SELECTA BIOSCIENCES INC

CUSIP: 816212104 Class: Common Stock

Flagship Pioneering, LLC's Holding History (CIK: 0001400240)

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

Q1 2017
Shares 826,862 Value ($000) $11,841 Avg Close — Range —
Q4 2016
Shares 826,862 Value ($000) $14,181 Avg Close — Range —
Q3 2016
Shares 1,651,862 Value ($000) $23,539 Avg Close — Range —