ALLEGHENY TECHNOLOGIES INC

Ticker: ATI CUSIP: 01741R102 Class: EQTY

Alyeska Investment Group, L.P.'s Holding History (CIK: 0001453072)

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

Q2 2015

Shares 199,982 Value ($000) $6,039 Avg Close $31.90 Range $27.97 - $36.35

Q3 2014

Shares 60,000 Value ($000) $2,226 Avg Close $39.92 Range $34.97 - $43.90

Q2 2014

Shares 149,614 Value ($000) $6,748 Avg Close $38.68 Range $35.44 - $42.89

Q1 2014

Shares 67,431 Value ($000) $2,541 Avg Close $31.60 Range $27.91 - $36.14

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	199,982	$6,039	$31.90	$27.97 - $36.35
Q3 2014	60,000	$2,226	$39.92	$34.97 - $43.90
Q2 2014	149,614	$6,748	$38.68	$35.44 - $42.89
Q1 2014	67,431	$2,541	$31.60	$27.91 - $36.14