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SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•118 filings

MGNI

MAGNITE, INC.

Net sales of $16.5M over the last 3 months

11 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.

How to read this signal

Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.

JSON example

3-month balance

−$16,450,921

0 buyers · 11 sellers

12-month purchases

$0.00

0 distinct insiders

12-month sales

$26,867,192

13 distinct insiders

Highlighted alerts

12

61 Rule 10b5-1 trades treated as informational

Buying cluster · 30 days

Fewer than three distinct buyers

CEO/CFO purchases · 12 months

No executive purchases found

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Form 4 raw → Raspberry

The value is in what we do not call a signal.

The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.

100
Raw transactions
Everything returned by the filing
73
Voluntary view
P/S trades after deterministic checks
54
Administrative noise
Stored, never alerted
62
10b5-1
Shown as informational
SEC ownership XML facts
Code
A
Shares
24,641
Price
$0.00
Footnotes
2

Represents restricted stock units that vest as follows: 6,674 on November 15, 2027, 1,540 on each February 15, May 15, August 15, and November 15 thereafter until August 15, 2030 and 1,027 on November 15, 2030, subject to continued service to the Issuer through each vesting date. This equity grant may be subject to accelerated vesting in the event the Reporting Person's employment is terminated under certain circumstances. Equity grant under the Company's Amended and Restated 2014 Equity Incentive Plan.

Raspberry interpretation
Informational — no alert

Reason: administrative_code.

Verify in SEC EDGAR

Recent transactions

Voluntary purchases and sales; administrative noise stays hidden.

73 transactions

Caine Paul

Director

Sale 10b5-1
Shares
12,500
Price
$25.29
Value
$316,125
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
7,500
Price
$26.50
Value
$198,750
Open SEC filing

Knopper Douglas S

Director

Sale 10b5-1
Shares
37,337
Price
$26.28
Value
$981,216
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
1,165
Price
$24.00
Value
$27,960
Open SEC filing

Spillane Robert F

Director

SaleAlert
Shares
10,363
Price
$23.76
Value
$246,225
Open SEC filing

Evans Katie Seitz

See Remarks

Sale 10b5-1
Shares
13,997
Price
$24.00
Value
$335,928
Open SEC filing

Saltz Aaron

CHIEF LEGAL OFFICER

Sale 10b5-1
Shares
40,000
Price
$23.41
Value
$936,400
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
5,000
Price
$23.53
Value
$117,650
Open SEC filing

Evans Katie Seitz

See Remarks

Sale 10b5-1
Shares
11,100
Price
$23.46
Value
$260,406
Open SEC filing

Evans Katie Seitz

See Remarks

Sale 10b5-1
Shares
32,285
Price
$23.63
Value
$762,895
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
1,043
Price
$25.00
Value
$26,075
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
5,371
Price
$23.42
Value
$125,789
Open SEC filing

Harden Sarah Patricia

Director

Sale 10b5-1
Shares
18,436
Price
$24.00
Value
$442,464
Open SEC filing

Harden Sarah Patricia

Director

Sale 10b5-1
Shares
30,550
Price
$23.31
Value
$712,121
Open SEC filing

Buckley Sean Patrick

See Remarks

Sale 10b5-1
Shares
2,759
Price
$25.00
Value
$68,975
Open SEC filing

Buckley Sean Patrick

See Remarks

Sale 10b5-1
Shares
8,271
Price
$24.31
Value
$201,068
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
7,500
Price
$25.00
Value
$187,500
Open SEC filing

Gephart Brian

CHIEF ACCOUNTING OFFICER

SaleAlert
Shares
12,479
Price
$24.68
Value
$307,982
Open SEC filing

Lam Rachel

Director

SaleAlert
Shares
10,000
Price
$24.16
Value
$241,600
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
5,000
Price
$24.35
Value
$121,750
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
871
Price
$25.00
Value
$21,775
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
2,602
Price
$24.00
Value
$62,448
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
4,176
Price
$22.81
Value
$95,255
Open SEC filing

Buckley Sean Patrick

See Remarks

Sale 10b5-1
Shares
19,237
Price
$23.00
Value
$442,451
Open SEC filing

Buckley Sean Patrick

See Remarks

Sale 10b5-1
Shares
47,942
Price
$25.09
Value
$1,202,865
Open SEC filing

Evans Katie Seitz

See Remarks

Sale 10b5-1
Shares
20,000
Price
$24.00
Value
$480,000
Open SEC filing

Knopper Douglas S

Director

Sale 10b5-1
Shares
37,337
Price
$22.72
Value
$848,297
Open SEC filing

BARRETT MICHAEL G.

CEO

Sale 10b5-1
Shares
293,968
Price
$22.72
Value
$6,678,953
Open SEC filing

BARRETT MICHAEL G.

CEO

Sale 10b5-1
Shares
38,596
Price
$20.35
Value
$785,429
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
5,000
Price
$20.64
Value
$103,200
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
1,224
Price
$21.00
Value
$25,704
Open SEC filing

Buckley Sean Patrick

See Remarks

Sale 10b5-1
Shares
19,233
Price
$21.03
Value
$404,470
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
9,376
Price
$20.00
Value
$187,520
Open SEC filing

BARRETT MICHAEL G.

CEO

Sale 10b5-1
Shares
75,000
Price
$19.50
Value
$1,462,500
Open SEC filing

Buckley Sean Patrick

See Remarks

Sale 10b5-1
Shares
19,233
Price
$19.00
Value
$365,427
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
1,409
Price
$19.00
Value
$26,771
Open SEC filing

Knopper Douglas S

Director

Sale 10b5-1
Shares
37,337
Price
$18.10
Value
$675,800
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
11,233
Price
$18.00
Value
$202,194
Open SEC filing

BARRETT MICHAEL G.

CEO

Sale 10b5-1
Shares
100,000
Price
$17.50
Value
$1,750,000
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
1,057
Price
$17.00
Value
$17,969
Open SEC filing

BARRETT MICHAEL G.

CEO

Sale 10b5-1
Shares
178,596
Price
$16.59
Value
$2,962,908
Open SEC filing

Knopper Douglas S

Director

Sale 10b5-1
Shares
10,766
Price
$15.73
Value
$169,349
Open SEC filing

PEARSON DAVID T.

Director

Sale 10b5-1
Shares
10,766
Price
$15.65
Value
$168,488
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
1,409
Price
$15.00
Value
$21,135
Open SEC filing

Spillane Robert F

Director

SaleAlert
Shares
10,000
Price
$13.33
Value
$133,300
Open SEC filing

Soroca Adam Lee

CHIEF PRODUCT OFFICER

Sale 10b5-1
Shares
21,529
Price
$12.00
Value
$258,348
Open SEC filing

Soroca Adam Lee

CHIEF PRODUCT OFFICER

Sale 10b5-1
Shares
16,656
Price
$17.00
Value
$283,152
Open SEC filing

Buckley Sean Patrick

President, Revenue

Sale 10b5-1
Shares
2,213
Price
$14.50
Value
$32,089
Open SEC filing

Spillane Robert F

Director

SaleAlert
Shares
12,500
Price
$14.22
Value
$177,750
Open SEC filing

Buckley Sean Patrick

President, Revenue

Sale 10b5-1
Shares
4,426
Price
$13.36
Value
$59,131
Open SEC filing

Soroca Adam Lee

CHIEF PRODUCT OFFICER

Sale 10b5-1
Shares
10,857
Price
$13.23
Value
$143,638
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
5,000
Price
$20.00
Value
$100,000
Open SEC filing

Saltz Aaron

CHIEF LEGAL OFFICER

Sale 10b5-1
Shares
8,522
Price
$24.50
Value
$208,789
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
7,500
Price
$25.00
Value
$187,500
Open SEC filing

Saltz Aaron

CHIEF LEGAL OFFICER

Sale 10b5-1
Shares
6,180
Price
$23.94
Value
$147,949
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
1,189
Price
$23.91
Value
$28,429
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
3,811
Price
$23.50
Value
$89,559
Open SEC filing

Buckley Sean Patrick

President, Revenue

SaleAlert
Shares
20,000
Price
$24.61
Value
$492,200
Open SEC filing

Buckley Sean Patrick

President, Revenue

SaleAlert
Shares
20,000
Price
$25.56
Value
$511,200
Open SEC filing

Gephart Brian

CHIEF ACCOUNTING OFFICER

Sale 10b5-1
Shares
27,671
Price
$24.71
Value
$683,750
Open SEC filing

Buonasera David

CHIEF TECHNOLOGY OFFICER

Sale 10b5-1
Shares
2,950
Price
$25.37
Value
$74,842
Open SEC filing

Soroca Adam Lee

CHIEF PRODUCT OFFICER

Sale 10b5-1
Shares
15,717
Price
$24.97
Value
$392,453
Open SEC filing

Soroca Adam Lee

CHIEF PRODUCT OFFICER

Sale 10b5-1
Shares
9,269
Price
$24.22
Value
$224,495
Open SEC filing

Saltz Aaron

CHIEF LEGAL OFFICER

SaleAlert
Shares
12,403
Price
$26.07
Value
$323,346
Open SEC filing

Evans Katie Seitz

President, Operations

SaleAlert
Shares
21,509
Price
$25.52
Value
$548,910
Open SEC filing

Yu Diane

Director

SaleAlert
Shares
20,000
Price
$25.23
Value
$504,600
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
7,500
Price
$25.00
Value
$187,500
Open SEC filing

Evans Katie Seitz

President, Operations

Sale 10b5-1
Shares
8,345
Price
$26.00
Value
$216,970
Open SEC filing

Buckley Sean Patrick

President, Revenue

Sale 10b5-1
Shares
9,315
Price
$23.42
Value
$218,157
Open SEC filing

Soroca Adam Lee

CHIEF PRODUCT OFFICER

Sale 10b5-1
Shares
10,579
Price
$23.47
Value
$248,289
Open SEC filing

Saltz Aaron

CHIEF LEGAL OFFICER

SaleAlert
Shares
13,860
Price
$23.34
Value
$323,492
Open SEC filing

Lam Rachel

Director

SaleAlert
Shares
15,000
Price
$22.25
Value
$333,750
Open SEC filing

Caine Paul

Director

Sale 10b5-1
Shares
5,000
Price
$22.29
Value
$111,450
Open SEC filing

“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.