

	Second		Second	First		First
	quarter		quarter	half		half
$ million	2020		2019	2020		2019
Results for the period
Profit (loss) for the period attributable to BP shareholders	(16,848	)	1,822	(21,213	)	4,756
Less: preference dividend	1		1	1		1
Profit (loss) attributable to BP ordinary shareholders	(16,849	)	1,821	(21,214	)	4,755

Number of shares (thousand)_(a)(b)
Basic weighted average number of shares outstanding	20,222,575		20,336,347	20,200,694		20,256,254
ADS equivalent	3,370,429		3,389,391	3,366,782		3,376,042

Weighted average number of shares outstanding used to calculate diluted earnings per share	20,222,575		20,421,184	20,200,694		20,368,125
ADS equivalent	3,370,429		3,403,530	3,366,782		3,394,687

Shares in issue at period-end	20,249,046		20,373,332	20,249,046		20,373,332
ADS equivalent	3,374,841		3,395,555	3,374,841		3,395,555


(a)	Excludes treasury shares and includes certain shares that will be issued in the future under employee share-based payment plans.

(b)

If the inclusion of potentially issuable shares would decrease loss per share, the potentially issuable shares are excluded from the weighted average number of shares outstanding used to calculate diluted earnings per share. The numbers of potentially issuable shares that have been excluded from the calculation for the second quarter 2020 and first half 2020 are 63,119 thousand (ADS equivalent 10,520 thousand) and 85,469 thousand (ADS equivalent 14,245 thousand) respectively.

Issued ordinary share capital as at 30 June 2020 comprised 20,262,823,584 ordinary shares (31 December 2019 20,372,762,750 ordinary shares). This includes shares held in trust to settle future employee share plan obligations and excludes 1,152,958,766 ordinary shares which have been bought back and are held in treasury by BP (31 December 2019 1,163,077,064 ordinary shares).