DIFFUSION PHARMACEUTICALS IN

CUSIP: 253748305 Class: COM PAR

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q1 2022
Shares 103 Value ($000) $0 Avg Close — Range —
Q3 2021
Shares 10,121 Value ($000) $5 Avg Close — Range —
Q1 2021
Shares 5,769 Value ($000) $5 Avg Close — Range —