WILLIAMS COS INC

Ticker: WMB CUSIP: 969457100 Class: COM

Michael & Susan Dell Foundation's Holding History (CIK: 0001599858)

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

Q4 2017

Shares 225,363 Value ($000) $6,871 Avg Close $18.59 Range $17.10 - $19.79

Q3 2017

Shares 225,363 Value ($000) $6,763 Avg Close $19.25 Range $18.15 - $20.31

Q2 2017

Shares 225,363 Value ($000) $6,824 Avg Close $18.66 Range $17.45 - $19.52

Q1 2017

Shares 225,363 Value ($000) $6,668 Avg Close $17.93 Range $17.11 - $20.21

Q4 2016

Shares 394,630 Value ($000) $12,289 Avg Close $18.55 Range $16.80 - $19.91

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	225,363	$6,871	$18.59	$17.10 - $19.79
Q3 2017	225,363	$6,763	$19.25	$18.15 - $20.31
Q2 2017	225,363	$6,824	$18.66	$17.45 - $19.52
Q1 2017	225,363	$6,668	$17.93	$17.11 - $20.21
Q4 2016	394,630	$12,289	$18.55	$16.80 - $19.91