGNITE, INC.
Option exercise · 10b5-1 plan
M—
16.7K sh
Dec 17, 2025Dec 19, 2025
traded Dec 17, 2025
+2dSEC FORM 4

Evidence

11
SL
Soroca Adam LeeCHIEF PRODUCT OFFICER
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$283K
16.7K sh
Dec 17, 2025Dec 19, 2025
traded Dec 17, 2025
+2dSEC FORM 4

Evidence

6
SL
Soroca Adam LeeCHIEF PRODUCT OFFICER
MGNIMAGNITE, INC.
Option exercise · 10b5-1 plan
M$82K
16.7K sh
Dec 17, 2025Dec 19, 2025
traded Dec 17, 2025
+2dSEC FORM 4

Evidence

5
BP
Buckley Sean PatrickPresident, Revenue
MGNIMAGNITE, INC.
Open-market sale · 10b5-1 plan
SELL$32K
2,213 sh
Nov 24, 2025Nov 26, 2025
traded Nov 24, 2025
+2dSEC FORM 4

Evidence

12
BD
Buonasera DavidCHIEF TECHNOLOGY OFFICER
MGNIMAGNITE, INC.
Tax withholding
F$101K
7,129 sh
Nov 15, 2025Nov 18, 2025
traded Nov 15, 2025
+3dSEC FORM 4

Evidence

  • ← Insider ofevidence
    Evans Katie SeitzPresident, Operations · Jan 12, 2026
  • ← Insider ofevidence
    Saltz AaronCHIEF LEGAL OFFICER · Jan 12, 2026
  • ← Insider ofevidence
    Soroca Adam LeeCHIEF PRODUCT OFFICER · Dec 19, 2025
  • ← Insider ofevidence
    Buckley Sean PatrickPresident, Revenue · Nov 26, 2025
  • ← Insider ofevidence
    Buonasera DavidCHIEF TECHNOLOGY OFFICER · Nov 18, 2025