KALEIDO BIOSCIENCES INC

Ticker: KLDO CUSIP: 483347100 Class: COM

Trustees of Columbia University in the City of New York's Holding History (CIK: 0001420995)

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

Q3 2021

Shares 150,150 Value ($000) $820 Avg Close $6.20 Range $5.10 - $8.25

Q2 2021

Shares 150,150 Value ($000) $1,117 Avg Close $7.09 Range $5.71 - $9.47

Q1 2021

Shares 150,150 Value ($000) $1,216 Avg Close $10.89 Range $7.00 - $20.50

Q4 2020

Shares 150,150 Value ($000) $1,366 Avg Close $8.20 Range $5.70 - $11.50

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	150,150	$820	$6.20	$5.10 - $8.25
Q2 2021	150,150	$1,117	$7.09	$5.71 - $9.47
Q1 2021	150,150	$1,216	$10.89	$7.00 - $20.50
Q4 2020	150,150	$1,366	$8.20	$5.70 - $11.50