SPERO THERAPEUTICS INC

Ticker: SPRO CUSIP: 84833T103 Class: COM

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q1 2022
Shares 12,934 Value ($000) $113 Avg Close $10.25 Range $7.51 - $16.30
Q4 2021
Shares 12,934 Value ($000) $207 Avg Close $15.88 Range $12.64 - $18.84
Q3 2021
Shares 11,934 Value ($000) $220 Avg Close $16.05 Range $12.75 - $19.87
Q2 2021
Shares 14,234 Value ($000) $199 Avg Close $13.97 Range $11.75 - $15.94
Q1 2021
Shares 10,834 Value ($000) $159 Avg Close $17.60 Range $12.70 - $22.23
Q4 2020
Shares 10,834 Value ($000) $210 Avg Close $15.59 Range $11.03 - $23.64
Q3 2020
Shares 12,734 Value ($000) $142 Avg Close $11.83 Range $8.50 - $14.37
Q2 2020
Shares 12,734 Value ($000) $172 Avg Close $11.23 Range $6.88 - $14.48