MAGNITE INC

Ticker: MGNI CUSIP: 55955D100 Class: Common Stock

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q3 2021

Shares 9,049 Value ($000) $253 Avg Close $30.09 Range $24.01 - $36.59

Q1 2021

Shares 34,422 Value ($000) $1,432 Avg Close $43.32 Range $22.65 - $64.39

Q4 2020

Shares 55,204 Value ($000) $1,695 Avg Close $15.13 Range $6.73 - $33.00

Q3 2020

Shares 72,000 Value ($000) $500 Avg Close $6.68 Range $5.57 - $8.29

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	9,049	$253	$30.09	$24.01 - $36.59
Q1 2021	34,422	$1,432	$43.32	$22.65 - $64.39
Q4 2020	55,204	$1,695	$15.13	$6.73 - $33.00
Q3 2020	72,000	$500	$6.68	$5.57 - $8.29