EXELON CORP

Ticker: EXC CUSIP: 30161N101 Class: COM

PRIMECAP MANAGEMENT CO/CA/'s Holding History (CIK: 0000763212)

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

Q2 2015

Shares 155,300 Value ($000) $4,880 Avg Close $16.43 Range $15.37 - $17.07

Q1 2015

Shares 177,300 Value ($000) $5,959 Avg Close $16.83 Range $15.43 - $18.45

Q4 2014

Shares 177,300 Value ($000) $6,574 Avg Close $17.29 Range $15.82 - $18.78

Q3 2014

Shares 179,447 Value ($000) $6,117 Avg Close $15.64 Range $14.53 - $17.18

Q2 2014

Shares 319,447 Value ($000) $11,653 Avg Close $16.87 Range $15.55 - $17.87

Q1 2014

Shares 419,447 Value ($000) $14,077 Avg Close $13.80 Range $12.29 - $15.94

Q4 2013

Shares 629,147 Value ($000) $17,232 Avg Close $13.04 Range $12.38 - $14.06

Q3 2013

Shares 636,500 Value ($000) $18,866 Avg Close $14.03 Range $13.39 - $14.75

Q2 2013

Shares 672,800 Value ($000) $20,776 Avg Close $15.41 Range $13.58 - $17.05

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	155,300	$4,880	$16.43	$15.37 - $17.07
Q1 2015	177,300	$5,959	$16.83	$15.43 - $18.45
Q4 2014	177,300	$6,574	$17.29	$15.82 - $18.78
Q3 2014	179,447	$6,117	$15.64	$14.53 - $17.18
Q2 2014	319,447	$11,653	$16.87	$15.55 - $17.87
Q1 2014	419,447	$14,077	$13.80	$12.29 - $15.94
Q4 2013	629,147	$17,232	$13.04	$12.38 - $14.06
Q3 2013	636,500	$18,866	$14.03	$13.39 - $14.75
Q2 2013	672,800	$20,776	$15.41	$13.58 - $17.05