ALLEGRO MERGER CORP

CUSIP: 01749N103 Class: COM

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q4 2019
Shares 250,000 Value ($000) $2,555 Avg Close — Range —
Q3 2019
Shares 250,000 Value ($000) $2,540 Avg Close — Range —
Q2 2019
Shares 250,000 Value ($000) $2,505 Avg Close — Range —
Q1 2019
Shares 250,000 Value ($000) $2,495 Avg Close — Range —
Q4 2018
Shares 250,000 Value ($000) $2,438 Avg Close — Range —