FUEL TECH INC

Ticker: FTEK CUSIP: 359523107 Class: COM

TWO SIGMA INVESTMENTS, LP's Holding History (CIK: 0001179392)

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

Q4 2025

Shares 126,160 Value ($000) $197 Avg Close $2.20 Range $1.41 - $3.45

Q1 2021

Shares 12,388 Value ($000) $39 Avg Close $4.40 Range $2.65 - $6.65

Q1 2015

Shares 16,481 Value ($000) $52 Avg Close $3.28 Range $3.00 - $3.86

Q4 2014

Shares 25,763 Value ($000) $99 Avg Close $3.99 Range $3.61 - $4.45

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	126,160	$197	$2.20	$1.41 - $3.45
Q1 2021	12,388	$39	$4.40	$2.65 - $6.65
Q1 2015	16,481	$52	$3.28	$3.00 - $3.86
Q4 2014	25,763	$99	$3.99	$3.61 - $4.45