MAGNITE INC

Ticker: MGNI CUSIP: 55955D100 Class: Common Stock

Winthrop Advisory Group LLC's Holding History (CIK: 0001739043)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 14,520 Value ($000) $236 Avg Close $16.60 Range $13.07 - $22.14

Q3 2025

Shares 14,080 Value ($000) $307 Avg Close $23.61 Range $20.72 - $26.65

Q2 2025

Shares 14,000 Value ($000) $338 Avg Close $14.73 Range $8.22 - $24.46

Q1 2025

Shares 13,400 Value ($000) $153 Avg Close $15.94 Range $10.86 - $21.29

Q4 2024

Shares 13,200 Value ($000) $210 Avg Close $14.67 Range $11.34 - $18.38

Q3 2024

Shares 12,900 Value ($000) $179 Avg Close $13.63 Range $10.36 - $15.92

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	14,520	$236	$16.60	$13.07 - $22.14
Q3 2025	14,080	$307	$23.61	$20.72 - $26.65
Q2 2025	14,000	$338	$14.73	$8.22 - $24.46
Q1 2025	13,400	$153	$15.94	$10.86 - $21.29
Q4 2024	13,200	$210	$14.67	$11.34 - $18.38
Q3 2024	12,900	$179	$13.63	$10.36 - $15.92