SPERO THERAPEUTICS INC

Ticker: SPRO CUSIP: 84833T103 Class: COM

STRS OHIO's Holding History (CIK: 0000820478)

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

Q3 2020

Shares 7,100 Value ($000) $79 Avg Close $11.83 Range $8.50 - $14.37

Q2 2020

Shares 7,100 Value ($000) $96 Avg Close $11.23 Range $6.88 - $14.48

Q2 2018

Shares 1,700 Value ($000) $24 Avg Close $12.79 Range $10.12 - $19.00

Q1 2018

Shares 1,700 Value ($000) $24 Avg Close $12.13 Range $9.66 - $14.61

Q4 2017

Shares 1,700 Value ($000) $19 Avg Close $12.27 Range $9.85 - $15.40

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2020	7,100	$79	$11.83	$8.50 - $14.37
Q2 2020	7,100	$96	$11.23	$6.88 - $14.48
Q2 2018	1,700	$24	$12.79	$10.12 - $19.00
Q1 2018	1,700	$24	$12.13	$9.66 - $14.61
Q4 2017	1,700	$19	$12.27	$9.85 - $15.40