SCHLUMBERGER LTD

Ticker: SLB CUSIP: 806857108 Class: COM STK

Iowa State Bank's Holding History (CIK: 0001546967)

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

Q4 2019

Shares 40,765 Value ($000) $1,639 Avg Close $30.72 Range $26.24 - $35.53

Q3 2019

Shares 36,767 Value ($000) $1,256 Avg Close $30.96 Range $26.16 - $34.90

Q2 2019

Shares 28,442 Value ($000) $1,130 Avg Close $33.65 Range $28.64 - $40.63

Q1 2019

Shares 28,362 Value ($000) $1,236 Avg Close $35.74 Range $29.04 - $38.52

Q4 2018

Shares 18,222 Value ($000) $657 Avg Close $40.20 Range $28.75 - $51.73

Q3 2018

Shares 32,269 Value ($000) $1,966 Avg Close $52.03 Range $48.16 - $56.13

Q2 2018

Shares 30,246 Value ($000) $2,027 Avg Close $55.08 Range $49.65 - $60.38

Q1 2018

Shares 29,602 Value ($000) $1,918 Avg Close $55.74 Range $50.17 - $63.87

Q4 2017

Shares 29,239 Value ($000) $1,970 Avg Close $51.22 Range $48.13 - $54.87

Q3 2017

Shares 33,445 Value ($000) $2,333 Avg Close $51.87 Range $48.95 - $55.22

Q2 2017

Shares 31,455 Value ($000) $2,071 Avg Close $55.82 Range $50.94 - $62.85

Q1 2017

Shares 32,566 Value ($000) $2,543 Avg Close $63.35 Range $59.16 - $67.83

Q4 2016

Shares 30,698 Value ($000) $2,577 Avg Close $63.04 Range $59.05 - $67.18

Q3 2016

Shares 29,532 Value ($000) $2,322 Avg Close $60.67 Range $57.06 - $64.05

Q2 2016

Shares 28,601 Value ($000) $2,262 Avg Close $58.24 Range $54.33 - $62.12

Q1 2016

Shares 23,841 Value ($000) $1,758 Avg Close $53.13 Range $44.84 - $57.72

Q4 2015

Shares 23,146 Value ($000) $1,614 Avg Close $56.10 Range $49.76 - $61.62

Q3 2015

Shares 22,844 Value ($000) $1,576 Avg Close $58.92 Range $50.51 - $64.38

Q2 2015

Shares 28,764 Value ($000) $2,479 Avg Close $66.77 Range $61.74 - $70.26

Q1 2015

Shares 28,459 Value ($000) $2,375 Avg Close $61.34 Range $55.51 - $65.73

Q4 2014

Shares 28,144 Value ($000) $2,404 Avg Close $67.34 Range $57.62 - $74.84

Q3 2014

Shares 24,346 Value ($000) $2,476 Avg Close $79.49 Range $73.30 - $86.48

Q2 2014

Shares 25,371 Value ($000) $2,993 Avg Close $74.85 Range $70.12 - $86.02

Q1 2014

Shares 25,141 Value ($000) $2,451 Avg Close $65.48 Range $61.94 - $71.41

Q4 2013

Shares 25,031 Value ($000) $2,256 Avg Close $65.05 Range $61.32 - $68.30

Q3 2013

Shares 23,628 Value ($000) $2,088 Avg Close $58.98 Range $51.50 - $64.56

Q2 2013

Shares 23,848 Value ($000) $1,709 Avg Close $52.90 Range $49.31 - $55.56

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	40,765	$1,639	$30.72	$26.24 - $35.53
Q3 2019	36,767	$1,256	$30.96	$26.16 - $34.90
Q2 2019	28,442	$1,130	$33.65	$28.64 - $40.63
Q1 2019	28,362	$1,236	$35.74	$29.04 - $38.52
Q4 2018	18,222	$657	$40.20	$28.75 - $51.73
Q3 2018	32,269	$1,966	$52.03	$48.16 - $56.13
Q2 2018	30,246	$2,027	$55.08	$49.65 - $60.38
Q1 2018	29,602	$1,918	$55.74	$50.17 - $63.87
Q4 2017	29,239	$1,970	$51.22	$48.13 - $54.87
Q3 2017	33,445	$2,333	$51.87	$48.95 - $55.22
Q2 2017	31,455	$2,071	$55.82	$50.94 - $62.85
Q1 2017	32,566	$2,543	$63.35	$59.16 - $67.83
Q4 2016	30,698	$2,577	$63.04	$59.05 - $67.18
Q3 2016	29,532	$2,322	$60.67	$57.06 - $64.05
Q2 2016	28,601	$2,262	$58.24	$54.33 - $62.12
Q1 2016	23,841	$1,758	$53.13	$44.84 - $57.72
Q4 2015	23,146	$1,614	$56.10	$49.76 - $61.62
Q3 2015	22,844	$1,576	$58.92	$50.51 - $64.38
Q2 2015	28,764	$2,479	$66.77	$61.74 - $70.26
Q1 2015	28,459	$2,375	$61.34	$55.51 - $65.73
Q4 2014	28,144	$2,404	$67.34	$57.62 - $74.84
Q3 2014	24,346	$2,476	$79.49	$73.30 - $86.48
Q2 2014	25,371	$2,993	$74.85	$70.12 - $86.02
Q1 2014	25,141	$2,451	$65.48	$61.94 - $71.41
Q4 2013	25,031	$2,256	$65.05	$61.32 - $68.30
Q3 2013	23,628	$2,088	$58.98	$51.50 - $64.56
Q2 2013	23,848	$1,709	$52.90	$49.31 - $55.56