F5 NETWORKS INC

Ticker: FFIV CUSIP: 315616102 Class: EQTY

CHECK CAPITAL MANAGEMENT INC/CA's Holding History (CIK: 0001032814)

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

Q3 2014

Shares 2,550 Value ($000) $303 Avg Close $117.47 Range $108.03 - $128.30

Q2 2014

Shares 2,700 Value ($000) $301 Avg Close $107.63 Range $99.26 - $114.14

Q1 2014

Shares 2,770 Value ($000) $295 Avg Close $105.80 Range $87.47 - $116.71

Q4 2013

Shares 4,000 Value ($000) $363 Avg Close $85.18 Range $78.14 - $93.25

Q3 2013

Shares 4,570 Value ($000) $392 Avg Close $85.01 Range $68.22 - $94.66

Q2 2013

Shares 4,620 Value ($000) $318 Avg Close $76.95 Range $67.53 - $92.57

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2014	2,550	$303	$117.47	$108.03 - $128.30
Q2 2014	2,700	$301	$107.63	$99.26 - $114.14
Q1 2014	2,770	$295	$105.80	$87.47 - $116.71
Q4 2013	4,000	$363	$85.18	$78.14 - $93.25
Q3 2013	4,570	$392	$85.01	$68.22 - $94.66
Q2 2013	4,620	$318	$76.95	$67.53 - $92.57