BERKSHIRE HATHAWAY INC DEL

Ticker: BRK/B CUSIP: 084670702 Class: Common Stock

K2 PRINCIPAL FUND, L.P.'s Holding History (CIK: 0001461790)

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

Q2 2020

Shares 2,700 Value ($000) $482 Avg Close $182.62 Range $167.04 - $203.33

Q2 2018

Shares 16,118 Value ($000) $3,008 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 26,138 Value ($000) $5,214 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 6,638 Value ($000) $1,316 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 8,138 Value ($000) $1,492 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 9,238 Value ($000) $1,565 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 3,738 Value ($000) $623 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 4,738 Value ($000) $772 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 6,138 Value ($000) $887 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 4,838 Value ($000) $700 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 9,343 Value ($000) $1,326 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 17,901 Value ($000) $2,364 Avg Close $134.20 Range $127.46 - $138.62

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2020	2,700	$482	$182.62	$167.04 - $203.33
Q2 2018	16,118	$3,008	$194.92	$184.75 - $202.77
Q1 2018	26,138	$5,214	$205.34	$189.30 - $217.62
Q4 2017	6,638	$1,316	$189.88	$180.44 - $200.50
Q3 2017	8,138	$1,492	$176.72	$168.00 - $184.00
Q2 2017	9,238	$1,565	$166.33	$160.93 - $171.95
Q1 2017	3,738	$623	$167.31	$158.61 - $177.86
Q4 2016	4,738	$772	$153.96	$141.92 - $167.25
Q3 2016	6,138	$887	$146.25	$140.95 - $151.05
Q2 2016	4,838	$700	$142.96	$136.65 - $148.03
Q1 2016	9,343	$1,326	$132.58	$123.55 - $143.40
Q4 2015	17,901	$2,364	$134.20	$127.46 - $138.62