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MGNI · Magnite, Inc.
> Ask across nine datasets ⌘K
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TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475
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MGNI

MAGNITE, INC.
SOFTWARE & IT · SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC. · CIK 0001595974
FORM 144 · 23☆ WATCH
INSIDER NET · 180D
-$21.7M
open-market buys minus sells, Form 4 codes P and S
INSIDER BUYERS · 180D
0
CONGRESS BUYERS · 1Y
0
FUNDS ADDED · QTR
174
13F, latest reported quarter
REVENUE GROWTH
+6.9%
XBRL, annual
NET MARGIN
20.3%
CONVERSIONS · 180D
7
codes C/M, not in net · $4.5M priced
SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST
INSIDERS
net -$21.7M over 180 days
-$21.6M over 90 days
below 82% of Software & IT
CONGRESS
no member of Congress has reported trading it
FUNDS
174 funds added or opened last quarter
more than 68% of Software & IT
REVENUE
+6.9% year over year
below 54% of Software & IT
MARGIN
20.3% net margin
more than 87% of Software & IT
BUYBACKS
$35.5M repurchased, FY to 2026-06-30
below 61% of Software & IT
SHORT
8.1% of shares outstanding short · 5.6 days to cover · settled 2026-07-31
more than 82% of Software & IT
THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET
Insiders are net sellers: -$21.7M across 11 people in 180 days.
174 funds added or opened positions in the latest 13F quarter, of 313 holders.
The year, with the filings on it
Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail
TOTAL 12M RETURN -5.6%
-5.6%12M
-56%-37%-18%+1%2025-092025-102025-122026-032026-052026-072026-09 2026-08-06 · BARRETT MICHAEL G. sold $6.7M2026-06-15 · BARRETT MICHAEL G. sold $3.0M2026-06-16 · BARRETT MICHAEL G. sold $1.8M2026-06-29 · BARRETT MICHAEL G. sold $1.5M2026-08-06 · Buckley Sean Patrick sold $1.2M2026-08-06 · Knopper Douglas S sold $848.3K2026-07-15 · BARRETT MICHAEL G. sold $785.4K2026-08-26 · Harden Sarah Patricia sold $712.1K2025-09-04 · Gephart Brian sold $683.8K2026-06-16 · Knopper Douglas S sold $675.8K2025-09-08 · Buckley Sean Patrick sold $511.2K2025-09-09 · Buckley Sean Patrick sold $492.2K2026-08-06 · Evans Katie Seitz sold $480.0K2026-08-28 · Harden Sarah Patricia sold $442.5K2026-08-06 · Buckley Sean Patrick sold $442.5K2026-07-07 · Buckley Sean Patrick sold $404.5K2025-09-02 · Soroca Adam Lee sold $392.5K2026-06-17 · Buckley Sean Patrick sold $365.4K2026-08-10 · Gephart Brian sold $308.0K2025-12-17 · Soroca Adam Lee sold $283.2K2026-02-18 · Soroca Adam Lee sold $258.3K2026-08-10 · Lam Rachel sold $241.6K2025-09-02 · Soroca Adam Lee sold $224.5K2025-09-19 · Saltz Aaron sold $208.8K2026-06-16 · Buonasera David sold $202.2K2026-08-17 · Buckley Sean Patrick sold $201.1K2026-07-01 · Buonasera David sold $187.5K2026-08-14 · Caine Paul sold $187.5K2025-09-19 · Caine Paul sold $187.5K2025-11-21 · Spillane Robert F sold $177.8K2026-06-10 · Knopper Douglas S sold $169.3K2026-06-10 · PEARSON DAVID T. sold $168.5K2025-09-15 · Saltz Aaron sold $147.9K2025-11-18 · Soroca Adam Lee sold $143.6K2026-05-19 · Spillane Robert F sold $133.3K2026-09-01 · Buonasera David sold $125.8K2026-08-10 · Caine Paul sold $121.8K2026-07-10 · Caine Paul sold $103.2K2025-10-24 · Caine Paul sold $100.0K2026-08-06 · Buonasera David sold $95.3K2025-09-10 · Caine Paul sold $89.6K2025-09-03 · Buonasera David sold $74.8K2026-09-02 · DAVID BUONASERA filed to sell $26.1K2026-09-01 · DAVID BUONASERA filed to sell $125.8K2026-08-28 · SARAH PATRICIA HARDEN filed to sell $442.5K2026-08-26 · SARAH PATRICIA HARDEN filed to sell $712.2K2026-08-18 · SEAN BUCKLEY filed to sell $66.7K2026-08-17 · SEAN BUCKLEY filed to sell $204.5K2026-08-14 · PAUL CAINE filed to sell $61.5K2026-08-10 · BRIAN GEPHART filed to sell $308.0K2026-08-10 · RACHEL LAM filed to sell $241.6K2026-08-06 · MICHAEL G BARRETT filed to sell $6.7M2026-08-06 · SEAN BUCKLEY filed to sell $1.4M2026-08-06 · DAVID BUONASERA filed to sell $179.5K2026-08-06 · KATHERYN EVANS filed to sell $480.0K2026-08-06 · Douglas S. Knopper & Abigail L. Knopper TTEES of the Knopper Joint Mgmt Trust 11/15/13 filed to sell $376.4K2026-08-06 · DOUGLAS KNOPPER filed to sell $395.4K2026-07-15 · MICHAEL G BARRETT filed to sell $785.5K2026-07-10 · PAUL CAINE filed to sell $318.3K2026-07-07 · SEAN BUCKLEY filed to sell $400.8K2026-07-07 · DAVID BUONASERA filed to sell $25.7K2026-07-07 · ADAM L SOROCA filed to sell $168.0K
INSIDER SELLFORM 144
INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY
Live price
Daily candles from TradingView, on their licence — no filings are marked on this one
WHY THIS NAME IS ON THE DESK
Insiders have filed to sell — before selling.
The record shows a net $21.7M sold by insiders over 180 days, 174 funds added last quarter, $15.2M in planned Form 144 sales. Every figure is a federal filing, dated the day it became public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector from the SEC's own SIC classification
TEAMMETACRWVCRMNETCRWDDDOGDASHAPPIOTPCTYMDB
Insider transactions
Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, MAGNITE, INC. insiders sold a net $21.7M of stock across 223 Form 4 purchases and sales, with 0 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-06.

INSIDER
FILED
SHARES
VALUE
Buonasera David
CHIEF TECHNOLOGY OFFICER
SELL
2026-09-02
1,043.0
$26.1K
Buonasera David
CHIEF TECHNOLOGY OFFICER
SELL
2026-09-01
5,371.0
$125.8K
Harden Sarah Patricia
Director
SELL
2026-08-28
18,436.0
$442.5K
Harden Sarah Patricia
Director
SELL
2026-08-26
30,550.0
$712.1K
Buckley Sean Patrick
See Remarks
SELL
2026-08-18
2,759.0
$69.0K
223 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 218 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders
13F · holdings as of the latest quarter funds have reported
BlackRock, Inc.
12,713,156.0 sh
$241.3M
VANGUARD PORTFOLIO MANAGEMENT LLC
8,197,286.0 sh
$155.6M
FMR LLC
7,759,426.0 sh
$147.3M
VANGUARD CAPITAL MANAGEMENT LLC
6,225,195.0 sh
$118.2M
WELLINGTON MANAGEMENT GROUP LLP
6,044,492.0 sh
$114.7M
SCHEDULE 13D/G
No 5%+ ownership filings
Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.
Planned sales · Form 144
Filed before the sale — intent, not a trade
DAVID BUONASERA
FILED 2026-09-02
$26.1K
DAVID BUONASERA
FILED 2026-09-01
$125.8K
SARAH PATRICIA HARDEN
FILED 2026-08-28
$442.5K
SARAH PATRICIA HARDEN
FILED 2026-08-26
$712.2K
SEAN BUCKLEY
FILED 2026-08-18
$66.7K
Fund concentration
N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show
Royce Smaller-Companies Growth Fund
$3.8M POSITION · AS OF 2026-03-31
2.1%
Fidelity Disruptive Communications ETF
$1.5M POSITION · AS OF 2026-02-28
1.5%
Fidelity Disruptive Technology ETF
$2.2M POSITION · AS OF 2026-02-28
1.2%
LKCM Small Cap Equity Fund
$3.7M POSITION · AS OF 2026-03-31
1.1%
DANA EPIPHANY SMALL CAP EQUITY FUND
$389.7K POSITION · AS OF 2026-04-30
1.1%
Nuveen Small Cap Growth Opportunities Fund
$2.9M POSITION · AS OF 2026-04-30
1.1%
SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK
Executive pay vs shareholder return · Mr. Barrett
DEF 14A pay-versus-performance disclosure · both the headline pay and the SEC's mark-to-market figure, beside the return the company delivered and the return of the peer group it chose itself
FY
CEO TOTAL
ACTUALLY PAID
OTHER NEOs AVG
TSR
PEER TSR
2025
$5.8M
$6.1M
$3.8M
-47%
-36%
2024
$5.2M
$13.0M
$2.8M
-48%
-43%
2023
$5.6M
$2.5M
$2.9M
-70%
-44%
2022
$6.1M
-$3.5M
$3.6M
-66%
-60%
2021
$18.3M
-$31.0K
$7.1M
-43%
-7%
TAGGED BY THE COMPANY UNDER SEC ITEM 402(v) · RETURN IS CUMULATIVE FROM THE START OF THE DISCLOSURE PERIOD · GREEN WHERE THE COMPANY BEAT ITS OWN PEER GROUP
Fundamentals
Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all
2025-122024-122023-122022-12
REVENUE$714.0M$668.2M$619.7M$577.1M
OPERATING INCOME$97.6M$51.1M$-155.0M$-112.8M
NET INCOME$144.6M$22.8M$-159.2M$-130.3M
EPS (DILUTED)0.950.16-1.17-0.98
OPERATING CASH FLOW$236.2M$235.2M$214.4M$192.6M
CASH$553.4M$483.2M$326.2M$326.3M
LONG-TERM DEBT$347.7M$550.1M$533.0M$722.8M
BUYBACKS$46.3M$14.6M$0$15.7M
SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-06 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE
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Public filings, honestly analyzed. Official US government sources in one desk — every figure carries the date it was filed, and the methodology is published, backtest included.

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© 2026 WAVEMAN · SOURCE: SEC EDGAR & OFFICIAL GOVERNMENT DATA · NOT INVESTMENT ADVICE · CHART BY TRADINGVIEW · UPDATED 2026-09-06 ALL SYSTEMS LIVE FOR MACHINES →