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MGNI
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Magnite, Inc.

MGNI · Communication Services · Magnite, Inc., together with its subsidiaries, operates an independent omni-channel sell-side advertising platform in the United States and…

Magnite, Inc. (MGNI), in the Communication Services sector, has 36 disclosed filings on Paydirt over the trailing twelve months from 13 corporate insiders: 0 purchases and 36 sales. Filers took a median of 1 day from execution to disclosure, and the most recent trade was executed Nov 5 and filed Nov 6. The most active filer was Paul Caine with 6 filings. Data as of Nov 8 2026.

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Filings, ttm
36
0 buys · 36 sells
Traders, ttm
13
13 insiders
Volume, ttmiDollar value disclosed in the window
$26.3M
estimated for Congress, as filed for insiders
Median delay
1d
execution to disclosure
Last traded
Nov 5
Filed Nov 6
ADViAverage daily dollar volume
$72.0M
market data
Share price · 12M
$27.39 (+88.1%)
$27.52$19.36$11.20Nov 10 2025May 12Nov 6

Adjusted for splits and dividends.

Volume by month
$15.3M$7.6M$0Dec 2024Jun 2025Dec 2025Jun 2026Dec 2024 · sells $3.0MJan 2025 · sells $227KFeb 2025 · sells $5.2MMar 2025 · sells $344KMay 2025 · sells $715KJun 2025 · sells $15.3MJul 2025 · sells $4.5MAug 2025 · sells $5.3MSep 2025 · sells $2.8MOct 2025 · sells $100KNov 2025 · sells $321KDec 2025 · sells $283KFeb 2026 · sells $258KMay 2026 · sells $133KJun 2026 · sells $6.3MJul 2026 · sells $2.9MAug 2026 · sells $11.9MSep 2026 · sells $3.8MOct 2026 · sells $316KNov 2026 · sells $412K
Buys $0 Sells $64.1M

Estimated for Congress, as filed for insiders · by filing month · past 24 months

Who filed · past 24 months
PC Paul Caine Director 13 filings · 0 buys, 13 sales AS Adam Lee Soroca CHIEF PRODUCT OFFICER 13 filings · 0 buys, 13 sales MB Michael G. Barrett CEO 12 filings · 0 buys, 12 sales SB Sean Patrick Buckley See Remarks 11 filings · 0 buys, 11 sales KE Katie Seitz Evans See Remarks 11 filings · 0 buys, 11 sales AS Aaron Saltz CHIEF LEGAL OFFICER 11 filings · 0 buys, 11 sales DB David Buonasera CHIEF TECHNOLOGY OFFICER 8 filings · 0 buys, 8 sales DD David Day CHIEF FINANCIAL OFFICER 7 filings · 0 buys, 7 sales
All 16 filers RS Robert F Spillane Director 5 filings · 0 buys, 5 sales BG Brian Gephart CHIEF ACCOUNTING OFFICER 4 filings · 0 buys, 4 sales DK Douglas S Knopper Director 4 filings · 0 buys, 4 sales RL Rachel Lam Director 2 filings · 0 buys, 2 sales DP David T. Pearson Director 2 filings · 0 buys, 2 sales JR James Rossman Director 2 filings · 0 buys, 2 sales SH Sarah Patricia Harden Director 1 filing · 0 buys, 1 sale DY Diane Yu Director 1 filing · 0 buys, 1 sale
Recent filings
Sean Patrick BuckleySALE See Remarks $297K
10,991 sh × $27.00
Exec Nov 5
Filed Nov 6 · 4:23 PM ET
David BuonaseraSALE CHIEF TECHNOLOGY OFFICER $115K
4,272 sh × $27.00
Exec Nov 5
Filed Nov 6 · 4:21 PM ET
Paul CaineSALE Director $316K
12,500 sh × $25.29
Exec Oct 12
Filed Oct 14 · 4:30 PM ET
Paul CaineSALE Director $199K
7,500 sh × $26.50
Exec Sep 17
Filed Sep 18 · 4:06 PM ET
Douglas S KnopperSALE Director $981K
37,337 sh × $26.28
Exec Sep 17
Filed Sep 18 · 4:05 PM ET
Robert F SpillaneSALE Director $246K
10,363 sh × $23.76
Exec Sep 14
Filed Sep 16 · 4:20 PM ET
Katie Seitz EvansSALE See Remarks $336K
13,997 sh × $24.00
Exec Sep 11
Filed Sep 11 · 4:19 PM ET
Aaron SaltzSALE CHIEF LEGAL OFFICER $936K
40,000 sh × $23.41
Exec Sep 10
Filed Sep 11 · 4:15 PM ET
Paul CaineSALE Director $118K
5,000 sh × $23.53
Exec Sep 10
Filed Sep 11 · 4:11 PM ET
Katie Seitz EvansSALE See Remarks $1.0M
43,385 sh across 2 lots
Exec Sep 8
Filed Sep 10 · 4:39 PM ET
Sarah Patricia HardenSALE Director $1.2M
48,986 sh across 2 lots
Exec Aug 26
Filed Aug 28 · 6:36 PM ET
Paul CaineSALE Director $188K
7,500 sh × $25.00
Exec Aug 14
Filed Aug 18 · 4:16 PM ET
Sean Patrick BuckleySALE See Remarks $201K
8,271 sh × $24.31
Exec Aug 17
Filed Aug 18 · 4:14 PM ET
Brian GephartSALE CHIEF ACCOUNTING OFFICER $308K
12,479 sh × $24.68
Exec Aug 10
Filed Aug 12 · 4:54 PM ET
Rachel LamSALE Director $242K
10,000 sh × $24.16
Exec Aug 10
Filed Aug 12 · 4:51 PM ET
Paul CaineSALE Director $122K
5,000 sh × $24.35
Exec Aug 10
Filed Aug 12 · 4:49 PM ET
Sean Patrick BuckleySALE See Remarks $1.6M
67,179 sh across 2 lots
Exec Aug 6
Filed Aug 7 · 5:14 PM ET
Douglas S KnopperSALE Director $848K
37,337 sh × $22.72
Exec Aug 6
Filed Aug 7 · 5:10 PM ET
Katie Seitz EvansSALE See Remarks $480K
20,000 sh × $24.00
Exec Aug 6
Filed Aug 7 · 5:06 PM ET
Michael G. BarrettSALE CEO $6.7M
293,968 sh × $22.72
Exec Aug 6
Filed Aug 7 · 5:00 PM ET
Michael G. BarrettSALE CEO $785K
38,596 sh × $20.35
Exec Jul 15
Filed Jul 17 · 5:00 PM ET
Paul CaineSALE Director $103K
5,000 sh × $20.64
Exec Jul 10
Filed Jul 14 · 5:50 PM ET
Sean Patrick BuckleySALE See Remarks $404K
19,233 sh × $21.03
Exec Jul 7
Filed Jul 9 · 4:27 PM ET
David BuonaseraSALE CHIEF TECHNOLOGY OFFICER $188K
9,376 sh × $20.00
Exec Jul 1
Filed Jul 2 · 7:07 PM ET
Michael G. BarrettSALE CEO $1.5M
75,000 sh × $19.50
Exec Jun 29
Filed Jul 1 · 4:49 PM ET