SURFACE ONCOLOGY INC

CUSIP: 86877M209 Class: COM

EcoR1 Capital, LLC's Holding History (CIK: 0001587114)

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

Q1 2023
Shares 3,082,959 Value ($000) $2,154 Avg Close — Range —
Q4 2022
Shares 3,924,713 Value ($000) $3,218 Avg Close — Range —
Q3 2022
Shares 3,924,713 Value ($000) $4,082 Avg Close — Range —
Q2 2022
Shares 4,653,000 Value ($000) $7,631 Avg Close — Range —
Q1 2022
Shares 4,653,000 Value ($000) $13,680 Avg Close — Range —
Q4 2020
Shares 48,558 Value ($000) $449 Avg Close — Range —
Q3 2020
Shares 3,333,177 Value ($000) $22,999 Avg Close — Range —
Q2 2020
Shares 5,033,861 Value ($000) $33,022 Avg Close — Range —
Q1 2020
Shares 1,274,463 Value ($000) $2,383 Avg Close — Range —
Q4 2019
Shares 1,301,713 Value ($000) $2,447 Avg Close — Range —
Q3 2019
Shares 1,548,888 Value ($000) $2,199 Avg Close — Range —
Q2 2019
Shares 2,312,688 Value ($000) $6,522 Avg Close — Range —
Q1 2019
Shares 2,263,488 Value ($000) $10,797 Avg Close — Range —
Q4 2018
Shares 2,261,328 Value ($000) $9,588 Avg Close — Range —
Q3 2018
Shares 1,363,479 Value ($000) $14,916 Avg Close — Range —
Q2 2018
Shares 890,808 Value ($000) $14,529 Avg Close — Range —