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MAGNITE, INC.

MGNI · CIK 0001595974

SEC FORM 4
$981,216.36

MAGNITE, INC. (MGNI)

Sale of 37,337 shares at $26.28 per share.

Reporting Person Knopper Douglas S · Transaction Code S

Traded Sep 17, 2026 · Disclosed Sep 18, 2026

Source: SEC Form 4 · 0001350876-26-000005 · filed 2026-09-18 · View filing →

SEC FORM 4
$198,750.00

MAGNITE, INC. (MGNI)

Sale of 7,500 shares at $26.50 per share.

Reporting Person Caine Paul · Transaction Code S

Traded Sep 17, 2026 · Disclosed Sep 18, 2026

Source: SEC Form 4 · 0001411765-26-000009 · filed 2026-09-18 · View filing →

SEC FORM 4
$53,576.71

MAGNITE, INC. (MGNI)

Acquisition (code M) of 10,363 shares at $5.17 per share.

Reporting Person Spillane Robert F · Transaction Code M

Traded Sep 14, 2026 · Disclosed Sep 16, 2026

Source: SEC Form 4 · 0001603808-26-000005 · filed 2026-09-16 · View filing →

SEC FORM 4
$246,224.88

MAGNITE, INC. (MGNI)

Sale of 10,363 shares at $23.76 per share.

Reporting Person Spillane Robert F · Transaction Code S

Traded Sep 14, 2026 · Disclosed Sep 16, 2026

Source: SEC Form 4 · 0001603808-26-000005 · filed 2026-09-16 · View filing →

SEC FORM 4
$27,960.00

MAGNITE, INC. (MGNI)

Sale of 1,165 shares at $24 per share.

Reporting Person Buonasera David · Officer Title CHIEF TECHNOLOGY OFFICER · Transaction Code S

Traded Sep 14, 2026 · Disclosed Sep 16, 2026

Source: SEC Form 4 · 0001966857-26-000015 · filed 2026-09-16 · View filing →

SEC FORM 4
$335,928.00

MAGNITE, INC. (MGNI)

Sale of 13,997 shares at $24 per share.

Reporting Person Evans Katie Seitz · Officer Title See Remarks · Transaction Code S

Traded Sep 11, 2026 · Disclosed Sep 11, 2026

Source: SEC Form 4 · 0001700262-26-000013 · filed 2026-09-11 · View filing →

SEC FORM 4
$117,650.00

MAGNITE, INC. (MGNI)

Sale of 5,000 shares at $23.53 per share.

Reporting Person Caine Paul · Transaction Code S

Traded Sep 10, 2026 · Disclosed Sep 11, 2026

Source: SEC Form 4 · 0001411765-26-000007 · filed 2026-09-11 · View filing →

SEC FORM 4
$936,400.00

MAGNITE, INC. (MGNI)

Sale of 40,000 shares at $23.41 per share.

Reporting Person Saltz Aaron · Officer Title CHIEF LEGAL OFFICER · Transaction Code S

Traded Sep 10, 2026 · Disclosed Sep 11, 2026

Source: SEC Form 4 · 0001807986-26-000009 · filed 2026-09-11 · View filing →

SEC FORM 4
$260,406.00

MAGNITE, INC. (MGNI)

Sale of 11,100 shares at $23.46 per share.

Reporting Person Evans Katie Seitz · Officer Title See Remarks · Transaction Code S

Traded Sep 9, 2026 · Disclosed Sep 10, 2026

Source: SEC Form 4 · 0001700262-26-000011 · filed 2026-09-10 · View filing →

SEC FORM 4
$69,897.36

MAGNITE, INC. (MGNI)

Acquisition (code M) of 13,546 shares at $5.16 per share.

Reporting Person Evans Katie Seitz · Officer Title See Remarks · Transaction Code M

Traded Sep 8, 2026 · Disclosed Sep 10, 2026

Source: SEC Form 4 · 0001700262-26-000011 · filed 2026-09-10 · View filing →

SEC FORM 4
$762,894.55

MAGNITE, INC. (MGNI)

Sale of 32,285 shares at $23.63 per share.

Reporting Person Evans Katie Seitz · Officer Title See Remarks · Transaction Code S

Traded Sep 8, 2026 · Disclosed Sep 10, 2026

Source: SEC Form 4 · 0001700262-26-000011 · filed 2026-09-10 · View filing →

SEC FORM 4
$26,075.00

MAGNITE, INC. (MGNI)

Sale of 1,043 shares at $25 per share.

Reporting Person Buonasera David · Officer Title CHIEF TECHNOLOGY OFFICER · Transaction Code S

Traded Sep 2, 2026 · Disclosed Sep 3, 2026

Source: SEC Form 4 · 0001966857-26-000013 · filed 2026-09-03 · View filing →

SEC FORM 4
$125,788.82

MAGNITE, INC. (MGNI)

Sale of 5,371 shares at $23.42 per share.

Reporting Person Buonasera David · Officer Title CHIEF TECHNOLOGY OFFICER · Transaction Code S

Traded Sep 1, 2026 · Disclosed Sep 3, 2026

Source: SEC Form 4 · 0001966857-26-000013 · filed 2026-09-03 · View filing →

SEC FORM 4
$442,464.00

MAGNITE, INC. (MGNI)

Sale of 18,436 shares at $24 per share.

Reporting Person Harden Sarah Patricia · Transaction Code S

Traded Aug 28, 2026 · Disclosed Aug 28, 2026

Source: SEC Form 4 · 0001781873-26-000003 · filed 2026-08-28 · View filing →

SEC FORM 4
$712,120.50

MAGNITE, INC. (MGNI)

Sale of 30,550 shares at $23.31 per share.

Reporting Person Harden Sarah Patricia · Transaction Code S

Traded Aug 26, 2026 · Disclosed Aug 28, 2026

Source: SEC Form 4 · 0001781873-26-000003 · filed 2026-08-28 · View filing →

SEC FORM 4
$68,975.00

MAGNITE, INC. (MGNI)

Sale of 2,759 shares at $25 per share.

Reporting Person Buckley Sean Patrick · Officer Title See Remarks · Transaction Code S

Traded Aug 18, 2026 · Disclosed Aug 18, 2026

Source: SEC Form 4 · 0001865116-26-000009 · filed 2026-08-18 · View filing →

SEC FORM 4
$201,068.01

MAGNITE, INC. (MGNI)

Sale of 8,271 shares at $24.31 per share.

Reporting Person Buckley Sean Patrick · Officer Title See Remarks · Transaction Code S

Traded Aug 17, 2026 · Disclosed Aug 18, 2026

Source: SEC Form 4 · 0001865116-26-000009 · filed 2026-08-18 · View filing →

SEC FORM 4
$257,290.92

MAGNITE, INC. (MGNI)

Disposition (code F) of 10,404 shares at $24.73 per share.

Reporting Person BARRETT MICHAEL G. · Officer Title CEO · Transaction Code F

Traded Aug 15, 2026 · Disclosed Aug 18, 2026

Source: SEC Form 4 · 0001100612-26-000011 · filed 2026-08-18 · View filing →

SEC FORM 4
$350,424.10

MAGNITE, INC. (MGNI)

Disposition (code F) of 14,170 shares at $24.73 per share.

Reporting Person Day David · Officer Title CHIEF FINANCIAL OFFICER · Transaction Code F

Traded Aug 15, 2026 · Disclosed Aug 18, 2026

Source: SEC Form 4 · 0001523288-26-000010 · filed 2026-08-18 · View filing →

SEC FORM 4
$277,074.92

MAGNITE, INC. (MGNI)

Disposition (code F) of 11,204 shares at $24.73 per share.

Reporting Person Evans Katie Seitz · Officer Title See Remarks · Transaction Code F

Traded Aug 15, 2026 · Disclosed Aug 18, 2026

Source: SEC Form 4 · 0001700262-26-000009 · filed 2026-08-18 · View filing →

SEC FORM 4
$93,701.97

MAGNITE, INC. (MGNI)

Disposition (code F) of 3,789 shares at $24.73 per share.

Reporting Person Gephart Brian · Officer Title CHIEF ACCOUNTING OFFICER · Transaction Code F

Traded Aug 15, 2026 · Disclosed Aug 18, 2026

Source: SEC Form 4 · 0001778484-26-000008 · filed 2026-08-18 · View filing →

SEC FORM 4
$139,155.71

MAGNITE, INC. (MGNI)

Disposition (code F) of 5,627 shares at $24.73 per share.

Reporting Person Saltz Aaron · Officer Title CHIEF LEGAL OFFICER · Transaction Code F

Traded Aug 15, 2026 · Disclosed Aug 18, 2026

Source: SEC Form 4 · 0001807986-26-000007 · filed 2026-08-18 · View filing →

SEC FORM 4
$289,711.95

MAGNITE, INC. (MGNI)

Disposition (code F) of 11,715 shares at $24.73 per share.

Reporting Person Buckley Sean Patrick · Officer Title See Remarks · Transaction Code F

Traded Aug 15, 2026 · Disclosed Aug 18, 2026

Source: SEC Form 4 · 0001865116-26-000009 · filed 2026-08-18 · View filing →

SEC FORM 4
$200,362.46

MAGNITE, INC. (MGNI)

Disposition (code F) of 8,102 shares at $24.73 per share.

Reporting Person Buonasera David · Officer Title CHIEF TECHNOLOGY OFFICER · Transaction Code F

Traded Aug 15, 2026 · Disclosed Aug 18, 2026

Source: SEC Form 4 · 0001966857-26-000011 · filed 2026-08-18 · View filing →

SEC FORM 4
$187,500.00

MAGNITE, INC. (MGNI)

Sale of 7,500 shares at $25 per share.

Reporting Person Caine Paul · Transaction Code S

Traded Aug 14, 2026 · Disclosed Aug 18, 2026

Source: SEC Form 4 · 0001411765-26-000005 · filed 2026-08-18 · View filing →

SEC FORM 4
$121,750.00

MAGNITE, INC. (MGNI)

Sale of 5,000 shares at $24.35 per share.

Reporting Person Caine Paul · Transaction Code S

Traded Aug 10, 2026 · Disclosed Aug 12, 2026

Source: SEC Form 4 · 0001411765-26-000003 · filed 2026-08-12 · View filing →

SEC FORM 4
$241,600.00

MAGNITE, INC. (MGNI)

Sale of 10,000 shares at $24.16 per share.

Reporting Person Lam Rachel · Transaction Code S

Traded Aug 10, 2026 · Disclosed Aug 12, 2026

Source: SEC Form 4 · 0001579232-26-000004 · filed 2026-08-12 · View filing →

SEC FORM 4
$307,981.72

MAGNITE, INC. (MGNI)

Sale of 12,479 shares at $24.68 per share.

Reporting Person Gephart Brian · Officer Title CHIEF ACCOUNTING OFFICER · Transaction Code S

Traded Aug 10, 2026 · Disclosed Aug 12, 2026

Source: SEC Form 4 · 0001778484-26-000006 · filed 2026-08-12 · View filing →