SPERO THERAPEUTICS INC

Ticker: SPRO CUSIP: 84833T103 Class: COM

NISA INVESTMENT ADVISORS, LLC's Holding History (CIK: 0000937615)

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

Q1 2021
Shares 200 Value ($000) $3 Avg Close $17.60 Range $12.70 - $22.23
Q4 2020
Shares 750 Value ($000) $15 Avg Close $15.59 Range $11.03 - $23.64