ALTO NEUROSCIENCE INC

Ticker: ANRO CUSIP: 02157Q109 Class: Common Stock

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2025

Shares 1,413 Value ($000) $25 Avg Close $12.59 Range $4.00 - $20.91

Q3 2025

Shares 2,658 Value ($000) $11 Avg Close $3.32 Range $2.20 - $4.25

Q2 2025

Shares 825 Value ($000) $2 Avg Close $2.38 Range $1.60 - $3.08

Q1 2025

Shares 491 Value ($000) $1 Avg Close $3.58 Range $2.06 - $4.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,413	$25	$12.59	$4.00 - $20.91
Q3 2025	2,658	$11	$3.32	$2.20 - $4.25
Q2 2025	825	$2	$2.38	$1.60 - $3.08
Q1 2025	491	$1	$3.58	$2.06 - $4.88